NTI TRX Series, TRX085, TRX110C, TRX120, TRX150C Installation, Start-Up, Maintenance, Parts, Warranty

Installation

Start-Up

Maintenance

Parts

Warranty

TRX

R

esidential

C

ondensing

G

as

B

oiler

Heat Exchanger Bears the ASME “H” Stamp

DANGER

THIS MANUAL MUST ONLY BE USED BY A QUALIFIED INSTALLER /

SERVICE TECHNICIAN. READ ALL INSTRUCTIONS IN THIS MANUAL

BEFORE INSTALLING. PERFORM STEPS IN THE GIVEN ORDER. FAILURE

TO DO SO COULD RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE

PERSONAL INJURY, OR DEATH.

WARNING

Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property damage, severe personal injury, or death.

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

NOTICE

The manufacturer reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature.

The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required by the Safe Drinking Water

Act, Section 1417.

2

WARNING

WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.

• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

• Installation and service must be provided by a qualified installer, service agency or the gas supplier.

Improper installation, adjustment, alteration, service, or maintenance can cause injury, property damage, or death.

Refer to this manual. Installation and service must be performed by a qualified installer, service agency, or gas supplier.

SPECIAL ATTENTION BOXES

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important product information.

DANGER

DANGER

indicates an imminently hazardous situation which, if not avoided, will result in serious personal injury or death.

WARNING

WARNING

indicates a potentially hazardous situation which, if not avoided, could result in personal injury or death.

CAUTION

CAUTION

indicates a potentially hazardous situation which, if not avoided, may result in moderate or minor personal injury.

CAUTION

CAUTION

used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE

NOTICE is used to address practices not related to personal injury.

Foreword

This manual is intended to be used in conjunction with other literature provided with the boiler. This includes all related control information.

It is important that this manual, all other documents included in this system, and additional publications including the

National Fuel Gas

Code - ANSI Z223.1

in the United States and the

Natural Gas and Propane

Installation Code - B149.1

in Canada (latest versions), be reviewed in their entirety before beginning any work.

Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code authorities, and utility companies which pertain to this type of water heating equipment.

Authority Having Jurisdiction (AHJ) – The AHJ may be a federal, state, provincial, local government, or individual such as a fire chief, fire marshal, chief of a fire prevention bureau, labor department or health department, building official or electrical inspector, or others having statutory authority. In some circumstances, the property owner or his/her agent assumes the role, and at government installations, the commanding officer or departmental official may be the AHJ.

NOTE: The manufacturer reserves the right to modify product technical specifications and components without prior notice.

For the Installer

This boiler must be installed by qualified and licensed personnel. The installer should be guided by the instructions furnished with the boiler, and by local codes and utility company requirements. In the absence of local codes, preference should be given to the

National Fuel Gas

Code - ANSI Z223.1

in the United States and the


Installation Code - B149.1

in Canada (latest versions).

Installations Must Comply With:

Local, state, provincial, and national codes, laws, regulations, and ordinances.

In the United States - The latest version of the

National Fuel Gas Code,

ANSI Z223.1

, from American Gas Association Laboratories, 8501 East

Pleasant Valley Road, Cleveland, OH 44131.

The latest version of the

National Electrical Code, NFPA No. 70

.

In Canada - The latest versions of the


Installation Code, CSA B149.1

, and the

Canadian Electrical Code, C22.1

, from CSA Group, 178 Rexdale Blvd, Toronto, Ontario, Canada M9W 1R3.

NOTE: The gas manifold and controls met safe lighting and other performance criteria when undergoing tests specified in

ANSI Z21.13

- latest edition.

3

4

WARNING

The hydronic supply and return connections of these products

are for installation in closed loop systems ONLY! Use of this product in any manner other than described in this manual may result in premature product failure, substantial property damage, severe personal injury, or death. Damage or failure of this product

(or the system in which it is installed) due to unauthorized use IS

NOT COVERED BY WARRANTY.

NOTICE

IMPORTANT

In accordance with Section 325 (f) (3) of the Energy Policy and

Conservation Act, NTI has provided this boiler with multiple features designed to save energy by reducing the boiler water temperature as heating load decreases.

These features include:

• A modulating combustion system that adjusts firing rate based on heat demand.

• Adjustment of boiler set point based on inferred heat load as determined by an outdoor sensor. The outdoor sensor is supplied with this boiler.

• This boiler does not include a standing pilot.

• This boiler is designed and shipped to assure the highest efficiency operation possible. Such high efficiency is achieved by limiting heating circuit water temperature to 140°F when there is no anticipated heat load, based upon the outdoor sensor and the Outdoor Reset Curve

(sensor response curve) in the boiler software.

• This feature may be over-ridden as described below in specific installations:

• The boiler control is equipped with an outdoor sensor override for use with building management systems or in cascaded systems (for systems with total input of

300,000 BTU/hr or greater).

See statement below for an important notice on the use of the override.

IMPORTANT

In accordance with Section 325 (f) (3) of the Energy Policy and Conservation Act, this boiler is equipped with a feature that saves energy by reducing the boiler water temperature as the heating load decreases. This feature is equipped with an override which is provided primarily to permit the use of an external energy management system that serves the same function. THIS OVERRIDE MUST NOT BE USED UNLESS AT

LEAST ONE OF THE FOLLOWING CONDITIONS IS TRUE:

• An external energy management system is installed that reduces the boiler water temperature as the heating load decreases.

• This boiler is not used for space heating.

• This boiler is part of a modular or multiple boiler system having a total input of 300,000 BTU/hr or greater.

NOTICE

ASME CSD-1, Section CW-400 requires the temperature controls of hot water heating boilers to a) be accepted by a nationally recognized testing agency to conform to UL 353, b) shutoff the fuel supply when the system water reaches a preset operating temperature, c) have a high temperature limit control that prevents the water temperature from exceeding the maximum allowable temperature by causing safety shutdown and lockout.

The temperature controls of this boiler have been accepted by a nationally recognized testing agency to conform to UL 353; they work to shutoff the fuel supply when the system water temperature reaches the preset operating temperature; and they cause a safety shutdown and lockout, requiring a manual reset to start, when the water temperature reaches 212°F.

Table of Contents

Part 1 - General Safety Information

A. Operation and Installation Warnings

B. Improper Combustion

C. Gas

D. When Servicing the Boiler

E. Boiler System

F. CH and DHW Loop Water Chemistry Requirements

G. Freeze Protection

H. Water Temperature Adjustment and Scalding

I. High Elevation Installations

Part 2 - Before You Start

A. What’s in the Box

B. Optional Equipment

Part 3 - Prepare the Boiler for Installation

A. Locating the Boiler

B. Leveling

C. Clearances for Service Access

D. Wall Mounting Considerations

E. Wall Mounting Instructions

1. Mounting to a Wood Studded Wall

2. Mounting to a Metal Frame

F. Residential Garage and Closet Installations

15

16

G. Exhaust Vent and Intake Pipe

1. Direct Vent of Exhaust and Intake

16

16

2. Power Venting, Indoor Combustion Air in Confined or Unconfined

17

H. Carbon Monoxide Detectors

I. Prevent Combustion Air Contamination

17

17

J. Removing a Boiler from a Common Vent System

K. Technical Specifications

Part 4 - Water Piping

A. General Plumbing Information

B. Backflow Preventer

C. Expansion Tank

D. Piping the Boiler

E. Internal Circulation Pump

F. By-Pass Valve

G. CH and DHW Pressure Relief Valves

24

24

26

26

27

18

19

24

24

24

H. Air Elimination Device

I. Applications*

H. Floor Drying Function

Part 5 - Venting

A. General

B. Approved Materials for Exhaust Vent and Intake Pipe

C. Additional Requirements for Installation in Canada

D. Exhaust Vent and Intake Pipe Location

E. Exhaust Vent and Intake Pipe Sizing

F. Tightening Boiler Collar to Exhaust Vent and Intake Pipe

G. Exhaust Vent and Intake Pipe Installation

H. Applications

1. Direct Vent Installation of Exhaust and Intake

2. Venting Through an Existing System

3. Power Venting, Indoor Combustion Air in Confined or Unconfined

37

37

38

39

39

40

42

42

48

28

28

35

36

36

12

13

13

14

14

9

10

8

9

10

14

15

15

7

7

7

7

8

6

6

Part 6 - Installing the Condensate Drain

Part 7 - Connecting Electrical Service

A. Wiring

1. Removing the Power Cord (To Hard Wire the Boiler)

2. Connecting Power (120V) for DHW and CH Circulators

3. Low Voltage Wiring Connections

4. Room Thermostat Wiring Connections

5. Outdoor Sensor Connections

6. Aquastat (Default) and Tank Sensor (Optional) Connections (Boiler

50

51

51

52

53

53

54

54

B. Internal Wiring Details 55

Part 8 - Gas Connections

A. Gas Pipe Sizing Tables

1. Gas Pipe Sizing

2. Natural Gas Pipe Sizing

3. LP (Liquid Propane) Gas Pipe Sizing

B. Gas Connection Requirements

C. Additional Precaution for Excess Flow Valve (EFV)

D. Checking Gas Pressure at the Boiler for Proper Operation 60

Part 9 - Controls 61

A. Control and Display Overview

B. Ignition Procedure

C. Central Heating (CH) Temperature Adjustment

61

62

62

D. Domestic Hot Water (DHW) Temperature Adjustment

E. User Menu

F. INFO Menu

G. Date and Time

H. Automatic CH Temperature Control (AUTO)

I. Outdoor Heating Curve Slope

J. Outdoor Heating Curve Parallel Shift

K. Room temperature Day /Night

(Only applicable when using NTI room sensor)

L. Time programs – heating schedule

62

63

64

64

65

66

66

66

59

59

59

59

59

59

60

(Only applicable when using NTI room sensor)

66

M. Automatic summer / winter changeover

N. Technical Menu

67

(Complete Programming & Troubleshooting Menus)

68

O. Boiler Control Menu Structure 69

P. Complete Menu Parameters

Part 10 - Start-Up Preparation

A. Check / Control Water Chemistry

B. Check for Gas Leaks

C. Freeze Protection (When Used)

70

78

78

78

78

D. System Water Fill, Purge, and Test

E. Purge Air from DHW System

F. Check Thermostat Circuit(s)

G. Condensate Removal

Part 11 - Start-Up

A. First Ignition

B. Combustion Checking Procedure

C. Checking Combustion Parameters

D. Converting the Appliance from Natural Gas to Propane

Operation

Part 12 - Installation Checklist

Part 13 - Troubleshooting

A. Boiler Protection Devices

1. Blocking Error

2. Lockout Error

3. Malfunction Warning

B. Boiler Error Codes

Part 14 - Maintenance

79

79

79

79

81

81

82

84

84

85

87

87

87

87

87

88

92

92

92

A. Procedures

B. Maintenance That May be Performed by the User

C. Maintenance Only to be Performed by a Qualified Service

Technician

D. Replacing Components

E. After Maintenance is Complete

Part 15 - Maintenance Report

Part 16 - Shutdown

A. Shutdown Procedure

B. Vacation Procedure

C. Failure to Operate

D. Important Notice

Part 17 - Replacement Parts

Maintenance Notes

93

97

100

100

102

102

102

102

102

103

114

5

6


This boiler is approved for indoor installations only and is not intended for use as a pool heater. Clearance to combustible materials: 0” top, bottom, sides, and back. Boiler must have room for service: 18” front,

14” top, 12” bottom, 2” left and right sides and 0” back are minimum recommended service clearances. (A combustible door or removable panel is acceptable front clearance. A 3” minimum clearance must be provided from the boiler front cover to the removable panel or combustible door.) This boiler has been approved for closet installation and installation on combustible flooring. Do not install directly on carpeting. Install the boiler in a location where relief valve discharge or a leak will not result in damage to the surrounding area. If such a location is not available install an auxiliary catch pan.

This appliance is rated Category IV (pressurized vent, likely to form condensate in the vent) and requires a special vent system designed for pressurized venting. Use only Category IV vent systems.

WARNING

Installer -

Read all instructions in this manual before installing.

Perform steps in the given order.

User -

This manual is for use only by a qualified service technician.

Have this boiler serviced / inspected annually by a qualified service technician.

FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE

CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE


NOTE:

Obey all local codes. Obtain all applicable permits before installing the boiler.

NOTE:

Install all system components and piping in such a manner that does not reduce the performance of any fire rated assembly.

A. Operation and Installation Warnings

To avoid serious injury or death, read, understand, and follow all of the precautions listed here.

DANGER

Vapors from flammable liquids will explode and cause a fire, resulting in personal injury or death. The boiler has a burner that can come on at any time and ignite vapors. DO NOT use or store flammable liquids around the boiler.

Improper venting can cause a build-up of carbon monoxide.

Breathing carbon monoxide can result in brain damage or death.

DO NOT operate the boiler unless it is properly vented to the outside and has an adequate fresh air supply for safe operation.

Inspect the exterior exhaust gas outlet port and fresh air inlet port on a regular basis to ensure they are functioning properly.

A concentration of carbon monoxide as small as .04% (400 parts per million) in the air can be fatal. When making high fire or low fire adjustments, CO levels must be monitored using a calibrated combustion analyzer such that a CO level of no more than 150 ppm is exceeded at any time during operation.

Adjusting the “low fire offset” or the “main flow restrictor” in small increments can result in a significant increase in CO concentration.

To avoid serious injury or death, DO NOT make any adjustments to the gas valve without monitoring the exhaust gases with a fully functional and calibrated combustion analyzer.

Failure to follow these instructions will result in property damage, severe personal injury, or death.

WARNING

This boiler must be installed by a qualified service technician.

Improper installation and/or operation can cause a potentially hazardous situation, which if not avoided will void the warranty and could result in serious injury or death.

The manufacturer cannot anticipate every circumstance that might involve a potential hazard. Each installation has its own specialized characteristics, requirements, and possible hazards. Therefore, all possible incidents are not included in these warnings. Proper and safe installation, operation, and service are the responsibility of the qualified service technician.

Proper care of the boiler is the user’s responsibility. Ensure the user carefully reads and understands the User’s Information

Manual before operating the boiler.

Make sure the user knows the location of the gas shut-off valve and how to operate it. Immediately close the gas shut-off valve if the appliance is subjected to fire, overheating, flood, physical damage, or any other damaging condition that might affect the operation of the unit. Have the appliance checked by a qualified service technician before resuming operation.

Do not power up the unit unless the gas and water supply valves are fully opened. Make sure the fresh air intake port and exhaust gas port are open and functional.

No one but a qualified service technician should attempt to install, service, or repair this boiler. There are no serviceable parts which can be changed by the user / owner.

User / Owner: Contact the original qualified service technician if the boiler needs repair / maintenance. If the original technician is unavailable, ask your gas supplier for a list of qualified service providers.

DO NOT store or place newspapers, laundry, or other combustible items near the appliance or the exterior exhaust gas outlet and/or fresh air inlet port.

The owner should inspect the system monthly for damage, water stains, signs of rust, corrosion, and exhaust vent and air intake blockage. If inspection of the unit shows signs of damage, the boiler should be shut off until the problem is repaired by a qualified technician.

After installation, all appliance safety devices should be tested.

The boiler is certified for indoor installations only. The boiler consists of gas ignition system components which must be protected from water (dripping, spraying, etc.) during operation and service. Carefully consider installation location and the placement of critical components (circulators, condensate neutralizers, etc.) before installing the boiler.

DO NOT allow children to operate this boiler. DO NOT use this boiler if it does not appear to be operating correctly. A qualified service technician should service and inspect the boiler annually.

NOTE:

If the boiler is exposed to fire or water (or is any way damaged), do not operate. Immediately call a qualified service technician. Failure to follow this information could result in property damage, severe personal injury, or death.

WARNING

DO NOT USE THIS BOILER IF ANY PART HAS BEEN

SUBMERGED IN WATER.

Immediately call a qualified service technician. The boiler MUST BE replaced if it has been submerged.

Attempting to operate a boiler that has been submerged could create numerous harmful conditions, such as a potential gas leakage causing a fire and/or explosion, or the release of mold, bacteria, or other harmful particulates into the air. Operating a previously submerged boiler could result in property damage, severe personal injury, or death.

NOTE:

Boiler damage due to flood or submersion is considered an

Act of God, and IS NOT covered under product warranty.

WARNING

DO NOT alter or modify the appliance or appliance controls.

Altering any NTI boiler with parts not manufactured by NTI WILL

INSTANTLY VOID the boiler warranty and could result in property damage, personal injury, or death.

CAUTION

Due to the low water content of the boiler, improper sizing of the boiler with regard to heating system load will result in excessive cycling and accelerated component failure.

DO NOT

under or oversize the boiler to the system. Modular boiler installations greatly reduce the likelihood of boiler oversizing. NTI

DOES NOT

warrant failures caused by improperly sized boiler applications.

High heat sources (sources generating heat 100 o

F / 37 o

C or greater, such as stove pipes, space heaters, etc.) may damage plastic components of the boiler as well as plastic vent pipe materials. Such damages ARE NOT covered by warranty. It is recommended to keep a minimum clearance of 8” from high heat sources. Observe heat source manufacturer instructions, as well as local, state, provincial, and national codes, laws, regulations and ordinances when installing this boiler and related components near high heat sources.

Do not use this boiler for anything other than its intended purpose

(as described in this manual). Doing so could result in property damage and WILL VOID product warranty.

NOTICE

This appliance is equipped with a three prong plug. It should only be plugged directly into a properly grounded three prong receptacle.

DO NOT remove the ground plug from the plug.

This appliance provides an overheat shutdown limit. In the event the appliance water temperature exceeds the setpoint of the control limit, the cutoff will trip and the appliance will shut down. Certain local codes require additional temperature limits. In addition, certain types of systems may operate at temperatures below the minimum setpoint of the limit provided with the appliance. Contact the manufacturer for additional overheat controls.


B. Improper Combustion

WARNING

Do not obstruct the flow of combustion and ventilating air.

Adequate air is necessary for safe operation. Failure to keep the exhaust vent and combustion air intake clear of ice, snow, or other debris could result in property damage, serious personal injury, or death.

C. Gas

Should overheating or gas supply fail to shut off, turn off the manual gas control valve to the boiler.

D. When Servicing the Boiler

WARNING

Be sure to disconnect electrical power before opening boiler cabinet or performing service. Label all wires while performing service to ensure proper re-wiring of the appliance. Wiring errors can cause improper or dangerous operation. Failure to do so could result in electrical shock, improper boiler or system operation, property damage, serious personal injury, or death.

• To avoid electric shock, disconnect electrical supply before performing maintenance.

• To avoid severe burns, allow boiler and associated equipment to cool before servicing.

• Do not use petroleum-based cleaning or sealing compounds in boiler system. Gaskets and seals in the system may be damaged, possibly resulting in substantial property damage.

• Do not use “homemade cures” or “boiler patent medicines”.

Substantial property damage, damage to boiler, and/or serious personal injury may result.

• Always verify proper operation after servicing the boiler.

NOTE: When inquiring about service or troubleshooting, reference the model and serial numbers from the boiler rating label.

E. Boiler System

• Thoroughly flush the system (without the boiler connected) to remove sediment. The high-efficiency heat exchanger can be damaged by build-up or corrosion due to sediment. The manufacturer recommends a suction strainer in this type of system.

• Do not use petroleum-based cleaning or sealing compounds in boiler system. Gaskets and seals in the system may be damaged, possibly resulting in substantial property damage.

• Do not use “homemade cures” or “boiler patent medicines”.

Substantial property damage, damage to boiler, and/or serious personal injury may result.

• Continual fresh make-up water will reduce boiler life. Mineral buildup in the heat exchanger reduces heat transfer, overheats the stainless steel heat exchanger, and causes failure. Addition of oxygen from make-up water can cause internal corrosion in system components. Leaks in the boiler or piping must be repaired at once.

NOTE: DO NOT add cold make up water to the system when the boiler is hot. Thermal shock can potentially cause cracks in the heat exchanger. Such damage IS NOT covered by warranty.

7


F. CH and DHW Loop Water Chemistry Requirements

CAUTION

Chemical imbalance of the water supply may affect efficiency and cause severe damage to the boiler and associated equipment.

Water quality must be professionally analyzed to determine whether it is necessary to treat the water. Various solutions are available to adjust water quality. Adverse water quality will affect the reliability of the system. In addition, operating temperatures above 135 o

F will accelerate the build-up of lime scale and possibly shorten boiler service life. Failure of a boiler due to lime scale build-up, low pH, or other chemical imbalance IS NOT covered by the warranty.

The water must be potable, free of corrosive chemicals, sand, dirt, and other contaminates. It is up to the installer to ensure the water does not contain corrosive chemicals or elements that can damage the heat exchanger. Potable water is defined as drinkable water supplied from utility or well water in compliance with EPA secondary maximum contaminant levels (40 CFR Part 143.3). If the water contains contaminants higher than outlined by the EPA, water treatment is recommended and additional, more frequent maintenance may be required. See Table 1.

If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized technician or licensed professional.

CH Loop Total Water Hardness Specifications

Contaminant Maximum Allowable Level

Total Hardness

120 mg/l

(7 grains/gallon)

DHW Loop Total Water Hardness Specifications


Total Hardness

(Below 140 o

F water temperature)

200 mg/l

(12 grains/gallon)

Total Hardness

(Above 140 o

F water temperature)

120 mg/l

(7 grains/gallon)

CH and DHW Loop Water Quality Specifications


Aluminum

Chloride

Copper

Iron

0.05 to 0.2 mg/l or PPM

100 mg/l or PPM

1 mg/l or PPM

0.3 mg/l or PPM

Manganese 0.05 mg/l or PPM pH

Sulfate

Total Dissolved Solids (TDS)

Zinc

Dissolved Carbon Dioxide (CO2)

6.5 - 8.5

205 mg/l or PPM

500 mg/l or PPM

5 mg/l or PPM

15 mg/l or PPM

Table 1 - Water Quality Specifications

8

G. Freeze Protection

CAUTION

Consider piping and installation when determining boiler location.

Damages resulting from incorrect installation or from use of products not approved by the manufacturer ARE NOT covered by warranty. Failure of the boiler due to freeze related damage IS NOT covered by product warranty.

WARNING

NEVER use any toxic chemical, including automotive, standard glycol antifreeze, or ethylene glycol made for hydronic (nonpotable) systems. These chemicals can attack gaskets and seals in water systems, are poisonous if consumed, and can cause personal injury or death.

NOTE: Loops Serving Indirect Water Heaters (IWHs)

Glycol used in IWH loops should be food grade propylene glycol,

FDA rated as “generally recognized as safe” (GRAS). If using a glycol / potable water mix, the water chemistry must meet the requirements in this manual. The glycol content of the liquid must not exceed 50%, unless the manufacturer specifies a different ratio. Glycol should be checked periodically to prevent it from becoming acidic. Please refer to guidelines provided by the glycol manufacturer regarding glycol maintenance.

NOTE: Glycol not recognized as GRAS may only be used in closed loop

CH applications.

NOTE: NTI DOES NOT WARRANT THE BOILER AGAINST FREEZE-RELATED

DAMAGE.

The boiler control is equipped with freeze protection that activates based on internal water temperature. See the following table for details on freeze protection operation.

NOTE: Freeze protection will not be active if the boiler loses power.

Condition

Events

Time

Condition

Events

FREEZE PROTECTION OPERATION

STAGE 1

The water temperature detected by probes NTC1 or

NTC2 ranges between 39 o

F (4 o

C) and 46 o

F (8 o

C).

• The internal pump operates at high speed.

• The 3-Way Valve alternately switches positions - 1 minute on heating mode to 1 minute on DHW mode

• The display shows the icon.

Until the NTC1 and NTC2 temperature is greater than or equal to

46°F (8°C)

If after 20 minutes the conditions described in Stage 1 are still present, the boiler proceeds to Stage 2.

STAGE 2

The water temperature detected by probes NTC1 or

NTC2 is less than 39 o

F (4 o

C).

• The burner turns on at minimum power.

• The 3-Way Valve is positioned on DHW and switches every 30 seconds between CH and DHW.

• When the temperature is greater than or equal to

104 o

F (40 o

C) the burner will turn off. The boiler will maintain the temperature between 95 and 104 o

F (40 o

C) for 45 minutes.

o

F (35 o

C)

• After 45 minutes there will be 2 minutes of post heating circulation.

• If the temperature falls below 46 o

F (8 o

C) within

150 minutes the burner will immediately power on again.

Time

• The display shows the icon.

Until the NTC1 temperature is greater than or equal to

104 o

F (40 o

C)

Table 2 - Freeze Protection Detail

CAUTION

On TRX085 / TRX120 Models ONLY

If the boiler to be used only in Heating Mode (not connected to an indirect water heater), the electrical connection of the 3-way valve motor MUST BE DISCONNECTED while the boiler is operating in central heating mode. This will lock the valve motor in central heating mode and ensure freeze protection operates properly. Failure to disconnect the valve may disable boiler freeze protection and result in property damage.

H. Water Temperature Adjustment and Scalding

This boiler can deliver scalding water. Be careful whenever using hot water to avoid scalding injury.

Certain appliances such as dishwashers and automatic clothes washers may require increased water temperatures. By setting the thermostat on this boiler to obtain the increased water temperature required by these appliances you may create the potential for scald injury.

To protect against injury, install a mixing valve in the water system. This valve will reduce point of use discharge temperatures by mixing cold and hot water in branch supply lines.

Such valves are available from your local plumbing supplier.

Table 3 details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications.

Approximate Time / Temperature Relationships in Scalds

120 o F

125 o F

130 o F

135 o F

140 o F

145 o F

150 o F

More than 5 minutes

1 1/2 to 2 minutes

About 30 seconds

About 10 seconds

Less than 5 seconds

Less than 3 seconds

About 1 1/2 seconds

155 o F About 1 second

Table 3 - Time and Temperature Relationship in Scalds


I. High Elevation Installations

WARNING

Natural gas at high elevation might contain less heating value than typical 1,000 BTU/cu ft and therefore can cause improper air / gas mix leading to improper combustion. For natural gas installations above 3,000 ft, call your gas provider to determine the heating value of the supplied natural gas.

9


NOTICE

UNCRATING THE BOILER

- Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.

Remove the boiler from the packaging. Remove the accessory box from the boiler. Take care to place the boiler in a safe location prior to installation to prevent damage to the mechanical connections.

A. What’s in the Box

All models

5

5

6

2

1

13

3

14

TRX085

14a

14b

14f

12

THIS CONTROL WAS CONVERTED FOR USE WITH PROPANE GAS

This appliance has been converted for use with Propane Gas, in accordance with the instructions provided with the Natural to Propane Conversion Kit by ______________________________________ , which accepts responsibility that the conversion was performed properly.

Reference rating plate for Propane Input and Gas Pressure

420060882600

4

Connectivity

Quick Start Guide

TRX series

User’s

Information

Manual

TRX

R esidential C ondensing G as B oiler

Installation

Start-Up

Maintenance

NOTICE without notice and will not be held liable for typographical errors in literature.

Parts

The manufacturer reserves the right to make product changes or updates

Warranty

The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required by the Safe Drinking

Water Act, Section 1417.

NOTE TO CONSUMER:

PLEASE KEEP ALL INSTRUCTIONS

FOR FUTURE REFERENCE.

R esidential


C ondensing G as B oiler

TRX

NATURAL TO PROPANE

CONVERSION INSTRUCTIONS

For Qualified Technician

Installation Instructions

WARNING

IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY,

A FIRE OR EXPLOSION MAY RESULT, CAUSING PROPERTY DAMAGE,

PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE GASOLINE OR

OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR

ANY OTHER BOILER.


• Do not try to light any boiler.

• Do not touch any electrical switch.

DANGER

• Immediately call your gas supplier from a neighbor’s phone. Follow the

THIS MANUAL MUST ONLY BE USED BY A QUALIFIED INSTALLER /

SERVICE TECHNICIAN. READ ALL INSTRUCTIONS IN THIS MANUAL

BEFORE INSTALLING. PERFORM STEPS IN THE GIVEN ORDER. FAILURE service agency, or the gas supplier.


Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property damage, severe personal injury, or death.

WARNING

Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property damage, severe known to the State of California to cause cancer, birth defects, or other reproductive harm.

personal injury, or death.

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

NOTICE

The manufacturer reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature.

The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required by the Safe Drinking Water

Act, Section 1417.

11

WARNING

This conversion kit shall be installed by a qualified service agency in accordance with the manufacturer’s instructions and all applicable codes and requirements of the authority having jurisdiction. If the information in these instructions is not followed exactly, a fire, an explosion or production of carbon monoxide may result causing property damage, personal injury or loss of life. The qualified service agency is responsible for the proper installation of this kit. THE INSTALLATION IS NOT

PROPER AND COMPLETE UNTIL THE OPERATION OF THE

CONVERTED APPLIANCE IS CHECKED AS SPECIFIED IN

THE MANUFACTURER’S INSTRUCTIONS SUPPLIED WITH

THE KIT, WHICH NECESSITATES THE USE OF A CALIBRATED

CO2/O2 AND CO COMBUSTION ANALYZER.

15

TRX110C

15b

14c

15c

Gas

15e

15a

14g

14d

14e

14h

ACCESSORIES BOX

BOITE ACCESSOIRES



Pour technicien qualifié instructions d’installation

Read the code

Lire le code

code

Gas

8

15g

7

15d

ACCESSORIES BOX


9

0

0

20

20

40 psi

60

80

50

100

250

150

200

10




Read the code

Lire le code

code

15f

Components included with the boiler:

7

8

5

6

9

3

4

1

2

10

Nr.

11

Quantity

1

1

1

1

1

1

1

1

1

1+1

1

1

1

2 + 2

1

2

1

1

1

1

Description

ALL MODELS

Condensing Gas Boiler

Condensate Drain Pipe

Bracket

Assembly Screws (Fischer Type SX )

CH Pressure Relief Valve + Connection Tube

2” CPVC Pipe, 5.5” Long

Piping Bracket

Torx screw adapter

2” Vent Screen + 3” Vent Screen

Tridicator

Installation Manual (This Document)

User’s Information Manual

Connectivity Quick Start Guide

LP Convertion Instructions

Warranty

Installation Quick Start Guide

Template

LP Gas Conversion Kit

Outdoor sensor Kit

Piping Adapter Kit

- TRX085

12

13

14

15

15-a

15-b

15-c

15-d

15-e

15-f

15-g

14-a

14-b

14-c

14-d

14-e

14-f

14-g

14-h

2

1

1

1

4

1

1

6

1

1

1

1

4

1

2

6

16 1

Cap 1/2”

Gasket (2x1/2” + 2x3/4” + 1 x 1” + 1 gas fiber)

Clamp (2x3/4” + 2x1”)

Gas Adapter 3/4”

CH supply pipe 1”

CH return pipe 1”

Tank return pipe 3/4”

Accessory box components list

Piping Adapter Kit - TRX110C


Clamp (2x3/4” + 2x1”)

Gas Adapter 3/4”

CH supply pipe 1”

CH return pipe 1”

DHW outlet & inlet pipes 3/4”


Piping Adapter Kit - TRX1120/ TRX150C

(see fig. 1 part b - next page)

16-a

16-b

16-c

16-d

16-e

16-f

16-g

16-h

7

4

1

1

1

1

1

1


Clamp (2x3/4” + 2x1”)

Gas Adapter 3/4”

CH supply pipe 1”

CH return pipe 1”

DHW outlet pipe (150C)/Tank return pipe (120) 3/4”

DHW inlet flow restrictor (150C)1/2” x 3/4”

DHW inlet pipe 3/4”

16-i

16-j

2

2

Table 4 - Included with the Boiler

Cap 1/2”


Figure 1 - Included with the Boiler - part a

10

TRX150C / TRX120

14a

16d

16b

16i

16c

16g

16f

16h

16e

16j

ACCESSORIES BOX





Read the code

Lire le code

code

Figure 2 - Included with the Boiler - part b

or

0

50

0

20

20

100

40 psi

150

60

80

200

250

Ø 1-1/8”

View from the Front

Ø 7/8”

16” (406 mm)

Ø 7/8” Ø 1-1/8”

2-3/16” (55 mm)

6-3/8” (162 mm)

6-11/16” (169 mm)

View from the Side

Figure 3 - Adapter Kit Dimensions and

Specifications - Included with Adapter Kit


How the Boiler Operates

TRX condensing technology intelligently delivers hydronic heating while maximizing efficiency. Outlined below are system features and operation:

Stainless Steel Heat Exchanger

The highly efficient stainless steel heat exchanger is designed to extract all available heat from the supply line before it is exhausted.

Modulating Combustion System

The combustion system modulates the output of the burner during operation to match system demand and achieve the control set point while in operation. The set point can change by internal or external signals to enhance the overall performance of the system.

Control

The integrated control system monitors the system and regulates fan speed to control boiler output. This allows the boiler to deliver only the amount of heat energy required and nothing more.

The control can be set to monitor outdoor temperature through an outdoor sensor to regulate boiler set point. The system can be further enhanced by installing an indirect water heater to provide domestic hot water.

The control can regulate the output of multiple boilers through its cascade system function. The cascade system is capable of connecting up to eight boilers together in such a way that they function as one boiler system. This allows for greater turn down ratios and provides systematic control of the multiple boilers in an installation to minimize downtime and maximize efficiency.

The cascade system works by establishing one boiler as the master and the other connected boilers as followers. The master boiler requires a sensor to provide feedback on set point temperature in order to adjust heating input from the connected boilers. Each cascaded boiler will have its own pump to provide maximum flow and control heat exchanger flow rate.

Text Display and Operational Display Icons

The display allows the user to change system parameters and monitor system outputs.

Gas Valve

Senses suction from the blower, allowing gas to flow only if powered and combustion air is flowing.

Integrated Venturi

Controls air and gas flow into the burner.

Burner

The high grade stainless steel burner uses premixed air and gas to provide a wide range of firing rates.

Spark Ignition

The burner is ignited by applying high voltage through the system spark electrode. The spark from the electrode ignites mixed gas off of the burner.

Supply Water Temperature Sensor

This sensor monitors the boiler outlet water temperature (System

Supply). The control adjusts boiler firing rate so the supply temperature will match the boiler set point.

Return Water Temperature Sensor

This sensor monitors boiler return water temperature (System Return).

Flue Sensor

Monitors flue temperature and adjusts firing rate.

Temperature and Pressure Gauge

Allows the user to monitor system temperature and pressure.

Electrical field connections with terminal strips

The electrical cover allows easy access to the clearly marked line voltage and low voltage terminal strips to facilitate wiring the boiler.

11


Condensate Collection System

This boiler is a high efficiency appliance and will produce condensate.

The condensate collection system has a float switch which monitors condensate level and prevents condensate from backing up into the combustion system. Inside the collection system is a built in trap which seals the combustion system from the connected drain. This condensate should be neutralized to avoid damage to the drainage system or piping.

Outdoor Sensor

Monitors outdoor temperature and adjusts unit set point to provide greater efficiency.

0-10 Volt Input / 4-20 mA Input (with Optional Connection Card)

Allows the installer to connect a BMS (Building Management System) to control the boiler.

Condensate Trap and Air Pressure Switch

The condensate trap and air pressure switch prevent condensate and heat exchanger exhaust from backing up into the boiler.

Pump Service Mode

Allows manual operation of pumps to commission system and check pump operation.

Internal By-Pass Valve

Protects the boiler from damage in low flow conditions.

Internal ECM Pump

The internal ECM Pump uses less electricity than standard pumps, providing high performance operation.

B. Optional Equipment

Optional equipment available from NTI (and Part #):

• System Sensor (84010)

• 3” PVC Concentric Vent Kit (84634)

• 3” PVC Low Profile Vent Kit (84357)

• 2” PVC Low Profile Vent Kit (85062)

• Tank Sensor (84632)

NOTE: When using an optional system sensor, pipe insulation must be wrapped around it to improve temperature measurement accuracy and increase overall system efficiency.

12

CAUTION

COLD WEATHER HANDLING

- If the boiler has been stored in a very cold location (BELOW 0 o

F) before installation, handle with care until the components come to room temperature. Failure to do so could result in damage to the boiler.

Carefully consider installation when determining boiler location.

Please read the entire manual before attempting installation.

Failure to properly take factors such as boiler venting, piping, condensate removal, and wiring into account before installation could result in wasted time, money, and possible property damage and personal injury.

A. Locating the Boiler

WARNING

This boiler is certified for indoor use only. DO NOT INSTALL

OUTDOORS. Outdoor installations ARE NOT covered by warranty.

Failure to install the boiler indoors could result in property damage, severe personal injury, or death.

Incorrect ambient conditions can lead to damage to the heating system and put safe operation at risk. Ensure that the installation location adheres to the information included in this manual. Failure to do so could result in property damage, serious personal injury, or death. Failure of boiler or components due to incorrect operating conditions IS NOT covered by product warranty.

This boiler must be installed upright in the vertical position as described in this manual. DO NOT attempt to install this boiler in any other orientation. Doing so will result in improper boiler operation and property damage, and could result in serious personal injury or death.

1. Installation Area (Mechanical Room) Operating Conditions

• Ensure ambient temperatures are higher than 32 o

F / 0 o

C and lower than 104 o

F / 40 o

C

• Prevent the air from becoming contaminated by the products, places, and conditions listed in this manual

• Avoid continuously high levels of humidity

• Never close existing ventilation openings

• Ensure a minimum 1” clearance around hot water and exhaust vent pipes

• NOTE: To prevent condensing in the fan, it is recommended to avoid prolonged exposure to temperatures below 45 o

F

WARNING

This boiler has a condensate disposal system that may freeze if exposed to sustained temperatures below 32 o

F. Precautions should be taken to protect the condensate trap and drain lines from sustained freezing conditions.

WARNING

Circulators suitable for DHW applications must be used.

Failure to take precautions could result in property damage, severe personal injury, or death.


CAUTION

The service life of the boiler’s exposed metallic surfaces, such as the casing, as well as internal surfaces, such as the heat exchanger, are directly influenced by proximity to damp and salty marine environments. In such areas higher concentration levels of chlorides from sea spray coupled with relative humidity can lead to degradation of boiler components. In these environments, boilers must not be installed using direct vent systems which draw outdoor air for combustion. Such boilers must be installed using room air for combustion. Indoor air will have a much lower relative humidity, and hence potential corrosion will be minimized.

Failure of the boiler or components due to incorrect operating conditions IS NOT covered by product warranty.

2. Check for nearby connections to:

• System water piping

• Venting connections

• Gas supply piping

• Electrical power

• Condensate drain

3. Check area around boiler. Remove any combustible materials, gasoline, and other flammable liquids.

WARNING

Failure to keep the boiler area clear and free of combustible materials, liquids, and vapors can result in substantial property damage, severe personal injury, or death.

4. Gas control system components must be protected from dripping water during operation and service.

5. If the boiler is to replace an existing boiler, check for and correct any existing system problems, such as:

• System leaks

• Location that could cause the system and boiler to freeze and leak

• Incorrectly sized expansion tank

CAUTION

Always take future maintenance into consideration when locating the boiler. If the boiler is located in an installation location with limited clearances, it may be necessary to remove the boiler from the space to perform maintenance. Failure to consider maintenance when determining installation location could result in property damage.

6. Clean and flush system when reinstalling a boiler.

WARNING

Do not introduce toxic chemicals, such as antifreeze or appliance treatments, into any piping meant for potable water purposes.

Do not connect the appliance DHW connections to any heating systems or components that have been previously used for nonpotable applications.

Ensure that all piping and components connected to the appliance are suitable for potable water applications.

Failure to follow these instructions could result in serious personal injury or death.

13


NOTE: When installing in a zero clearance location, it may not be possible to read or view some product labeling. It is recommended to make note of the boiler model and serial number.

NOTE: A combustible door or removable panel is acceptable front clearance.

B. Leveling

CAUTION

In order for the condensate to properly flow out of the collection system, the area where you locate the boiler must be level. Failure to do so will result in improper appliance operation.

Correct installation

Figure 4 - Proper levelling

Incorrect installation

C. Clearances for Service Access

NOTE: If you do not provide the minimum clearances shown in Figure

5 and Table 5 it might not be possible to service the boiler without removing it from the space.

C

B B

Figure 5 - Minimum Clearances

Dimension

A

B

C

D

Not Displayed

Description

Top

Right or Left Side

Front

Bottom

Back

Table 5 - Minimum Installation and Service Clearances

14

Clearance

14” (355.6 mm)

2” (50.8 mm)

18” (457.2 mm)

12” (304.8 mm)

0” (0 mm)

NOTE: For closet installations, a combustible door or removable panel is acceptable front clearance. A 3” minimum clearance must be provided from the appliance front cover to the removable panel or combustible door.

Minimum Clearances from Combustible Materials

• Hot water pipes - at least 1” from combustible materials

• Exhaust vent pipe - at least 1” from combustible materials

CAUTION

All boilers eventually leak. Locate the boiler where any leakage from the relief valve, related piping, tank, or connections will not result in damage to surrounding areas or lower floors of the building. Any boiler should be installed in such a manner that if it should leak the resulting flow of water will not cause damage to the area in which it is installed. If the boiler is installed in a location where a leak could cause damage, it is required to provide containment measures. Such measures include but are not limited to: a properly sized drain pan installed beneath the boiler and piped to an open drain line, or installing the boiler on a concrete floor pitched to a free flowing drain. Failure to provide containment measures is the sole responsibility of the owner and/or installer. Leakage damages

ARE NOT covered by warranty.

In addition, water leak detection devices and automatic water shutoff valves are readily available at plumbing supply houses. IT

IS HIGHLY RECOMMENDED BY THE MANUFACTURER TO INSTALL

WATER LEAK DETECTION DEVICES AND AUTOMATIC SHUTOFF

VALVES IN ANY BOILER INSTALLATION WHERE A LEAKAGE OF

WATER COULD RESULT IN PROPERTY DAMAGES.

WARNING

The space must be provided with combustion / ventilation air openings correctly sized for all other appliances located in the same space as the boiler. The boiler cover must be securely fastened to prevent the boiler from drawing air from the boiler room. This is particularly important if the boiler is in a room with other appliances.

Failure to comply with the above warnings could result in substantial property damage, severe personal injury, or death.

D. Wall Mounting Considerations

These boilers are wall mounted. Use only the wall mounting instructions included with this boiler.

Ensure the wall that the boiler is intended to be mounted on is comprised of cement, brick, block, or wooden studs spaced 16” apart from center. Ensure the wall is capable of supporting at least 150 lbs

(68 kgs).

If flooding is possible, elevate the boiler to prevent floodwater from reaching the boiler.

Ensure the boiler is installed in a location that minimizes the risk of water damage due to leaking valves, pumps, unions, etc.

The boiler may be installed on any suitable internal wall (suitable soundproofing may be required when installing onto a stud partition wall).

WARNING

Ensure that the structure of the installation location is sufficient to support the full installed weight of the boiler, including water content of the heat exchanger and related piping and components. If the mounting location cannot support a minimum of 150 lbs. (68 kg), it is recommended to locate the boiler in a mounting location that can support the minimum weight. Failure to ensure the structure of the installation location is structurally sound before installation of the boiler and properly mount the boiler can result in structural failure, substantial property damage, severe personal injury, or death.

WARNING

Do not mount the boiler to a hollow wall.

E. Wall Mounting Instructions

WARNING

This boiler is too heavy for one person to lift. It is highly recommended to install the boiler with two people. Use caution as to not drop the boiler, which could damage the boiler and cause property damage and/or severe personal injury. Verify that the boiler is properly and securely mounted before leaving unsupervised. Failure to comply with the above and properly mount the boiler could result in substantial property damage, severe personal injury, or death.

1. Mounting to a concrete wall

Position the paper template on the concrete wall to locate the positions of the hanging bracket and piping bracket.

Drill and plug the wall and secure the hanging bracket using the screws provided (fisher S 10x50). Ensure the hanging bracket is level.

Secure the piping bracket on the concrete wall. Use suitable hardware.


2. Mounting to a Wood Studded Wall

CAUTION

If the boiler is not installed upright, vertically plumb, and level, improper and unsatisfactory operation may occur, causing excessive condensation build-up, nuisance fault codes, and unnecessary maintenance.

To install the boiler on a standard wood studded wall with 16” centers, a plywood board is required. The minimum dimensions of the plywood board are: 24” wide x 48” high x 1/2” thick.

Use at least fourteen (14) #12 x 3” (3/16” x 3”) round head tapping screws to secure the plywood board to the studded wall.

16 “

16”

(406,4 mm)

d

Ply wood boar

Dimensions:

24" wide x 48" high x 1/2" thick

STUD

4-3/4”

(120 mm)

4-3/4”

(120 mm)

boar d is minimum d to requir ed. wood ply e the

The boar

13”

To

Use

Aft ins

Loc tall er the ply ate on a standar d w wall tapping ood studded head e: 24" wide x 48" high x 1/2" thick

TO A

WOOD STUDDED (3/16"

#12 x 3" the boiler wood boar

(14)

WALL MOUNTING INSTR ack ashers f piping adapt

Moun ack et on the ply x 3") brack ack d has been installed t hanging the concr round ting d. U ood moun

(330 mm)

ete wall to loc ack et u a ply wood scr ew s to secur four teen dimensions of the ply at least the studded w

UC

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Position ack et drilling holes

, position the paper t d. U se the har wood boar vel e le adapt dw se suitable har are deliv dw se suitable har are .

are of the brack

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15-3/4”

(400 mm)

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2-9/16”

(65 mm)

2-5/8”

(67 mm)

1-1/8”

2-5/8”

(67 mm)

2-9/16”

(65 mm)

50

100

150

200

250

3-7/16”

(87,2 mm)

3-7/16”

(87,6 mm)

3-7/16”

(87,6 mm)

3-7/16”

(87,2 mm)

Figure 6 - Mounting to a concrete wall

WARNING

This wall mounting system is not seismic rated and should not be applied as such. Failure to comply with the above and properly mount the boiler could result in substantial property damage, severe personal injury, or death.

Use extreme care not to drop the boiler or cause bodily injury while lifting or mounting the boiler onto the wall mount bracket.

Failure to follow these instructions could result in property damage, severe personal injury, or death.

The manufacturer cannot anticipate all installation conditions. These instructions and included parts may not apply to wall-mounting the appliance at your installation location. The appliance must be properly and securely mounted by a qualified installer according to installation conditions, the technical specifications of the appliance, and to meet AHJ / building code requirements. All applicable permits must be obtained before installing the appliance. Failure to follow these instructions could result in property damage, severe personal injury, or death. Any damages resulting from improper installation are not covered by product warranty.

Figure 7 - Mounting a playwood board

15


16 “

16”

(406,4 mm)

d

Ply wood boar

Dimensions:

24" wide x 48" high x 1/2" thick

STUD

4-3/4”

(120 mm)

4-3/4”

(120 mm)

ed.

The

13”

(330 mm)

wall a ply d is requir ply wood scr ew boar s to secur e the tapping empla wood te on the ply the moun wall minimum boar d to wood and ting

MOUNTING

To install the four teen

(14)

RUC dimensions of the ply

Use at least d ar x 3" d w e: 24" wide x 48" high x 1/2" thick

(3/16" x 3") round

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WALL MOUNTING INST rack or w ood moun et on the ply ashers f et o

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15-3/4”

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F. Residential Garage and Closet Installations

CAUTION

Check with your local Authority Having Jurisdiction for requirements when installing boiler in a garage or closet. Please read the entire manual before attempting installation. Failure to properly take factors such as boiler venting, piping, condensate removal, and wiring into account before installation could result in wasted time, money, and possible property damage and personal injury.

Precautions

If the boiler is located in a residential garage, per ANSI Z223.1:

• Mount the bottom of the boiler a minimum of 18” above the floor of the garage to ensure the burner and ignition devices are well off the floor.

• Locate or protect the boiler so it cannot be damaged by a moving vehicle.

WARNING

The space must be provided with correctly sized combustion/ ventilation air openings for all other appliances located in the space with the boiler. For power venting installations using room air for combustion, refer to the boiler venting section, this manual, for descriptions of confined and unconfined spaces. Do not install the boiler in an attic. Failure to comply with these warnings could result in substantial property damage, severe personal injury, or death.

2-9/16”

(65 mm)

2-5/8”

(67 mm)

1-1/8”

2-5/8”

(67 mm)

2-9/16”

(65 mm)

20

40 60

20 psi 80

250

200

50 100

150

3-7/16”

(87,2 mm)

3-7/16”

(87,6 mm)

3-7/16”

(87,6 mm)

3-7/16”

(87,2 mm)

16 “

16 “

Figure 8 - Mounting the hanging bracket and piping bracket

After the plywood board has been installed to the studs, position the paper template on the plywood.

Locate the positions of the hanging bracket and piping adapter bracket. Position the wall mounting and piping adapter brackets.

Ensure the brackets are level. Then mark the bracket drilling holes.

Mount the boiler bracket on the plywood board. Use the hardware delivered with the boiler (fisher S 10x50) and washers for wood mounting.

Mount the piping bracket on the plywood board. Use suitable hardware .

G. Exhaust Vent and Intake Pipe

The boiler is rated ANSI Z21.13 Category IV (pressurized vent, likely to form condensate in the vent) and requires a special vent system designed for pressurized venting.

NOTE: The venting options described here (and further detailed in the Venting section, this manual) are the lone venting options approved for this boiler. Failure to vent the boiler in accordance with the provided venting instructions will void the warranty.

DANGER

Failure to vent the boiler properly will result in serious personal injury or death.

WARNING

Do not attempt to vent this boiler by any means other than those described in this manual. Doing so will void the warranty and may result in severe personal injury or death.

Vents must be properly supported. Boiler exhaust and intake connections are not designed to carry heavy weight. Vent support brackets must be within 1’ of the boiler and the balance at 4’ intervals. Boiler must be readily accessible for visual inspection for first 3’ from the boiler. Failure to properly support vents could result in property damage, severe personal injury, or death.

The exhaust discharged by this boiler may be very hot. Avoid touching or other direct contact with the exhaust gases of the vent termination assembly. Doing so could result in severe personal injury or death.

1. Direct Vent of Exhaust and Intake

If installing a direct vent option, combustion air must be drawn from the outdoors directly into the boiler intake and exhaust must terminate outdoors. There are three basic direct vent options detailed in this manual: 1. Side Wall Venting, 2. Roof Venting, and 3. Unbalanced

16

Venting.

Be sure to locate the boiler such that the exhaust vent and intake piping can be routed through the building and properly terminated.

Different vent terminals can be used to simplify and eliminate multiple penetrations in the building structure (see Optional Equipment in

Venting Section). The exhaust vent and intake piping lengths, routing, and termination methods must all comply with the methods and limits given in the Venting Section, this manual.

When installing a combustion air intake from outdoors, care must be taken to utilize uncontaminated combustion air. To prevent

combustion air contamination, see Table 6.

2. Power Venting, Indoor Combustion Air in Confined or

Unconfined Space

This boiler requires fresh, uncontaminated air for safe operation and must be installed in a mechanical room where there is adequate combustion and ventilating air. NOTE: To prevent combustion air contamination,

see Table 6.

Combustion air from the indoor space can be used if the space has adequate area or when air is provided through a duct or louver to supply sufficient combustion air based on the boiler input. Never obstruct the supply of combustion air to the boiler. If the boiler is installed in areas where indoor air is contaminated (see Table 6) it is imperative that the boiler be installed as direct vent so that all combustion air is taken directly from the outdoors into the boiler intake connection.

Unconfined space is space with volume greater than 50 cubic feet per

1,000 BTU/hr (4.8 cubic meters per kW) of the total input rating of all fuelburning appliances installed in that space. Rooms connected directly to this space through openings not furnished with doors are considered part of the space. See Venting Section for details.

Confined space is space with volume less than 50 cubic feet per 1,000

BTU/hr (4.8 cubic meters per kW) of the total input rating of all fuelburning appliances installed in that space. Rooms connected directly to this space through openings not furnished with doors are considered part of the space.

When drawing combustion air from inside a conventionally constructed building to a confined space, such space should be provided with two permanent openings: one located 6” (15 cm) below the space ceiling, the other 6” (15cm) above the space floor. Each opening should have a free area of one square inch per 1,000 BTU/hr (22cm 2 /kW) of the total input of all appliances in the space, but not less than 100 square inches (645cm 2 ).

If the confined space is within a building of tight construction, air for combustion must be obtained from the outdoors as outlined in the

Venting section of this manual.

CAUTION

When drawing combustion air from the outside into the mechanical room, care must be taken to provide adequate freeze protection.

WARNING

Failure to provide an adequate supply of fresh combustion air can cause poisonous flue gases to enter the living space, resulting in severe personal injury or death. To prevent combustion air contamination, see Table 6.

H. Carbon Monoxide Detectors

In the Commonwealth of Massachusetts and As Required by State and Local Codes:

Installation of Carbon Monoxide Detectors: At the time of installation or replacement of the vented gas fueled appliance, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the floor level where the gas appliance is installed, unless the appliance is located in a detached, uninhabitable structure separate from the dwelling, building, or structure used in whole or in part for residential purposes.

In addition, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is


installed on each additional level of the dwelling, building, or structure served by the vented gas appliance. It shall be the responsibility of the property owner to secure the service of qualified licensed professionals for the installation of hard wired carbon monoxide detectors.

a. In the event that the vented gas fueled appliance is installed in a crawl space or attic, the hard wired carbon monoxide detector with alarm and battery back-up shall be installed on the next adjacent floor level.

b. In the event that these requirements cannot be met at the time of completion of installation, the owner shall have a period of thirty

(30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.

WARNING

Do not attempt to vent this appliance by any means other than those described in this manual. Doing so will void the warranty and may result in severe personal injury or death.

Approved Carbon Monoxide Detectors: Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 70 and be ANSI/UL 2034 listed and IAS certified.

I. Prevent Combustion Air Contamination

Install intake air piping for the boiler as described in the Venting

Section, this manual. Do not terminate exhaust in locations that can allow contamination of intake air.

WARNING

Ensure that the intake air will not contain any of the contaminants in Table 6. Contaminated air will damage the boiler, resulting in possible substantial property damage, severe personal injury, or death. For example, do not pipe intake air near a swimming pool or laundry facilities. These areas always contain contaminants.

Products to Avoid

Spray cans containing fluorocarbons

Permanent wave solutions

Chlorinated waxes / cleaners

Areas Likely to H ave

Contaminants

Dry cleaning / laundry areas and establishments

Swimming pools

Metal fabrication plants chemicals

Calcium chloride used for thawing

Sodium chloride used for water softening

Refrigerant leaks

Refrigeration repair shops

Photo processing plants

Auto body shops

Paint or varnish removers

Hydrochloric or Muriatic acid

Plastic manufacturing plants

Furniture refinishing areas and establishments

New building construction Cements and glues

Antistatic fabric softeners used in clothes dryers

Remodeling areas detergents, and cleaning solvents

Adhesives used to fasten building products

Table 6 - Products and Areas Likely to Have Contaminants

NOTE: DAMAGE TO THE BOILER CAUSED BY EXPOSURE TO

CORROSIVE VAPORS IS NOT COVERED BY WARRANTY. (Refer to the limited warranty for complete terms and conditions.)

17


Figure 9 - CO Warning Label

J. Removing a Boiler from a Common Vent System

DANGER

Do not install the boiler into a common vent with any other appliance.

This will cause flue gas spillage or appliance malfunction, resulting in possible substantial property damage, severe personal injury, or death.

WARNING

Failure to follow all instructions can result in flue gas spillage and carbon monoxide emissions, causing severe personal injury or death.

When removing an existing boiler, follow the steps below.

1. Seal any unused openings in the common venting system.

2. Visually inspect the venting system for proper size and horizontal pitch to determine if there is blockage, leakage, corrosion, or other deficiencies that could cause an unsafe condition.

3. If practical, close all building doors, windows, and doors between the space in which the boiler remains connected to the common venting system and other spaces in the building. Turn on clothes dryers and any appliances not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, at maximum speed. Do not operate a summer exhaust fan. Close all fireplace dampers.

4. Place in operation the appliance being inspected. Follow the lighting instructions. Adjust the thermostat so the appliance will operate continuously.

5. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle or smoke from a cigarette.

6. After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined, return doors, windows, exhaust fans, fireplace dampers, and any other gas burning appliances to their previous condition of use.

7. Any improper operation of the common venting system should be corrected to conform to the National Fuel Gas Code, ANSI Z223.1.

When resizing any portion of the common venting system, the system should approach the minimum size as determined using the appropriate tables in Appendix G of ANSI Z223.1.

18


K. Technical Specifications

Model

Type

Installation

Space Heating

Minimum / Maximum Input (Btu/Hr)

1

Domestic Hot Water

Minimum / Maximum Input (Btu/Hr)

1

DOE AFUE

2

(%)

Heating Capacity

1, 2

(MBH)

Hot Water Capacity

35 o

F Rise

45 o

F Rise

77 o

F Rise

Flue System

Minimum - Maximum Exhaust Vent Run

3

Minimum - Maximum Intake Air Pipe Run

3

TRX085

9,400 / 85,000

TRX120 TRX110C

Boiler

Indoor, Wall Hung, Fully Condensing

13,200 / 120,000 11,200 / 106,000

Combi

TRX150C

13,200 / 120,000

N/A

96

79

N/A

N/A

N/A

N/A 11,200 / 114,000

95

111

N/A

N/A

N/A

95.5

98

6.8

5.3

3.1

Category IV, Sealed Combustion Direct Vent, Power Vent

2” (6 - 100 feet), 3” (6 - 150 feet)

2” (0 - 100 feet), 3” (0 - 150 feet)

13,200 / 150,000

95

111

8.5

6.6

3.8

Approved Exhaust Vent Materials

Gas Supply

Pressure

Shipping Weight (lbs)

NG

Power Supply

LP

General Operating Conditions

Ignition System

Burner System

Gas Valve System

Dimensions

(in Inches)

W

H

D

Approx. Full Boiler Weight (lbs)

3

78 84

PVC, CPVC, PP, Stainless Steel

83

3.5” to 10.5” WC

8” to 13” WC

120V, 60 Hz, less than 12A

Ambient Temperature Range: 33 – 104 o

F (0.6 – 40 o

C)

Product Approvals and Requirements: ANSI Z21.13 / CSA 4.9

Direct Electronic Spark Ignition / Flame Rectification

Premixed Fuel Modulation / Stainless Steel Burner

Air Ratio Valve

16” 3/64

43” 5/8

15” 1/8

88.6

91

84

88.2

92.8

Boiler Water Content (Gallons)

Boiler Setpoint Temperature Range

DHW Indirect Setpoint Temperature Range

DHW Setpoint Range (Combi Models)

Water Pressure (PSI)

Heat Exchanger MAWP

Pressure Relief Valve

DHW Max Pressure

Control Panel / Main Controller

CH Supply / Return

Connection

Sizes

DHW Inlet / Outlet

Gas Inlet

Materials

Cabinet

Heat Exchanger

Safety Devices

1.1

1.2

1.1

68 – 113 o

F Low Temperature / 95 - 179 o

F High Temperature

104 – 149 o

F

97 – 140 o

F

55

1.2

N/A

30

N/A 125

AristonThermo LCD Display / AristonThermo GALEVO2 Control

125

1” Male Sweat with Adapter

3/4” Male Sweat with Adapter

3/4” Male NPT

Painted Steel and Plastic

SA-312 Type 304L Stainless Steel Water Tube

Flame Rectifier Probe, Temperature Limit Control (190 o

F), Water Pressure Switch (Min. 8 PSI), Freeze

Protection, Blocked Condensate Pressure Switch, Condensate Trap, Flue Temperature High Limit Sensor

(210 o

F), Blocked Vent Pressure Switch

Table 7 - Technical Specifications

NOTES:

1

Listed Input and Output Ratings are at minimum vent lengths at an altitude of 0 - 2000 ft. Numbers will be lower with longer venting and/or altitudes greater than 2000 ft.

2

3

Ratings based on standard test procedures prescribed by the US Department of Energy.

The TRX requires a special venting system. Use only the vent materials and methods detailed in these installation instructions.

19


4-5/16” (110 mm)

4-3/4”

(120 mm)

4-3/4”

(120 mm)

15-3/4”

(400 mm)

2-9/16”

(65mm)

2-5/8”

(67mm)

2-5/8”

(67mm)

2-9/16”

(65mm)

A

3-7/16”

(87,2 mm)

B

3-7/16”

(87,6 mm)

C

3-7/16”

(87,6 mm)

D

3-7/16”

(87,2 mm)

E

Figure 10 - Boiler Dimensions - NOTE: All Dimensions Are Approximate

Model

A - Central Heating Supply

B - Return from Indirect Water Heater

C - Gas Inlet

D - Domestic Hot Water Inlet

E - Central Heating Return

F - Pressure Relief Valve

Table 8 - Boiler Adapter Dimensions

TRX085 TRX120

1”

3/4”

3/4”

Not Used

1”

20

15-5/16”

(390 mm)

5-7/8”

(150 mm)

2-3/16”

(55,3mm)

Model

A - Central Heating Supply

B - Domestic Hot Water Outlet

C - Gas Inlet

D - Domestic Hot Water Inlet

E - Central Heating Return

F - Pressure Relief Valve

TRX110C

1”

3/4”

3/4”

3/4”

1”

TRX150C

TRX085 - TRX120

1

11

11

12

13

2

6

7

3

4

5

8

9


21

20

19

18

17

15

14

25

24

23

22

26

5.

6.

7.

8

1.

2.

3.

4.

9.

11.

12.

13.

14.

Pressure relief valve

Air purge valve

Boiler outlet temperature sensor

Air pressure switch

Flue gas temperature sensor

Main heat exchanger

Flame detection electrode

Silencer

Junction box

Condensate trap

Gas valve

Control panel

CH circuit filter

Figure 11 - Boiler Component Locations and Descriptions

15.

17.

18.

19.

Circulation Pump with auto air vent

Water pressure switch

Modulating Fan

Boiler inlet temperature sensor

20. Frame

21. Ignition electrode

22.

23.

Spark generator

Combustion Analysis Test Point

24.

25.

26.

Air intake connection

Exhaust vent connection

Diverter valve

21


TRX110C - TRX150C

1

2

3

4

5

6

7

8

9

10

11

12

13

11

5.

6.

7.

8

1.

2.

3.

4.

9.

10.

11.

12.

13.


Air purge valve


Air pressure switch


Main heat exchanger


Silencer

Junction box

DHW heat exchanger

Condensate trap

Gas valve

Control panel

Figure 12 - Combi Boiler Component Locations and Descriptions

22

22.

23.

24.

25.

26.

14.

15.

16.

17.

CH circuit filter


DHW Flow switch


18.

19.

Modulating Fan

Boiler inlet temperature sensor

20. Frame

21. Ignition electrode

Spark generator




Diverter valve

25

24

23

22

21

20

16

15

14

19

18

17

26

TRX110C - TRX150C

1

2

6

7

19

3

12

10

28

11

29 psi

°F

9.

10.

11.

12.

13.

14.

15.

16.

5.

6.

7.

8

1.

2.

3.

4.

A

B C D E


Air purge valve


Air pressure switch


Main heat exchanger


Silencer

Junction box

DHW heat exchanger

Condensate trap

Gas valve

Control panel

CH circuit filter


DHW Flow switch

17.

18.


Modulating Fan

19. Boiler inlet temperature sensor

20. Frame

21.

22.

23.

24.

Ignition electrode

Spark generator



25.

26.


Diverter valve

27. By-pass

28. Drain valve

29. Pressure gauge

Figure 13 - Water Circuit Diagrams

15

17

26

27

16

14

214


TRX085 - TRX120

1

2

6

7

21

18

19

3

18

12

27

11

28

29 psi

°F

A

R

C

B

E

15

17

26

14

23


WARNING

Failure to follow the instructions in this section WILL VOID the warranty and may result in property damage, severe personal injury, or death.

The National Standard Plumbing Code, the National Plumbing Code of Canada, and the Uniform Plumbing Code limit heat transfer fluid pressure to less than the minimum working pressure of the potable water system up to 30 PSI maximum. In addition, the heat transfer fluid must be water or another non-toxic fluid having a toxicity of

Class 1, as listed in Clinical Toxicology of Commercial Products,

5th Edition. Failure to follow this warning could result in property damage, severe personal injury, or death.

CAUTION

Do not apply a torch within 12” of the boiler. If sweat connections are used, sweat tubing to the adapter before fitting adapter to the water connections on the boiler. Damages due to improper installation practices ARE NOT covered by warranty.

Dielectric unions or galvanized steel fittings must not be used in a system with this boiler. Doing so WILL VOID the warranty. Use only copper, brass, or stainless steel fittings. Teflon thread sealant must be used on all connections.

Plumbing of this product should only be done by a qualified, licensed plumber in accordance with all local plumbing codes. The boiler may be connected to an indirect water heater to supply domestic hot water.

NTI offers indirect water heaters in a wide range of gallon sizes in either stainless steel or glass-lined construction.

A. General Plumbing Information

CAUTION

The building piping system must meet or exceed the the piping requirements in this manual.

Use two wrenches when tightening water piping at boiler. Use one wrench to prevent the boiler return or supply line from turning.

Failure to prevent piping connections from turning could cause damage to boiler components.

The boiler control module uses temperature sensors to provide both high limit protection and modulating temperature control. The control module may also provide low water protection by sensing the water level in the heat exchanger. Some codes/jurisdictions may require additional external controls.

The water connections must be installed in accordance with all local and national plumbing codes, or any applicable standard with prevails.

• Pipe material must be suitable to meet local codes and industry standards.

• The pipe must be cleaned and without blemish before any connections are made.

• The size of the DHW pipes should be 3/4” diameter, and the CH pipes should be 1” diameter.

• Isolation (shut-off valves) should be used on both the CH and DHW loops to ease future servicing.

• All piping should be insulated.

It is recommended to install a sweat shut-off valve and a union in the return and supply piping to ease future servicing. If there is a backflow preventer or any type of a no return valve in the system, install an additional tee here suitable for an expansion tank.

NOTE: The addition of a high temperature limiting device is important if the boiler is to be connected to a domestic hot water system.

B. Backflow Preventer

Use a backflow preventer specifically designed for hydronic boiler installations. This valve should be installed on the cold water fill supply line per local codes.

C. Expansion Tank

Expansion Tank and Make-Up Water

1. Ensure that the expansion tank is designed and sized to correctly handle boiler and system water volume and temperature.

WARNING

Expansion tanks must be sized according to total system volume. This includes all length of pipe, all fixtures, boilers, etc. Failure to properly size for system expansion could result in wasted time, money, possible property damage, serious personal injury, or death.

CAUTION

Undersized expansion tanks cause system water to be lost from the relief valve, causing make-up water to be added. Eventual boiler failure can result due to excessive make-up water addition.

SUCH

FAILURE IS NOT COVERED BY WARRANTY.

DO NOT

install automatic air vents on closed type expansion tank systems. Air must remain in the system and return to the tank to provide an air cushion. An automatic air vent would cause air to leave the system, resulting in improper operation of the expansion tank.

Model

TRX085

TRX120

TRX110C

Heat Exchanger Volume (Gallons)

1.1

1.2

1.1

TRX150C

1.2

Table 9 - Heat Exchanger Water Volume (To Aid in Expansion Tank Sizing)

2. The expansion tank must be located as shown in Applications, this manual, or following recognized design methods. See expansion tank manufacturer’s instructions for details.

3. Connect the expansion tank to the air separator only if the air separator is on the suction side of the circulator. Always install the system fill connection at the same point as the expansion tank connection to the system.

4. Most chilled water systems are piped using a closed type expansion tank.

DIAPHRAGM (OR BLADDER) EXPANSION TANK

Always install an automatic air vent on top of the air separator to remove residual air from the system.

D. Piping the Boiler

CAUTION

Boiler Models should not be operated as a direct potable hot water heater. Only Combi Models should be used to directly heat hot water.

Use at least the MINIMUM pipe size for all appliance loop piping.

This is to avoid the possibility of inadequate flow through the appliance. Using less than the required minimum pipe size and piping could result in system problems, property damage, and premature appliance failure. Such problems ARE NOT covered by product warranty.

NOTE: Observe the minimum 1” clearance around all uninsulated hot water pipes when openings around pipes are not protected by noncombustible materials.

24


Connect the 3/4” DHW inlet and outlet pipes. A shut-off valve between the city water supply and DHW inlet is recommended for ease of service.

NTI offers threaded 3/4” DHW tankless isolation valves with a DHW pressure relief valve for ease of installation and future service.

Connect the 1” CH return and supply pipes. Isolation valves are recommended for ease of service.

TRX085 or TRX120 only Heating

TRX110C

I

L

I

L

0

0

20

20

50

40 psi

60

80

100 150

250

200

C

A

E

TRX085 or TRX120 with Indirect Water Heater

0

20

0

20

40 psi

50

60

80

250

100 150

200

C

A B

TRX150C

D E

I

L

I

L

0

0

20

20

40 psi

60

80

50

250

100 150

200

A

B

C

E

TRX085 - TRX120

A. CH Supply 1”

B. Return from Indirect Water Heater 3/4"

C. Gas Inlet 3/4"

D. Not Used

E. CH Return 1”

I. Drain Valve

L. Condensate Discharge

Figure 14 - Water / Gas Connections

0

0

20

20

40 psi

60

80

50

250

100 150

200

C

A

B

D E

TRX110C - TRX150C

A. CH Supply 1”

B. DHW Outlet 3/4"

C. Gas Inlet 3/4"

D. DHW Inlet 3/4"

E. CH Return 1”

I. Drain valve

L. Condensate discharge

25


E. Internal Circulation Pump

To calculate the size of the heating installation refer to the graph below.

Graph Representing the Available Circulation Pump Head

feet

24

20

16

12

8

4

0

0 1 2 3 4

gal/min

Table 10 - Internal Circulation Head Curve

5 6 7

F. By-Pass Valve

This boiler has a by-pass valve which requires no adjustment.

The by-pass valve protects the heat exchanger from overheating by guaranteeing a minimum flow rate of 2 gpm within the primary heat exchanger. This protects the primary heat exchanger from overheating when water circulation is insufficient or heating system load is reduced

(ex: due to the response of thermostatic valves or zone valves).

The by-pass valve is located:

- in the left hydraulic block for TRX085 and TRX120.

- in the right hydraulic block , behind the three-way valve, for

TRX110C and TRX150C.

TRX085 - TRX120

By-Pass Valve

Location

TRX110C - TRX150C

By-pass valve location

Figure 15 - Internal Circulation Pump NOTE: Ensure the Air Vent on the

Internal Circulation Pump Remains Open after Installation

Figure 16 - By-Pass Valve Location

Figure 17 - By-Pass Valve Assembly

26

G. CH and DHW Pressure Relief Valves

An external pressure relief valve must be installed on this appliance for the

CH loop. When installing, observe the following guidelines.

This boiler has a high-temperature shut-off switch built in as a standard safety feature. Therefore, a “pressure only” relief valve is required.

DO NOT operate this appliance before the supplied pressure relief valve is installed with sufficient relieving capacity in accordance with the ASME rating plate on the appliance.

WARNING

The pressure relief valve must be installed with the provided adaptor pipe in the top of the boiler as detailed in Figure 19. No other valves should be placed between the pressure relief valve and the appliance.

Failure to comply with these guidelines can result in substantial property damage, personal injury, or death.

CH Loop

This boiler is provided with a CH pressure relief valve that complies with the ANSI/ASME Boiler and Pressure Vessel Code, Section IV (Heating

Boilers). The included 30 psi CH Pressure Relief Valve must be installed at the top of the boiler, using the included pipe adapter and grommet, as illustrated below.

DO NOT install a relief valve with a pressure rating in excess of 50 psi

- the maximum allowable operating pressure of the boiler. The relief valve capacity must exceed the BTU/H input capaciy of the boiler. To install the pressure relief valve proceed as follows:

1. Remove the plastic cover on the top of the boiler.

2. Remove the nut on the flow pipe.

Figure 18 - Remove the Caps

3. Insert the pipe and gasket.


4. Connect the pressure relief valve and gasket.

NOTE: To maintain an airtight seal, ensure the gasket boot is properly fitted into the top of the boiler cabinet.

Figure 20 - Connect CH Pressure Relief Valve

DHW Loop (Combi Models)

The DHW piping must be provided with a DHW pressure relief valve that complies with local codes, but not less than valves certified as meeting the requirements of Relief Valves for Hot Water Supply Systems, ANSI

Z21.22 / CSA4.4 by a nationally recognized lab that maintains periodic inspection of production listed equipment.

A DHW pressure relief valve is not included with the boiler, and is to be field supplied and installed in the DHW piping. DO NOT install a DHW relief valve with a pressure rating greater than 125 psi - the maximum allowable operating pressure of the boiler’s DHW circuit.

After installing the relief valves and filling and pressurizing the system, test the operation of the valves by lifting the levers.

Make sure the valves discharge freely. If a valve fails to operate correctly, replace it with a new relief valve.

The relief valve capacity must exceed the BTU/H input capacity of the boiler.

Radiant heating

For appliances with underfloor heating, it is possible but not necessary to fit a safety thermostat onto the radiant heating outlet.

If the thermostat cannot be installed, the radiant heating equipment must be protected by a thermostatic valve, or by a by-pass to prevent the floor from reaching too high a temperature.

Figure 19 - Insert the Pipe

27


WARNING

To avoid water damage or scalding due to relief valve operation:

• Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a manner that will prevent possibility of severe burns or property damage should the relief valve discharge.

• Discharge line must be as short as possible and the same size as the valve discharge connection throughout its entire length.

• Discharge line must pitch downward from the valve and terminate at least 6” above the floor drain, making discharge clearly visible.

• The discharge line shall terminate plain, not threaded, with a material serviceable for temperatures of 375 o

F or greater.

• Do not pipe discharge to any location where freezing could occur.

• No valve may be installed between the relief valve and boiler or in the discharge line. Do not plug or place any obstruction in the discharge line.

• Test the operation of the relief valve after filling and pressurizing the system by lifting the lever. Make sure the valve discharges freely. If the valve fails to operate correctly, immediately replace with a new properly rated relief valve.

• Test relief valve at least once annually to ensure the waterway is clear. If valve does not operate, turn the boiler “off” and call a plumber immediately.

• Take care whenever operating relief valve to avoid scalding injury or property damage.

FAILURE TO COMPLY WITH THE ABOVE GUIDELINES COULD

RESULT IN FAILURE OF RELIEF VALVE OPERATION, RESULTING

IN POSSIBILITY OF SUBSTANTIAL PROPERTY DAMAGE, SEVERE

PERSONAL INJURY, OR DEATH.

H. Air Elimination Device

A micro bubble air elimination device must be installed in every boiler installation. Automatic air vents alone are not an acceptable substitute for a micro bubble air elimination device. Here are a few examples of acceptable devices.

• Spirovent

• TACO 4900 Series

• Caleffi Discal

I. Applications*

CAUTION

Mixing valves are required for the protection of low temperature loops.

WARNING

Do not thread a cap or plug into the relief valve or relief valve line under any circumstances! Explosion and property damage, serious injury, or death may result.

RE-INSPECTION OF RELIEF VALVES: Relief valves should be inspected AT LEAST ONCE EVERY THREE YEARS, and replaced if necessary,

by a licensed plumbing contractor or qualified service technician to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally. Certain naturally occuring conditions may corrode the valve and its components over time, rendering the valve inoperative. Such conditions can only be detected if the valve and its components are physically removed and inspected.

Do not attempt to conduct an inspection on your own.

Contact your plumbing contractor for a re-inspection to assure continued safety.

FAILURE TO RE-INSPECT THE RELIEF VALVE AS DIRECTED

COULD RESULT IN UNSAFE TEMPERATURE AND/OR

PRESSURE BUILD-UP WHICH CAN RESULT IN PROPERTY

DAMAGE, SERIOUS PERSONAL INJURY, OR DEATH.

Figure 21 - Piping Symbol Legend

28


Primary/Secondary Piping Shown

Cap this fitting when not in use

Figure 22 - TRX085 / TRX120 with Single Central Heating Circulator

NOTE: In piping applications utilizing a single zone, it is recommended that the installer use flow / check valves with weighted seats at or near the appliance to prevent gravity circulation.

NOTICE

Figure illustrates the basic plumbing requirements for a TRX085 /

TRX120 boiler installation utilizing Primary/Secondary piping when the boiler circulator will not provide adequate flow for the system.

Primary / Secondary is required to provide adequate flow for the secondary circuits.

CAUTION

On TRX085 / TRX120 Models Only.

If the boiler to be used only in Heating Mode (not connected to an indirect water heater), cap the fitting as indicated in the figure above and the electrical connection of the 3-way valve motor

MUST BE DISCONNECTED while the boiler is operating in central heating mode. This will lock the valve motor in central heating mode and ensure freeze protection operates properly. Failure to disconnect the valve may disable boiler freeze protection and result in property damage.

WARNING

The piping will not support the weight of the circulators. Refer to the circulator manufacturer’s instructions to properly support the circulator. Failure to comply with these instructions could result in property damage, severe personal injury, or death.

NOTES:

1. This drawing is meant to show system piping concept only.

Installer is responsible for all equipment and detailing required by local codes.

2. All closely spaced tees shall be within 4 pipe diameters center to center spacing.

3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.

4. The minimum pipe size of DHW piping should be ¾” diameter and

CH piping should be 1” in diameter.

5. Circulators are shown with isolation flanges. The alternative is standard flanges with full port ball valves. Purge valves can be used with circulator flanges as an alternative.

6. Piping shown is Primary/Secondary.

7. Install a minimum of 12 diameters of straight pipe upstream of all circulators.

8. VERY IMPORTANT – Minimum flow rates outlined in this manual

(2 gpm) must be maintained through the heat exchanger to minimize short cycling.

9. In a valve-based system, each heating zone has a zone valve which opens when that zone calls for heat. Each zone thermostat is wired to its corresponding zone valve. Contacts in the zone valves provide a signal to the boiler to operate when there is a call for heat.

10. Unit is equipped with built-in primary pump. This pump is sized to ensure proper flow rate through the boiler heat exchanger and related piping.

11. IWH Applications - a mixing valve is recommended if the DHW temperature is set above the factory setting of 119 o

F.

29



Figure 23 - TRX085 / TRX120 without Central Heating Circulator


NOTICE

Figure illustrates the basic plumbing requirements for a TRX085

/ TRX120 boiler installation without an external Central Heating circulator; the boiler’s internal circulator delivers flow to the heating system. Application is limited to zone valve (or non-circulator) distribution systems with small flow requirements (e.g. systems requiring no more than 5 gpm at 9 ft. of head pressure)

WARNING


NOTES:










7. Unit is equipped with built-in primary pump for the heating

loop. This pump is sized to ensure proper flow rate through the boiler heat exchanger and related piping.


F.

9. In direct (not primary / secondary) piping applications, it is required to increase fill pressure to 20 psi to ensure proper system operation.

30



Primary/Secondary Piping is Required

Figure 24 - TRX085 / TRX120 with Multiple Central Heating Circulators


NOTICE

Figure illustrates the basic plumbing requirements for a TRX085 /

TRX120 boiler installation utilizing Primary/Secondary piping when the boiler circulator will not provide adequate flow for the system.


CAUTION

On TRX085 / TRX120 Models Only.

If the boiler to be used only in Heating Mode (not connected to an indirect water heater), cap the fitting as indicated in the figure above and the electrical connection of the 3-way valve motor

MUST BE DISCONNECTED while the boiler is operating in central heating mode. This will lock the valve motor in central heating mode and ensure freeze protection operates properly. Failure to disconnect the valve may disable boiler freeze protection and result in property damage.

WARNING


NOTES:








6. Piping shown is Primary/Secondary, and is mandatory.







F.

31


Primary/Secondary Piping Shown

Figure 25 - TRX110C / TRX150C with Single Central Heating Circulator


NOTICE

Figure illustrates the basic plumbing requirements for a TRX110C /

TRX150C boiler installation utilizing Primary/Secondary piping when the boiler circulator will not provide adequate flow for the system.


WARNING


NOTES:













32


Figure 26 - TRX110C / TRX150Cwithout Central Heating Circulator


NOTICE

Figure illustrates the basic plumbing requirements for a TRX110C

/ TRX150C boiler installation without an external Central Heating circulator; the boiler’s internal circulator delivers flow to the heating system. Application is limited to zone valve (or non-circulator) distribution systems with small flow requirements (e.g. systems requiring no more than 5 gpm at 9 ft. of head pressure)

WARNING


NOTES:










7. Unit is equipped with built-in primary pump for the heating

loop. This pump is sized to ensure proper flow rate through the boiler heat exchanger and related piping.

8. In direct (not primary / secondary) piping applications, it is required to increase fill pressure to 20 psi to ensure proper system operation.

33


CAUTION

Mixing valves are required for the protection of low temperature loops.

Primary/Secondary Piping is Required

Figure 27 - TRX110C / TRX150C with Multiple Central Heating Circulators


NOTICE

Figure illustrates the basic plumbing requirements for a TRX110C /

TRX150C boiler installation utilizing Primary/Secondary piping when the boiler circulator will not provide adequate flow for the system.


WARNING


NOTES:













34


H. Floor Drying Function

The Floor Drying Function is a special function that allows the installer, through a dedicated heating cycle, to use the boiler for drying a freshly poured radiant floor during a floor system installation.

The installer can set parameter 2.7.4 (Floor Drying Cycle) and choose the cycle‘s operation (Functional Heating, Curing Heating, a combination of Functional and Curing Heating, or Manual Heating).

This function can follow different flow temperature profiles according to the parameter 2.7.4 values:

Value

0

1

2

3

4

5

Function mode description

OFF

60

50

40

30

20

10

0

60

50

40

30

20

10

0

0 1 2 3 4 5 6 7 8

Jours

50

Jours

60

40

50

30

40

20

30

10

20

10

0

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Jours

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Jours

60

50

40

40

30

30

20

20

10

60

60

50

10

0

0

60

50

40

30

30

20

20

10

10

0

0

60

60

50

50

40

50 40

40

30

60

30

20

50

20

10

Fonction chauffage

30

20

7 jours

7 jours

0

2 jours

ARRET

2 jours

ARRET

Durcissement chauffage

18 jours

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

10

15 16 17 18 19 20 21 22 23 24 25 26 27 28

0

Jours

0 1 2 3 4 5 6 7 8

Jours

60

50

40

30

20

10

0

Durcissement chauffage

18 jours

18 jours

Jours

Jours

1 jours

ARRET

1 jours

ARRET



7 jours

15 16 17 18 19 20 21 22 23 24 25 26 27 28

15 16 17 18 19 20 21 22 23 24 25 26 27 28

60

50

40

30

20

10

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Jours

Functional Heating:

The supply setpoint temperature is kept at 77°F for three (3) days, then increased to the target temperature (parameter 2.7.5 - default = 131°F) and kept at this temperature for four (4) days.

Curing Heating:

Supply setpoint temperature increases from 77°F to the target temperature (defined by parameter 2.7.5) by 5F/day, stays at target temperature for “x” days, and decreases from target temperature to 77°F by 5°F/day for a fixed total amount of days to 18.

Example 1:

Parameter 2.7.5 = 131°F; increasing phase from 77°F to 131°F = 6 days; stays at 131°F for 6 days; decreasing phase from 131°F to 77°F = 6 days.

Example 2:

Parameter 2.7.5 = 140°F; increasing phase from 77°F to 140°F = 7 days; stays at 140°F for 4 days; decreasing phase from 140°F to 77°F = 7 days.

Functional Heating + Curing Heating:

The two operation modes are executed consecutively with a stop period of two (2) days in between.

Curing Heating + Functional Heating:

The two operation modes are executed consecutively with a stop period of one (1) day in between.

Manual Heating:

The supply setpoint temperature is fixed at the value defined by the parameter 2.7.5 “Floor Drying Flow Setpoint Temperature”.

35


DANGER

The boiler must be vented as detailed in this section. Ensure exhaust vent and intake piping complies with these instructions regarding vent system. Inspect finished exhaust vent and intake piping thoroughly to ensure all joints are well secured, airtight, and comply with all applicable code requirements, as well as the instructions provided in this manual. Failure to properly install the vent system will result in severe personal injury or death.

A. General

DANGER

This boiler is certified as a “Category IV” appliance and requires a special venting system. The vent system will operate with a positive pressure in the pipe. Exhaust gases must be piped directly outdoors using the vent materials and rules outlined in these instructions. Do not connect vent connectors serving appliances vented by natural draft into any portion of mechanical draft systems operating under positive pressure. Follow the venting instructions carefully. Failure to do so will result in substantial property damage, severe personal injury, or death.

Exhaust and intake are to be piped separately. This boiler cannot share a common exhaust or intake with multiple appliances.

Failure to follow these instructions will result in substantial property damage, severe personal injury, or death.

1. Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code authorities, and utility companies which pertain to this type of water heating equipment.

2. Install the venting system in accordance with these instructions and with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, CAN/

CGA B149, and / or applicable provisions of local building codes.

3. This boiler must be vented with materials, components, and systems listed and approved for Category IV appliances.

NOTE: To avoid contamination often contained in indoor air, it is best to pipe all intake combustion air directly to the outdoors.

NOTE: Care must be taken to prevent condensate freezing in the exhaust vent pipe system. See local, state, provincial, and national codes for best practices to prevent condensate freezing in the exhaust vent pipe system.

WARNING

Improper seating of vent pipe gaskets can cause eventual gasket failure and exhaust gas leakage. Ensure the exhaust vent pipe is properly beveled and seated before insertion into the flue adapter.

Failure to do so could result in property damage, severe personal injury, or death.

Exhaust vent adaptors are not designed as load-bearing devices, and must not be used to support exhaust vent piping. All vent pipes must be properly connected, supported, and the exhaust vent must be pitched a minimum of 1/4” per foot back to the boiler to allow drainage of condensate. Failure to properly support vent piping and follow the information in this statement could result in product damage, severe personal injury, or death.

It is required to insert the provided exhaust and intake screens into the vent terminations to prevent blockage caused by debris or birds.

Failure to keep terminations clear could result in property damage, severe personal injury, or death.

36

DANGER

Due to the extreme flammability of most glues, cements, solvents, and primers used to join plastic exhaust vent and intake pipes, explosive solvent vapors must be cleared from all vent piping before start-up. Avoid using excess cement or primer, as this may pool in the vent pipes. Vent assemblies should be allowed to cure for a period of at least 8 hours before powering a connected appliance. Failure to follow these instructions will result in substantial property damage, severe personal injury, or death. It is the installers’ responsibility to understand the hazards associated with explosive solvents and take the necessary precautions to avoid these risks.

WARNING

• DO NOT insulate the first three (3) linear feet of the exhaust vent run.

• CPVC, Polypropylene, or Stainless

Steel pipe material MUST be used if the first three (3) linear feet of the exhaust vent run passes

Within First Three (3) Linear Feet of

Appliance Exhaust Vent Adapter

Enclosed

Space through an enclosed space greater than 6” in length, such as a wall.

NOTE:

Only Stainless Steel pipe material may be insulated.

• If CPVC is used to meet these requirements, the balance may be installed with approved PVC pipe.

• If Polypropylene or Stainless Steel

Exhaust

Length

Greater than

Six (6) Inches

LP-179-JJ

11/30/17 is used to meet these requirements, the balance of the vent run must be installed with the same material.

• Failure to comply with this warning could result in property damage, severe personal injury, or death.


B. Approved Materials for Exhaust Vent and Intake Pipe

Item

Pipe and Fittings Approved for Intake ONLY

Material

ABS*

Standards for Installation In:

United States Canada

ANSI/ASTM D2661 ANSI/ASTM D2661

Pipe Approved for

Intake OR Exhaust Vent

Pipe Fittings

PVC Schedule 40/80

PVC-DWV Schedule 40/80

CPVC Schedule 40/80

Polypropylene

Stainless Steel AL29-4C

PVC Schedule 40

PVC Schedule 80

CPVC Schedule 40

CPVC Schedule 80

ANSI/ASTM D1785

ANSI/ASTM D2665

ANSI/ASTM F441

UL-1738 or ULC-S636

PVC, CPVC, and PP Venting Must be ULC-S636 Certified.

Certified for Category IV and Direct Vent Appliance Venting

ANSI/ASTM D2466 or D2665

ANSI/ASTM D2467 or D2665

ANSI/ASTM F438

ANSI/ASTM F439

PVC, CPVC, and PP Venting Must be ULC-S636 Certified

ANSI/ASTM D2235

ANSI/ASTM D2564

ANSI/ASTM F493

ASTM F656

ANSI/ASTM D2235

IPEX System 636 Cements and

Primers

Pipe Cement

ABS*

PVC

CPVC

Pipe Primer

PVC / CPVC

Table 11 - Approved Materials for Exhaust Vent and Intake Pipe

DANGER

• The exhaust and intake components installed with this appliance must be used for near appliance piping BEFORE transitioning to the approved materials listed above. DO NOT REMOVE these installed components. Doing so WILL VOID appliance warranty.

• PVC / CPVC pipe and fittings of the same diameter are considered interchangeable.

• The use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel

®

(polyphenolsulfone) in exhaust venting systems is prohibited.

• Covering non-metallic vent pipe and fittings with thermal insulation is prohibited.

• The boiler’s vent and air intake connections are designed to accept 2” PVC/CPVC and Polypropylene directly. DO NOT insert

PVC piping into the boiler’s exhaust connection. When venting with PVC, insert the factory supplied 5.5” length of CPVC before transitioning to PVC.

• When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the boiler vent connection, and at the termination when using a PVC termination kit. DO NOT mix AL29-4C piping from different manufacturers unless using adapters specifically designed for the purpose by the manufacturer.

• DO NOT mix components from different venting systems without proper adapters. The vent system could fail, causing leakage of flue products into the living space. Use only the approved pipe and fitting materials, and primer and cement specifically designed for the material used, as listed in the above table.

• A double wall vent or insulated material may be used when using stainless steel vent material in a freezing climate.

• *ABS may be used for air intake applications ONLY.

• Contact the venting material manufacturer if there is any question about the applicability of the proposed venting material.

Failure to follow these directions will result in substantial property damage, severe personal injury, or death.

CAUTION

High heat sources (generating heat 100oF / 37oC or greater, such as boiler flue pipes, space heaters, etc.) may damage plastic components of the boiler as well as plastic vent pipe materials. Such damages ARE NOT covered by warranty. It is recommended to keep a minimum clearance of 8” from high heat sources. Observe heat source manufacturer instructions, as well as local, state, provincial, and national codes, laws, regulations, and ordinances when installing this boiler and related components near high heat sources.

NOTE: The use of double-wall vent or insulated material for the combustion air intake pipe is recommended in cold climates to prevent the condensation of airborne moisture in the incoming combustion air.

DANGER

You must not use “B” vent in an exhaust application. “B” vent is for intake applications ONLY. Using “B” vent in an exhaust application will result in serious injury or death.

C. Additional Requirements for Installation in Canada

1. Installations must be made with a vent pipe system certified to

ULC-S636.

2. The first three (3) feet of vent pipe from the boiler flue outlet must be readily accessible for visual inspection.

3. The components of the certified vent system must not be interchanged with other vent systems or unlisted pipe / fittings.

37


D. Exhaust Vent and Intake Pipe Location

INSIDE CORNER

DETAIL

G

E

A

H

B

B

E

OPERABLE

FIXED

CLOSED

E

C

FIXED

CLOSED

OPERABLE

E

E

D

I

E

F

M B

E

A

K

I

K

E

I

J

E

E

B

I

B

L

Area Where Intake Terminal Is Not Permitted

LP-179-CC

03/28/17

E

Exhaust Vent Terminal

I

Intake Pipe Terminal

Figure 28 - Exit Terminals for Direct Vent Systems - ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada

A

B

DESCRIPTION

Clearance above grade, veranda, porch, deck, or balcony

Clearance to window or door that may be opened

Direct Vent

Power Vent

US

1 foot (30 cm)

1 foot

4 ft below or to side of opening; 1 ft above opening

*

CANADA

3 feet (91 cm)

C

Clearance to permanently closed window

D

Vertical clearance to ventilated soffit located above the terminal within a horizontal distance 2 feet (61 cm) from the center line of the terminal

E

Clearance to unventilated soffit

F

Clearance to outside corner

G

Clearance to inside corner

H

Clearance to each side of center line extended above meter / regulator assembly

*

*

*

*

*

I

Clearance to service regulator vent outlet *

Above a regulator within 3 feet (91 cm) horizontally of the vertical center line of the regulator vent outlet to a maximum vertical distance of 15 ft (4.5 m)

J

K

Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance

Clearance to mechanical air supply inlet

Direct Vent

Power Vent

L

Clearance above paved sidewalk or paved driveway located on public property

Direct Vent

Power Vent

M

Clearance under veranda, porch deck, or balcony

1 foot

4 ft below or to side of opening; 1 ft above opening

3 feet above if within 10 feet horizontally

*

7 feet (2.13 m)

*

3 feet (91 cm)

6 feet (1.83 m)

7 feet (2.13 m)

1 foot (30 cm)

Table 12 - Vent Termination Clearances - *NOTE: For clearances not specified in ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada, please use clearances in accordance with local installation codes and the requirements of the gas supplier.

WARNING

For each floor containing bedroom(s), a carbon monoxide detector and alarm shall be placed in the living area outside the bedrooms, as well as in the room that houses the heater. Detectors and alarms shall comply with NFPA 720 (latest edition). Failure to comply with these requirements could result in product damage, severe personal injury, or death.

38

WARNING

The building owner is responsible for keeping the exhaust and intake terminations free of snow, ice, or other potential blockages, as well as scheduling routing maintenance. Failure to keep the vent piping terminations clear and properly maintain the heater could result in property damage, severe personal injury, or death.

E. Exhaust Vent and Intake Pipe Sizing

1. The factory ready exhaust vent and intake air pipe diameter is 2”.

The vent diameter can be increased to 3” by installing a reducing coupling in a vertical length of pipe.

2. The total length of the intake air pipe run must not exceed one

hundred (100) feet in 2” pipe, or one hundred fifty (150) feet in

3” pipe.

NOTE: There is no minimum length for the intake air pipe run.

3. The total length of the exhaust vent pipe run must not be less

than six (6) feet.

4. The total length of the exhaust vent pipe run must not exceed

one hundred (100) feet in 2” pipe, or one hundred fifty (150)

feet in 3” pipe.

Minimum - Maximum Vent Run Lengths

Diameter

Intake Air Pipe Run

Exhaust Vent Run

2”

0 - 100 feet

6 - 100 feet

3”

0 - 150 feet

6 - 150 feet

Table 13 - Minimum - Maximum Vent Runs

5. The equivalent length of elbows, tees, and other fittings are listed in the Friction Loss Table below.

Friction Loss Equivalent in Piping and Fittings

Fittings or Piping

Equivalent Feet

2” or 3”

90 Degree Elbow*

45 Degree Elbow

Coupling

One Foot of Straight Pipe

5’

3’

0’

Concentric Kit

1’

3’

Table 14 - *Friction loss for long radius elbow is 1 foot less. NOTE: Consult

Polypropylene venting instructions for friction loss and pressure drop equivalents.

Vent Sizing Example

If the exhaust vent run has two 90 o

elbows, 10 feet of straight pipe and a concentric kit we will calculate:

Exhaust Vent Equivalent Length = (2x5) + 10 + 3 = 23 feet - Well below the maximum of 100 ft in 2” pipe, or 150 ft in 3” pipe.

If the intake air pipe run has one 90 o

elbow, two 45 o

elbows, and 14 feet of straight pipe:

Intake Air Pipe Equivalent Length = 5 + (2x3) + 14 = 25 feet - Well below the maximum of 100 ft in 2” pipe, or 150 ft in 3” pipe.

NOTE: The intake air pipe and exhaust vent do not have to be of equal length. There is no balancing requirement between intake and exhaust.

WARNING

Failure to install the boiler within the minimum and maximum vent length requirements could result in improper product operation and property damage, serious personal injury, or death.


When preparing pipe for installation:

• Ensure cuts are square.

• Bevel cut edges by 1/16” - 1/8”. Deburr the pipe.

• Lubricate the gasket.

1. Push the length of pipe into the connection until it touches the bottom of the fitting.

2. Tighten the clamps using a screwdriver.

3. Ensure the pipe is secure before continuing installation.

4. For 3” installations, install the reducing coupling in a vertical section of pipe.

WARNING

When venting with PVC, first install the included 5.5” length of 2” CPVC into the boiler’s exhaust connection, then adapt to PVC using approved

CPVC to PVC transition cement. Installing PVC pipe into the boiler’s exhaust connection is strictly prohibited - the strain of the gear clamp combined with heat can deform PVC over time and result in flue gas leakage causing property damage, severe personal injury, or death.

Figure 29 - Correct Installation into the Appliance Collar

NOTE: INCREASING VENT SIZE: TRANSITIONING FROM 2” TO 3” VENT

PIPE MUST ALWAYS TAKE PLACE IN A VERTICAL POSITION TO PREVENT

CONDENSATE BLOCKAGE. See Figure 30.

Figure 30 - Transitioning from 2” to 3” Vent Pipe

Follow the steps below to install air intake pipe into the boiler air intake connection. See Figure 31 for additional details.

NOTE: Clean and dry the boiler connection.

DO NOT use primer or cement on the boiler connection.

Select an air intake connection (left or right of the exhaust vent collar).

See Figure 31.

1. Using a utility knife, cut out the plastic covering the air intake connection from the side chosen. NOTE: DO NOT CUT OUT BOTH

SIDES! See Figure 31.

F. Tightening Boiler Collar to Exhaust Vent and Intake Pipe

This boiler uses 2” or 3” diameter pipe for exhaust vent and intake pipe.

In order to use 3” pipe, it is required to increase pipe size in a vertical length of pipe with a 3” x 2” reducing coupling (not included).

Follow the steps to install exhaust vent pipe into the boiler vent collar. See Figure 29 for additional details.

NOTE: Clean and dry the boiler connection.

DO NOT use primer or cement on the boiler connection.

Figure 31 - Cut Out Plastic Covering the Air Intake Connection

39


2. If using the right side connection, remove the gear clamp from the left side connection and install it on the right side. See Figure 32.

WARNING

You must cut out the plastic on the air intake connection being used before installing the air intake pipe. Failure to do so will result in improper boiler operation, property damage, severe personal injury, or death.

Figure 32 - Remove the Clamp

3. Insert the air intake pipe until it touches the bottom of the fitting.

4. Tighten the gear clamp using a screwdriver. See Figure 32.

Figure 33 - Air Intake Pipe Installed (Left Side Installation Demonstrated)

40

G. Exhaust Vent and Intake Pipe Installation

WARNING

All joints of positive pressure vent systems must be sealed completely to prevent leakage of flue products into the living space. Failure to do so could result in property damage, serious injury, or death.

1. Use only solid PVC, CPVC, or stainless steel pipe or a Polypropylene vent system approved for use with Category IV appliances.

ABS pipe material may be used on air inlet piping only.

2. Remove all burrs and debris from joints and fittings.

3. When using PVC or CPVC pipe, all joints must be properly cleaned, primed, and cemented. Use only cement and primer approved for use with the pipe material. Cement must conform to ASTM D2564 for PVC and ASTM F493 for CPVC pipe. NOTE: DO NOT CEMENT

POLYPROPYLENE PIPE.

4. Ensure the vent is located where it will not be exposed to prevailing winds.

5. In all roof venting applications, exhaust discharge must point away from the pitch of the roof.

6. If the exhaust vent is to be terminated in a walled off area (such as a roof with a parapet wall), ensure the exhaust vent terminates a minimum of 10’ from nearest wall and extends level with or above the top of the wall. This will ensure flue gas does does not get trapped and possibly recirculated into the intake air pipe, which could contaminate the combustion air.

7. To prevent water leakage, install adequate roof flashing where the pipe enters the roof.

8. Do not locate vent over public walkways, driveways, or parking lots. Condensate could drip and freeze, resulting in a slip hazard or damage to vehicles and machinery.

9. Due to potential moisture build-up, sidewall venting may not be the preferred venting option. To save time and cost, carefully consider venting installation and location.

10. Horizontal lengths of exhaust vent must slope back towards the boiler not less than ¼” per foot to allow condensate to drain from the vent pipe.

11. The exhaust vent must terminate where vapors cannot make accidental contact with people or pets, or damage shrubs or plants.

12. In vacant chimney applications, install and seal a rain cap over existing chimney openings.

13. All piping must be fully supported. Use pipe hangers at a minimum of 4 foot intervals to prevent sagging of the pipe where condensate may form.

14. Do not use the boiler to support any piping.

15. Ensure the outdoor exhaust vent and intake pipe terminations are screened to prevent blockage caused by debris or birds. Vent screens are included with this boiler.

instructions reference snow levels in establishing a minimum height for the installation of exhaust vent or air intake terminations.

Snow levels shall be determined as follows: a. The installation location may, by ordinance, designate how snow levels are calculated in that location; or b. In the absence of specific ordinances, snow levels shall be calculated from the average monthly maximum depth of snow accumulation as indicated by the National Weather Service’s 10 year statistics for the installation location/geographical area.

In addition:

• Total length of vent piping shall not exceed the limits specified in this manual.

• The vent piping for this direct vented appliance is approved for zero clearance to combustible construction.

• The flue products coming from the exhaust vent will create a large plume when the heater is in operation. Avoid venting in areas that will affect neighboring buildings or be considered objectionable.

• DO NOT locate exhaust vent or intake pipe in a parking area where machinery may damage the pipe.

• DO NOT vent near soffit vents, crawl space vents, or other areas where condensate or vapor could create a nuisance or hazard or cause property damage.

• DO NOT vent where condensate vapor could cause damage or could be detrimental to the operation of regulators, relief valve, or other equipment.

In the Commonwealth of Massachusetts and as Required by State and Local Codes:

• The vented gas fueled appliance shall not be installed so its combustion, ventilation, or dilution air is obtained from a bedroom or bathroom.

• Signage: Whenever any through-the-wall (horizontal or sidewall) vent is installed less than seven feet above the finished grade, a metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight feet above grade directly in line with the exhaust vent terminal. The sign shall read, in print no less than 0.5 inches in size, “GAS VENT

DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.


• Marking of Exhaust Vent and Intake Pipe: Piping used for ventilation, make-up, or combustion air intake shall be labeled as follows:

a. Throughout the entire developed length:

i. Labels must be placed every ten feet for exposed/visible piping; or

ii. Labels must be placed every three feet for concealed piping.

b. At all changes of direction;

c. On each side of a penetration through a partition, wall or ceiling; and

d. The labels shall be black lettering that:

i. Indicates that the piping is used for ventilation, make-up, or combustion air intake, and

ii. The letters shall be sized equal to a minimum of the pipe inches.

The following table lists optional exhaust/intake terminations available from NTI: diameter. However, for piping with a diameter exceeding two inches, said lettering does not need to be larger than two

Description

3” PVC Concentric Termination Kit

3” PVC Low Profile Termination Kit

2” PVC Low Profile Termination Kit

Table 15 - Optional Vent Kits

Stock Code

84634

84357

85062

Description

Vent

Size

Supplier

Part Number

Figure

Vent Material

Compatibility

Vent Option Availability

Roof Wall

IPEX Low Profile

(Wall)

7

2”

3”

196984 (NTI p/n 85062)

196985 (NTI p/n 84357)

35, 39

35, 39

No Yes

IPEX Concentric

(Wall/Roof)

4, 5, 6, 7

2”

3”

196125

196116 (NTI p/n 84634)

36, 40, 45, 49

36, 40, 45, 49

PVC/CPVC

Yes Yes

196117 36, 40, 45, 49

Duravent Polypro® Concentric (Wall)

Duravent Polypro® Concentric (Roof)

2 - 3”

2 - 3”

2PPS-HK, 3PPS-HK

2PPS-VK, 3PPS-VK

37, 41

46, 50

Polypro®

Polypropylene

No

Yes

Yes

No

InnoFlue® Flush Mount (Wall)

InnoFlue® Concentric (Wall)

2 - 3” ISLPT0202, ISLPT0303

2 - 3” ICRT2439, ICTC0224

35, 39

37, 41

InnoFlue®

Polypropylene

No

No

Yes

Yes

InnoFlue® Concentric (Roof)

2 - 3” ICRT3539, ICTC0335 46, 50 Yes No

Z-DENS® Concentric (Wall)

Z-DENS® Concentric (Roof)

2 - 3”

2 - 3”

2ZDHK2, 2ZDHK3

2ZDVK2, DZDVK3

Not Shown

Not Shown

Z-DENS®

Polypropylene

No

Yes

Yes

No

NOTES:

1 Instructions included with termination kits contain detailed assembly and installation instructions.

2 Clearance requirements in this manual supersede those of the instructions included with the vent terminal.

3 Piping MUST be secured to the vent terminal during installation.

4 IPEX Concentric Terminal MUST be cemented together and to the vent pipes during installation.

5 Vent Screens provided with boiler may be used with the IPEX Concentric Vent Kits; otherwise use IPEX vent screens (2 in. vent screen p/n 196050; 3 in. vent screen p/n 196051 - each sold separately).

6 IPEX Low Profile and Concentric kits (exluding p/n 197117) are constructed out of ULC-S636 approved PVC. Check with your local authority for the acceptance of PVC as a venting material prior to use.

7 IPEX Concentric kits can be shortened to fit the requirements of the installation. See instructions included with the kit for more details.

Table 16 - Optional Vent Termination Kits

41


H. Applications

1. Direct Vent Installation of Exhaust and Intake

If installing a direct vent option, combustion air must be drawn from the outdoors directly into the boiler intake, and exhaust must terminate outside. There are three basic direct vent options detailed in this manual:

1. Side Wall Venting,

2. Roof Venting, and

3. Unbalanced Venting.

Be sure to locate the boiler such that the exhaust vent and intake pipe can be routed through the building and properly terminated.

Different vent terminals can be used to simplify and eliminate multiple penetrations in the building structure (see Optional Equipment in

Venting Section). The exhaust vent and intake pipe lengths, routing and termination methods must all comply with the methods and limits given in the Venting section of this manual.

When installing a combustion air intake from outdoors, care must be taken to utilize uncontaminated combustion air.

NOTE: To prevent combustion air contamination, see Table 6.

WARNING

All vent pipes must be glued, properly supported, and the exhaust pitched a minimum of 1/4” per foot back to the boiler to allow drainage of condensate. When placing support brackets on vent piping, the first bracket must be within 1 foot of the boiler and the balance of 4 foot intervals on the vent pipe. Venting must be readily accessible for visual inspection from the first three feet from the boiler.

Take extra precaution to adequately support the weight of vent pipes terminating through the roof. Failure to properly support roof terminated piping could result in property damage, serious injury, or death.

An unbalanced vent system can be installed ONLY when the exhaust is in the vertical position. Failure to do so could result in serious personal injury or death.

42

Sidewall Venting Options - Direct Vent Installation

Two Pipe Termination

WARNING

Exhaust must terminate a minimum of 18” above the air intake termination. See Figure 38 for more details.


Low Profile Termination

WARNING


Figure 34 - Two Pipe Sidewall Venting

Concentric Termination

WARNING

3” IPEX Low Profile Termination illustrated. See Figure 40 for more details.

Figure 35 - Low Profile Sidewall Termination (with Optional IPEX Kit)

WARNING

3” Duravent / Innoflue Concentric Termination illustrated. See Figure 41 for more details.

Figure 36 - Sidewall Concentric Termination (with Optional IPEX kit)

Figure 37 - Sidewall Concentric Terminatio

(with Optional Duravent / Innoflue Kit)

NOTE: These drawings are meant to demonstrate system venting only. The installer is responsible for all equipment and detailing required by local codes.

43

Part 5 - Venting

Sidewall Venting Options - Direct Vent Installation


4 in min.

Low Profile Termination

WARNING

Refer to documentation included with termination kit for complete installation instructions.

Gas Vent Directly

Below Keep Free of

Obstructions

Gas Vent

Directly

Below Keep

Free of

Obstructions

Figure 38 - Two Pipe Sidewall Venting Detail


WARNING


Figure 39 - Low Profile Sidewall Termination (with Optional IPEX Kit)

WARNING


Gas Vent

Directly

Below Keep

Free of

Obstructions

Gas Vent

Directly

Below Keep

Free of

Obstructions

Figure 40 - Sidewall Concentric Termination (with Optional IPEX kit)

Figure 41 - Sidewall Concentric Termination

(with Optional Duravent / InnoFlue Kit)


44

Snorkel Venting (Two Pipe Sidewall Venting Terminations Beneath an Overhang)

Part 5 - Venting

Figure 42 - Two Pipe Sidewall (Horizontal Snorkel) Venting

NOTES:

A. For every 1” of overhang, the exhaust vent must be located 1” vertical below the overhang (12” minimum). Overhang means top of building structure (roof) and not two adjacent walls (corner of building).

B. Maintain minimum separation between exhaust vent and air intake sidewall terminations, as required by local codes.

C. Maintain 12” minimum clearance above highest anticipated snow level or grade (whichever is greater).

D. The exhaust vent must extend a minimum of 12” to a maximum of

24” beyond the building.

NOTE: These drawings are meant to demonstrate system venting only.

The installer is responsible for all equipment and detailing required by local codes.

45


Roof Venting Options - Direct Vent Installation


WARNING


Unbalanced Termination (Roof Exhaust / Sidewall Intake)

WARNING

Exhaust must terminate a minimum of 12” above snow level. See Figure

48 for more details.

Figure 43 - Two Pipe Roof Venting


WARNING

3” IPEX Concentric Termination illustrated. See Figure 50 for more details.

Figure 44 - Unbalanced Venting - Roof Exhaust and Sidewall Intake

WARNING

3” Polypro / Innoflue Concentric Termination illustrated. See Figure 49 for more details.

Figure 45 - Roof Concentric Termination (with Optional IPEX kit)

Figure 46 - Roof Concentric Termination



46

Roof Venting Options - Direct Vent Installation



Unbalanced Venting - Roof Exhaust Termination

WARNING

Figure illustrates two options for exhaust termination only. Neither vent pipe illustrated is intended for combustion air intake.

4 in min.

Figure 47 - Two Pipe Roof Venting Detail


WARNING


Figure 48 - Unbalanced Venting - Roof Exhaust Termination Options

WARNING


Figure 49 - Roof Concentric Termination (with Optional IPEX kit)

Figure 50 - Roof Concentric Termination



47


2. Venting Through an Existing System

This boiler may be vented through an existing unused vent system.

The inner diameter of the existing vent system is utilized for the combustion air source. Two methods have been approved for such venting: Concentric Venting Through an Existing System and Venting as a Chase.

Vent / Air Inlet Size

2”

Minimum Existing Vent / Chase Size

3”

Table 17 - Minimum Existing Vent / Chase Sizing

4”

5”

DANGER

Do not install the boiler into a common existing vent with any other appliance. This will cause flue gas spillage or boiler malfunction, resulting in substantial property damage, serious personal injury, or death.

The upper and lower vent terminations as well as all joints in the venting system must be properly sealed to ensure that all combustion air is drawn properly and exhaust does not leak from the system. Failure to properly seal the venting system will result in property damage, serious personal injury, or death.

CAUTION

Contractors must check state and local codes before installing through an existing vent opening. State and local codes always take precedence over manufacturer’s instructions. Failure to check state and local codes before installing through an existing opening could result in property damage and add significantly to installation costs.

If an existing venting system is converted for use with this boiler, the installer must ensure that the existing venting system is clean and free from particulate contamination that could damage the boiler.

Failure to do so could result in property damage and boiler failure.

Such failure IS NOT covered under warranty.

Concentric Venting through an Existing System

1

SEAL

EXHAUST

Concentric Venting Through an Existing System

NOTE: The following instructions refer only to venting through an existing vent system, and not to venting with NTI’s optional concentric vent kits. Refer to Concentric Vent Kit installation manual (LP-166) for further information on venting with the optional concentric vent kits.

Concentric venting through an existing system must run vertically through the roof. See Table 17 for proper minimum vent sizing. Use only the approved venting materials specified in Table 11 for piping the system. All instructions listed in this Venting section apply. See

Figures 51-1 and 51-2 for venting demonstrations.

Chase Venting Through an Existing System

When venting as a chase, follow all instructions included in this

Venting section, including those in the previous Concentric Venting

Through an Existing System section. See Figure 51-3 for chase venting demonstration.

Concentric Venting through an Existing System

2

EXHAUST

SEAL

Chase Venting Through an Existing System

3

EXHAUST

24"

AIR INLET

COMBUSTION AIR

COMBUSTION

AIR

EXISTING

SEAL

EXISTING

EXISTING

VENT

AIR INTAKE w/SCREEN

SEAL

12" MIN.

AIR INTAKE

(w/SCREEN)

SEAL

SEALED CAP

SEAL

SEALED

CAP

SEAL

CAP

LP-700-B

03/27/19


48


3. Power Venting, Indoor Combustion Air in Confined or

Unconfined Space

This boiler requires fresh, uncontaminated air for safe operation and must be installed in a mechanical room where there is adequate combustion and ventilating air. NOTE: To prevent combustion air

contamination, see Table 6.

When the installation uses Indoor Combustion Air, provisions for combustion and ventilation air, in accordance with section “Air for

Combustion and Ventilation,” of the National Fuel Gas Code, ANSI

Z223.1/NFPA 54 (USA), or Clause 8.2, 8.3 or 8.4 of the Natural Gas and

Propane Installation Code, CAN/CSA B149.1 (Canada), or applicable provisions of the local building codes, must be adhered to.

Combustion air from the indoor space can be used if the space has adequate area or when air is provided through a duct or louver to supply sufficient combustion air based on the boiler input. Never

obstruct the supply of combustion air to the boiler. If the boiler is installed in areas where indoor air is contaminated (see Figure

52) it is imperative that the boiler be installed as direct vent so that all combustion air is taken directly from the outdoors into the boiler intake connection.

Unconfined space is space with volume greater than 50 cubic feet per

1,000 Btu/hour (4.8 cubic meters per kW) of the total input rating of all fuel-burning appliances installed in that space. Rooms connected directly to this space, through openings not furnished with doors, are considered part of the space.

Confined space is space with volume less than 50 cubic feet per

1,000 Btu/hour (4.8 cubic meters per kW) of the total input rating of all fuel-burning appliances installed in that space. Rooms connected directly to this space, through openings not furnished with doors, are considered part of the space.

When drawing combustion air from inside a conventionally constructed building to a confined space, such space should be provided with two permanent openings: one located 6” (15 cm) below the space ceiling, the other 6” (15cm) above the space floor. Each opening should have a free area of one square inch per 1,000 Btu/hr (22cm2/kW) of the total input of all appliances in the space, but not less than 100 square inches

(645cm2).

If the confined space is within a building of tight construction, air for combustion must be obtained from the outdoors as outlined in the

Venting section of this manual. See Figure 53.

Figure 53 - Indoor and Outdoor Combustion Air - Single Pipe

Figure 52 - Do Not Place Appliance Near Dryer

49

Part 6 - Installing the Condensate Drain

CAUTION

This condensing high efficiency boiler has a condensate removal system. Condensate is water vapor derived from combustion products, similar to that produced by an automobile when it is initially started. It is very important that the condensate line is sloped down away from the boiler and to a suitable drain.

The condensate line must remain unobstructed. If allowed to freeze in the line or obstructed in any other manner, condensate can exit from the boiler tee, resulting in potential water damage to property.

When installing a condensate pump, select one approved for use with condensing boilers and furnaces. The condensate pump should have an overflow switch to prevent property damage from spillage.

Condensate from the boiler will be slightly acidic (pH from 2 to 4.5).

Check with your local gas company to determine if combustion condensate disposal is permitted in your area. Install a neutralizing filter if required by local codes.

NOTES:

1. Due to its efficient design, the boiler produces condensate (water) as a normal by-product. This condensate is acidic, with a pH level between 2 and 4.5. This condensate must be drained away from the boiler and disposed in accordance with all local regulations.

2. Condensate line must be pitched at least ¼” per foot to properly drain. If this cannot be done, or a very long length of condensate hose is used, increase the condensate line to a minimum of 1” ID and place a tee in the line after the condensate neutralizer to properly reduce vacuum lock in the drain line.

3. Use corrosion-resistant materials to drain condensate. Use the included flexible plastic hose or ½” PVC and CPVC drain pipe complying with ASTM D1785, F441, or D2665 may be used. Cement must comply with ASTM D2564 for PVC pipe or F493 for CPVC pipe.

For Canadian applications, use CSA or ULC certified PVC or CPVC pipe, fittings, and cement.

4. A frozen condensate line could result in a blocked vent condition.

It is very important to protect the condensate line from freezing temperatures or any type of blockage. In installations that may encounter sustained freezing conditions, the use of heat tape is recommended to avoid freezing of the condensate line. It is also recommended to bush up the condensate line size to 1” and terminate condensate discharge as close to the unit as possible.

Longer condensate runs are more prone to freezing. Damages due to frozen or blocked condensate lines ARE NOT covered by warranty.

5. Support of the condensate line may be necessary to avoid blockage of the condensate flow.

6. Local building codes may require an in-line neutralizer to be installed

(not included) to treat the condensate. See Figure 54. If required by local authorities, a condensate filter of lime crystals, marble, or phosphate chips will neutralize slightly acidic condensate.

Follow all the installation instructions included with the neutralizer.

If a neutralizer is installed, periodic replacement of the limestone

(or neutralizing agent) will be required. The rate of depletion of the limestone varies with usage of the boiler. During the first year of boiler operation, check the neutralizer every few months for depletion.

7. Route the drain line to a nearby floor drain, laundry tub, or condensate pump. If the boiler condensate outlet is lower than the drain, you must use a condensate removal pump (kit p/n 554200 available from NTI).

NOTE: If a nearby laundry tub is used as a disposal for waste water from the washing machine, draining the condensate into this tub allows the soapy water discharge to neutralize the acidic condensate.

8. An error will appear on the boiler display if condensate line is blocked. The boiler will not operate with a blocked condensate line. It is extremely important to have this condition repaired by a qualified service technician.

WARNING

THE CONDENSATE TRAP MUST BE FILLED WITH WATER BEFORE THE

BOILER IS USED. The siphon is filled with water during the boiler and heating system purging procedure. See Purging Procedure in this manual for further instructions.

Ensure the siphon contains water. If the siphon does not contain water it must be filled. Open the manual air vent on the main heat exchanger until filling is complete. See Figure 54. Check the system pressure with a pressure gauge.

INSUFFICIENT WATER IN THE TRAP CAN CAUSE FLUE GAS TO BE

EXPELLED.

Failing to ensure the condensate trap is full of water could result in property damage, severe personal injury, or death.

Boiler Manual Air Vent

Figure 54 - Condensate Trap Filling

50

PIPE HANGERS MUST

BE USED TO SUPPORT

VERTICAL OR

HORIZONTAL PIPING

EXISTING

DRAIN

CONDENSATE

NEUTRALIZER

1” x 3/4”

PVC PIPE

REDUCER

HORIZONTAL LINES MUST

BE INSTALLED WITH A PITCH

OF 1/4” PER FOOT

TO OUTSIDE

SOURCE

PIPE HANGERS MUST

BE USED TO SUPPORT

VERTICAL OR

HORIZONTAL PIPING

PIPE HANGERS MUST

BE USED TO SUPPORT

VERTICAL OR

HORIZONTAL PIPING

CONDENSATE

HOSE (supplied)

CONDENSATE

HOSE (supplied)


WARNING

Install wiring and electrically ground boiler in accordance with the authority having jurisdiction or, in the absence of such an authority, follow the National Electrical Code, NFPA 70, and/or CSA C22.1 Electrical

Code-Part 1 in Canada. Failure to follow all applicable local, state, and national regulations, mandates, and building supply codes for guidelines to install the electrical power supply could result in property damage, serious personal injury, or death.

ELECTRICAL SHOCK HAZARD – To ensure safety, turn off electrical power supply at service entrance panel before making any electrical connections to avoid possible electric shock hazard. Failure to do so could result in property damage, serious personal injury, or death.

Jumping out control circuits or components WILL VOID product warranty and can result in property damage, personal injury, or death.

It is of extreme importance that this unit be properly grounded. It is very important that the building system ground is inspected by a qualified electrician prior to making this connection. Electrical power must only be turned on when the boiler is completely filled with cold water. Failure to follow these instructions could result in component or product failure, serious injury, or death.

CAUTION

Label all wires prior to disconnecting when servicing the boiler. Wiring errors can cause improper and dangerous operation. Failure to follow these instructions may result in property damage or personal injury.

A. Wiring

The boiler is equipped with a three prong power cord. The boiler is limited to a maximum of 15 amps at 120 volts in use.

CONDENSATE

NEUTRALIZER

1” x 3/4”

PVC PIPE

REDUCER

Figure 55 - Condensate Piping Suggestions

HORIZONTAL LINES MUST

BE INSTALLED WITH A PITCH

OF 1/4” PER FOOT

NOTES:

1. Condensate line must be pitched at least ¼” per foot to properly drain. If this cannot be done, or a very long length of condensate hose is used, increase the condensate line to a minimum of 1” ID and place a tee in the line after the condensate neutralizer to properly reduce vacuum lock in the drain line.

2. PVC or CPVC pipe should be the only material used for condensate line. Steel, brass, copper, and other metals will be subject to corrosion or deterioration.

3. A frozen condensate line could result in a blocked vent condition.

It is very important to protect the condensate line from freezing temperatures or any type of blockage. In installations that may encounter sustained freezing conditions, the use of heat tape is recommended to avoid freezing of the condensate line. It is also recommended to bush up the condensate line size to 1” and terminate condensate discharge as close to the unit as possible.

Longer condensate runs are more prone to freezing. Damages due to frozen or blocked condensate lines ARE NOT covered by warranty.

4. Support of the condensate line may be necessary to avoid blockage of the condensate flow.

5. To allow proper drainage on longer horizontal condensate runs, tubing size may need to increase to 1” and a second line vent may be required.

NOTE: To clean out condensate trap, see Maintenance section.

Figure 56 - Proper Grounding

1. This boiler must be properly grounded. Ensure the electrical receptacle is properly grounded. Do not remove the grounding prong from the boiler plug.

2. Do not attach the ground wire to either the gas or water piping.

3. The wiring diagrams in this manual are to be used for reference purposes only.

4. Refer to these diagrams and the wiring diagrams of any external controls used with the installation when wiring the boiler. Read, understand, and follow all wiring instructions supplied with the controls.

5. Do not disconnect the power supply when the boiler is in normal operation.

51


NOTE: For additional electrical protection, the use of a whole house surge protector is recommended. Damage caused by power surges IS

NOT covered by the warranty.

1. Removing the Power Cord (To Hard Wire the Boiler)

To remove the power cord and hard wire the boiler:

1. Shut off the power supply at the boiler and at the circuit breaker.

2. Shut off the gas at the manual shutoff.

3. Remove the boiler front cover.

4. Disconnect the three clips and open the junction box

8. Cut the cable inside the cabinet and below the plastic connector.

Remove the internal part of the cable from the junction box.

Discard the internal and external parts of the cable. Note: it may be necessary to loosen the right side panel to access the plastic cable connector.

9. Leave the plastic connection secured to ensure the cabinet remains sealed.

Figure 57 - Accessing the Junction Box

5. Unhook the power cord from the green connector CN6.

Figure 60 - Cut the power cable

10. Insert the field power cable through the hole in the side panel; use an appropriate strain relief/conduit hub to secure the cable to the side panel. Fix the wiring to the green connector at the PCB; reuse the grommet removed in step 7 to act as a strain relief at the junction box

hole Ø 7/8"

CN1

CH

PUMP

DHW

PUMP

L N

DHW PUMP

CN6

Figure 58 - Power Cord - Green Connector CN6

6. Remove the power cord and the green connector

CN1

CH

PUMP

DHW

PUMP

L N

DHW PUMP

FUSE 5AT

DHW PUMP

CN6

Figure 59 - Remove the power cord from the junction box

7. Unscrew the connector screws and remove the power cord.

Remove the grommet.

Figure 61 - Hole Position for Power Cord - Right Side of Boiler

11. Reconnect the three clips and close the Junction box.

12. Rotate and fix the control panel.

13. Reinstall the boiler front cover

14. Restore gas to the boiler.

15. Restore power to the boiler.

52


2. Connecting Power (120V) for DHW and CH Circulators

To connect power for the CH and DHW external pump on the main

PCB:




4. Disconnect the three clips and open the junction box

5. Insert the circulator power cable through the hole in the side panel; use an appropriate strain relief/conduit hub to secure the cable to the side panel.

6. Connect the cable on the connector CN5 (DHW pump) and CN4

(CH pump). See Electrical Wiring Diagram, Figure 62.

CN1

CH

PUMP

DHW

PUMP

L N

DHW PUMP

FUSE 5AT

DHW PUMP

CN6

Figure 64 - 120V Connections for DHW and CH Circulators

BUS

TT2

OD

TNK

SYS

TT1

Low Voltage Wiring Connections

Remote Control Connection

Room Thermostat 2

Outdoor Sensor

Tank Temperature Sensor (Probe / Aquastat)

System Sensor (Cascade Manager)

Room Thermostat 1

Table 18 - Low Voltage Wiring Connections

Remote Control (optional)

Outdoor

Sensor Tank temp. probe System

Sensor

OK

Room Thermostat

1 2 3 4 5 6 7


7. Verify that the new cable is correctly positioned inside the control panel.

8. Reconnect the to cover of the junction box.

9. Reinstall the boiler front cover

10. Restore gas to the boiler.

11. Restore power to the boiler.

3. Low Voltage Wiring Connections

To access the low voltage wiring connections:




4. Rotate the control panel while pulling it forwards.

5. Disconnect the two clips See Figure 63

6. Open the control panel cover to have access to the main PCB. See

Figure 64.

120V

T B

BUS

120V

TT2

120V 120V

5V IN

120V 120V

OD TNK SYS TT1

Figure 65 - Low Voltage Wiring Connections

CAUTION

DO NOT CONNECT 120V TO ANY CONTROL WIRING

CONNECTION! DOING SO WILL RESULT IN IMPROPER

OPERATION AND POSSIBLE DAMAGE TO THE BOILER. SUCH

DAMAGES ARE NOT COVERED BY PRODUCT WARRANTY!


53


4. Room Thermostat Wiring Connections

To connect a room thermostat:

1. Access the low voltage wiring connections by following the directions in Item 3, Low Voltage Wiring Connections.

2. Loosen the cable clamp using a screwdriver and insert the wires leading from the room thermostat.

3. Connect the room thermostat wires to the terminals indicated in

Table 18 and Figure 65.

4. Ensure that the wires are well connected and not subject to stress when the control panel or cabinet cover are closed.

CAUTION

NOTE:

Some newer thermostat models may draw too much power from the boiler and will require an additional power supply to operate properly. Review the instructions provided with the thermostat to determine if an additional power supply is needed. Failure to do so could result in improper boiler and/or thermostat operation.

5. Outdoor Sensor Connections

NOTE: WHEN CONNECTING THE BOILER TO EXTERNAL CONTROLS,

DO NOT RUN 120V CABLES AND CABLES FOR CONTROL CIRCUITS

(WHICH ARE LOW VOLTAGE) TOGETHER. USE SEPARATE CABLES TO

PREVENT INDUCED VOLTAGE ON THE LOW VOLTAGE CIRCUITS.

Outdoor Sensor

Connector OD on PCB

Figure 66 - Outdoor Sensor Connection

6. Aquastat (Default) and Tank Sensor (Optional) Connections

(non-Combi Models)

The boiler is designed for managing the production of domestic hot water via an indirect water heater (IWH) in one of two ways:

i. AQUASTAT (default) - with parameter 228 = 2, the tank temperature is managed through an ON/OFF aquastat installed in the tank.

When an aquastat is equipped, the target outlet boiler water temperature for DHW operation is 180oF.

ii. TANK SENSOR (optional) - with parameter 228 = 1, the boiler manages the IWH temperature directly via an NTC sensor installed in the tank and connected to the boiler (see electrical diagram).

The setting of the tank temperature is done through the “+” and “-” buttons on the left side of the display.

When a tank sensor is equipped, the target outlet boiler water temperature for DHW operation will be 36°F higher than the DHW setpoint.

54

Boiler Pump


B. Internal Wiring Details

C.H. Pump

N

PUMP

DHW

N L

N

PUMP

CH

CH PUMP

FUSE 5AT

POWER-IN

DHW PUMP

FUSE 5A

1

CN2

1

CN3

Tank sensor

1

CN22

1

CN26

Bl Bl

Br Gr

CN16

1 CN19 1 CN12 1 CN20

Outlet temp

Figure 67 - Electrical Wiring Diagram

55


56

Figure 68 - Ladder Diagram

CN1

CN2

CN3

CN8

CN4

CN7

CN9

CN26

CN20

Connector

No. of Location

POWER SUPPLY

EXTERNAL PUMP 2 / Hi-V DIVERTER VALVE

BOILER PUMP

EXTERNAL PUMP 1

FAN ON/OFF

IGNITER

GAS VALVE

POWER SUPPLY OUT

PROTECTIVE EARTH

PROTECTIVE EARTH

PROTECTIVE EARTH

NTC HEAT RETURN

NTC HEAT FLOW 1

NTC FLUE

AIR PRESSURE SWITCH

DHW FLOW SWITCH

WATER PRESSURE SWITCH

DIVERTER VALVE

5

6

3

4

1

2

1

1

2

1

6

1

4

5

2

3

7

1

5

6

3

4

1

2

Pin

1

2

3

9

10

7

8

5

6

3

4

1

2

11

12

9

10

7

8

11

Table 19 - Boiler Wiring - 1


HT Selv Description

120 VAC LIVE INPUT

120 VAC NEUTRAL INPUT

PROTECTIVE EARTH

120 VAC EXT. PUMP2 INPUT / 120VAC LINE DIV1

120 VAC NEUTRAL

120 VAC EXT. PUMP2 (NO) / 120VAC LINE DIV2

120 VAC LIVE (NO)

120 VAC NEUTRAL

120 VAC EXT. PUMP1 INPUT

120 VAC EXT. PUMP1 (NO)

120 VAC LIVE

120 VAC NEUTRAL

120 VAC LIVE (NO)

120 VAC NEUTRAL

120 VRAC + (NO)

120 VRAC - (NO)

120 VAC LINE

120 VAC NEUTRAL

HT (120V~) AC

HT (120V~) AC

HT (120~) AC

HT (120V~) AC

+5V

CH RETURN NTC SENSOR SIGNAL

+5V

CH FLOW 1 NTC SENSOR SIGNAL

NOT USED

+5V

FLUE NTC SENSOR SIGNAL

+24V

APS DETECTION SIGNAL

NOT USED

GROUND

DHW FLOW DETECTION SIGNAL

+5V

GROUND

CH WATER PRESSURE SENSOR SIGNAL

NOT USED

STEPPER DIVERTER VALVE COIL 1 START

STEPPER DIVERTER VALVE COIL 1 END

STEPPER DIVERTER VALVE COIL 2 START

STEPPER DIVERTER VALVE COIL 2 END

SELV (5V)

SELV (24V)

SELV (5V)

57


Connector

No. of Location

CN24

CN16

CN19

CN12

CN22

CN23

CN18

ROOM THERMOSTAT

NTC SYSTEM

NTC TANK

OUTDOOR SENSOR

ROOM THERMOSTAT 2

EBUS2

FAN MANAGEMENT

EXTERNAL CLIP-IN

HMI

PWM PUMP

FLAME

SERVICE TOOL SERIAL INTERFACE

2

3

5

1

3

4

1

2

3

4

1

2

3

4

1

2

4

5

6

2

3

1

1

9

10

11

12

7

8

5

6

Pin

1

2

3

4

Table 20 - Boiler Wiring - 2

Description

+24V

ROOM THERMOSTAT 1 SIGNAL

+5V

CASCADE NTC SENSOR SIGNAL

+5V

BOILER NTC SENSOR SIGNAL

+5V

OUTDOOR NTC SENSOR SIGNAL

+24V

ROOM THERMOSTAT 2 SIGNAL

EBUS2 SIGNAL

GROUND

GROUND

PWM FAN-DRIVER

HALL_EFFECT SENSOR

+24V

+24V

GROUND

CLIP-IN SERIAL TX SIGNAL

CLIP-IN SERIAL RX SIGNAL

+5V

GROUND

HMI SERIAL TX SIGNAL

HMI SERIAL RX SIGNAL

+24V

PWM PUMP SIGNAL

NOT USED

GROUND

FLAME SENSOR SIGNAL

+5V

GROUND

MODE

SERIAL TX SIGNAL TO PC

SERIAL RX SIGNAL FROM PC

+24V

SELV (24V - 5V)

SELV (24V)

HT (110Vrms) AC

SELV (24V - 5V)

HT Selv

SELV (24V)

SELV (5V)

SELV (24V)

SELV (24V)

SELV (24V)

SELV (24V - 5V)

58


WARNING

FIRE AND/OR EXPLOSION HAZARD

To avoid serious injury or death, the gas line installation and the gas line inlet pressure test must be done by a licensed professional.

WARNING

Make sure the gas line pressures are within normal limits. Pressures outside normal limits can result in poor performance and hazardous operating conditions. Failure to do so could result in property damage, personal injury, or death.

NOTICE

Do not operate the boiler on Natural Gas or LP gas with average sulfur rates greater than 30 mg/m3. Doing so could result in improper product operation and failure, and WILL VOID the boiler warranty.

Ensure the gas on which the boiler will operate is the same type specified on the rating plate (natural gas or LP gas). This boiler must be converted into propane operation. Follow Gas Conversion Manual instructions

(separate document). Failure to follow these instructions could result in property damage, personal injury, or death.

A. Gas Pipe Sizing Tables

1. Gas Pipe Sizing

This information is for reference use only. Refer to gas pipe manufacturer specifications for actual delivery capacity. The DOE standard for Natural

Gas is 1100 BTU/ft

3

. Contact the local gas supplier for actual BTU/ft

3 rating.

2. Natural Gas Pipe Sizing

The following tables list maximum capacity of pipe in cubic feet of gas per hour for gas pressures of 14” or less and a pressure drop of 0.5 inches water column, based on a 0.60 specific gravity for natural gas.

Pipe Size (in.)

10 20 30 40

Length of Pipe (Feet)

50 60 80 100 150 200

BTU’s Per Hour x

1,000

3/4

360 247 199 170 151 137 117 104 83 71

1

678 466 374 320 284 257 220 195 157 134

Schedule 40

Metallic Pipe

1 1/4

1390 957 768 657 583 528 452 400 322 275

1 1/2

2

3

2090

4020

11300

1430

2760

7780

1150

2220

6250

985

1900

5350

873

1680

4740

791

1520

4290

677

1300

3670

600

1160

3260

482

928

2610

412

794

2240

(0.60 Specific

Gravity,

0.5 WC Pressure

Drop)

4

23100 15900 12700 10900 9660 8760 7490 6640

Table 21 - Natural Gas Delivery Capacity - Refer to ANSI Z223.1 - National Fuel Gas Code, Latest Edition

3. LP (Liquid Propane) Gas Pipe Sizing

Contact gas supplier to size pipes, tanks, and 100% lockup gas pressure regulator. Adjust propane supply regulator provided by the gas supplier for 14 inches w.c. maximum pressure.

5330 4560 subject to freezing conditions. See Figure 69.

5. A manual gas shut-off valve should be installed in the gas supply line close to the boiler. See Figure 69.

6. To facilitate any future maintenance, it is also recommended that an approved gas union fitting be installed in the supply line between the shut-off valve and the ¾” NPT connection on the boiler.

B. Gas Connection Requirements

1. The gas connection fitting on the boiler when the supplied adapter is installed is ¾” NPT.

NOTE: The pipe size must not be less than ¾”.

NOTE: DO NOT USE 1/2” quick flex gas lines! Doing so will result in improper appliance operation.

2. The supply line must be sized for the maximum input of the boiler being installed. If there are additional gas appliances on the main supply line, measure the size of the supply line according to the

COMBINED total maximum BTUH draw for the appliances as if they were operating at the same time.

3. Measure the length of the gas supply line from the gas meter to the boiler. The boiler must be installed downstream of the gas meter to ensure adequate gas supply. Use the tables in this manual or refer to the gas line manufacturer’s sizing information to determine the correct supply pipe size.

4. The National Fuel Gas Code (NFPA 54) requires that a sediment trap

(drip leg) be installed in the gas line on boilers not so equipped.

The drip leg must be accessible, a minimum of 3” in length, and not

Manual Gas

Shut-off

Valve

Sediment trap

Union Adapter

Figure 69 - Gas Line with Shut-Off and Sediment Trap Detail

59


1. Use a manometer to test the gas pressure to make sure it meets the minimum standards and does not exceed the maximum standards of the boiler.

2. Leak test the gas line pipe before placing the boiler in operation.

Only use approved leak detector liquid solutions to check for leaks.

3. Do not operate the boiler until all connections have been completed and the heat exchanger is filled with water.

C. Additional Precaution for Excess Flow Valve (EFV)

If an excess flow valve (EFV) is in the gas line, check the manufacturer’s minimum and maximum flow capacity ratings. An improperly sized

EFV will not allow for a full flow of gas to the boiler and will cause the boiler to malfunction. See Figure 70.

WARNING

DO NOT REMOVE OR ATTEMPT TO MAKE AN

ADJUSTMENT TO SCREWS 2 and 4 WITHOUT A

CALIBRATED COMBUSTION ANALYZER. DOING SO

COULD RESULT IN FIRE, PROPERTY DAMAGE, SERIOUS

PERSONAL INJURY, OR DEATH.

4

2

1

Figure 70 - Excess Flow Valve (EFV)

WARNING

When performing a pressure test on the gas line pipng, be sure the boiler is disconnected or isolated if the test pressure is expected to exceed 1/2

PSI (14” WC), as damage to the gas valve could occur. Such damage could result in fire, property damage, serious personal injury, or death.

D. Checking Gas Pressure at the Boiler for Proper

Operation

NOTE: Refer to Figure 71 when checking gas pressure. Loosen the bolts before checking the gas inlet pressure.

1. The boiler and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of the system at test pressures greater than ½ psi (3.5 kPa).

2. The boiler must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than ½ psi (3.5 kPa).

The minimum and maximum inlet gas line pressures must meet the requirements shown in Table 22.

Natural Gas

Minimum Pressure

Maximum Pressure

LP Gas

Minimum Pressure

Maximum Pressure

Table 22 - Gas Pressure Requirements

3.5” WC

10.5”WC

8” WC

13”WC

NOTICE

Do not fire (operate) the boiler until all connections have been completed and the heat exchanger is filled with water. Doing so will damage the boiler and void the warranty.

60

1. Line pressure Test point

2. OFFSET Adjustment Screw

4. Throttle Adjustment Screw

Figure 71 - Gas Valve Detail

Gas Inlet

Part 9 - Controls

A. Control and Display Overview

SRA

1 2 3 4

Figure 72 - Control and Display Overview

5 6

7 8 9

Item #

1

2

3

Description

ON / OFF Button (see NOTICE below)

Domestic Hot Water Adjustment Button +/-

MENU

(short press = User Menu); (long press = Info Menu)

4

5

8

9

6

7

HISTORY Button - view last 10 errors

RESET Button (see NOTICE below)

OK – confirms menu selection

ESC – exits menu selection

Heating Temperature Adjustment Button +/-

Table 23 - Control Descriptions

Display

NOTICE

Operating Description

On / Off Button

The button lights (white) when the boiler is electrically powered.

On / Off Button

The button is not lit in the event of an error or power failure.

RESET BUTTON

The button lights (red) in the event of a lockout error.

After pressing the Reset button to clear an error condition, the button will flash for five (5) seconds.

COMFORT

ON OFF

MENU PAR CODE

0

AUTO

Display Icon Description

Digits Indicating:

• Boiler Status

• Temperature indication ( level o

F) with bar

• Error Codes (ERROR)

• Press Reset Button Request (RESET)

(boiler lockout)

• Menu Settings

Technical assistance request

AUTO

Flame detected with indication of power level

CH Heating Operation Set

CH Heating Operation Active

DHW Operation Set

DHW Operation Active

Hot Water Comfort Activated (Combi Only)

Boiler off with Antifreeze Function Active

Antifreeze Function Active

Automatic Temperature Control activated

High Efficiency Operation

(Low CH flow temperature)

Solar inlet temperature probe connected -

Optional

Error signal - Display will also show a code and description

Outdoor Sensor Connected - Optional

WiFi Active

Table 24 - Display Icon Descriptions

61


B. Ignition Procedure

Press the ON/OFF button on the control panel to power on the boiler.

The display shows the current operating mode.

C. Central Heating (CH) Temperature Adjustment

It is possible to set the central heating (CH) temperature by pressing the buttons described in Figure 72, Item 8.

The CH temperature range is 68 - 122 o

F (low temperature) and 96 -

179 o

F (high temperature).

Figure 73 - Powering On the Boiler

Operating Mode

Description

Stand-by

CH request supply temperature displayed

DHW request

DHW setpoint displayed

Purging Cycle

Central Heating Post Circulation

DHW Circuit Post Circulation

Display

Figure 74 - Central Heating (CH) Temperature Adjustment

NOTE: The CH Setpoint cannot be changed by pressing the CH +/- buttons if an outdoor sensor is connected to the boiler and AUTO is active. When using an outdoor sensor, the boiler will automatically change the CH target temperature based on the Outdoor Heating

Curve

D. Domestic Hot Water (DHW) Temperature Adjustment

Not for non-COMBI using Aquastat

It is possible to set the domestic hot water (DHW) temperature by pressing the buttons described in Figure 72, Item 2.

The DHW temperature range is 97 - 140 o

F. The previously set value will flash on the display.

Figure 75 - Domestic Hot Water (DHW) Temperature Adjustment

DANGER

Hotter water increases the risk of scald injury. Scalding may occur within five (5) seconds at a setting of 140°F. Water temperature over 125°F can instantly cause severe burns or death from scalds.

Children, disabled, and elderly persons are at the highest risk of being scalded. See instruction manual before setting temperature at the appliance. Feel water before bathing or showering.

62

Approximate Time / Temperature Relationships in Scalds

120 o F

125 o F

130 o F

135 o F

140 o F

145 o F

150 o F

More than 5 minutes

1 1/2 to 2 minutes

About 30 seconds

About 10 seconds

Less than 5 seconds

Less than 3 seconds

About 1 1/2 seconds

155 o F About 1 second

Table 25 - Time and Temperature Relationship in Scalds


WARNING

An ASSE 1017 or ASSE 1070 temperature limiting or mixing valve is recommended in installations servicing disabled or elderly persons, or children. Mixing valves do not eliminate the risk of scalding.

To avoid scalding:

• Set the water heater set point temperature as low as possible.

• Feel water before bathing or showering.

• If thermostatic valves are required, use devices specifically designed for such purpose. Install these devices in accordance with instructions provided by the manufacturer.

Failure to install a temperature limiting or mixing valve and follow these instructions could result in property damage, severe personal injury, or death due to scalds.

E. User Menu

Press the MENU button to open the user menu.

To navigate within the menu or parameters, press the + and - buttons ( or ).

To change a parameter, select it by pressing the OK button.

To change the set value, press the + and - buttons ( or ).

Press the OK button to save.

To exit without savin the changes, press the

ESC button.

Figure 76 - Access user menu

For parameters 5 to 12 it is also possible to set / change the heating zone 2 (if available).

By pressing the HISTORY button after accessing the parameter, the number 1 or

2 of the selected zone appears next to the heating symbol: / .

Continue to change the setting as described above.

Activate change with OK button, + / - buttons change the value, OK button for confirmation,

ESC to return without change.

1.

NTI Wi-Fi

WIFI

AP

SN

RESET

ON/OFF Wi-Fi

Access point open for 10 minutes

Shows Wi-Fi serial number (Not Appliance)

ITEMP

2.

Date and Time

Delete Wi-Fi settings Disconnect user account

Set Internet weather (only without outdoor sensor)

The following values are displayed in a sequence. For setting, select OK and +/-.

Day (1-31)

Month (1-12)

Year (year)

Time (hh: mm) (*)

(*) Press

+/- button for setting hours

Press +/- button for setting the minutes)

Press OK to confirm the entered data.

5.

Automatic C.H. temperature control / AUTO function

OFF AUTO function deactivated

ON AUTO function Active (AUTO appears on the display)

6.

Room temperature Day / only applicable if using NTI room sensor(s)

7.

Room temperature Night / only applicable if using NTI room sensor(s)

8.

Time programs – heating schedule / only applicable if using NTI room sensor(s)

0+24 h

Always active

P1

P2

P3

06-22 h

P EXT

Family program

Program no lunch

Program with lunch

C.H. active from 06:00 to 22:00

Time program defined by REMOCON room unit or NTI NET app.

9.

Outdoor Heating Curve Slope (only with AUTO function active)

/

10. Outdoor Heating Curve Parallel Shift (only with AUTO function active)

/

Setting range + -7 at low temperature and + -14 at high temperature range (each step + or - 1.8°C)

11.

Automatic summer / winter changeover /

ON

OFF

Active

Function deactivated

12. Summer / winter changeover temperature

/

Table 2 - User menu

63


F. INFO Menu

Press the MENU button for 5 seconds to access the INFO menu, navigate within the INFO menu with + and - (both possible, or ).

Attention:

No values can be changed here, only information can be read! Changes can only be made in the user menu or in the specialist area.

Figure 77 - Access Info menu

MENU INFO

FLOOR Drying function remaining days (with Floor Drying function active)

Heating supply temperature [°F]

Heating return temperature [°F]

D.H.W. temperature [°F]

(for boilers connected to an external storage with NTC probe)

Outdoor temperature (only with external sensor connected) [°F]

Room temperature (only with NTI room sensor connected) [°F] (Zone1 / 2)

Fan speed (%)

Heating outlet setpoint temperature [°F]

Exhaust flue temperature [°F]

Boiler power level [%]

Table 3 - Info menu

PARAMETER

857

831

832

840

835

430/530

822

830

834

878

G . Date and Time

The control unit is equipped with a 365-day clock that displays the day, month, year and time.

In order to ensure correct operation of the boiler when using time programs, the date and time must be set correctly. If the boiler is connected to the Wifi application, the Internet time is automatically taken into account. Manual entry:

Day (1-31)

Months (1-12)

Year (2019)

Time (00:00)

Buttons

/

for the hour setting

(item 2 - Figure 72)

Buttons

/

for setting minutes

(item 8 - Figure 72)

64


H. Automatic CH Temperature Control (AUTO)

Automatic Temperature Control (AUTO) function allows the boiler to adapt to outdoor temperature conditions and the type of system in which it is installed.

Contact a qualified service technician to inform you about the device and program the system to suit your needs.

If a room sensor (NTI accessory) is used, the boiler switches on / off according to the current measured room temperature.

To activate the AUTO Function, set to “ON” via the User Menu, or via technical menu parameter 2.2.4.

°F

194

1.3

176

3.5 3.0

2.5

2.0 1.8

1.5

1.0

158

0.8

140

0.6

122

0.4

104

1.0

0.8

0.6

0.4

86

73

70

66

°C

77

50

73

Setpoint of the room temperature

0.2

32

77 68 59 50 41 32 23

Outdoor temperature

Figure 78 - Heating curves

14 5 -4 -13 °F

179 °F

NOTICE

To detect changes in room temperature it is necessary to install an NTI Room Sensor. Other thermostats (not

NTI) can only switch the boiler ON and OFF.

120 °F

20 °F 65 °F

Outdoor temperature

Figure 79 - Default value (HT)

Default Parameters of Automatic Temperature Control

4

4.2

Zone 1

Parameter

Zone 1 Parameter

4.2.0

Zone 1 Temperature Range

4.7.5

Automatic Slope Adaptation

179 °F

Notes

0 = Low Temperature (LT 68-113°F)

4.2.1

4.2.2

Type of Temperature Control

Outdoor Heating Curve Slope

4.2.3

Heating Curve Offset

4.2.5

Setting the Maximum Heating Temperature

Zone 1

4.2.6

Zone 1 heating MINIMUM temperature setting

0 Fixed Outlet Temperature

1 Auto. Outlet Temp Adaptation

2 Only Room Sensor

3 Only Outdoor Sensor

4 Room Sensor and Outdoor Sensor

Low Temp Range: 0.2-0.8 (0.6 LT)

High Temp Range: 0.4-3.5

from -25 to +25 (high temperature) from -12 to +12 (low temperature)

Low Temp Range: 68-122°F (120°F LT)

High Temp Range: 86-179°F

0 = OFF

1 = ON

Outdoor temperature

Outdoor temperature

80 °F

0,4 1,3 3,5

Factory Settings

Default

1 (HT)

3

1.3 (HT)

0

120 (HT)

0

Table 26 - Default Parameters for the Heating System zone 1

65

+25°F

0 °F Default

-25°F


I. Outdoor Heating Curve Slope

The Outdoor Heating Curve represents the operation of the boiler when using an outdoor sensor.

The boiler control adjusts the supply temperature according to the outdoor temperature.

The lower the outdoor temperature, the higher the boiler supply

The User may also modify the heating curve shift by pressing the CH + and – buttons.

NOTE: This is only possible when parameter

4.7.5 is set to 0 (OFF).

Upon pressing the CH + or – buttons, the display shows the current CH target temperature for 5 seconds.

The supply temperature needed to efficiently satisfy a call for heat from a thermostat depends on the heating system and building conditions

(building materials, insulation, etc.)

The slope of the Outdoor Heating Curve may be adjusted using the

“CH curves Slope” parameter from the User Menu, in order to adapt the boiler supply temperature to the installation conditions. A higher slope means that the maximum supply temperature is achieved a

65 °F

Outdoor temperature

80 °F

NOTE: The boiler supply temperature is limited upwards by the fixed high limit (4.2.5).

Access parameter 4.2.2 to modify the Outdoor Heating Curve.

After 5 seconds the display shows the amount of shift, and allows the user to modify it by further presses of the CH + or – buttons.

After few seconds the display shows the new

CH target and come back to the homescreen.

AUTO

1

179 °F 0,4 1,3 3,5

K. Room temperature Day /Night

(Only applicable when using NTI room sensor)

179 °F

120 °F

Default

The room temperatures (both zones 1/2) can be set to different setpoints. These setpoints become effective with the selected operating mode and the time program, so that different temperature levels can occur in each zone. The range of adjustable target values is limited by their interdependence, which can be seen in the accompanying graph.

Daily setpoint (comfort), factory setting 70°F

Night setpoint (reduced), factory setting 61 °F

Outdoor temperature

120 °F

Figure 80 - Outdoor Heating Curve adjustment

20 °F 65 °F 80 °F

J. Outdoor Heating Curve Parallel Shift

179 °F

If the ambient temperature is too hot or cold, regardless of the outdoor temperature, use parallel shift to adjust the curve.

Depending on system conditions (settings on the boiler during

+25°F

0 °F

120 °F

Decrease parallel shift

The boiler will automatically shift the Outdoor Heating Curve

-25°F

Default to 1 = ON (factory setting).

Figure 82 - Day and Night setpoint

4.2.3 from the technical menu.

179 °F

Increase parallel shift

Decrease parallel shift

120 °F

Outdoor temperature

Figure 81 - Outdoor Heating Curve parallel shift

+25°F

0 °F Default

-25°F

66

L. Time programs – heating schedule

(Only applicable when using NTI room sensor)

The end user can choose from five predefined time programs to heat according to his wishes. When a time program is activated, the boiler will operate in the desired time periods to maintain the room temperature at comfort temperature level. Outside these periods, the boiler operates at a reduced temperature level.

0-24h

P1

Family

Program

Mo-Su 00:00 – 24:00

Mo-Th 06:00 – 22:00

Fr-Sa 06:00 – 23:00

P2

Program without lunch

P3

Program with lunch

Su 07:00 – 22:00

Mo-Th 06:00 – 08:00 16:00 – 22:00

Fr 06:00 – 08:00 15:00 – 23:00

Sa

Su

07:00 – 23:00

08:00 – 22:00

Mo-Th 06:00 – 08:00 11:30 – 13:00 16:00 – 22:00

Fr 06:00 – 08:00 11:30 – 23:00

Sa 06:00 – 23:00

Su 07:00 – 22:00

Mo-Su 06:00 – 22:00

6-22h

EXT

Time program defined by external source (app or room unit). The details can not be displayed on the boiler display.

Time program defined by external source (app or room unit).

The details can not be displayed on the boiler display.

Table 4 - Time programs heating

NOTICE

Time programs heating are active only with NTI Room

Thermostat or Sensor

M. Automatic summer / winter changeover

When this function is activated, the boiler automatically switches from “winter” mode ( + ) to “summer” mode

( ), based on outdoor temperature conditions.

This means that the appliance can independently activate or deactivate the heating mode.

The criteria for the change are:

If the outdoor temperature is more than 1°F above the desired summer / winter switchover temperature during 5h (delay time), the boiler goes from winter to summer mode.

If the outdoor temperature is more than 1°F lower than the desired summer / winter switchover temperature during 5h

(delay time), the boiler will go from summer to winter mode.

Summer / winter changeover temperature

External temperature criterion to switch from winter operation to summer operation, factory setting is 68 °F.


67


N. Technical Menu

(Complete Programming & Troubleshooting Menus)

The boiler control can manage the entire heating and domestic hot water system. The boiler control menu enables the system and connected components to be customized for maximum comfort and efficiency. The control also provides important information relating to boiler operation and offers some “quick settings” that can be accessed without entering the access code. To see all available parameters, see

K. Complete Menu Parameters.

See J. Boiler Control Menu Structure, for an overview of the menus.

Instructions on how to access and change the menus is provided below.

The various parameters can be activated and changed using the buttons shown below:

The menu and parameter numbers are shown on the display.

CAUTION! THE MENUS RESERVED FOR QUALIFIED TECHNICIANS MAY

ONLY BE ACCESSED AFTER ENTERING THE ACCESS CODE.

To access the Menus, open the cover and proceed as follows (in this example: Parameter

2.3.1)

1.

Simultaneously press the

OK and ESC buttons for 5 seconds.

The display shows 222.

CODE

AUTO

CODE

AUTO

2. Press the “+” button to select 234, the service code.

3. Press the OK button.

The display shows

MENU.

MENU

AUTO

OK and ESC buttons together for 5 seconds to access the technical menu. CH + and – buttons to scroll through the menus and adjust settings. OK button to select parameters and save settings. ESC button to exit menu level / parameter without saving.

MENU

AUTO

4. Press the OK button.T

he display shows menu

0.

AUTO

MENU

AUTO

5. Press the “+” button to select

menu 2

.

MENU

AUTO

6. Press the OK button t o access the menu

. The display shows sub-menu 20.

Figure 83 - Access to the Techical Area

7. Press the “+” button to select the sub-menu 23.

MENU

AUTO

PAR

AUTO

9. Press

OK t o access the sub-menu

. T he display shows the parameter 231.

PAR

AUTO

10. Press OK to access the parameter.

T he display shows the current parameter value. In this example,

100

.

PAR

AUTO

11. Press the “+” or “-” buttons to select a new value.

In this example, 96.

12. Press OK to save the change, or press the

ESC button to exit without saving.

In this example press OK.

After making changes, press the ESC button until the normal display screen is restored.

68

O. Boiler Control Menu Structure

AccessCode

COMPLETE MENU

The parameters of each menu are listed on the following pages.

ERR - Fault

The display shows the last 10 errors with information on the code, description, and date.

Press “+” (2) to scrool the error

PCB

Direct Access to the Parameters:

214 - 220 -226 (not active) 228 - 229 - 230 (not active)

- 231- 232- 233 - 234 - 247 - 250 - 253 - 247 (only with parameter 228=1)

DHW - Domestic Hot Water settings


200 - 228

CH1 - Heating

Zone 1 settings


402 - 420 - 425 - 426

CH2- Heating

Zone 2 settings


223 - 502 - 520 - 525 - 526

CH3- Heating

Zone 3 settings


602 - 620 - 625 - 626

MODE - Boiler working MODE

Press “+” (2) to select:

(Only DHW)

(CH + DHW)

(Only CH)

Figure 84 - Menu Structure


0 NETWORK

0 4 User Interface

2

Boiler Parameters

2 0 General

2 1 Free Parameters

2 2 Settings

2 3 Central Heating-1

2 4 Central Heating-2

2 5 Domestic Hot Water

2 6 Boiler Manual Settings

2 7 Test & Utilities

2 8 Reset Factory Settings

4 Zone1 Parameters

4 0 Setpoint

4 1 S/W Changeover

4 2 Z1 Settings

4 3 Z1 Diagnostics

4 7 Z1 Regulation parameters


5 0 Setpoint

5 1 S/W Changeover

5 2 Z2 Settings

5 3 Z2 Diagnostics



6 0 Setpoint

6 1 S/W Changeover

6 2 Z3 Settings

6 3 Z3 Diagnostics


8 Service Parameters

8 0 Boiler Statistics -1

8 1 Boiler Statistics -2

8 2 Boiler

8 3 Boiler Temperature

8 4 Storage

8 5 Service

8 6 Error History

8 7 Free parameters

69


P. Complete Menu Parameters

Description Value

Default S

ACCESS to the complete MENU

1.

Simultaneously press the the

OK and ESC buttons for 5 seconds. T he display shows

222.

2. Press the “+” button to select 234 , the service code.

3. Press the OK button. until the display shows

MENU.

4. Press the OK button to enter the complete menu, see instructions on page 68, and complete menu list below

0 NETWORK

0 4 USER INTERFACE

0 4

0 Zone to be set by display

1 = 1 Zone

2 = 2 Zones

3 = 3 Zones from 1 to 10 minutes or 24 hours

1

10

0 4

1 Backlight timing

2 BOILER PARAMETERS

2 0 GENERAL

DHW Setpoint Temperature TRX COMBI

2 0 0

DHW Setpoint Temperature TRX non-COMBI

2 1 FREE PARAMETERS (DO NOT USE)

2 1

1 DO NOT USE

2 1

2 DO NOT USE

2 1

3 DO NOT USE

2 1

5 DO NOT USE

2 1

6 DO NOT USE

2 2 BOILER GENERAL SETTINGS

2 2

0 Ignition Power

2 2 3

Room (Floor thermostat or Room thermostat zone

2 selection)

2 2

4 Automatic CH Temperature Control

Heating ignition delay

2 2 5

2 2 8

Boiler Version - TRX C

CANNOT BE MODIFIED

Boiler Version - TRX

CANNOT BE MODIFIED ATTENTION!

Only change from 1 to 2 when external storage with an ON / OFF thermostat is connected.

from 97 to 140 (°F) from 104 to 149 (°F) from 0 to 100

0 = Floor safety thermostat

1 = Room thermostat zone 2

0 = Absent, 1 = Present

0 = Disabled,

1 = 10 seconds,

2 = 90 seconds,

3 = 210 seconds from 0 to 5

0 = Combi from 0 to 5

0 = NOT USED

1 = Storage with NTC

2 = Storage with thermostat

3 - 5 = NOT USED from 0 to 200

124 Set by pressing DHW buttons

124

Must be set in accordance with Table 29.

1

0

0

0

2 item 2 - Figure 72

RESERVED FOR TECHNICAL

ASSISTANCE

Only if the PCB is changed

2 2

9 Set boiler heating power

2 3 BOILER CH PARAMETERS - 1

2 3 1

Max CH Power

(limitation, in% of the maximum heat output,

Parameter 234)

2

2

2

3

3

3

2

3

4

Max DHW percentage

CANNOT BE MODIFIED

Min percentage

CANNOT BE MODIFIED

Max CH percentage

CANNOT BE MODIFIED

2 3

5 CH Anti-cycling time mode from 0 to 100 from 0 to 100 from 0 to 100 from 0 to 100

0 = Manual

1 = Automatic

1

See the table 29, Information on

Starting


ASSISTANCE

Only if the gas or PCB is changed see table 29.

70



Default S

2 3

6 Anti-cycling Ignition Time Delay

2 3

7 CH Post Pump Cycle Time

2 4 BOILER PARAMETER - PART 2

2

2

4

4

3 CH Fan Post-Purge

4

0 = OFF

1 = ON

0

CH Boost Delay Period Time from 0 to 60 (minutes) 16

Activated only with thermostat

This parameter allows a time delay to be set before the automatic increase of the outlet

On/Off and heating control temperature calculated in increments of 39.2°F (max 53.6°F). If this parameter retains the value activated

00, this function is not active.

(parameter 421 - 521 - 621 = 01)

2

2

4

4

7 CH Pressure Safety

9 Outdoor Temperature Reading Correction

0 = temperature sensor only

1 = pressure switch at minimum

2 = pressure sensor from -5 to +5 (°F)

1

0


ASSISTANCE

Only if the PCB is changed

Only active with outdoor sensor connected

2 5 DOMESTIC HOT WATER PARAMETER

from 0 to 7 (minutes) from 0 to 15 minutes or OC (AC)

3

3

COMFORT function

0 = deactivated

1 = timed

2 = always on

0

2 5 0

Timed

(

TRX models

with external storage with NTC sensor)

=

according to time program.

Allows hourly / weekly management for maintaining the temperature of the hot water tank. The DHW flow function remains active. Read the description in this manual.

Timed

(

TRX C models)

activated for 30 minutes after domestic hot water draw-off.

The appliance allows the hot water heating comfort to be increased via the “COMFORT” function.

This function keeps the secondary heat exchanger temperature stable when the boiler is not in use. COMFORT will be displayed when the function is active.

NOTE: This function can be activated and deactivated by pressing the COMFORT button.

2 5

1 DHW Comfort Anti-cycling Time from 0 to 120 (minutes) 0

2 5

2 DHW Start Delay 5 Anti “water hammering”

2 5

3 DHW Switch Off Logic from 5 to 200 (0.5 to 20 seconds)

0 = anti-scale (stop at > 144°F)

1 = + 7 °F /setting

0

2 5 4

DHW Post Purge and Pump Cycle

0 = OFF

1 = ON

0

OFF = 3 minutes post-circulation and post-ventilation after DHW draw-off if the boiler temperature requires it.

ON = Always on for 3 minutes post-circulation and post-ventilation after DHW draw-off.

2 5

5 DHW timer from 0 to 30 (minutes) 0

2

2

5

5

7

Anti-legionella Function

0 = OFF

1 = ON

0

TRX = Activated when the boiler is connected to a tank by an NTC sensor.

(Parameter 228 = 1)

This function prevents the formation of Legionnaire’s disease bacteria which may develop in piping and indirect water heaters

(IWH) at temperatures between 68°F and 104°F. When activated, if the IWH temperature stays below 138°F for over 100 hours, the boiler will heat the water in the IWH until it reaches 149°F for 30 minutes.

8 Antilegionella frequency from 24 to 720 (Hours) or 30 days

30 days

TRX = Activated when the boiler is connected to a tank by an NTC sensor.

(Parameter 228 = 1)

Only to test components

2 6 BOILER MANUAL SETTINGS

2 6

0 Manual mode activation

2 6

1 Boiler pump control

2 6

2 Fan control

2 6

3 3 way valve control

2 7 TEST & UTILITIES

0 = OFF, 1 = ON

0 = OFF, 1 = ON

0 = OFF, 1 = ON

0 = DHW, 1 = Heating

0

0 Set parameter 260=1



71

72



Default S

2 7

0 Test Mode

TEST+ = Max Heating power

TEST+ = Max DHW power

TEST+ = Minimum power.

TEST Mode can also be activated by pressing the Reset button for 10 seconds. The function is deactivated after 30 minutes or by pressing Reset.

See First Ignition section.

2 7

1 Air-purge cycle

2 7 4

Floor drying cycle

0 = OFF

1 = ON

0 = OFF

1 = Functional Heating

2 = Curing Heating

3 = Functional Heating + Curing

Heating

4 = Curing Heating + Functional

Heating

5 = Manual fromm 77 to 140 °F

0

131

2 7 5

Floor dry Supply setpoint temperature

2 8 RESET FACTORY SETTINGS

2 8 0

Automatically resets all parameter settings to the factory defaults.

4 ZONE 1 PARAMETERS

4 0 ZONE 1 TEMPERATURE SETTINGS

4 0

0 Temperature Day

4 0

1 Temperature Night

4 0

2 Zone 1 Fixed Temperature

4 0

3 Zone Freeze Protection Temperature

4 1 SUMMER/WINTER CHANGEOVER

4 1

0 S/W function activation

4 1

1 S/W temperature threshold

4 1

2 S/W delay time

4 2 ZONE 1 SETTINGS

Reset: OK = yes, ESC = no from 50 to 86 °F from 32 to 86 °F from 86 to 179 °F from 68 to 122 °F from 36 to 59 °F

0 = OFF, 1 = ON from 50 to 86 °F from 0 to 300 minutes

0

68

60

To reset all parameter settings, press the OK button.

66

61

179 Parameter 420 = 1


41 Changes all zones

4 2

0 Zone temperature range

4 2

1 Temperature Control Mode

0 = from 68 to 113°F

(low temperature)

1 = from 95 to 179°F

(high temperature)

0 = Fixed outlet temperature

1 = Basic On/Off

2 = Room Sensor Only

3 = Outdoor Sensor Only

4 = Room and Outdoor Sensors

1 select in the appliance type base

3



Default S

4 2 2

Outdoor Heating Curve Slope from 0.2 to 0.8

from 0.4 to 3.5

°F

194

3.5 3.0

2.5

2.0 1.8

1.5

1.3

176

158

1.0

0.8

140

122

0.6

0.4

104

1.0

0.8

0.6

86

73

70

66

°C

77

50

73

Setpoint of the room temperature

32

77 68 59

Heating Curve Offset

0.4

0.2

50 41 32 23

Outside temperature

14 5 -4 -13 °F from -12 to +12 (low temperature) from -25 to +25 (high temperature)

4 2 3

To adapt the heating curve to installation requirements, it is possible to perform a parallel shift of the curve in order to alter the calculated outlet temperature and therefore the ambient temperature.

The value is indicated on the display:

- from -12 to +12 (low temperature)

- from -25 to +25 (high temperature)

Each step represents an outlet temperature increase/decrease of 1°F in relation to the setpoint value.

For the User, it’s possible to modify the heating curve offset by pressing the CH buttons

“+” and “-” (8).

0.6

(low temperature)

1.3

(high temperature)

0

If an outdoor temperature sensor is used, the boiler calculates the most suitable heating outlet temperature, taking the outdoor temperature and type of appliance into account.

The type of curve must be chosen according to the type of appliance radiator and the heat losses present in the building.

Press the Ch buttons “+” or “-” (8), the display shows the current CH target temperature:

After 5 seconds the display allows the users to modify the offset.

The User could modify this value by pressing CH buttons “+” and “-” (8).

AUTO

1

After few seconds the display shows the new CH target and come back to the homescreen.

4

4

2

2

4

Room Sensor Impact

If setting = 0, the temperature taken from the room sensor does not affect the calculation of the setting. If setting = 20, the temperature taken has the maximum influence on the setting.

5 Zone 1 heating MAXIMUM temperature setting from 0 to 20 from 4 to 20 from 86 to 179 °F from 68 to 122 °F

2 if parameter 420 = 0




4 2

6 Zone 1 heating MINIMUM temperature setting from 86 to 179 °F from 68 to 122 °F



73

74



Default S

4 3 ZONE 1 DIAGNOSTICS

4 3

0 Room Temperature

4 3

1 Room Temperature Setpoint

4 3

4 Zone 1 Heat Call

0 = OFF

1 = ON

4 7 ZONE REGULATION PARAMETERS

4 7

5 Auto Slope Adaptation

0 = OFF

1 = ON

0



5

5

5

0

0

0

0 Temperature Day

1 Temperature Night

2 Zone 2 Fixed Temperature from 50 to 86 °F from 32 to 86 °F from 86 to 179 °F from 68 to 122 °F from 36 to 59 °F

66

61




5 0



5 1


5 1


0 = OFF, 1 = ON from 50 to 86 °F

0

68

5 1

2 S/W delay time from 0 to 300 minutes 60


5

5

5

2

2

2



2

0 = from 68 to 113°F

(low temperature)

1 = from 95 to 179°F

(high temperature)


1 = Basic On/Off



4 = Room and Outdoor Sensors from 0.2 to 0.8

from 0.4 to 3.5

1



0.6

(low temperature)

1.3

(high temperature)

See graph on the previous page.

If an outdoor sensor is used, the boiler calculates the most suitable heating outlet temperature taking the external temperature and the type of appliance into account.


from -12 to +12 (low temperature)

Heating Curve Offset from -25 to +25 (high temperature)

0

5 2 3

To adapt the heating curve to installation requirements, it is possible to perform a parallel shift of the curve in order to alter the calculated outlet temperature and therefore the ambient temperature.





See note on parameter 423.

Room Sensor Impact from 0 to 20 from 4 to 20



5 2 4

5 2


5 Zone 2 heating MAXIMUM temperature setting from 86 to 179 °F from 68 to 122 °F



5 2






Default S

5 3 ZONE 2 DIAGNOSTICS

5 3

0 Room Temperature

5 3

1 Room Temperature Setpoint

5 3

4 Zone 2 Heat Call

0 = OFF

1 = ON


5 7


0 = OFF

1 = ON

0



6

6

6

0

0

0

0 Temperature Day

1 Temperature Night

2 Zone 3 Fixed Temperature from 50 to 86 °F from 32 to 86 °F from 86 to 179 °F from 68 to 122 °F from 36 to 59 °F

66

61




6 0



6 1


6 1


0 = OFF, 1 = ON from 50 to 86 °F

1

68

6 1



6 2


0 = from 68 to 113°F

(low temperature)

1 = from 95 to 179°F

(high temperature)


6

6

2

2


2



1 = Basic On/Off



4 = Room and Outdoor Sensors from 0.2 to 0.8

from 0.4 to 3.5

1

0.6

1.3

(low temperature)

(high temperature)

See graph on the previous page.

If an outdoor sensor is used, the boiler calculates the most suitable heating outlet temperature taking the external temperature and the type of appliance into account.


6 2 3

from -12 to +12 (low temperature)

Heating Curve Offset from -25 to +25 (high temperature)

0

To adapt the heating curve to the installation requirements, it is possible to perform a parallel shift of the curve in order to alter the calculated outlet temperature and therefore the ambient temperature.





See note on parameter 423.

6

6

2

2

4

Room Sensor Impact


5 Zone 3 heating MAXIMUM temperature setting from 0 to 20 from 4 to 20 from 86 to 179 °F from 68 to 122 °F





6 2




75

76



Default S

6 3 DIAGNOSTICS

6

6

3

3



0 = OFF, 1 = ON from 50 to 86 °F

0

68

6 3



6 7


0 = OFF

1 = ON

0

8 SERVICE PARAMETERS

8 0 BOILER STATISTICS-1

8 0 0

3 way valve cycles No. (n x10)

8 0 1

Pump Power on (h x10)

8 0 2

Boiler pump cycles No. (n x10)

8 0 3

Boiler Power On Time (h x10)

8 0

4 Fan cycles No. (n x10)

8 0

5 Number of fan cycles (n x10)

8 0

6 CH flame detection No. (n x10)

8 0

7 DHW flame detection No. (n x10)

8 1 BOILER STATISTICS-2

8 1

0 CH Burner On Hours (h x10)

8 1

1 DHW Burner On Hours (h x10)

8 1

2 Number Of Flame Faults (n x10)

8 1

3 Number Of Ignition Cycles (n x10)

8 1

4 Average CH Cycle Length (min)

8 2 Boiler Current Status

8 2

1 Fan Status

8 2

2 Fan Speed (x100) RPM

8 2

4 3 Way Valve Position

0 = OFF, 1 = ON

8 2

6 APS Status

0 = DHW, 1 = Central Heating

0 = Open

1 = Closed

8 2

8 Gas Power (kW)

8 3 BOILER CURRENT TEMPERATURES

8 3

0 CH Supply Setpoint (in °F)

8 3

1 CH Supply Temperature (in °F)

8 3

2 CH Return Temperature (in °F)

8 3

4 Exhausts Flue Temperature

8 3

5 Outdoor Temperature (in °F)

8 5 SERVICE

8

8 5

1 Enable Maintenance advice

8

5

5

0

2

Months to next maintenance from 0 to 60 (months)

If set the boiler will display when it is time to call the installer for maintenance

Maintenance Warning Reset

To erase the advice for maintenance

0 = OFF, 1 = ON

Reset? OK= Yes , Esc = No

8 5

4 SW Version Interface

8 5

5 SW Version Main

8 6 Error History

12

0

8 6 0

10 last errors from ERROR 0 to ERROR 9

This parameter allows the last 10 boiler errors to be displayed, indicating the day, month and year.

When the parameter is accessed, the errors are displayed listed from ERROR 0 to ERROR 9.

8 6

1 Error list reset Reset? OK = y es, ESC = no

Only with outdoor sensor connected

8 7 FREE PARAMETERS

8 7

0 NOT USED

8 7

1 NOT USED

8 7

2 NOT USED

8 7

3 NOT USED

8 7

4 Boiler flow switch

8 7

6 Safety flame sensor

8 7

8 Boiler power level

Table 27 - Complete Parameters List


Default S

0= OFF, 1= ON

0= OFF, 1= ON from 0 to 100

(0 = minimum power

100 = maximum power)


77


WARNING

Thoroughly clean and flush any system that has used glycol before installing the boiler. Provide the customer with a material safety data sheet (MSDS) on the fluid used.

A. Check / Control Water Chemistry

CAUTION

Chemical imbalance of the water supply may affect efficiency and cause severe damage to the appliance and associated equipment. It is important that the water chemistry on both the domestic hot water and central heating sides are checked before installing the appliance. Water quality must be professionally analyzed to determine whether it is necessary to treat the water. Various solutions are available to adjust water quality. Adverse water quality will affect the reliability of the system. In addition, operating temperatures above

135oF will accelerate the build-up of lime scale and possibly shorten appliance service life. Failure of an appliance due to lime scale build-up, low pH, or other chemical imbalance IS

NOT covered by the warranty.

To ensure extended service life, it is recommended to test water quality prior to installation. Listed below are some guidelines.

CAUTION

Do not use petroleum-based cleaning or sealing compounds in the boiler system. Damage to elastomer seals and gaskets in the system could occur, resulting in substantial property damage.

The water must be potable, free of corrosive chemicals, sand, dirt, and other contaminants. It is up to the installer to ensure the water does not contain corrosive chemicals or elements that can damage the heat exchanger. Potable water is defined as drinkable water supplied from utility or well water in compliance with EPA secondary maximum contaminant levels (40 CFR Part 143.3). If the water contains contaminants higher than outlined by the EPA, water treatment is recommended and additional, more frequent maintenance may be required. See Table 1.

If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized technician or licensed professional.

Clean system to remove sediment*

1. You must thoroughly flush the system (without boiler connected) to remove sediment. The high-efficiency heat exchanger can be damaged by buildup or corrosion due to sediment.

2. For zoned systems, flush each zone separately through a purge valve. (If purge valves and isolation valves are not already installed, install them to properly clean the system.)

3. Check the return Y strainer (if installed). Remove and clean sediment and debris if necessary.

4. Flush system until water runs clean and you are sure piping is free of sediment.

*NOTE: Boiler failure due to improper water chemistry is not covered by warranty.

NOTE: Combi Models: It is recommended to clean the DHW side of the heat exchanger at least once a year to prevent lime scale buildup. Follow the maintenance procedure to clean the heat exchanger in the Maintenance Section of this manual.

78

B. Check for Gas Leaks

WARNING

Before starting the boiler, and during initial operation, smell near the floor and around the boiler for gas odorant or any unusual odor. Remove boiler front door and smell interior of boiler enclosure. Do not proceed with startup if there is any indication of a gas leak. Repair any leaks at once.

PROPANE BOILERS ONLY – The propane supplier mixes an odorant with the propane to make its presence detectable.

In some instances the odorant can fade, and the gas may no longer have an odor. Before startup (and periodically thereafter), have the propane supplier verify the correct odorant level in the gas.

If you discover any evidence of a gas leak shut down the boiler at once. Find the leak source with a bubble test and repair immediately. Do not start the appliance again until the leak is repaired. Failure to comply could result in substantial property damage, severe personal injury, or death.

C. Freeze Protection (When Used)

WARNING

NEVER use automotive or standard glycol antifreeze. Do not use ethylene glycol made for hydronic systems. Use only freeze-protection fluids certified by fluid manufacturer as suitable for use with stainless steel boilers, verified in the fluid manufacturer’s literature. Thoroughly clean and flush any system that has used glycol before installing the new boiler. Provide the boiler owner with a material safety data sheet (MSDS) on the fluid used.

NOTE: Loops Serving Indirect Water Heaters (IWHs)

Glycol used in IWH loops should be food grade propylene glycol,

FDA rated as “generally recognized as safe” (GRAS). If using a glycol / potable water mix, the water chemistry must meet the requirements in this manual. The glycol content of the liquid must not exceed 50%, unless the manufacturer specifies a different ratio. Glycol should be checked periodically to prevent it from becoming acidic. Please refer to guidelines provided by the glycol manufacturer regarding glycol maintenance.

NOTE: Glycol not recognized as GRAS may only be used in closed loop

CH applications.

1. Determine the freeze protection fluid quantity using total system water content following the fluid manufacturer’s instructions.

Remember to include expansion tank water content.

2. Local codes may require back flow preventer or actual disconnect from city water supply.

3. When using freeze protection fluid with automatic fill, install a water meter to monitor water makeup. Freeze protection fluid may leak before the water begins to leak, causing concentration to drop, reducing the freeze protection level.

4. Glycol in hydronic applications should include inhibitors that prevent the glycol from attacking metallic system components.

Make certain that the system fluid is checked for the correct glycol concentration and inhibitor level.

5. The glycol solution should be tested at least once a year or as recommended by the glycol manufacturer.

6. Anti-freeze solutions expand more than water. For example: A 50% by volume solution expands 4.8% in volume for a temperature increase from 32 - 80 o

F, while water expands 3% over the same temperature rise. Allowances must be made in system design for expansion.

7. A 30% mixture of glycol will result in a BTU output loss of 15% with a 5% increase in head against the system circulator.

8. A 50% mixture of glycol will result in a BTU output loss of 30% with a 50% increase in head against the system circulator.

NOTE: BTU losses apply to both CH and DHW.

CAUTION

It is highly recommended to carefully follow the glycol manufacturer’s recommended concentrations, expansion requirements, and maintenance recommendations (pH additive breakdown, inhibitor reduction, etc.) You must carefully calculate the additional friction loss in the system as well as the reduction in heat transfer coefficients.

D. System Water Fill, Purge, and Test

WARNING

Ensure the boiler is full of water before firing the burner.

Failure to do so will damage the boiler. Such damage IS NOT covered by warranty, and could result in property damage, severe personal injury, or death.

CAUTION

Connect the condensate discharge pipe before filling and purging the heating circuit.

It is important to purge the system of air to avoid damage to the boiler.

The boiler and heating system must be thoroughly purged of air during the initial installation or system maintenance. Proceed as follows to purge the boiler and heating system:

1. Open the manual air vent positioned on the side of the primary exchanger.

The valve is already connected to a discharge hose routed to the condensate trap.

2. Lift the cap on the automatic air release valve on the pump. Leave open permanently.

3. Gradually open the main water valve until water flows. Do not open fully.

4. Thoroughly purge each zone starting with the lowest point and close them only when clear water free of air is visible.

5. Close the manual air vent when clear water free of air is visible.

6. Continue filling the system until at least 12 psi registers on the pressure gauge.

Boiler Manual Air

Vent

Figure 85 - Manual Air Vent

Position


WARNING

Eliminate all system leaks. Continual fresh make-up water will reduce boiler life. Minerals can build up in the heat exchanger, reducing heat transfer, overheating the heat exchanger and causing heat exchanger failure.

Check if the condensate trap contains water. If not, it must be refilled. Open the manual air vent on the main exchanger until completely filled. Check the system pressure on the pressure gauge again.

E. Purge Air from DHW System

1. Make sure the CH and DHW lines are open and full of water. Turn on all electric power to boiler.

WARNING

Ensure the boiler is full of water before firing the burner.

Failure to do so will damage the boiler. Such damage IS NOT covered by warranty, and could result in property damage, severe personal injury, or death.

2. Open hot water faucets in the DHW system. Start with the faucets nearest the boiler.

3. Keep faucets open until water runs freely and all air is purged. Then move on to faucets further away from the boiler in the system.

4. When water flows freely from all hot water faucets, DHW purging is complete.

F. Check Thermostat Circuit(s)

1. Disconnect the two external wires connected to the boiler thermostat terminals TT1/TT2 (low voltage terminal strip).

2. Connect a voltmeter across these two incoming wires with power supplied to the thermostat circuits. Close each thermostat, zone valve and relay in the external circuit one at a time and check the voltmeter reading across the incoming wires.

3. There should NEVER be a voltage reading.

4. If a voltage reading does occur under any condition, check and correct the external wiring. (This is a common problem when using

3-wire zone valves.)

5. Once the external thermostat circuit wiring is checked and corrected if necessary, reconnect the external thermostat circuit wires to the boiler low voltage terminal strip. Allow the boiler to cycle.

G. Condensate Removal

1. The boiler is a high efficiency condensing appliance. Therefore, the unit has a condensate drain. Condensate fluid is nothing more than water vapor, derived from combustion products, similar to that produced by an automobile when it is initially started.

Condensation is slightly acidic (typically with a pH of 3 to 5) and must be piped with the correct materials. Never pipe the condensate using steel, copper, brass or other materials that will be subject to corrosion. Plastic PVC or CPVC pipe are the only approved materials.

A condensate neutralizer, if required by local authorities, can be made up of lime crystals, marble or phosphate chips that will neutralize the condensate. This may be done by the installer or you may purchase a condensate neutralizer from NTI (7450P-212).

2. The boiler is equipped with a barbed outlet fitting, to which the supplied hose must be installed and routed to a local drain. It is very important that the condensate line is sloped downward away from the boiler to a suitable indoor drain.

79


Figure 86 - Condensate Discharge

If the condensate outlet on the boiler is lower than the drain, you must use a condensate removal pump, available from NTI (554200).

This pump is equipped with two leads that can be connected to an alarm or another type of warning device to alert the user of a condensate overflow, which, if not corrected, could cause property damage.

3. If a long horizontal run is used, it may be necessary to create a vent in the horizontal run to prevent a vacuum lock in the condensate line.

4. Do not expose the condensate to freezing temperatures.

5. It is very important you support the condensation line to assure proper drainage.

80

WARNING

FOR YOUR OWN SAFETY READ BEFORE OPERATING

1. This boiler does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

2. BEFORE OPERATING: Smell all around the boiler area for gas.

Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

3. WHAT TO DO IF YOU SMELL GAS

• Do not try to light any boiler.

• Do not touch any electric switch, do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas suppliers’ instructions.

• If you cannot reach your gas supplier, call the fire department.

• Turn off the gas shutoff valve (located outside the boiler) so that the handle is crosswise to the gas pipe. If the handle will not turn by hand, don’t try to force or repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

4. Do not use this boiler if any part has been under water.

Immediately call a qualified service technician to inspect the boiler and to replace any part of the control system and any gas control that has been damaged.

5. The boiler shall be installed so the gas ignition system components are protected from water (dripping, spraying, rain, etc.) during boiler operation and service (circulator replacement, condensate trap, control replacement, etc.)

Failure to follow these instructions could result in property damage, serious personal injury, or death.

If you discover any evidence of a gas leak, shut down the boiler at once. Find the leak source with a bubble test and repair immediately. Do not start the boiler again until the leak is repaired. Failure to comply could result in substantial property damage, severe personal injury, or death.

A. First Ignition

1. Make sure that the gas valve is closed and the electrical connection has been properly wired. Ensure the green grounding wire is connected to a sufficient earth ground.

2. Unscrew the cap on the automatic air relief valve on the pump.

3. Ensure that the system pressure is at least 12 psi on the tridicator and no hot water or heating requests will be made.

4. Power on the boiler (press the ON/OFF button).


9. The exhaust vent piping for combustion products should be suitable and free from any obstructions.

10. Any necessary ventilation inlets in the room should be open

(power vent installation).

11. Verify the condensate trap contains water. If not, it must be filled.

If necessary, open the manual air vent on the main exchanger until completely filled.

WARNING

If the boiler has not been used for a long period of time the condensate trap may need to be refilled. Failure to do so could result in flue gases being released into the boiler room, property damage, serious personal injury, or death.

12.

Set the room thermostat to the highest setting to start the boiler and test Lockout Error 501.

consecutive failed ignition attempt.

- The combustion fan will pre-purge for a short time before activating the igniter.

- Ensure the combustion fan post-purges for at least 5 seconds before reactivating the igniter.

- After the boiler displays Error 501, set the room thermostat to the normal setting to start the boiler.

13. Open the gas valve and check the connection seals, including the boiler connection seals. Check for and eliminate any leaks.

14. Press the RESET button to clear Error 501. The display will show

OK.

15. Start the boiler by selecting CH or DHW operation.

16. Proceed with Combustion Checking Procedure.

5. The air purge function

starts automatically.

6. During the air purge cycle open the manual air vent on the primary heat exchanger. Close the air vent when clear water free of air is visible.

7. Ensure the system is completely purged of air after the purging cycle has ended. If not, repeat the procedure. Press the Auto button for 5 seconds.

8. Purge air from the CH and DHW systems. After CH system purging is complete, verify that system pressure is at least 12 psi on the pressure gauge.

NOTE: The water pressure switch safety is set at 8 psi to protect the boiler.

81


B. Combustion Checking Procedure

The order of operations for this procedure must always be respected.

Operation 1

-

Gas inlet pressure check

Loosen screw 1 (Torx 10 - Line Pressure Test

Port) and connect a manometer to the port using applicable tubing.

Ensure the boiler is powered on. Then enable Test Mode by pressing the RESET button for 10 seconds. The display will show

2

1

4

and the icon .

The gas line pressure must remain within the

Figure 87 - Gas Valve

range provided in Table 29 for the gas type during all operating conditions. Upon completion of the combustion analysis and adjustment (Operations 2 through 5), remove the pressure gauge and tighten screw 1. Verify and repair any gas leaks.

Operation 2 - Combustion Analysis

Remove the combustion test port plug as illustrated, and insert a calibrated combustion analyzer.

Figure 88 - Combustion Test Port

WARNING

Make sure the calibrated combustion analyzer is set to the appropriate gas type. Failure to do so could result in serious personal injury or death.

It is required to use a calibrated combustion analyzer to verify final adjustment according to the combustion chart (Table 27).

Failure to do so could result in serious personal injury or death.

It is very important that the combustion system be set within the recommended CO measurements listed in Table 27. Visually looking at the burner does not determine combustion quality.

Failure to measure combustion with a calibrated combustion analyzer and set the throttle within the recommended CO measurements could result in property damage, severe personal injury, or death.

Operation 3 - Adjusting the CO2 at Maximum Gas Flow Rate (High

Fan Speed)

Set the thermostat at the highest possible setting or draw off the domestic hot water at the maximum water flow rate to create a thermostatic valves present in the CH circuit.

2

Select the TEST Function by pressing and holding the RESET button for

10 seconds.

WARNING! When the Test Function is activated the temperature of the water coming out of the boiler may be more than 150°F.

1

and the icon will appear on the display when Test Function is active. The boiler will operate at maximum heating power.

Press the button to operate the boiler at the maximum power. The icon will display.

0

Wait 1 minute for the boiler to stabilize before carrying out the combustion analyses.

Read the CO2 value (%) and compare it with the values given in the table below:

Fan Speed

CO PPM

CO

2

(%)

Natural Gas

Low

<175

8.5 - 9.7

High Low

LP Gas

<175

High

9.5 - 10.5

ATTENTION: The CO

2

at minimum gas flow must not be set higher than the CO

2

reading at maximum gas flow. It may be set lower by as much as 0.3%

For Example: If CO

2

at Max. = 9.2%, CO

2

at Min. = 8.9-9.2%

Table 28 - Combustion Settings

ATTENTION!! Obtain all values with the front cover installed.

If the CO2 (%) reading differs from the values given in the table, adjust the gas valve following the instructions below. Otherwise move directly to Operation 4.

Adjusting the Gas Valve at Maximum

Gas Flow

Adjust the gas valve by turning setting screw 4 clockwise to increase the CO2 level; counterclockwise to reduce the

4

CO2 level (1 turn adjusts the CO2 level by approximately 0.3%). Wait 1 minute after each change in setting for the CO2 value to stabilize.

If the value measured corresponds to the

Figure 89 - Max CO2

Adjustment

value given in the Table 28, max adjustment is complete. Otherwise continue the setting procedure.

ATTENTION!! The Test Function will automatically deactivate after 30 minutes, or Test Function can be turned off manually by pressing the

RESET button.

4

82


Operation 4 - Checking the CO2 at Minimum Gas Flow (Low Fan

Speed)

With the Test Function active, press the button to operate the boiler at minimum

DHW power. The and icons will display.

Wait 1 minute for the boiler to stabilize before carrying out the combustion analyses.

If the CO2 (%) reading at min gas flow is greater than the

CO2 (%) reading at max flow, or if it is less than the reading at max flow by more than 0.3%, adjust the gas valve following the instructions below. Otherwise move directly to

Operation 5.

Adjusting the Gas Valve at Minimum

Gas Flow

Remove cap and adjust screw 2 by turning counter-clockwise to reduce the CO2 level; clockwise to increase the CO2 level. Wait 1 minute after each adjustment for the CO2 value to stabilize.

WARNING! Minimum Gas Flow

Adjustment is very sensitive.

2

If the value measured corresponds to the value given in Table 28 adjustment is complete. Otherwise continue the setting procedure.

Figure 90 - Min CO2

Adjustment

Attention!! If the value of the CO2 at minimum power has been changed, it is necessary repeat the adjusting at maximum gas flow.

Operation 5 - Ending Adjustment

1. Exit Test Mode by pressing RESET.

2. Turn down the thermostat and / or stop the DHW draw-off. For Only

Heating Boiler applications reset all thermostatic valves.

3. Check for and repair any leaks of gas.

4. Reinstall the front cover.

5. Reinstall the combustion test port - see Figure 88.

2

83


Inlet Gas Pressure Nominal (Inches WC)

Inlet Gas Pressure Min/Max (Inches WC)

Ignition Power

Maximum CH Power Adjustable (%)

Minimum Power (%)

Max CH Power (%)

Max DHW Power (%)

Gas Orifice (

Ø)

Gas Inlet (MBH)

Max DHW

Max CH

Min

Table 29 - Table Summarizing Powers

Parameter

220

231

233

234

232 mm

TRX085 TRX120 TRX110C TRX150C

Natural Propane Natural Propane Natural Propane Natural Propane

7 11

3.5 - 10.5

8 - 13

7

3.5 - 10.5

11

8 - 13

7

3.5 - 10.5

11

8 - 13

7

3.5 - 10.5

11

8 - 13

53

100

3

61

61

43

100

2

73

73

40

100

3

71

77

34

100

2

73

93

6.4

5.5

8.5

6.0

6.9

5.5

8.5

6.0

85

85

9,400

120

120

13,200

114

106

11,200

150

120

13,200

C. Checking Combustion Parameters

Menu 2. - Boiler Parameters

Submenu 3. - Parameter 1 Maximum Heating Power Adjustment

Submenu 2. - Parameter 0 Ignition Power

Submenu 3. - Parameter 5 Heating Ignition Delay

Maximum Heating Power Adjustment 2.3.1

The maximum heating power can be adjusted to between the maximum and minimum power allowed by the boiler.

The display shows the heating power value between 100% (“100” on the display) and 0% (“0”) of this interval.

To check the maximum heating power, access menu 2/sub menu 3/ parameter1 (231) - see page 60.

Check the value. If necessary, modify it as indicated in Table 29.

ATTENTION:

LIQUEFIED PETROLEUM (LP) PROPANE

Liquefied Petroleum (LP) propane gas is heavier than air; therefore, it is imperative that your boiler is not installed in a pit or similar location that will permit heavier than air gas to collect.

Local Codes may require appliances fueled with LP gas be provided with an alarm or an approved means of removing unburned gases from the room. Check your local codes for this requirement.

Checking Ignition Power 2.2.0

To check the Ignition power access menu 2/sub menu 2/parameter 0

(220) - see page 60.

If necessary, modify it as indicated in Table 29.

TRX

NATURAL TO PROPANE

CONVERSION INSTRUCTIONS



Heating Ignition Delay Adjustment 2.3.5

This parameter is used to manually (0) or automatically (1) set the heating ignition delay time. This is the time the boiler delays igniting the burner after it has met the central heating mode setpoint and switched off.

To change this parameter, access menu 2/sub menu 3/parameter 5

(2.3.5)- see page 60.

After selecting manual, access the successive parameter 2.3. 6 to set the delay between 0 and 7 minutes.

Automatic selection means that the boiler will establish the delay time based on the set-point temperature.

WARNING

This conversion kit shall be installed by a qualified service agency in accordance with the manufacturer’s instructions and all applicable codes and requirements of the authority having jurisdiction. If the information in these instructions is not followed exactly, a fire, an explosion or production of carbon monoxide may result causing property damage, personal injury or loss of life. The qualified service agency is responsible for the proper installation of this kit. THE INSTALLATION IS NOT

PROPER AND COMPLETE UNTIL THE OPERATION OF THE

CONVERTED APPLIANCE IS CHECKED AS SPECIFIED IN

THE MANUFACTURER’S INSTRUCTIONS SUPPLIED WITH

THE KIT, WHICH NECESSITATES THE USE OF A CALIBRATED

CO2/O2 AND CO COMBUSTION ANALYZER.

Figure 91 - Conversion Kit

Instruction Cover

D. Converting the Appliance from Natural Gas to

Propane Operation

NTI boilers are factory set to operate on Natural Gas. BEFORE

OPERATING ON PROPANE the boiler must be converted to Propane using the included conversion kit specific to the boiler model.

WARNING

These instructions CANNOT be used to convert NTI appliance models not referenced within these instructions. Contact NTI for the availability of conversion kits and instructions for other models.

84

Failure to apply these instructions properly may result in dangerous Carbon Monoxide levels, fire, or explosion, leading to property damage, serious personal injury, or death.


Yes Note Before Installing

Is there enough space to ensure proper installation?

Does installation location allow for proper service clearances?

Are water and gas lines properly sized and set at proper pressures for the installation?

Is boiler location as near the exhaust vent / intake pipe terminations as possible?

Have combustible materials been cleared from the installation location?

Is there a drain close to the boiler?

Water Piping

Does boiler loop piping meet the minimum sizing requirements listed?

NOTE: Smaller piping will cause performance problems.

Does the system have an adequate air removal / CH Air separator?

Has water chemistry been checked?

Does water chemistry meet requirements?

If water chemistry does not meet requirements, have treatment measures been put in place?

Has the system been cleaned and flushed?

Install Exhaust Vent and Intake Piping

Has the boiler been vented with the approved materials listed in this manual or to meet local codes?

Is air supply sufficient for proper boiler operation?

Is total vent piping length within the maximum vent length restriction listed in this manual?

Have venting lengths been minimized?

Are terminations properly spaced from windows, doors, and other intake vents?

Have all vent terminations been installed at least one foot above exterior grade and one foot above maximum snow accumulation level?

Is vent piping properly supported?

Has vent piping been checked for leaks?

Has the exhaust vent line been pitched back to the boiler at a rate of 1/4” per foot?

Have the exhaust vent and intake pipes been properly installed to the boiler?

Is the condensate drain supported so as to not place strain on the boiler’s condensate outlet fitting?

Install Condensate Piping / Tubing and Components

Have all condensate components included with the boiler been installed?

Is the condensate line piped with the approved materials listed in this manual?

Has the condensate line been routed to a laundry tub or other drain?

Install Gas Piping

If operating on Propane, has the appropriate LP Conversion Kit been installed and the LP Conversion

Instructions been followed?

Is the gas supply line a minimum of 3/4” in diameter?

Is the gas supply line length and diameter adequate to deliver the required BTUs?

When operating at maximum and minimum gas input rates, does the gas line pressure remain between

3.5 and 14” WC for Natural Gas, or between 8 and 13” WC for Propane?

Does the gas type match the type indicated on the boiler rating plate? If converted to Propane, has the LP

Conversion Label been affixed adjacent to the boiler’s rating plate label?

Has a union and shut-off valve been installed?

Relief Valve

Is the CH Pressure Relief Valve rated to 30 psi properly installed and the at least 3/4” discharge line run to an open drain and protected from freezing?

Is the DHW Pressure Relief Valve rated to 125 psi properly installed and the at least 3/4” discharge line run to an open drain and protected from freezing?

Yes

Yes

Yes

Yes

Yes

Note

Note

Note

Note

Note

85


Wiring

Has the power and control been wired per boiler wiring diagram, this manual?

Is the main electrical connection polarity within boiler requirements?

Does the power supply voltage agree with the boiler rating plate? 120V AC?

Start-Up, Adjust, and Test

Has the boiler been started?

If necessary, has the boiler gas valve been adjusted?

Has the installation been customized per installation location requirements?

Have all customized system parameters been tested?

Has proper boiler operation been confirmed?

Burner Flame

Has the burner flame been checked?

Have combustion values been verified with a calibrated combustion analyzer?

If the flame does not appear normal, it may need to be cleaned by a qualified service technician. See flame sight glass window location.

Final Installation Approvals

Signed by Technician

Yes

Yes

Yes

Table 30 - Installation Checklist

Note

Note

Note

Date

86

A. Boiler Protection Devices

The boiler is protected from malfunctioning by means of internal checks performed by the electronic microprocessor PCB, which stops the boiler from operating if necessary. In the event of the boiler being shut off in this manner, a code appears on the display which refers to the type of shut-off and the reason behind it.

There are two types of shut-off:

1. Blocking Error

A blocking error means the boiler will restart automatically as soon as the problem which caused the error clears or is removed; the error is indicated by the « » symbol which appears on the display followed by the error code.

For example, if the boiler indicates a 110 error code, the error will clear automatically when the CH temperature decreases. The boiler will restart and operate normally.

Figure 92 - Blocking

Error Example

NOTE: Contact a qualified service technician if the error continues to occur.

In the event of Error 108 - Shut-off due

to insufficient water pressure inside the

heating circuit - Pressure can be increased by filling the heating circuit. See filling and purging procedures, this manual.

Figure 93 - Shut-Off

Error for Low Water

Pressure

If Error 108 occurs frequently and system needs repeated refilling, turn the boiler off. Turn the external electric power to the OFF position. Shut off the main gas valve. Contact a qualified service technician to check for any leaks of water.

2. Lockout Error

A lockout error means the boiler does not return to operation after the error condition goes away. The button must be pressed on the control panel to restore boiler operation.

If the error condition occurs often contact a qualified service technician.


3. Malfunction Warning

This warning is shown by the display in the following format:

5 P1 = FIRST IGNITION ATTEMPT UNSUCCESSFUL

The first part of the error code (e.g. 1 01) indicates the affected operational assembly.

1 - Primary Circuit

2 - Domestic Hot Water Circuit

3 - Internal Electronic Part

4 - External Electronic Part

5 - Ignition and Detection

6 - Air inlet - flue gas outlet

7 - Multi-zone Heating

Figure 94 - Lockout Error Example

WARNING

Important

Contact a qualified service technician for assistance if a

Lockout Error occurs frequently. For safety reasons, the boiler will permit a maximum of five (5) resets in 15 minutes

(five [5] presses of the RESET button). A sixth (6th) attempt within this 15 minute period will lock out the boiler. The boiler will only operate again after the electrical supply has been disconnected and reconnected.

Repeated Lockout Error conditions could indicate a serious error with the boiler or installation. Failure to contact a qualified service technician to troubleshoot the error could result in substantial property damage, serious personal injury, or death.

87


B. Boiler Error Codes

Display

CH Circuit

Description Possible Remedies

1 01

1 03

Overheat

Insufficient circulation or low water pressure:

Gradient T supply> 44.6 °F / sec, three times

Press the Reset button to clear the Error Code.

If Error happens again:

1. Check for the correct functioning and positioning of the supply and return temperature probes.

2. Check for the correct functioning and positioning of the circulation pump.

3. Check the water pressure on the pressure gauge.




2. Purge the air from the central heating circuit.



1 04


Gradient T supply> 68 °F / sec. or gradient T return> 68 °F / sec.







1 05


T supply - T Return> 131 °F, three times







1 06


Gradient T flow + 50 °F, three times







1 07

1 08

Insufficient circulation or water:

T Return> T supply + 86 °F

Fill system: No water in the primary circuit

(P <Pmin).

Reset?

Reset

Reset







This Error Code will go away when the condition is remedied.


1. Ensure the system is filled with water. Ensure all valves are open to the appliance and there are no leaks.

2. Check wiring connections to low water pressure switch. Ensure all are secure.

3. Check low water pressure switch resistance. If resistance is not zero, replace the sensor.

4. If the problem persists, replace the main control.

No Reset

88

Display

1 10

1 12

Description

CH Flow temp. probe circuit open / short circuit

CH Return temp. probe circuit open / short circuit

1 14

External sensor circuit open / short circuit


Reset?


1. Check CH temperature sensor. Ensure connections are secure.

2. Check sensor resistance. If resistance is zero, replace the sensor.


No Reset

This Error Code will go away when operating temperature decreases. If

Error happens again:

1. Check return temperature sensor. Ensure connections are secure.

2. Check return sensor resistance. If resistance does not match Table 33 –

Sensor Temperature Resistance


The Error Code will go away when the condition is remedied.


1. Check outdoor sensor. Ensure all wiring connections are intact and secure. If the sensor wires were secured to the wall with staples, the wires may have been damaged.

2. Check outdoor sensor resistance. If resistance does not match Table 33

– Sensor Temperature Resistance

3. If the problem persists, replace the outdoor sensor.

NOTE: When this error occurs, the appliance will still operate at the max setting of the Outdoor Heating Curve.

No Reset

No Reset

1 16

Floor Thermostat contact open

1. If parameter 223 is set to 1 and floor safety thermostat is not present, set the parameter 223 to 0 or connect a floor safety thermostat.

2. If parameter 223 is set to 1 and floor safety thermostat is present reduce the CH set-point.

No Reset

1 P1

Insufficient circulation or missing water: Gradient T supply> 44.6 °F / sec

1 P2

Insufficient circulation or missing water: T supply - T return> 131 °F

1 P3

Inadequate circulation or missing water: Gradient T supply + 50 °F

DHW Circuit

2 03

Storage temp. probe circuit open / short circuit

2 05

DHW In Probe Open Circuit (Solar temp. probe)

2 09

Storage overheating

(> 176 °F = on; <175 °F; off)

Check storage sensor and wiring. Replace if damaged.

1 P2

Anti - Legionella function not completely finished

Internal PCB’s

3 01

3 02

3 03

3 04

Display error Eeprom

Communication error GP - GIU

PCB internal error

Too many (> 5) resets in 15 minutes

(1) Turn Off the Power to the Boiler

Switch OFF and ON the boiler at the main electrical power supply. If the problem happens again replace the main PCB.

Switch OFF and ON the boiler at the main electrical power supply. If the problem happens again:

1. Check the connection between the main PCB and the HMI

2. Replace the main PCB.


Switch OFF and ON the boiler at the main electrical power supply.

3 05

3 06

3 07

3 09

3 P9

PCB internal error

PCB internal error

PCB internal error

Gas relay check failed

Sched. Maintenance-Call for Service





Reset the error with the parameter 852

Warning

Warning

Warning

No Reset

No Reset

No Reset

Warning

Reset?

No Reset

No Reset

No Reset

No Reset(1)

Reset

Reset

Reset

Reset

89


Display

5 04

5 P1

5 P2

Detection of 10 flame lifts in one operating cycle

Description

1st Ignition Failed

2nd Ignition Failed

Possible Remedies

External P.C.B.’s

4 11

Room sensor circuit open or short circuit Zone 1

4 12


4 13


Ignition and Detection

5 01

5 02

No flame detected (3 times)

Flame detected with gas valve closed

Press the Power button to clear the Error Code.


1. Monitor the gas pressure to the appliance while in operation. Ensure pressure is between 3.5 and 10.5” WC (Natural Gas), or between 8 and

13” WC for boilers converted to Propane (LP) operation.

2. Check gas valve wire. Ensure connection is secure.

3. Check flame detection sensor. Ensure connections are secure. Normal operating settings are more than 2.5DC before ignition; less than 2.5DC after ignition.

4. Check igniter transformer for proper connection.

5. Clean the spark igniter with steel wool to remove oxides. Ensure proper separation (3-4 mm).

6. Replace the spark igniter if damaged.

7. Assure that the flame is stable when lit.



1. If Error happens again disconnect the flame detection electrode.

Then press Reset.

2. If the error does not happen again replace the flame detection

electrode.

3. If the error happens again replace the main PCB.



1. Monitor the gas pressure to the appliance while in operation. Ensure pressure is between 3.5 and 10.5” WC.


3. Check flame detection sensor. Ensure connections are secure. Normal operating settings are more than 2.5DC before ignition, less than 2.5DC after ignition.

4. Check vent terminations. Ensure there are no blockages.

5. Ensure that the flame is stable when lit.


1. Monitor the gas pressure to the appliance while in operation. Ensure pressure is between 3.5 and 10.5” WC (Natural Gas), or between 8 and 13” WC for boilers converted to Propane (LP) operation.


3. Check flame detection sensor. Ensure connections are secure.

Normal operating settings are more than 2.5DC before ignition;

less than 2.5DC after ignition.


5. Clean the spark igniter with steel wool to remove oxides. Ensure

proper separation (2/16”-3/16”).




1. Monitor the gas pressure to the appliance while in operation. Ensure pressure is between 3.5 and 10.5” WC (Natural Gas), or between 8 and 13” WC for boilers converted to Propane (LP) operation.











Reset?

No Reset

No Reset

No Reset

Reset

No Reset

Reset

Warning

Warning

90


Display

5 P3

5 P6

Description

Detection of 9 Flame cut-off

3rd and 4th Ignition Failed

Possible Remedies

1. Monitor the gas pressure to the appliance while in operation.

Ensure pressure is between 3.5 and 10.5” WC.



Normal operating settings are more than 2.5DC before ignition,


4. Check vent terminations. Ensure there are no blockages.



1. Monitor the gas pressure to the appliance while in operation. Ensure pressure is between 3.5 and 10.5” WC (Natural Gas), or between 8 and

13” WC for boilers converted to Propane (LP) operation.











Air Intake / Exhaust Gas Outlet

6 02

6 03

6 12

Exhaust NTC detects Vent Temperature is greater than 204°F (96°C)



1. Check exhaust temperature sensor. Ensure connections are secure.

2. Check sensor resistance. If resistance is zero, replace the sensor.

3. Check exhaust vent for blockage.

4. If the problem persists, replace the control.

5. If the problem persists, replace the heat exchanger.

Exhaust NTC circuit open or short circuit


1. Check APS and main controller connections. Ensure all are secure.

2. Check APS resistance. If resistance is not zero, replace the switch.

3. Check APS hose. Ensure it is connected and in good condition.

4. Check condensate line and termination for blockages.

5. Check exhaust vent for blockages.


APS Open

Insufficient fan speed

(<500 for 3 seconds or RPM min -300 for 3 minutes)


1. Check APS and main controller connections. Ensure all are secure.

2. Check APS resistance. If resistance is not zero, replace the switch.

3. Check APS hose. Ensure it is connected and in good condition.

4. Check condensate line and termination for blockages.

5. Check exhaust vent for blockages.




1. Check the connections to the fan. Ensure all are secure.

2. If the fan does not rotate during the ignition sequence, check for 8Vac

26.5VDC power at the fan connection.

If 8Vac 26.5VDC power is present at the control, replace the fan. If the blower does not have 8Vac 26.5VDC power, check power at the control.

If 8Vac 26.5VDC power is not present at the control, replace the control.


Reset?

Warning

Reset

No Reset

No Reset

Reset

Table 31 - Boiler Error Codes

Important

Contact a qualified service technician for assistance if a Lockout Error occurs frequently. For safety reasons, the boiler will permit a maximum of five (5) resets in 15 minutes (five [5] presses of the RESET button). A sixth (6th) attempt within this 15 minute period will lock out the boiler permanently. The boiler will only operate again after the electrical supply has been disconnected and reconnected.

Repeated Lockout Error conditions could indicate a serious error with the boiler or installation. Failure to contact a qualified service technician to troubleshoot the error could result in substantial property damage, serious personal injury, or death.

91


DANGER

The boiler must be inspected and serviced annually, preferably at the start of the heating season, by a qualified service technician. In addition, the maintenance and care of the boiler as outlined in this manual must be performed by the user/owner to assure maximum efficiency and reliability.

Follow the maintenance procedures given throughout this manual. Failure to perform the service and maintenance or follow the directions in this manual could damage the boiler or system components, resulting in substantial property damage, severe personal injury, or death.

A. Procedures

Periodic maintenance should be performed once a year by a qualified service technician to ensure that all the equipment is operating safely and efficiently. The owner should make necessary arrangements with a qualified heating contractor for periodic maintenance of the boiler.

The installer must also inform the owner that a lack of proper care and maintenance of the boiler may result in a hazardous condition.

B. Maintenance That May be Performed by the User

Check the Surrounding Area

DANGER

To prevent the potential of substantial property damage, severe personal injury, or death, eliminate all the materials listed in

Table 6 from the area surrounding the boiler and the vicinity of the combustion air intake. If contaminants are found:

• Remove products immediately from area.

• If contaminants have been there for an extended period, call a qualified service technician to inspect the boiler for possible damage from acid corrosion.

If products cannot be removed, immediately call a qualified service technician to re-pipe the combustion air intake piping away from the contaminated areas.

Ensure the Cabinet is Closed When the Boiler is Operating

The boiler cabinet must be closed when the boiler is operating.

Combustible/Flammable Materials

Do not store combustible materials, gasoline, or other flammable vapors or liquids near the boiler. If found, remove these materials immediately.

Air Contaminants

If allowed to contaminate combustion air, products containing chlorine or fluorine will produce acidic condensate that will cause significant damage to the boiler. Read the list of potential contaminants and areas likely to have these contaminants in Table 6. If any of these contaminants are in the room where the boiler is located, or combustion air is taken from one of the areas listed, the contaminants must be removed immediately or the intake pipe must be relocated to another area.

Check the Power Source

Make sure the power cord and the main power line are properly connected to the manual switch box inside the boiler.

Check the Status of the Control Panel

Observe the Control Panel to ensure the boiler is powered on and to check for any error codes. Clear any debris from the panel.

Check CH Pressure Gauge

Ensure the pressure reading on the CH gauge does not exceed 30 psig.

Higher pressure readings may indicate a problem with the expansion tank. Immediately contact a qualified service technician to inspect the boiler and system.

Check Exhaust Vent and Intake Pipe Terminations

Verify that the boiler exhaust vent and intake pipe terminations are clean and free of obstructions. Remove any debris from the exhaust vent or intake pipe openings. If removing the debris does not allow the boiler to operate correctly, contact your qualified service technician to inspect the boiler and the vent system.

Check Exhaust Vent and Intake Piping

Visually inspect the exhaust vent for any signs of blockage, leakage, or deterioration of the piping. Inspect the exhaust vent bracing. Ensure bracing is undamaged and in good condition. Notify a qualified service technician immediately if any problems are found.

WARNING

Failure to inspect the venting system and have it repaired by a qualified service technician can result in vent system failure, causing severe personal injury or death.

Check Pressure Relief Valve

1. Visually inspect the primary pressure relief valve and discharge pipe for signs of weeping or leakage.

2. If the pressure relief valve often weeps, the expansion tank may not be operating properly. Immediately contact a qualified service technician to inspect the boiler and system.

Operate Pressure Relief Valve

1. Before proceeding, verify that the relief valve outlet has been piped to a safe place of discharge, avoiding any possibility of scalding from hot water.

2. Shut power off to the boiler. To avoid scalding, wait for boiler to cool before operating the relief valve.

WARNING

To avoid water damage or scalding due to relief valve operation, a discharge line must be connected to the valve outlet and directed to a safe place of disposal. This discharge line must be installed by a qualified service technician in accordance with the boiler installation manual.

The discharge line must be terminated so as to eliminate possibility of severe burns or property damage should the valve discharge.

3. Lift the relief valve lever. If water flows freely, release the lever and allow the valve to seat. Watch the end of the relief valve discharge pipe to ensure that the valve does not weep after the line has had time to drain. If the valve weeps, lift the lever again to attempt to clean the valve seat. If the valve does not properly seat and continues to weep, contact a qualified service technician to inspect the valve and system.

4. If water does not flow from the valve when you completely lift the lever, the valve or discharge line may be blocked. Immediately shut the boiler down per instructions on page 2 and call a qualified service technician to inspect the valve and system.

5. If relief valve seats properly, restore power to the boiler. Observe operation for five minutes and ensure it operates properly.

Check the Condensate Drain System

1. While the boiler is running, check the discharge end of the condensate drain tubing. Ensure no flue gas is leaking from the condensate drain tubing by holding your fingers near the opening.

2. If you notice flue gas leaking from the opening, this indicates a dry condensate drain trap. If problem persists, contact a qualified service technician to inspect the boiler and condensate line and refill the condensate trap.

92

3. If applicable, check the condensate neutralizer and ensure it is full of condensate neutralizing marble chips.

C. Maintenance Only to be Performed by a Qualified

Service Technician

Removing the Cabinet Cover and Inspecting the Boiler

Before carrying out any work on the boiler, switch off the power supply at the external power switch and circuit breaker. Close the external gas shutoff.

DANGER

Ensure power and gas to the appliance are shut off before performing the following operations. Failure to do so will result in substantial property damage, severe personal injury, or death.

See Figure 95 to access the interior of the boiler:

1. Unscrew the two screws from the front panel (a).

2. Pull the panel forwards and uncouple it from the upper pins (b).

3. Pivot the electronic housing by pushing in tabs (c).

(a)

(c)

Figure 95 - Removing Housing

(b)


Check the Air Vent

Loosen cap one counterclockwise turn to allow air vent to operate. If the air vent works freely without leaking, close the valve by turning clockwise. If vent does not operate correctly, contact a qualified service technician to replace the vent.

Check Primary and Gas Piping

1. Remove the boiler cover and perform a gas leak inspection following Operating Instructions, page 2, this manual. If gas odor or leak is detected, follow procedures on page 2. Call a qualified service technician.

2. Visually inspect for leaks around the boiler water connections and around the heat exchanger. Visually inspect the external system piping, circulators, and system components and fittings.

Immediately call a qualified service technician to repair any leaks.

WARNING

Have leaks fixed at once by a qualified service technician.

Failure to comply could result in substantial property damage, severe personal injury, or death.

Before Starting Maintenance:

1. Ensure the power and gas remain off.

2. Close the valves of heating and hot water circuit.

3. Remove the front panel as shown in Figure 95.

4. If necessary, empty the appliance on the water side.

Draining Procedure

To drain the heating system:

1. Ensure the boiler power and gas remain off.

2. Loosen the automatic air relief valve.

3. Open the system drain valve and collect the escaping water in a container.

4. Drain the water from the lowest points of the system (where applicable).

If the system is to be inactive in areas where the room temperature may fall below 0°C during winter, it is recommended that anti-freeze liquid be added to the heating system in order to avoid the need for repeated draining. Ensure the antifreeze used is compatible with the stainless steel boiler heat exchanger.

WARNING

NEVER use any toxic chemical, including automotive, standard glycol antifreeze, or ethylene glycol made for hydronic (non-potable) systems. These chemicals can attack gaskets and seals in water systems, are poisonous if consumed, and can cause personal injury or death.

It is recommended to use antifreeze which contains PROPYLENE

GLYCOLS as these inhibit corrosion. Use the quantities and formulation suggested by the antifreeze manufacturer to protect against freezing in your region and prevent scaling and corrosion.

Regularly check the pH level of the water/anti-freeze mix in the boiler circuit and replace it when the value measured is lower than the limit prescribed by the manufacturer.

DO NOT MIX DIFFERENT TYPES OF ANTI-FREEZE.

The manufacturer will not be held liable for any damage caused by the appliance or the system due to the use of inappropriate antifreeze substances or additives.

Draining the DHW System and Indirect Water Heater

Every time there is a danger of freezing, the domestic hot water system must be drained as follows:

1. Shut off the main water inlet valve.

2. Open all the hot and cold water taps.

3. Drain the water from the lowest points of the system.

93


WARNING

Water drained from the boiler could be scalding hot. Wait for the boiler to cool before draining water, and take precautions when draining water. Failure to do so could result in property damage, personal injury, or death.

WARNING

Allowing the boiler to operate with a dirty combustion chamber will hurt operation. Failure to clean the heat exchanger as needed by the installation location could result in boiler failure, property damage, personal injury, or death.

Such product failures ARE NOT covered under warranty.

The combustion chamber insulation in this product contains ceramic fiber material. Ceramic fibers can be converted to cristobalite in very high temperature applications. The

International Agency for Research on Cancer (IARC) has concluded, “Crystalline silica inhaled in the form of quartz or cristobalite from occupational sources is carcinogenic to humans

(Group 1).”

• Avoid breathing dust and contact with skin and eyes.

• Use a NIOSH certified dust respirator (N95). This type of respirator is based on the OSHA requirements for cristobalite at the time this document was written. Other types of respirators may be needed depending on job site conditions. Current

NIOSH recommendations can be found on the NIOSH website: http://www.cdc.gov/niosh/homepage.html. NIOSH approved respirators, manufacturers, and phone numbers are also listed on this website.

• Wear long-sleeved, loose fitting clothing, gloves, and eye protection.

• Apply enough water to the combustion chamber lining to prevent dust.

• Wash potentially contaminated clothes separately from other clothing. Rinse clothes washer thoroughly.

NIOSH stated First Aid.

• Eye: Irrigate immediately.

• Breathing: Fresh air.

Cleaning the Heat Exchanger Combustion Chamber

*Before beginning this procedure, have on hand the following items:

• a nylon or other non-metallic brush

• an FDA approved liquid lime scale remover in a spray bottle

• gloves and eye protection

1. Unhook the junction box

2. Unhook the junction box support from the fan and silencer

Figure 97 - Unhook the junction box support

3. Remove the silencer

Figure 98 - Remove the silencer

4. Unscrew the two nuts and remove the gas pipe.

Figure 99 - Remove the gas pipe

Figure 96 - Removing the Junction box

94

5. Remove the gas orifice.

6. Remove the electrical connection of the electrode.

7. Remove the electrical connection to the igniter.

8. Loosen the four screws and remove the burner unit.


13. After all maintenance is complete, reinstall the combustion assembly. Ensure all gaskets are installed and all components are tightened properly.

14. Restore power and gas to the boiler. Restart the boiler. Check for leaks in the combustion system. Observe operation for 5 to 10 minutes.

If boiler is operating properly, condensate is flowing normally, and no gas leaks are detected, combustion coil cleaning is complete.

Checking the Burner

While the combustion assembly is removed from the heat exchanger, inspect the burner. Proceed as follows:

1. Unscrew the four screws securing the two electrodes to the burner plate.

Figure 100 - Remove the Combustion Assembly 1

9. Pull the assembly towards you.

Figure 101 - Remove the Combustion Assembly 2

10. Check the back wall insulation and replace if necessary.

WARNING

Protect the back wall insulation from water before performing any cleaning. Failure to do so could result in damage to the insulation, improper boiler operation, personal injury, or death.

11. Disconnect the condensate hose and siphon cap from the boiler.

12. Clean the combustion chamber by spraying water or solution into the combustion assembly and monitor the flow through the combustion system. Liquid should flow freely through each tube.

If there is an obstruction, increase the flow on the tube to force blockage out.

WARNING

Do not use solvents to clean any of the boiler components.

The components could be damaged, resulting in unreliable or unsafe boiler operation, substantial property damage, severe personal injury, or death.

Figure 102 - Remove the Electrodes

2. Remove the ceramic fiber.

3. Remove the four screws and pull the burner toward you.

NOTE: Whenever replacing the burner, ALWAYS replace the burner gasket.

Figure 103 - Disassembled Burner Assembly

95


4. Verify and replace the other gaskets if they are damaged or showing signs of deterioration.

5. Make sure that the burner is not damaged. Replace if necessary.

6. Reassemble the burner assembly.

7. Ensure the combustion assembly sealing ring is not damaged.

Replace if necessary.

DANGER

Failure to replace a damaged sealing ring will result in exhaust gas leaks, substantial property damage, severe personal injury, or death.

8. Reinstall the two removed electrodes with the four removed screws.

9. Reassemble the combustion assembly and tighten the four screws.

10. Reconnect the gas line. Replace the sealing ring.

11. Reconnect the electrode electrical connections.

12. Reinstall the support bracket of the air pressure switch.

13. Reinstall the silencer.

14. Reinstall the air pressure switch.

15. Reconnect the air pressure switch electrical connection.

Clean the Condensate Trap

WARNING

Take care when opening the condensate trap cap, as condensate may escape. Failure to do so could result in property damage due to leaks, personal injury, or death.

DANGER

When servicing is complete, make sure the condensate collector cap is replaced securely. The condensate trap assembly MUST

BE PROPERLY INSTALLED according to these instructions when operating the boiler. Operating the boiler without the condensate trap assembly will cause flue gases to leak and result in serious personal injury or death.

the entire condensate trap assembly.

3. Refill the condensate trap with fresh water prior to operating the boiler.

4. If a condensate neutralizer kit is installed, check the assembly when cleaning the condensate trap, and replenish the limestone chips if necessary. When replacing the limestone chips, take care to ensure chips are no smaller than ½” to avoid blockage in condensate piping. See Figure 55 for piping details.

5. Check condensate piping for sagging and/or leakage. Repair any sags or leaks before restoring power to the boiler.

6. If the boiler has a condensate pump, ensure the pump operates

CAUTION

It is very important that the condensate piping be no smaller than ¾”. To prevent sagging and maintain pitch, condensate piping should be supported with pipe supports, and pitched

¼” per foot to allow for proper drainage.

The condensate line must remain unobstructed, allowing free flow of condensate. If condensate freezes in the line, or if line is obstructed in any other manner, condensate can exit from the tee, resulting in potential water damage to property.

properly before considering maintenance complete.

WARNING

Ensure the boiler and CH and DHW heating systems have been drained following the instructions in this manual BEFORE attempting to remove the CH or DHW filters. Failure to do so could result in property damage, serious personal injury, or death.

Cleaning the CH and DHW Inlet Filters

1. Remove the clip and remove the CH filter.

Figure 104 - Clean the Condensate Trap

1. Remove the condensate hose and open the siphon cap.

2. When the condensate trap is sufficiently clean, reassemble in the reverse order.

boiler. If any parts are missing DO NOT operate the boiler. Replace

WARNING

Do not install the condensate assembly if a component is lost or missing. Replace the entire assembly. Failure to follow this warning could result in property damage, serious personal injury, or death.

Do not operate the appliance without the clear hose attached from the hose barb to the pressure switch. Failure to do so could result in property damage, serious personal injury, or death.

96

Figure 105 - Removing the CH Filter

WARNING

Water drained from the boiler could be scalding hot. Wait for the boiler to cool before draining water, and take precautions when draining water. Failure to do so could result in property damage, personal injury, or death.

2. Clean the filter with a toothbrush and clean running water.

3. Reinstall the CH Filter.

4. Remove the DHW flow switch to have access to the DHW inlet filter. Remove the clip and pull the flow switch assembly upward.


DANGER

Failure to replace a damaged sealing ring will result in exhaust gas leaks, substantial property damage, severe personal injury, or death.

5. Proceed in the reverse order to reinstall the components.

Replacing the Fan

1. Remove the combustion assembly as described in Cleaning the

Heat Exchanger Combustion Chamber and Checking the Burner.

2. Remove the three nuts and bolts to disconnect the fan from the air inlet assembly.

Figure 107 - Removing the Fan

DHW Filter

Figure 106 - Removing the DHW Filter

5. Clean the filter with a toothbrush and clean running water.

6. Reinstall the DHW inlet filter.

7. Refill the DHW circuit following the filling and purging instructions in this manual.

8. Refill the CH circuit following the filling and purging instructions in this manual.

9. Restore gas and power to the boiler.

D. Replacing Components

At any point in time over the boiler’s service life it may be necessary to replace boiler components. If the boiler displays an error message, determine its cause and possible remedies.

If the remedy is replacement of a component, ensure:

1. That the boiler is powered OFF. Press the ON/OFF button to turn the boiler off. Then turn the main electrical power to the boiler off at the circuit breaker.

2. The boiler electrical connection is connected properly. A loose electrical connection could the root cause of problems.

3. The front cover has been removed.

4. The main shutoff gas valve is closed.

5. All water valves to and from the boiler (supply, return, inlet, outlet) are closed.

6. If necessary, the water has been drained from the boiler and/or appropriate circuit.

7. No water can get into the display / control panel.

Replacing the Burner

1. Remove the front cover and pivot the electronic housing following the instructions described in Removing the Cabinet Cover and

Inspecting the Boiler.

2. Remove the combustion assembly as described in Cleaning the

Heat Exchanger Combustion Chamber.

3. Remove, inspect, and replace the burner as described in Checking

the Burner.

4. Replace all damaged seals that are damaged or showing signs of wear.

1 2 3 4 5 6

Figure 108 - Removed Fan, Bi-Venturi, and Components

Legend:

1 - Bi-Venturi Tube

(Replace with the Bi-Venturi for Gas Propane present in the Convertion Kit delivered with the boiler - See Fuel

Conversion Kit Instructions)

2 - Gas Orifice (Replace with the

Gas Orifice for Gas Propane present in the Convertion

Kit delivered with the boiler

- See Fuel Conversion Kit

Instructions)

3 - Gas Seal

4 - O-Ring

5 - Fan

6- Fan to Air Inlet Channel

Gasket

3. Inspect the fan to air inlet channel gasket. Ensure it is not damaged or deteriorating.

DANGER

Ensure that the correct gas orifice and bi-venturi are used for the correct fuel type for the boiler - Natural Gas or Propane. See

Conversion Kit Instructions. Failure to do so will result in substantial property damage, severe personal injury, or death.

97


4. Loosen the three screws to release the bi-venturi from the fan.

Ensure the O-Ring is not damaged or deteriorating.

5. Reassemble the bi-venturi and fan assembly in the reverse order.

Ensure the O-Ring is installed between the bi-venturi and fan.

DANGER

Failure to replace damaged or deteriorating gaskets or O-Rings will result in exhaust gas leaks, substantial property damage, severe personal injury, or death.

6. Reinstall the fan to the air inlet channel. Ensure the gasket is assembled between the fan and air inlet channel.

7. Reconnect the gas line. Replace the sealing ring.

8. Restore the electrical connections of the electrodes.

9. Reinstall the support bracket of the pressure switch.

10. Reinstall the silencer.

11. Reinstall the air pressure switch.

12. Reconnect the electrical connection of the air pressure switch.

Removing the By-Pass Valve

TRX085 and TRX120

The by-pass valve is located in the left hydraulic block. To remove it:

1. Ensure the boiler is drained of water.

2. Remove the securing clip from the valve.

3. Pull the by-pass valve assembly upwards.

CAUTION

It is possible to block the overflow valve insert. To do this, remove the overflow valve insert and refit it again.

Removing the By-Pass Valve

TRX110C and TRX150C

The by-pass valve is located in the right hydraulic block. To remove it:

1. Ensure the boiler is drained of water.

2. Rotate clockvise to unhook the locking ring of the diverter valve.

3. Remove the securing clip from the valve.

4. Pull the by-pass valve assembly upwards.

Figure 112 - Remove the locking ring of the diverter valve

Figure 109 - Remove the Clip

Figure 110 - Remove the By-Pass Valve


98

Figure 113 - Remove the clip and pull the assembly


CAUTION

It is possible to block the overflow valve insert. To do this, remove the overflow valve insert and refit it again.


Replacing the Main Heat Exchanger

1. Remove the combustion assembly as described in Cleaning the

Heat Exchanger Combustion Chamber.

2. Loosen and remove the CH relief valve.

3. Loosen and remove the CH relief valve pipe and gasket.

4. Remove the securing clips from positions a and b.

Figure 115 - Remove the locking ring of the diverter valve

5. Disconnect the plastic pipes from the manual breather.

a b

Figure 116 - Remove the CH Outlet Pipe

6. Disconnect the heating supply pipe.

7. Disconnect the condensate line.

8. Remove the clip and disconnect the connection line from the heating return pipe.

Figure 118 - Remove the Heat Exchanger

Replacing the Gas Valve

1. Remove the electrical connections from the gas valve.

2. Remove the two screws under the combustion assembly and disconnect the gas line from the gas valve.

3. Remove the gas valve.

4. Reinstall the new gas valve in reverse order.

Figure 117 - Remove the Condensate Pipe and CH Return Pipe

9. Remove the four screws to remove the heat exchanger.

10. Proceed in reverse order to install the new device.

Figure 119 - Disconnect the Gas Line

5. BE SURE TO USE NEW SEALING RINGS.

6. Ensure there are no gas leaks.

99


Replace the Main PCB

1. Fold down the electronics box.

2. Unlock the two clips and open the electronics box cover.

DANGER

Failure to replace the sealing rings will result in exhaust gas leaks, substantial property damage, severe personal injury, or death.

3. Disconnect the electrical connections.

4. Unhook the controller board and remove it.

5. Proceed in reverse order to install the new PCB.

6. Follow the instructions provided with the replacement PCB kit for setting all necessary parameters.


CAUTION

In unusually dirty or dusty conditions, care must be taken to keep boiler cabinet door in place at all times. Failure to do so VOIDS WARRANTY!

WARNING

Allowing the boiler to operate with a dirty combustion chamber will hurt operation. Failure to clean the heat exchanger as needed by the installation location could result in boiler failure, property damage, personal injury, or death. Such product failures ARE NOT covered under warranty.

The combustion chamber insulation in this product contains ceramic fiber material. Ceramic fibers can be converted to cristobalite in very high temperature applications. The

International Agency for Research on Cancer (IARC) has concluded, “Crystalline silica inhaled in the form of quartz or cristobalite from occupational sources is carcinogenic to humans

(Group 1).”

• Avoid breathing dust and contact with skin and eyes.

• Use a NIOSH certified dust respirator (N95). This type of respirator is based on the OSHA requirements for cristobalite at the time this document was written. Other types of respirators may be needed depending on job site conditions.

Current NIOSH recommendations can be found on the NIOSH website: http://www.cdc.gov/niosh/homepage.html. NIOSH approved respirators, manufacturers, and phone numbers are also listed on this website.

• Wear long-sleeved, loose fitting clothing, gloves, and eye protection.

• Apply enough water to the combustion chamber lining to prevent dust.

• Wash potentially contaminated clothes separately from other clothing. Rinse clothes washer thoroughly.

NIOSH stated First Aid.

• Eye: Irrigate immediately.

• Breathing: Fresh air.

Figure 120 - Disconnect the Main PCB

E. After Maintenance is Complete

Functional Test

After maintenance is complete, ensure the CH circuit is filled and purged with a pressure of 12 psi. Ensure the DHW circuit is filled and purged.

1. Power the boiler on.

2. If necessary, purge air again from the CH and DHW circuits.

3. Check the boiler and system settings and components. Ensure all adjustments are working properly.

4. Ensure the exhaust pipe is connected properly.

5. Reinstall the boiler front cover.

6. If necessary, set the maintenance interval.

Inform the User

1. Inform the user of any changes / adjustments / replacements in the system.

2. Ensure the user understands how the system works.

3. Hand the instructions to the user. Ensure the instructions will be kept close to the unit.

4. Have the user perform these regular tasks:

• Check the system water pressure regularly.

• If necessary, restore pressure and vent the system.

• Set the setpoints and control systems to ensure correct and economical control of the system.

• Have the system serviced in accordance with regulations at regular intervals.

• NEVER attempt to service the boiler or adjust the combustion system.

The boiler requires minimal periodic maintenance under normal conditions. However, in unusually dirty or dusty conditions, periodic vacuuming of the cover to maintain visibility of the display and indicators is recommended.

Periodic maintenance should be performed once a year by a qualified service technician to ensure that all the equipment is operating safely and efficiently. The owner should make necessary arrangements with a qualified heating contractor for periodic maintenance of the boiler.

Installer must also inform the owner that the lack of proper care and maintenance of the boiler may result in a hazardous condition.

100


INSPECTION ACTIVITIES

PIPING

Near boiler piping Check boiler and system piping for any sign of leakage. Leaking pipes could cause property damage. Make sure all piping is properly supported. See

User’s Information manual for instructions.

DATE LAST COMPLETED

1st YEAR 2nd YEAR 3rd YEAR 4th YEAR*

Vent

Gas

Check condition of all vent pipes and joints. Ensure all vent piping is properly supported. Check for obstructions at exhaust and intake termination points.

Check Gas piping, test for leaks and signs of aging. Make sure all pipes are properly supported.

SYSTEM

Visual

Functional

Temperatures

Temperatures

Do a full visual inspection of all system components.

Test all functions of the system (central heat, water heating, Safeties)

Verify safe settings on boiler or Anti-Scald Valve

Verify programmed temperature settings

ELECTRICAL

Connections

Smoke and CO detector

Circuit Breakers

Switch and Plug

Check wire connections. Make sure they are tight.

Verify devices are installed and working properly. Change batteries if necessary.

Ensure the circuit breaker is clearly labeled. Exercise circuit breaker.

Verify ON/OFF switch and convenience plug are both functional

CHAMBER/BURNER

Combustion Chamber Check burner tube and combustion chamber coils. Clean according to maintenance section of manual. Vacuum combustion chamber.

Spark Electrode

CONDENSATE

Clean. Set gap at 1/8”.

Condensate Trap

Neutralizer

Condensate hose

Clean debris from the condensate trap. Fill with clean water.

Check condensate neutralizer. Replace if necessary.

Disconnect condensate hose. Clean out dirt and re-install. (NOTE: Verify the flow of condensate, making sure that the hose is properly connected during final inspection.)

GAS

Pressure

Pressure Drop

Measure incoming gas pressure (3.5 to 10.5” W.C. NG, 8 to 13” W.C. LP)

Measure drop in pressure on light off (no more than 1” W.C.)

Check gas piping for leaks. Verify that all are properly supported.

Check for leaks

COMBUSTION

CO/CO2 Levels Check CO and CO2 levels in Exhaust. Record at high and low fire.

SAFETIES

ECO (Energy Cut Out) Check continuity on flue temperature sensor. Replace the flue gas temperature sensor if corroded.

Check continuity on Water ECO. Check position and sensor resistance.

Ensure air pressure switch is properly connected (electrical connections and silicone pipe).

DHW LOOP - Combi Models

It is recommended to flush the DHW heat exchanger annually if water hardness exceeds 12 grains per gallon (considered extremely hard water). If water hardness falls below 12 grains per gallon it is recommended to flush the heat exchanger every two to three years.

It is also recommended to clean the CH and DHW inlet filters annually.

FINAL INSPECTION

Check list

Homeowner

TECH SIGN OFF

Verify that you have completed entire check list. WARNING: FAILURE TO DO

SO COULD RESULT IN SERIOUS INJURY OR DEATH.

Review what you have done with the homeowner.

Table 32 - *Continue annual maintenance beyond the 4th year as required.

101

Part 16 - Shutdown

A. Shutdown Procedure

If the burner is not operating, disconnect the electrical supply.

If the burner is operating, lower the set point value to 86 o

F(for high temperature system) or 68°F (for low temperature system) and wait for the burner to shut off. Continue to wait for the combustion blower to stop, so all latent combustion gases are purged from the system. This should take a maximum of 40 to 90 seconds.

B. Vacation Procedure

If there is danger of freezing, change the set point to 86 o

F(for high temperature system) or 68°F (for low temperature system). DO NOT turn off electrical power. If there is no danger of freezing, follow

“Shutdown Procedure”.

C. Failure to Operate

Should the burner fail to light, the control will perform four more ignition trials prior to entering a lockout state. Note that each subsequent ignition trial will not occur immediately. After a failed ignition trial, the blower must run for approximately 5 seconds to purge the system.

If the burner lights during any one of these five ignition trails, normal operation will resume.

If the burner does not light after the fifth ignition trial, the control will enter a lockout state.

This lockout state indicates that a problem exists with the boiler, the controls, or the gas supply.

Under such circumstances, a qualified service technician should be contacted immediately to properly service the boiler and correct the problem. If a technician is not available, depressing and holding the

RESET button for more than 1 second will remove the lockout state so additional trials for ignition can be performed.

If the RESET key is not pressed (error code 501 or 503), the boiler will reset automatically after an hour.

Outdoor Sensor

(7250P-319)

Outside

Temperature

( o

F)

-22

-13

-4

5

14

23

32

41

86

95

104

113

50

59

68

77

Resistance

(ohms)

178605

132045

98438

73995

56079

42846

32997

25609

20027

15777

12517

10000

8042

6510

5302

4343

176

185

194

202

Table 33 - Sensor Temperature Resistance

212

140

149

158

167

104

113

122

131

Supply Temperature Sensor

(7250P-324)

Boiler Sensor

(7250P-667)

Indirect Sensor

(7350P-325)

High / Low

Temp Sensor

Temp. ( o

F)

Resistance

(Ohms)

68

77

86

95

32

41

50

59

27219

22021

17926

14674

12081

10000

8315

6948

5834

4917

4161

3535

3014

2586

2228

1925

1669

1452

1268

1110

974

D. Important Notice

NOTICE

It is extremely important that whenever work is performed on the plumbing system that either:

• The appliance is powered off, or,

• The appliance is valved off and isolated from the plumbing system.

Failure to take these measures could result in a dry-firing condition.

102

2

100

200

300

400


TRX - TRXC

402

415

312

417 210

282

214

282

201

425

426

551

152

405

*116

152

317

403

316

404

372

123

152

178

111

105

271

213

211

151

180

171

316

152

114

151

117

202

423

190

150

102

172

173

183

371

310

315

415

*116

101

172

110

271

Table 34 - Replacement Parts List

103


104

Description

0100 BURNER ASSEMBLY

0101 IGNITION ELECTRODE

0102 ELECTRODE (DETECTION)

0105 FLUE PROBE 10K D4X39

0110 INSULATION (BURNER DOOR)

0111 HEAT EXCHANGER 120/150C

HEAT EXCHANGER 85/110C

0114 BURNER 24KW

BURNER 30kW

BURNER 35KW

0116 DOOR ASSY

0117 CONDENSATE TRAP

0123 AIR VENT

0150 CONDENSATE DRAIN HOSE D:19 L:500

0151 CONDENSATE COLLECTION PIPE

0152 CONNECTION Y +TUBES

0171 GASKET (BURNER)

0172 GASKET (IGNITION ELECTRODE)

0173 DOOR GASKET

0178 O-RING 17.86X2.62

0180 SPARK GENERATOR

0183 PLASTIC PIPE 2" CPVC L=5,5''

0190 O-RING 41.6X2.4

0200 GAS SECTION

0201 GAS VALVE

0202 FAN

0210 GAS RESTRICTOR D: 5,5

GAS RESTRICTOR D: 6

GAS RESTRICTOR D: 6.40



0211 MIXER 085/85WBN LP

MIXER 085/85WBN NG

MIXER 110C120WCN NG

MIXER 120-150C/120 WBN-WCN LP

MIXER 120-150C/120 WBN-WCN NG

MIXER 85/120WCN LP

0213 SILENCER

0214 GAS PIPE

GAS PIPE

0271 FAN GASKET

0282 SHEET GASKET D: 24-18.2-1.5

0300 TOP PANEL ASSEMBLY

0310 CASE COVER ASSY

0312 FLUE TEST PORT PLUG

0315 SPLASH PREVENTER

0316 AIR PRESSURE SWITCH

0317 PIPE (CONDENSATE AIR PRESSURE SWITCH)

0371 COLLAR GASKET

0372 SUPPORT (AIR PRESSURE SWITCH)

0400 SEALED CASE

0402 PRESSURE RELIEF VALVE

0403 PIPE (PRESSURE RELIEF VALVE)

0404 GASKET 1Z

0405 SILICONE PIPE D:8 L:330

0415 SIDE PANELS LEFT + RIGHT

0417 CASE PANEL (FRONT)

0423 BOTTOM PANEL

0425 GAS ADAPTER (3/4” NPT)”

0426 SHEET GASKET D: 24-17-1.5

65118645

65118672

65118689

65118718

60001923

60001924

65118713

65118688

65118669

65118722

65118717

65118712

65118724

65113062

65118668

65118714

65116530

60022835-01

65118673

65118674

65118667

65118694

65118715

65118671

65116596

65116603

65116604

65118690

65117391

65119079

60000976

65118670

65119326

65116521

65116263

65105788

61308091

65119323

65119324

65118686

Manf. Pt. N Type

65119579

65104295

65116536

65118678

65119086

65118682

65118680

65118683

65119083

569387

65116520

65119081

65119080

65119082

65119084

60061855-19

10C.

1 2

TRX085.

....

. .

....

....

....

....

....

....

.

.

.

.

....

....

....

....

....

....

....

....

....

....

From to

3

4

500

570

571

521

563

514

590

123

582

565

576

551

501

562

507

568

519 562


585 562 557

556

555

585

519

558

556

555

TRX082.-TRX120.

111

105

106


Description

0500 FLOW GROUP

0501 FLOW GROUP

FLOW GROUP

0507 SANITARY HEAT EXCHANGER (16 P.)

0514 BY-PASS VALVE

0519 INTERFACE 'System +' Open

0521 HYDRAULIC GROUP SUPPORT

0551 PIPE (CH OUTLET)

PIPE (CH OUTLET)

0555 CLIP D10

0556 O-RING 8.9X2.7

0557 PIPE (D.H.W.RETURN)

0558 BY-PASS PIPE

0562 CLIP D18

0563 CLIP D:12

0565 CLIP

0568 EXCHANGER GASKET

0570 CH ADAPTER (3/4”)”

0571 DHW ADAPTER (1/2”)”

0576 TEMPERATURE PROBE + CLIP

0582 O-RING 17.86X2.62

0585 O-RING 17.04X3.53

0590 O-RING 11.91X2.62

65118664

65118720

65116537

65117089

60001365

65119440

65116569

65116578

65104260

60002398

65115935

65116210

65104259

65114932

60000309

65114928

65114929

65114930

990686-01

61308091

65104262

65114940


10C.

1 2

TRX085.

..

. .

..

....

....

....

From to

5

6


600

123

BN

672

606

693

672

610

605

608

607

693

660

681

612

683

694 665

671

602

664

622

692

614

691

603

660

692

616

687

689

667

615

601

682

666

688

681

612

670

604

111

107

108


Description

0600 RETURN GROUP

0601 RETURN GROUP

RETURN GROUP

0602 LOW PRESSURE SWITCH

0603 CLIP

0604 TACO PUMP HIGH EFFICIENCY

0605 MOTOR (3-WAY VALVE)

0606 SENSOR (REED)

0607 FLOW METER

0608 CLIP

0610 MOTOR + SPRING 3 WAY VALVE KIT

0612 PLUG

0614 AUTO AIR VENT - TACO ENER+

0615 DRAIN COCK

0616 WATER FILTER

0622 BY-PASS VALVE

0651 PIPE (C.H. RETURN)

0660 CLIP D:10

0664 CLIP

0665 CLIP D:12

0666 CLIP

0667 CLIP D:6

0670 TEMPERATURE PROBE + CLIP

0671 CLIP

0672 CLIP

0681 O-RING 9.9X2.62

0682 O-RING 17.04X3.53

0683 O-RING 23.47X2.62

0687 O-RING 5.7X1.9

0688 O-RING 21.89X2.62

0689 PLUG

0691 O-RING 17.86X2.62

0692 O-RING 11.91X2.62

0693 O-RING 17.13X2.62

0694 O-RING 15,88X2,62

65116543

65114933

65104322

65114932

60000309

65100680

990686-01

65114926

65114931

65114937

65104262

65114939

61009834-10

65104320

65119580

61308091

65114940

65114938

65114941

65118665

65118721

65118663

61307589

65118666

65114936

65114921-01

65114919

65114927

65114924

65114920

65112086

65114922

65114923

65117089


10C.

1 2

TRX085.

....

....

....

....

....

....

....

....

....

....

From to

7

800

814

851

825

900

910

8

5000

Transf. gaz

Conv. gas

Trasf. gas

Transf. gas

5001

Options

Accessories

Opzioni

Accessorio

5020

816

886

889

888


885

881

842

824

815

801

880

109

110


Description

0800 ELECTRICAL BOX

0801 GROMMET (PCD TOOL ACCESS)

0814 CONTROL PANEL BASE

0815 P.C.B. (MAIN)

0816 P.C.B. (DISPLAY)

0824 CONTROL PANEL COVER

0825 PRESSURE/TEMPERATURE GAUGE

0842 CONTROL PANEL HINGE

0851 CONTROL PANEL

0880 3-WAY VALVE CABLE

3-WAY VALVE CABLE

CABLE (DETECTION ELECTRODE)

CABLE (FAN-POWER SUPPLY)

CABLE (FUME PROBE-EXTENSION)

CABLE (POWER SUPPLY)

CABLE (PUMP 5M PWM TACO)

CABLE (PWM)

CABLE (SPARK GENERATOR)

DISPLAY WIRING - 5 WIRES BLUES

998382

65118650

65118648

65117700

65118651

65118685

65116548

65119087

65118657

65118719

65118654

65118655

65119085

65118675

65118695

65118658

65118653

60000746

GAS VALVE CABLE

NTC CABLE

65118652

65118681

WIRING (AIR PRESSURE SWITCH AND PROBES) 65118656

WIRING (PUMP+JUN.BOX+MAIN BOARD) 65118659

WIRING (WI-FI BOARD)

0881 CONNECTOR 2P

0885 JUNCTION BOX BASE

0886 JUNCTION BOX COVER

0888 P.C.B. (JUNCTION BOX)

0889 P.C.B. (WIFI-REM3)

65115826

65111933

65118661

65118662

65118660

65118649

0900 JIG PLATE & PIPE FITTING

0910 WALL HOOK

5000 ACCESSORIES

5001 LP CONVERTION KIT 120C

LP CONVERTION KIT 150C & 110S

LP CONVERTION KIT 85S

5020 KIT AIR VENT

OUTDOOR SENSOR

RIDUCTORS (KIT)


60000625

65118723

65118716

65118687

65118684

65112215

65116836

10C.

1 2

TRX085.

....

..

....

....

....

....

....

....

....

....

. .

..

From to

9

10

6XXXXXXX

0101

0102

0105

0110

0111

0114

0211

0213

65119324

65118686

65118645

65118672

60001923

60001924

65118689

65118713

65118670

65119326

65116521

65116263

65105788

61308091

65119323

65118718

65118669

65118688

65118712

65118717

65118722

65118724

65113062

65118673

65118674

65118667

65118694

65118671

65118715

65116596

65116603

65116604

65118690

65117391

65119079

60000976

0151

0152

0171

0172

0116

0117

0123

0150

0173

0178

0180

0183

0190

0201

0202

0210

EN

FR

DE

ES

6XXXXXXX

6XXXXXXX

EN

FR

DE

ES

DE

ES

6XXXXXXX

NL

IT


DE

ES

NL

IT

IGNITION ELECTRODE

ELECTRODE ALLUMAGE

ELECTRODE (DETECTION)

ELECTRODE IONISATION

FLUE PROBE 10K D4X39

SONDE FUMÉE 10K D4X39

INSULATION (BURNER DOOR)

PANNEAU ISOLEMENT


ECHANGEUR 85/110C


ECHANGEUR 120/150C

BURNER 24KW

BRULEUR 24KW

65118673

65118674

65118667

65118694

65118671

65118668

65118714

65116530

60022835-01

65119579

GAS PIPE

TUBE GAZ

GAS PIPE

TUBE GAZ

FAN GASKET

JOINT VENTILATEUR

SHEET GASKET D: 24-18.2-1.5

JOINT PLAT D: 24-18.2-1.5

CASE COVER ASSY

COUVERCLE CAISSON EQUIPE

0214

0271

0282

0310

AUSTAUSCHER 120/150C

BRENNER 24KW

0114

65118715

65104295

FLUE TEST PORT PLUG

BOUCHON DE PRISE FUMEE

0312

65116596

65116536

1

0315

65118668

65118714

65116530

60022835-01

65119579

65104295

65116536

GASBUIS

TUBO GAS

GASBUIS

TUBO GAS

DICHTING VENTILATOR

GUARNIZIONE VENTILATORE

DICHTING VLAK D. 24-18.2-1.5

GUARNI. PIANA D: 24-18.2-1.5

ABDECK. BRENNERG. KOMPLETT

COPERCHIO TELAIO

STOP ROOKGASMEETNIPPELS

TAPPO ANALISI FUMI + O-RING

BESCHERMING WATERTOEVOER

PARASPRUZZI

1

1

1

1

1

1

1

GASBUIS

TUBO GAS

GASBUIS

TUBO GAS

DICHTING VENTILATOR

GUARNIZIONE VENTILATORE

DICHTING VLAK D. 24-18.2-1.5

GUARNI. PIANA D: 24-18.2-1.5

ABDECK. BRENNERG. KOMPLETT

COPERCHIO TELAIO

STOP ROOKGASMEETNIPPELS

TAPPO ANALISI FUMI + O-RING

BESCHERMING WATERTOEVOER

PARASPRUZZI

BURNER 30kW

BRULEUR 30kW

BURNER 35KW

BRULEUR 35KW

BRENNER 30kW

QUEMADOR 30kW

BRENNER 35KW

QUEMADOR 35KW

65116603

65118678

AIR PRESSURE SWITCH

PRESSOSTAT AIR

0316 65118678

DRUKSCHAKELAAR LUCHT

PRESSOSTATO ARIA

1

DRUKSCHAKELAAR LUCHT

PRESSOSTATO ARIA

65116604

65119086

1

0317 65119086

1

1

BUIS (LUCHTDRUKSCHAKELAAR COND.)

TUYAU CONDENS.COMMUT..PRES.AIR TUBO CONDENS.INTER.PRESIÓN AIRE TUBO CONDENSA PRESSOSTATO

DOOR ASSY

PORTE EQUIPEE

CONDENSATE TRAP

SIPHON

AIR VENT

PURGEUR D'AIR

SIPHON

0117

65118690

65118682

COLLAR GASKET

JOINT COLLIER

65119079

65118683

PRESSURE RELIEF VALVE

SOUPAPE DE SECURITE

0371

0402

65118682

65118683

DICHTING KLEMRING

GUARNIZIONE USCITA FUMI

VEILIGHEIDSGROEP

VALVOLA DI SICUREZZA

1

65117391

65118680

SUPPORT PRESSOSTAT D'AIR

1

0372 65118680

1

1

1

DICHTING KLEMRING

GUARNIZIONE USCITA FUMI

SUPPORTO PRESSOSTATO ARIA

VEILIGHEIDSGROEP

VALVOLA DI SICUREZZA

CONDENSATE DRAIN HOSE D:19 L:500

TUBE PVC D:19 L:500

60000976

65119083

PIPE (PRESSURE RELIEF VALVE)

TUBE SOUPAPE DE SECURITE

0403 65119083

BUIS VEILIGHEIDSKLEP

TUBO VALVOLA DI SICUREZZA

1

BUIS VEILIGHEIDSKLEP

TUBO VALVOLA DI SICUREZZA

CONDENSATE COLLECTION PIPE

TUBE FLEXIBLE

SCHLAUCH

0151

569387

GASKET 1Z

JOINT 1Z

1

0404 569387

AFDICHTING WATER/GAS 1Z

GUARNIZIONE ACQUA-GAS 1Z

1

AFDICHTING WATER/GAS 1Z

GUARNIZIONE ACQUA-GAS 1Z

CONNECTION Y +TUBES

RACCORD Y + TUBES

GASKET (BURNER)

JOINT DE FORME

FORMDICHTUNG

JUNTA

0171

65119326

65116520

SILICONE PIPE D:8 L:330

RACCORDO Y + TUBI

0405 65116520

SILICONESLANG D:8 L:330

TUBE SILICONE D:8 L:330

1

65116521

65119081

1

0415 65119081

ZIJPANEEL RECHTS + LINKS

PANNELLI LATERALI DX + SX

1

1

SILICONESLANG D:8 L:330

TUBO SILICONE D:8 L:330

ZIJPANEEL RECHTS + LINKS

PANNELLI LATERALI DX + SX

GASKET (IGNITION ELECTRODE)

JOINT ELECTRODE

65116263

65119080

CASE PANEL (FRONT)

PANNEAU FRONTAL

0417 65119080

VOORPANEEL

MANTELLO FRONTALE

1

VOORPANEEL

MANTELLO FRONTALE

DOOR GASKET

JOINT DE PORTE

TUERDICHTUNG

0173 65105788

65119082

BOTTOM PANEL

FOND 18-24 KW

0423 65119082

PLATE WIRE BOX

FONDO 18-24 KW

1

PLATE WIRE BOX

FONDO 18-24 KW

O-RING 17.86X2.62

JOINT TORIQUE D: 17.86-2.62

61308091

65119084

GAS ADAPTER (3/4” NPT)”

RACCORD 3/4

0425 65119084

VERBINDINGSSTUK 3/4"

RACCORDO 3/4

5

VERBINDINGSSTUK 3/4"

RACCORDO 3/4

SPARK GENERATOR

TRANSFORMATEUR D'ALLUMAGE

ZUNDTRAFO

ENCENDEDOR

0180 65119323

60061855-19

SHEET GASKET D: 24-17-1.5

JOINT PLAT D: 24-17-1.5

0426 60061855-19

DICHTING VLAK D. 24-17-1.5

GUARNI. PIANA D: 24-17-1.5

1

DICHTING VLAK D. 24-17-1.5

GUARNI. PIANA D: 24-17-1.5

PLASTIC PIPE 2" CPVC L=5,5''

0183 65119324

65118664

FLOW GROUP

GROUPE DEPART CHAUFFAGE

1

0501

O-RING 41.6X2.4

JOINT TORIQUE D: 41.6X2.4

GAS VALVE

VALVE GAZ

GASVENTIL

VALVULA GAS

0201

65118686

65118720

FLOW GROUP


65118645

65116537 0507

FAN

VENTILATEUR


DIAPHRAGME GAZ D: 6.40


DIAPHRAGME GAZ D: 6.90

GAS RESTRICTOR D: 5,5

DIAPHRAGME GAZ D: 5,5

65118664

65118720

FLOW GROUP


GROEP AANVOER VERWARMING

GRUPPO MANDATA

1

1

65116537

SCAMBIATORE SANITARIO 16

1

1

LAUFRAD

0202 65118672

65117089

BY-PASS VALVE

BY-PASS

60001923

60001365

1

0519 60001365

INTERFACCIA RISCALDAMENTO

1

PLATTENVENTIL GAS D: 6.90

DIAFRAGMA GAS D: 6.90

60001924

65119440

HYDRAULIC GROUP SUPPORT

SUPPORT HYDRAULIQUE

1

BY-PASS

0514

0521

65117089

65119440

BY-PASS

BY-PASS

HYDRAULIC SUPPORT BRACKET

STAFFA SUPPORTO IDRAULICO

1

1

PLATTENVENTIL GAS D: 5,5

DIAFRAGMA GAS D: 5,5

65118689

65116569

PIPE (CH OUTLET)

TUBE DEPART CHAUFFAGE

0551 65116569

BUIS VERTREK VERWARMING

TUBO MANDATA

1


GRUPPO MANDATA


GRUPPO MANDATA

WARMTEWISSELAAR SANITAIR 16 PLATEN

SCAMBIATORE SANITARIO 16

BY-PASS

BY-PASS

1

INTERFACCIA RISCALDAMENTO

HYDRAULIC SUPPORT BRACKET

STAFFA SUPPORTO IDRAULICO


TUBO MANDATA


DIAPHRAGME GAZ D: 8,5

GAS RESTRICTOR D: 6

DIAPHRAGME GAZ D: 6

PLATTENVENTIL GAS D: 8,5

DIAFRAGMA GAS D: 8,5

65118713

65116578

PLATTENVENTIL GAS D: 6

DIAFRAGMA GAS D: 6

65118718

65104260

PIPE (CH OUTLET)

TUBE DEPART CHAUFFAGE

CLIP D10

CLIP D10

0555

65116578

65104260


TUBO MANDATA

CLIP D10

CLIP D10

1

1


TUBO MANDATA

CLIP D10

CLIP D10

MIXER 085/85WBN NG

MIXER 085/85WBN NG

MIXER 085/85WBN LP

MIXER 085/85WBN LP

MIXER 085/85WBN LP

MIXER 085/85WBN LP

65118669

65118688

60002398

65115935

O-RING 8.9X2.7


PIPE (D.H.W.RETURN)

TUBE RETOUR EAU SANITAIRE

1

1

0556

0557

60002398

65115935

DICHTINGSRING D: 8.9-2.7

ANELLO OR D: 8.9-2.7

TUBE RETOUR EAU SANITAIRE

1

1



BUIS (GEZONDHEID WATER RETOUR)

TUBO RITORNO ACQUA CALDA





65118712

65118717

65116210

65104259

BY-PASS PIPE

TUBE BY-PASS

CLIP D18

CLIP D18

0558

0562

65116210

65104259

BUIS BY-PASS

TUBO BY-PASS

KLEM D18

CLIP D18

1

1

BUIS BY-PASS

TUBO BY-PASS

KLEM D18

CLIP D18

MIXER 110C120WCN NG

MIXER 110C120WCN NG

MIXER 85/120WCN LP

MIXER 85/120WCN LP

SILENCER

SILENCIEUX

MIXER 110C120WCN NG

MIXER 110C120WCN NG

65118722

65114932

MIXER 85/120WCN LP

MIXER 85/120WCN LP

SCHALLDAMPFE

SILENCIADOR

0213

65118724

65113062

60000309

65114928

CLIP D:12

CLIP D:12

CLIP

CLIP

EXCHANGER GASKET

JOINT ECHANGEUR

0563

0565

0568

65114932

KLEM D:12

CLIP D:12

60000309

65114928

KLEM

CLIP

SILENCER

DICHTING WISSELAAR

GUARNIZIONE SCAMBIATORE

1

1

1

KLEM D:12

CLIP D:12

KLEM

CLIP

DICHTING WISSELAAR

GUARNIZIONE SCAMBIATORE

111

10

11

1

1

1

10

1

1

1

1

1

1

1

1

1

10

1

1

1

1

1

10

1

1

1

1

1

1

1

1

1

1

1

1

1

5

1

5

11

12

0570

0571

0576

0582

0585

0590

0601

0672

0681

0682

0683

0666

0667

0670

0671

0651

0660

0664

0665

0614

0615

0616

0622

0687

0688

0689

0606

0607

0608

0610

0612

0602

0603

0604

0605

6XXXXXXX

65118663

61307589

65118666

65114936

65114921-01

65114919

65114927

65114924

65114920

65114929

65114930

990686-01

61308091

65104262

65114940

65118665

65118721

60000309

65100680

990686-01

65114926

65114931

65114937

65104262

65114939

65112086

65114922

65114923

65117089

65116543

65114933

65104322

65114932

61009834-10

65104320

65119580

EN

FR

DE

ES


EN

FR

DE

ES

DE

ES

6XXXXXXX

NL

IT

DE

ES

NL

IT

CH ADAPTER (3/4”)”

RACCORD 3/4

DHW ADAPTER (1/2”)”

RACCORD 1/2

ANSCHLUSS, 3/4

RACOR 3/4

ANSCHLUSS, 1/2

RACOR 1/2

0570

0691

0571

0692

TEMPERATURE PROBE + CLIP

SONDE NTC + CLIPS KIT

O-RING 17.86X2.62


O-RING 17.04X3.53

JOINT TORIQUE 3,53X17,04

O-RING 11.91X2.62


0576

0582

0585

0590

0693

0694

0801

0814

RETURN GROUP

GROUPE RETOUR (REMPL. MANUEL)

0601

0815

RETURN GROUP

GROUPE RETOUR

RUCKLAUFGRUPPE

GRUPO RETORNO

0816

O-RING 17.86X2.62


O-RING 11.91X2.62


O-RING 17.13X2.62


O-RING 15,88X2,62


GROMMET (PCD TOOL ACCESS)

JOINT ENTREE REGULATION

CONTROL PANEL BASE

PORTE INSTRUMENTS

0691

0692

0693

0694

0801

0814

P.C.B. (MAIN)

CIRCUIT IMPRIME PRINCIPAL

1

0815

P.C.B. (DISPLAY)

CIRCUIT IMPRIME D'AFFICHAGE

0816

61308091

65114940

65114938

65114941

998382

65118650

65118648

65117700


ANELLO OR D: 17.86-2.62


ANELLO OR D: 11.91-2.62


ANELLO OR D: 17.13-2.62


ANELLO OR D: 15.88-2.62

BEHUIZING BEDIENINGSPANEEL

PORTASTRUMENTI

PRINTKAART

SCHEDA PRINCIPALE

PRINT DISPLAY

SCHEDA DISPLAY

1

1

1

5

DICHTING

GOMMINO ACCESSO REGOLAZIONE

10

5

1

1


ANELLO OR D: 17.86-2.62


ANELLO OR D: 11.91-2.62


ANELLO OR D: 17.13-2.62


ANELLO OR D: 15.88-2.62

DICHTING

GOMMINO ACCESSO REGOLAZIONE

BEHUIZING BEDIENINGSPANEEL

PORTASTRUMENTI

PRINTKAART

SCHEDA PRINCIPALE

PRINT DISPLAY

SCHEDA DISPLAY

LOW PRESSURE SWITCH

DETECTEUR DE PRESSION

CLIP

CLIP

TACO PUMP HIGH EFFICIENCY

POMPE TACO

CLIP

CLIP

PUMPE TACO

0602

0603

0604

0824

0825

0842

LOW PRESSURE SWITCH

DETECTEUR DE PRESSION

1

CLIP

CLIP

PRESSURE/TEMPERATURE GAUGE

MANOMETRE / THERMOMETRE

CONTROL PANEL HINGE

SUPPORT

1

0824

0825

0842

65118651

65118685

65116548

DRUKSCHAKELAAR MINIMUM

COPERCHIO BOX

KLEM

CLIP

MANOMETER - THERMOMETER

TERMOIDROMETRO

SUPPORT

SUPPORTO

1

1

1

1

COPERCHIO BOX

MANOMETER - THERMOMETER

TERMOIDROMETRO

SUPPORT

SUPPORTO

MOTOR (3-WAY VALVE)

MOTEUR VANNE 3 VOIES

0605

0851

CONTROL PANEL

TABLEAU DE COMMANDE

0851 65119087

BEDIENINGSPANEEL

FRONTALINO

1

BEDIENINGSPANEEL

FRONTALINO

SENSOR (REED)

AMPOULE REED

FLOW METER

CARTOUCHE DEBIMETRE

PLUG

BOUCHON

AUTO AIR VENT - TACO ENER+

DEGAZEUR - TACO ENER+

REEDKONTAKT

STOPFEN

TAPON

0606

0880

SENSOR (REED)

AMPOULE REED

1

0880 60000746

SENSOR (REED)

SENSORE REED

1

1

BEDRADING DISPLAY

CABLAGE AFFICHEUR - 5 FILS BLEUS CABLEADO DISPLAY - 5 cables azules CABLAGGIO DISPLAY - 5 cavi azzurri

WIRING (WI-FI BOARD)

CABLAGE (CIRCUIT WIFI)

65115826

ELEKTRISCHE BEDRADING (PRINT WIFI)

CABLAGGIO SCHEDA WIFI

1

CLIP

CLIP

CLIP

CLIP

0608

CLIP

CLIP

GAS VALVE CABLE

CABLAGE VANNE GAZ

1

KABEL ZUNDER

65118652

KLEM

CLIP

BEDRADING GASBLOK

CABLAGGIO VALVOLA GAS

1

MOTOR + SPRING 3 WAY VALVE KIT

0610


KIT MOTORE+OTTURAT.VALV.3 VIE

1

KABEL (ZUNDTRAFO)

65118653


KIT MOTORE+OTTURAT.VALV.3 VIE

1

1

ELEKTRISCHE BEDRADING (PRINT WIFI)

CABLAGGIO SCHEDA WIFI

BEDRADING GASBLOK

CABLAGGIO VALVOLA GAS

KABEL (VONKENGENERATOR)

CABLAGGIO ACCENDITORE

0612

PLUG


CABLAGE ELECTRODE IONISATION

1 65118654

STOPPEN

TAPPO

1

0614

CABLE (FAN-POWER SUPPLY)

DEGAZEUR - TACO ENER+

1

65118655

ONTLUCHTINGSKLEP - TACO ENER+

VALVOLA SFOGO ARIA - TACO ENER+

1

1

1


CABLE ELECTRODO DE DETECCION CAVO ELETTRODO RILEVAZIONE

DRAIN COCK

ROBINET EVACUATION INSTALLA.

WATER FILTER

FILTRE EAU

BY-PASS VALVE

BY-PASS

PIPE (C.H. RETURN)

TUBE RETOUR CHAUFFAGE

CLIP D:10

CLIP D:10

WASSERSIEB

BY-PASS

BY-PASS

0622

RUCKLAUFROHR

0651

CLIP D:10

CLIP D:10

0616

0660

DRAIN COCK

ROBINET EVACUATION INSTALLA.

1 65118656

LEEGLAATKRAAN

RUBINETTO SVUOTAMENTO

1 1

BEDRADING (LUCHTDRUKSCHAKEL.EN VOELERS)

CÂBLAGE COMMUT.DE PRESS.D'AIR ET SONDES CABLEADO INTER.DE PRES.AIRE Y SONDAS CABLAGGIO PRESS.TO ARIA E SONDE

3-WAY VALVE CABLE

CABLAGE VANNE 3 VOIES

65118657

BEDRADING DRIEWEG KLEP

CABLAGGIO VALVOLA A 3 VIE

1



CABLE (PWM)

CABLAGE PWM

PIPE (C.H. RETURN)

TUBE RETOUR CHAUFFAGE

1

65118658

65118659

Cablage PWM

CABLAGGIO PWM

BUIS RETOUR VERWARMING

TUBO RITORNO

1

1

1

Cablage PWM

CABLAGGIO PWM

CLIP

CLIP

CLIP D:12

CLIP D:12

CLIP

CLIP

CLIP D:6

CLIP D:6

TEMPERATURE PROBE + CLIP

SONDE NTC + CLIPS KIT

CLIP

CLIP

CLIP

CLIP

O-RING 9.9X2.62


O-RING 17.04X3.53

JOINT TORIQUE 3,53X17,04

O-RING 23.47X2.62


O-RING 5.7X1.9


O-RING 21.89X2.62

JOINT TORIQUE 21.89X2.62

PLUG

BOUCHON

KLAMMER PUMPE

CLIP

CLIP D:12

CLIP D:12

CLIP

CLIP

CLIP D:6

CLIP D:6

CLIP

CLIP

CLIP

CLIP

STOPFEN

TAPON

0665

0666

0667

0670

0671

0672

0681

0682

0683

0687

0689

0881

0885

0886

0888

0889

0910

5001

CABLE (POWER SUPPLY)

CABLAGE D'ALIMENTATION

CLIP

CLIP

NTC CABLE

CABLAGE NTC

CABLE (PUMP 5M PWM TACO)

CABLE POMPE 5M PWM TACO

CLIP

CLIP

3-WAY VALVE CABLE

CABLAGE VANNE 3 VOIES

CONNECTOR 2P

CONNECTEUR 2 POLES

1

NTC CABLE

CABL. NTC

65118675

65118681

65118695

BEDRADING ONTSTEKING

CABLAGGIO ALIMENTAZIONE

KLEM

CLIP

BEDRADING NTC

CABLAGGIO NTC

BEDRADING POMP 5M PWM TACO

CAVO POMPA 5M PWM TACO

1

KABEL 3-WEGEVENTIL

65118719

KLEM

CLIP



0881 65111933

STEKKER 2-POLIG

CONNETTORE 2 POLI

5

1

5

1

BEDRADING ONTSTEKING

CABLAGGIO ALIMENTAZIONE

BEDRADING NTC

CABLAGGIO NTC

BEDRADING POMP 5M PWM TACO

CAVO POMPA 5M PWM TACO



CLIP D:6

CLIP D:6

1 65119085

KLEM D:6

CLIP D:6

1 1

VERLENGINGSKABEL ROOK SONDE

CABLE D'EXTENS.SONDE D'ECHAPPEM. CABLE DE EXTENS.SONDA DE HUMO CAVO PROLUNGA SONDA FUMI

1

STEKKER 2-POLIG

CONNETTORE 2 POLI

CLIP

CLIP

JUNCTION BOX BASE

CLIP

CLIP

JUNCTION BOX COVER

COUVERCLE (BOITE DE JONCTION)

P.C.B. (JUNCTION BOX)

CIRCUIT CLIP-IN LOADS NA

P.C.B. (WIFI-REM3)

CIRCUIT IMPRIME REM 3

WALL HOOK

PLATINE SUPPORT MURAL

LP CONVERTION KIT 85S

EQT TRANSF. G31 85S

LP CONVERTION KIT 150C & 110S

EQT TRANSF. G31 40 KW

PLUG

LP CONVERTION KIT 120C

EQT TRANSF. G31 30KW COMBI

1

5

0885

0886 65118662

KLEM

CLIP

DEKKING (JUNCTION BOX)

COPERCHIO JUNCTION BOX

5 0888 65118660



0889

0910

5001

65118661

65118649

60000625

65118687

65118716

65118723

CLIP FONDO JUNCTION BOX

PRINTKAART REM3

SCHEDA REM3

WANDBEVESTIGING

STAFFA D'AGGANCIO SUPERIORE

OMBOUWSET G31 85S

TRASFORMAZIONE G31 85S

OMBOUWSET G31 40 KW

TRASFORMAZIONE G31 40 KW

STOPPEN

TAPPO

1

5

5

10

5

10

1

1

1

FONDO JUNCTION BOX

DEKKING (JUNCTION BOX)

COPERCHIO JUNCTION BOX

1

PRINTKAART (CLIP IN LOADS NA)

CIRCUITO ELECTR.CLIP-IN LOADS NA SCHEDA CLIP-IN LOADS NA

PRINTKAART REM3

SCHEDA REM3

WANDBEVESTIGING

STAFFA D'AGGANCIO SUPERIORE

OMBOUWSET G31 85S

TRASFORMAZIONE G31 85S

OMBOUWSET G31 40 KW

TRASFORMAZIONE G31 40 KW

112

12 13

5

5

5

5

5

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

5

1

1

1

1

1

1

1

1

13

6XXXXXXX

5020 65112215

65116836

65118684

EN

FR

OUTDOOR SENSOR

SONDE EXTERIEURE FILAIRE

RIDUCTORS (KIT)

LIMITEURS DE DEBIT KIT

KIT AIR VENT

KIT AIR VENT

DE

ES

TUELLESET

REDUCTOR (KIT)

KIT AIR VENT

KIT AIR VENT

6XXXXXXX

65112215

65116836

65118684

OUTDOOR SENSOR

SONDE EXTERIEURE FILAIRE

RIDUCTORS (KIT)

LIMITEURS DE DEBIT KIT

KIT AIR VENT

KIT AIR VENT

DE

ES


NL

IT

BUITENVOELER

SONDA ESTERNA CON CAVI

DEBIETBEGRENZER (KIT)

LIMITATORI DI PORTATA (KIT)

KIT AIR VENT

KIT PROTEZIONE SCARICO FUMI

1

1

1

14 14

113


Maintenance Notes

114


Customer Installation Record Form

The following form should be completed by the qualified installer / service technician for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document.

Customer’s Name

Date of Installation

Installation Address

Product Name / Serial Number(s)

Comments

Installer’s Code / Name

Installers Phone Number

Signed by Installer

Signed by Customer

Installation Notes

IMPORTANT

Customer: Please only sign after the qualified installer / service technician has fully reviewed the installation, safety, proper operation, and maintenance of the system. If the system has any problems please call the qualified installer / service technician. If you are unable to make contact, please call your sales representative.

Distributor / Dealer: Please insert contact details.

115

Visit us online

NTI Boilers Inc.

30 Stonegate Drive Saint John,

NB E2H 0A4 Canada

Technical Assistance: 1-800-688-2575

Website: www.ntiboilers.com

Fax: 1-506-432-1135

420010970800

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