Takagi 100123330 Natural Gas Tankless Water Heater Installation manual

710 / 710 ASME (T-M32/ T-M32 ASME)

On-Demand Water Heater

Installation Manual and Owner’s Guide

 

 

 

 

 

ANSI Z21.10.3  and CSA 4.3 

 

WARNING

HLW

For supplying potable hot water

ASME model ONLY

If the information in these instructions is not followed 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.

Gas Tankless Water Heater



710 / 710 ASME

(T-M32 / T-M32 ASME )Models

Suitable for potable water heating and space‐heating * 

-WHAT TO DO IF YOU SMELL GAS

 Do not try to light any appliance.

 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 supplier's instructions.

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

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

*Please refer to local codes for space‐heating compliance.

 

FEATURING

 ENDLESS HOT WATER

 ON-DEMAND USAGE

 COMPACT, SPACE SAVING

 ENERGY CONSERVATION

 COMPUTERIZED SAFETY

 NO PILOT LIGHT

 EASY-LINK SYSTEM

If you have any questions, please call or write to:

500 Tennessee Waltz Parkway

Ashland City, TN 37015

Toll Free: 1-877-737-2840

CONTENTS

SPECIFICATIONS……………………….

INTRODUCTION…………………………

SAFETY GUIDELINES………………....

INSTALLATION…………………………..

General…………………………………

Included Accessories….……………….

6

Warning for Installations………………

7

Outdoor Installation…………………...

8

Indoor Installation…………………...…

9

5

6

2

3

4

Direct Intake Vent System…………….

10

Venting Instructions………………......

11

Gas Supply / Gas Pipe Sizing………..

15

Water Connections……………………

18

Pressure Relief Valve…………………

18

Electrical Connections……………......

19

Remote Controller Connections………

20

Pump Control Connections……………

21

Pump Control Mode……………………

22

Easy-Link System ……………………..

24

Multi-Unit System………………………

28

Initial Operation………………………..

30

NORMAL OPERATION………………….

31

Normal Operation…………………......

31

Flow……………………………………..

33

Freeze Protection System…………...

33

Temperature Settings………………….

34

Maintenance and Service………..…….

35

GENERAL TROUBLESHOOTING……..

36

OPERATING SAFETY……..……………..

39

APPLICATIONS………………………......

41

Re-Circulation…………………………..

41

Dual-Purpose Heating……………......

42

ADDITIONAL CLEARANCES……………

43

OPTIONAL ITEMS………...……………..

44

COMPONENTS DIAGRAM…………….

45

PARTS LIST………………………………

48

OUTPUT TEMPERATURE CHART……

50

LIMITED WARRANTY……………………

51

SPECIFICATIONS

Natural Gas Input

(Operating Range)

Min: 24,000 Btu/h

Max: 240,000 Btu/h

Propane Input

(Operating Range)

Min: 24,000 Btu/h

Max: 240,000 Btu/h

Gas Connection 3/4” NPT

Water Connections 3/4” NPT

Water Pressure 15 - 150 psi *

Natural Gas

Inlet Pressure

Min. 5.0” WC

Max. 10.5” WC

Propane

Inlet Pressure

Manifold Pressure**

Min. 8.0” WC

Max. 14.0” WC

Natural: 2.35” WC

Propane: 3.55” WC

Weight

Dimensions

Ignition

59 lbs.

H23.6”×W18.5”×D8.9”

Electric Ignition

Supply 120 VAC / 60 Hz

Operation 112 W

(0.93 A)

Electric

Consumption

Standby 8.9 W

(0.07 A)

Freeze-

Protection

187 W

(1.56 A)

*40 psi or above is recommended for maximum flow.

**The Manifold Pressure is the factory setting and generally should not need adjustment.

NOTE

*All references to the 710 (T-M32) also refer to the

710 ASME (T-M32 ASME) model.

*Check the rating plate to ensure this product matches your specifications.

*In accordance with ANSI Z21.10.3,

CO emission does not exceed 400 PPM for normal input.

The manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

- 2 -

INTRODUCTION

 This manual provides information necessary for the installation, operation, and maintenance of the water heater.

 The model description is listed on the rating plate which is attached to the front cover of the water heater.

 Please read all installation instructions completely before installing this product.

 If you have any problems or questions regarding this equipment, consult with the manufacturer or its local representative.

 This equipment is an on-demand, tankless water heater designed to efficiently supply endless hot water for your needs.

 The principle behind the water heater is simple:

1. A hot water tap is turned on.

2. Water enters the heater.

3. The water flow sensor detects the water flow.

4. The computer automatically ignites the burner.

5. Water circulates through the heat exchanger and then gets hot.

*This diagram illustrates tankless water heater design concepts only and is not accurate to the water heater’s physical description.

6. The computer will modulate the gas supply valve and water flow to produce the right amount of hot water at the correct temperature.

7. When the tap is turned off, the unit shuts down.

- 3 -

SAFETY GUIDELINES

WARNING



Installation and service must be performed by a qualified installer (for example, a licensed plumber or gas fitter), otherwise the warranty will be void.



The installer (licensed professional) is responsible for the correct installation of the water heater and for compliance with all national, state/provincial, and local codes.

PLEASE READ THIS MANUAL CAREFULLY AND FOLLOW ALL DIRECTIONS.

GENERAL

1.

Follow all local codes, or in the absence of local codes, follow the most recent edition of the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1

Natural Gas, Propane Installation Code in Canada.

2.

Properly ground the unit in accordance with all local codes or in the absence of local codes, with the National Electrical Codes: ANSI/NFPA 70 in the USA or CSA standard C22.1

Canada Electrical Code Part 1 in Canada.

3.

Carefully plan where you intend to install the water heater. Please ensure:

 Your water heater will have enough combustible air and proper ventilation.

 Locate your heater where water leakage will not damage surrounding areas (please refer to p. 5).

4.

Check the rating plate for the correct GAS TYPE, GAS PRESSURE, WATER PRESSURE

and ELECTRIC RATING.

*If this unit does not match your requirements, do not install and consult with the

manufacturer.

5.

If any problem should occur, turn off all hot water taps and turn off the gas. Then call a trained technician or the Gas Company or the manufacturer.

WARNING

 Water temperatures over 125ºF (52ºC) can cause severe burns instantly or death from scalding. The water temperature is set at 120ºF (49ºC) from the factory to minimize any scalding risk. Before bathing or showering always check the water temperature.



Do not store or use gasoline or other flammables, vapors, or liquids in the vicinity of this appliance.



Do not reverse the water and/or gas connections as this will damage the gas valves and can cause severe injury or death.

Follow the diagram on p. 17 when installing your water heater:



Do not use this appliance if any part has been in contact with or been immersed in water. Immediately call a licensed plumber, a

Prohibited

licensed gas fitter, or a professional service technician to inspect and/or service the unit if necessary.



Do not disconnect the electrical supply if the ambient temperature will drop below freezing. The Freeze Prevention System only works if the unit has electrical power. The warranty will not be covered if the heat exchanger is damaged due to freezing. Refer to the section on the Freeze Prevention System on p. 33 for more information.

- 4 -

INSTALLATION

All gas water heaters require careful and correct installation to ensure safe and efficient operation. This manual must be followed exactly. Read the “Safety Guidelines” section at the beginning of this manual.



The warranty will not cover damage caused by water quality. Water hardness that leads to scale formation and/or corrosion may affect/damage the water heater. Hard water scaling and/or corrosion must be avoided or controlled by proper water treatment.

CAUTION



The manufacturer recommends using the direct-vent kit, when the

water heater is installed in a beauty salon. Some chemicals used in a beauty salon may affect the flame sensor. Water heater may not work properly.



Although this water heater is designed to operate with minimal sound, the

manufacturer does not recommend installing the unit on a wall adjacent to a bedroom, or a room that is intended for quiet study or meditation, etc.



Locate your heater close to a drain where water leakage will not do damage to surrounding areas. As with any water heating appliance, the potential for leakage at some time in the life of the product does exist. The manufacturer will not be responsible for any water damage that may occur. If you install a drain pan under the unit, ensure that it will not restrict the combustion air flow.



The manufacturer does not recommend installing unit in an attic due

to safety issues. If you install your water heater in an attic:

WARNING











Make sure your unit will have enough combustion air and proper ventilation.

Keep the area around your water heater clean. When dust collects on the flame sensor, the water heater will shut down on errors.

If the above conditions cannot be met, use the direct-vent conversion kit

9007668005 (TM-DV32).

Locate unit for easy access for service and maintenance.

A drain pan is required to be installed under the water heater in case of leaks.

- 5 -

GENERAL

1. The manifold gas pressure is preset at the factory. It is computer controlled and should not need adjustment.

2. Maintain proper space for servicing. Install the unit so that it can be connected or removed easily. Refer to p. 8 and p. 9 for proper clearances.

3. The electrical connection requires a means of disconnection, to terminate power to the water heater for servicing and safety purposes.

4. If you will be installing the unit in a contaminated area with a high level of dust, sand, flour, aerosols or other contaminants/chemicals, they can become airborne and enter and build up within the fan and burner causing damage to the unit. In those environments (e.g. residential or commercial laundry facilities, hair salons, pet salons, chemical plants etc.), please purchase the optional direct-vent conversion kit and convert the water heater to a sealed combustion unit. Direct venting allows the water heater to draw fresh intake air from the outside. The warranty will not cover damage caused to the unit due to installation in a contaminated environment that has not been converted using the direct-vent conversion kit.

5. Particles from flour, aerosols, and other contaminants may clog the air vent or reduce the functions of the rotating fan and cause improper burning of the gas. Regularly ensure that the area around the unit is dust- or debris-free; regular maintenance is recommended for these types of environment.

6. Do not install the unit where the exhaust vent is pointing into any opening in a building or where the noise may disturb your neighbors. Make sure the vent termination meets the required distance by local code from any doorway or opening to prevent exhaust from entering a building (refer to p. 14).

INCLUDED ACCESSORIES

Check that these items below are included with the water heater.

Items

Manual

Communication Cable

Qty: 1

Qty: 1

- 6 -

WARNING FOR INSTALLATIONS

FOR YOUR SAFETY, READ BEFORE INSTALLATION:

Do not install the heater where water, debris or flammable vapors may get into the flue terminal. This may cause damage to the heater and void the warranty.

Do not have the vent terminal pointing toward any opening into a building. Do not locate your heater in a pit or location where gas and water can accumulate.

Prohibited Prohibited

Do not install this water heater under an overhang less than 3 feet from its top or eaves. The area under an overhang must be open to three sides.

Do not install the water heater vent terminator within 1 ft. in the USA of any air intake or building opening, and within 3 ft. in Canada of any air intake or building opening. (Refer to p.14)

3 Ft.

Do not install next to a dryer or any source of airborne debris that can be trapped inside the combustion chamber, unless the system is direct vented.

- 7 -

OUTDOOR INSTALLATION

1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1

Natural Gas, Propane Installation Code in Canada.

2. Install outdoors only in areas with mild, temperate climates.

3. Ensure that the unit is set for outdoor installation. Locate the left bank of dipswitches to

the bottom of the 7-Seg. LED on the computer board. The ‘OUT’ dipswitch on that bank should be switched to its ‘ON’ (right) position (Do not adjust the right bank of dipswitches).

7-Seg LED

Left bank of dipswitches

Right bank of dipswitches

Make sure power to the unit is turned OFF before changing the dipswitch settings.

The dark square is the direction the dipswitch should be set to.

O N

TMP1

TMP2

TMP3

MODE

DIRE

OUT

D-PRT

MST

3

4

1

2

5

6

7

8

Left Bank of Dipswitches

4. The outdoor vent cap must be used when unit is installed outdoor. The manufacturer requires the use of its part No. 9007676005 (TM-VC32).

5. When installed outdoors, the water heater shall be wall-mounted or mounted on a stand.

Locate the water heater in an open, unroofed area and maintain the following minimum clearances:

*

Side 24”

Top 36”

There is a 2” clearance from the left and right sides of the unit to combustible and non-combustible surfaces. However, if any portion or area of the surface is exposed to the exhaust fumes (i.e. directly to the sides of the vent cap), that surface must be at least 24” away.

*

Front 24”

Side 2”

*

Side 24”

Back 1”

Side 2”

Keep the clearances.

Front 4”

(24” Recommended for Maintenance)

- 8 -

Bottom 12”

INDOOR INSTALLATION

1. Follow all local codes, or in the absence of local

Top 12” codes, follow the most recent edition of the

National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1 Natural Gas,

Propane Installation Code in Canada.

2. When installed indoors, the water heater shall be located in an area to maintain the following minimum clearances around the unit:

Back 1”

Side 2”

Side 2”

Keep the following clearances.

Front 4”

(24” Recommended for Maintenance)

Bottom 12”

Combustion Air Supply

The water heater location must provide enough air for proper combustion and ventilation of the surrounding area. See the latest edition of ANSI Standard Z223.1 or any applicable local codes.

In general, these requirements specify that if the unit is installed in a confined space, there must be a permanent air supply opening.

Minimum recommended air supply opening size for water heater:

Water heater size

When drawing make-up air from outside the building

When drawing make-up air from inside the building (from other rooms within)

16.0 Sq. IN

240 Sq. IN

MAX

240,000 BTU/h

When combustion air is supplied

When combustion air is supplied from from outside the building, an inside the building, an opening opening communicating directly communicating with the rest of the with the outside should have a dwelling should have a minimum free minimum free area of one area of one square inch per 1,000 square inch per 15,000 BTUH

BTUH input of the total input rating of input of the total input rating of water heater in the enclosed area. water heater in the enclosed

This opening should never be less area.

than 199 sq. in.

Combustible Air Supplied by Mechanical fan or Make up air device

The water heater is equipped with a combustible air sensor that will shut off the unit when inadequate combustible air supply to unit is detected.

 If a mechanical fan or make up air device is used to supply air to the water heater or utility room, the installer should make sure it does not create drafts which could cause nuisance shutdowns.

 If a blower is necessary to provide adequate combustion air to the water heater, the blower and water heater must be set up so that the water heater cannot fire unless the blower is operating. Possible methods include the use of external flow sensors/transmitters and relays.

- 9 -

DIRECT INTAKE VENT SYSTEM

This water heater may be converted to a direct-vent (sealed combustion) appliance by installing an adapter (Part No. 9007668005 (TM-DV32)) which will bring all required combustible air from outside the building. When installing the direct-vent conversion kit, please follow all instructions included with the kit.

 The water heater must be installed in a location where the proper amount of combustible air will be available to it at all times without obstructions.

 If used as a direct-vent appliance, the water heater requires a 4” combustible air supply pipe. The intake pipe must be sealed airtight.

 Air supply pipe can be made of ABS, PVC, galvanized steel, corrugated aluminum, corrugated stainless steel or Category III stainless steel.

 Change the dipswitch settings to the direct-vent system. (See diagram below)

 Sidewall venting is recommended for the direct-vent system.

 The manufacturer recommends running the exhaust vent and the intake pipe parallel.

 The Direct-Vent Conversion Kit has an “INLET” mark as shown below. Do not

reverse the INLET and the EXHAUST connections when installing vent pipes.

7-Seg LED

Left bank of dipswitches

Right bank of dipswitches

Make sure power to the unit is turned OFF before changing the dipswitch settings.

The dark square is the direction the dipswitch should be set to.

O N

TMP1

TMP2

TMP3

MODE

DIRE

OUT

D-PRT

MST

3

4

5

6

1

2

7

8

Left Bank of Dipswitches

Direct-Vent

Conversion Kit

INLET

EXHAUST

“INLET” mark

DIRECT-VENT

CONVERSION KIT

- 10 -

VENTING INSTRUCTIONS

WARNING: Improper venting of this appliance can result in excessive levels of carbon monoxide which can result in severe personal injury or death.

This water heater must be vented in accordance with the section “Venting of Equipment" of the latest edition of the Natural Fuel Gas Code: ANSI Z223.1, all applicable local building codes, and Section 7 of CAN/CSA B149.1 Natural Gas in Canada, Propane Installation Code in

Canada.

EXHAUST VENT

This is a Category III appliance and must be vented accordingly. The vent system must be sealed airtight. All seams and joints without gaskets must be sealed with high heat resistant silicone sealant or UL listed aluminum adhesive tape having a minimum temperature rating of

350 ºF. For best results, a vent system should be as short and straight as possible.

1.

This water heater is a Category III appliance and must be vented accordingly with any 4” vent approved for use with Category III or Special BH type gas vent.

2.

The manufacturer recommends the NovaVent line. However, the following are also UL listed manufacturers: ProTech Systems Inc. (FasNSeal), Metal-Fab Inc., and Heat-Fab Inc.

(Saf-T Vent).

3.

Follow the vent pipe manufacturer’s instructions when installing the vent pipe.

4. Do not common vent this appliance with any other vented appliance. (Do not terminate vent into a chimney. If the vent must go through the chimney, the vent must run all the way through the chimney with Category III approved or Special BH vent pipe.)

5.

The maximum length of exhaust vent piping must not exceed 50 ft. deducting 5 ft. for each elbow used in the venting system. Do not use more than 5 elbows.

Diameter Max. No. of Elbows Max. Vertical or Horizontal Length

4” 5 Ea. 50 ft

*For each elbow added, deduct 5 ft. from max. vent length.

No. of Elbows Max. Vertical or Horizontal Length

0 50 ft.

1 45 ft.

2 40 ft.

5 25 ft.

6.

When the horizontal vent run exceeds 5 ft., support the vent run at 3 ft. intervals with overhead hangars.

7.

The manufacturer will not be responsible for any damage to the water heater caused by condensation from the vent. Installing a condensate drain is recommended. Please refer to p. 13 for the diagrams.

When installing the vent system, all applicable national and local codes must be followed. If you install thimbles, fire stops or other protective devices and they penetrate any combustible or noncombustible construction, be sure to follow all applicable national and local codes.

- 11 -

VENT TERMINATION

WARNING: Improper installation can cause nausea or asphyxiation, severe injury or death from carbon monoxide and flue gases poisoning. Improper installation will void product warranty.

 The vent termination provides a means of installing vent pipe through the building wall and must be located in accordance with ANSI Z223.1/NFPA 54, or in Canada with CAN/CSA-

B149.1 and local applicable codes.

 A proper sidewall vent termination is recommended when the water heater is vented through a sidewall. If the water heater is converted to a direct-vent unit, a proper sidewall direct-vent termination is to be used.

General rules for venting the water heater are:

1.

Place the water heater as close as possible to the vent termination.

2.

The vent collar of the water heater must be fastened directly to an unobstructed vent pipe.

3.

Do not weld the vent pipe to the water heater collar.

4.

Do not cut the vent collar of the unit.

5.

The weight of the vent stack must not rest on the water heater.

6.

The vent must be easily removable from the top of the water heater for normal service and inspection of the unit.

7.

The water heater vent must not be connected to any other gas appliance or vent stack.

8.

Avoid locating the water heater vent termination near any air intake devices. These fans can pick up the exhaust flue products from the water heater and return them to the building.

This can create a health hazard.

9.

Avoid using an oversized vent pipe or using extremely long runs of the pipe.

10. Locate the vent termination so that it cannot be blocked by any debris, at any time. Most codes require that the termination be at least 12 inches above grade, but the installer may determine if it should be higher depending on the job site condition and applicable codes.

11. For rooftop venting, a rain cap must be installed.

12. The manufacturer recommends the NovaVent line. However, the following are also UL listed manufacturers: ProTech Systems Inc. (FasNSeal), Metal-Fab Inc., and Heat-Fab Inc.

(Saf-TVent).

- 12 -

Horizontal Installation Diagram

Vertical condensation drain

(Install according to local codes)

Backflow preventer

(Recommended for freezing weather conditions: 36 °F and below)

Vertical Installation Diagram

Vertical condensation drain

(Install according to local codes)

Roof

Rain cap

Wall

Sidewall vent termination

Roof flashing

Backflow preventer

(Recommended for freezing weather conditions: 36 °F and below)

 Regarding the clearance from the terminal to the air inlet or opening, refer to the next page.

 Install a condensation drain in the venting.

 Follow the vent manufacturer’s instructions and local codes.

 Do not common vent or connect any vent from other appliances to the water heater vent.

 Use 4” category III approved or Special BH, single or double wall stainless steel vent pipe.

- 13 -

VENT CLEARANCES

Canada U.S.A

Direct vent and other than Direct

Vent

Direct vent Other than Direct Vent

A

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

1 foot 1 foot 1 foot

B

Clearance to window or door that may be opened.

3 feet 1 foot

4 feet from below or side opening. 1 foot from above opening.

* C Clearance to permanently closed window

D

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

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.

J

M

Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other application.

K

Clearance to mechanical air supply inlet.

Clearance above paved sidewalk or

L paved driveway located on public property.

Clearance under veranda, porch deck, or balcony.

3 feet

3 feet

3 feet

6 feet

7 feet

1 foot

*

*

1 foot

3 feet

*

*

*

*

4 feet from below or side opening. 1 foot from above opening.

3 feet

7 feet

*

*For clearances not specified in ANSI Z223.1 / NFPA 54 or CAN/CSA-B149.1, please use clearances in accordance with local installation codes and the requirement of the gas supplier.

- 14 -

GAS SUPPLY AND GAS PIPE SIZING

TO TURN OFF GAS TO APPLIANCE

1. Turn off all electric power to the water heater if service is to be performed.

2. Turn the manual gas valve located on the outside of the unit clockwise

 to the off position.

WARNING: Conversion of this unit from natural gas to propane or vice versa will void all warranty. Contact your local distributor to get the correct unit for your gas type. The manufacturer is not liable for any property and/or personal

damage resulting from gas conversions.

*Check that the type of gas matches the rating plate first.

 The minimum and maximum inlet gas pressures are:

Gas type Inlet gas pressure

Natural Gas

Propane

Min. 5.0” W.C. – Max. 10.5” W.C.

Min. 8.0” W.C. – Max. 14.0” W.C.

 Inlet gas pressures that fall outside the range of values listed above may adversely affect the performance of the water heater. These pressures are measured when the water heater is in full operation.

 Inlet gas pressure must not exceed the above maximum values; gas pressure above the specified range will cause dangerous operating conditions and damage to the unit. Ensure that any and all gas regulators used are operating properly and are providing gas pressures within the specified range shown above.

 Until testing of the main gas line supply pressure is completed, ensure the gas line to the water heater is disconnected to avoid any damage to the water heater.

 

 

 

-Gas connections-

1.

Install a manual gas shutoff valve between the water heater and the gas supply line.

2.

When the gas connections are completed, it is necessary to perform a gas leak test either by applying soapy water to all gas fittings and observing for bubbles or by using a gas leak detection device.



The water heater and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psi

(3.5 kPa).



The water heater 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 1/2 psi (3.5kPa).

3.

Always purge the gas line of any debris and/or water before connecting to the gas inlet.

NOTICE

Size the gas pipe appropriately to supply the necessary volume of gas required for the water heater using ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1 in Canada or local codes. Otherwise, flow capabilities and output temperatures will be limited.

 

- 15 -

Natural Gas Supply Piping

Maximum Delivery Capacity of Cubic Feet of Gas per Hour of IPS Pipe Carrying Natural Gas of 0.60 Specific Gravity

Based on Pressure Drop of 0.5” WC

Based on Energy Content of 1,000 BTU/Cubic Ft.: 710 (T-M32) requires 240 Cubic Ft./hr. Unit: Cubic Feet per Hour

Pipe Size Length

Diameter 10' 20' 30' 40' 50' 60' 70' 80' 90' 100' 150' 200'

¾”

1”

1 ¼”

1 ½”

2”

2 ½”

3”

363 249 200 171

684 470 377 323

152

286

1,404 965 775 663 588

1,445 880

138

259

532

798

127

239

490

734

118

222

456

683

111 104 93 84 72

208 197 174

428 404 358

641 605 536

158

324

486

135

278

416

4,050 2,784 2,235 1,913 1,696 1,536 1,413 1,315 1,234 1,165 1,033 936 801

6,455 4,437 3,563 3,049 2,703 2,449 2,253 2,096 1,966 1,857 1,646 1,492 1,277

11,412 7,843 6,299 5,391 4,778 4,329 3,983 3,705 3,476 3,284 2,910 2,637 2,257

Propane (LP) Gas Supply Piping

Maximum Capacity of Propane (LP) Gas Based on 11” WC supply pressure at a 1.0” WC pressure drop

Pipe Size

¾”

1”

1 ¼”

1 ½”

2”

Unit: kBTU per Hour

Length

10’ 20’ 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’ 150’ 200’

567 393 315 267 237 217 196 185 173 162 146 132 112

1,071 732 590 504 448 409 378 346 322 307 275 252 213

2,205 1,039 913 834 771 724 677 630 567 511 440

3,307 2,299 1,858 1,559 1,417 1,275 1,181 1,086 1,023 976 866 787 675

6,221 4,331 3,465 2,992 2,646 2,394 2,205 2,047 1,921 1,811 1,606 1,496 1,260

Water

Heater

240,000BTU

5’ Length

1-1/4” Pipe Size

A

Gas Sizing Example

(Natural Gas)

10’ Length

3/4” Pipe Size

B

5’ Length

1-1/4” Pipe Size

Gas Meter

10’ Length

1” Pipe Size

10’ Length

3/4” Pipe Size

Furnace

120,000BTU

Dryer

35,000BTU

15’ Length

3/4” Pipe Size

10’ Length

1/2” Pipe Size

15’ Length

1/2” Pipe Size

Range

65,000BTU

Based on Energy Content of 1,000BTU/Cubic Ft:

Divide each appliance’s BTU requirement by 1,000BTU to get the appliances Cubic Ft. requirement.

Take into account the distance the appliance is from the gas meter, look in the above gas chart to properly size the line.

For sections of the gas line supplying gas to more than one appliance (Ex: Point A to Point B), add up the cubic ft. requirements of the appliances that are being supplied by that section, and size to the farthest appliance.

For Example: The section from A to B supplies gas to the furnace, range, and dryer. Adding up the BTU requirements and dividing by 1,000 yields a cubic ft. requirement of 220 cubic ft. of gas. The farthest appliance is the range, which is 50 ft. away from the meter. Looking at the above chart, and under the column of 50ft., Section A to B needs to be 1” in order to supply

220 cubic ft.

- 16 -

-Measuring inlet gas pressure-

1. Turn off all electric power to the water heater if service is to be performed.

2. Turn the manual gas valve located on the outside of the unit clockwise

the off position.

The water heater cannot perform properly without sufficient inlet gas pressure. Below are

 to instructions on how to check the inlet gas pressure. THIS IS ONLY TO BE DONE BY A

LICENSED PROFESSIONAL.

1. Shut off the manual gas valve on the supply gas line.

2. Remove the screw for the pressure port located on the gas inlet of the water heater shown in the diagram to the right.

3. Connect the manometer to the pressure port.

4. Re-open the manual gas valve. Check to see that there are no gas leaks. Open some of the fixtures that use the highest flow rate to turn on the water heater.

5. Check the inlet gas pressure. When the water heater is on maximum burn, the manometer should read from 5.0” to 10.5” WC for Natural gas, from 8.0” to 14.0” WC for Propane.

- 17 -

WATER CONNECTIONS

FOR YOUR SAFETY, READ BEFORE OPERATING:

・

Do not use this water heater if any part has been submersed under water. Immediately call a licensed professional to inspect the water heater and to replace any damaged parts.

・Do not reverse the hot outlet and cold inlet connections to the water heater. This will not activate the water heater.

All pipes, pipe fittings, valves and other components, including soldering materials, must be suitable for potable water systems.

1.

All pipes, pipe fittings, valves and other components, including soldering materials, must be suitable for potable water systems.

2.

A manual shut off valve must be installed on the

As Close as

cold water inlet to the water heater between the main water supply line and the water heater.

Possible

3.

In addition, a manual shut off valve is also recommended on the hot water outlet of the unit.

If the water heater is installed within, or subjected to, a closed loop water system, a thermal expansion tank must be installed.

4. Before installing the water heater, flush the water line to remove all debris, and after installation is complete, purge the air from the line. Failure to

Hot outlet

Cold inlet

Pressure Relief Valve

Gas

do so may cause damage to the heater.

5.

There is a wire mesh filter within the cold inlet to trap debris from entering your heater.

This will need to be cleaned periodically to maintain optimum flow.

PRESSURE RELIEF VALVE

The water heater has a high-temperature shut off switch built in as a standard safety feature

(called a Hi-Limit switch) therefore a “pressure only” relief valve is required.

 This unit does not come with an approved pressure relief valve.

 An approved pressure relief valve must be installed on the hot water outlet.

 The pressure relief valve must conform to ANSI Z21.22 or CAN 1-4.4 and installation must follow local code.

 The discharge capacity must be at least 240,000 BTU/h.

 The pressure relief valve needs to be rated for a maximum of 150 psi.

 The discharge piping for the pressure relief valve must be directed so that the hot water cannot splash on anyone or on nearby equipment.

 Attach the discharge tube to the pressure relief valve and run the end of the tube to within

6" from the floor. This discharge tube must allow free and complete drainage without any restrictions.

 If the pressure relief valve installed on the water heater discharges periodically, this may be due to a defective thermal expansion tank or defective pressure relief valve.

 The pressure relief valve must be manually operated periodically to check for correct operation.

 No valve must be placed between the relief valve and the water heater.

 For the ASME model, the pressure relief valve must conform to and be installed in accordance with ASME code.

- 18 -

ELECTRICAL CONNECTIONS

WARNING: Follow the electrical code requirements of the local authority having jurisdiction. In the absence of such requirements, follow the latest edition of the

National Electrical Code ANSI/NFPA 70 in the U.S. or the latest edition of CSA

C22.1 Canadian Electrical Code, Part 1, in Canada.

CAUTION: When servicing or replacing parts within the water heater, label all wires prior to disconnection to facilitate an easy and error free reconnection. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

1.

The water heater must be electrically grounded. Do not attach the ground wire to either the gas or the water piping.

2.

The water heater requires 120 VAC / 60 Hz electrical power supply that is properly

grounded.

 A proper disconnect (i.e. on/off switch, power plug, etc.) controlling the main power to the water heater must be provided for service reasons. (Must comply with local codes).

 Connect the power supply to the water heater exactly as shown in the wiring diagram;

3.

A green screw is provided in the junction box to ground the connection.

4.

Can be hardwired or wired to a plug-in.

5.

The use of a surge protector is recommended in order to protect the unit from power surges.

Connect Power supply

120 VAC / 60Hz

Ground

- 19 -

REMOTE CONTROLLER CONNECTIONS

1) Disconnect power supply from the water heater.

2) Take off the water heater’s front cover.

3) Please find the remote controller terminals using the diagram below (located around the

lower right-hand side of the water heater).

4) Open the plastic cover of the remote controller, and then attach the two fork terminals to connector base of the backside of the remote controller with two screws. Make sure the terminals are firmly fixed.

5) Put the remote wires through the hole on the bottom of the unit casing.

6) Connect the remote wires to the remote controller terminal properly (No polarity).

*Do NOT jump or short-circuit wires, or computer will be damaged.

7) Replace Front Cover securely.

8) Wires used for the remote controller connection must be:

 Minimum 20 gauge wire (No polarity)

 Maximum 400 feet long

*For details on the connection to the remote controller accessory, refer to the remote controller Installation Manual.

Remote controller terminals of the water heater

Front of remote

RE

PA

NT

Connect to these terminals

Connect to these terminals

- 20 -

Back of remote

PUMP CONTROL CONNECTIONS

The water heater can be used to control a recirculation pump. Proper pump control helps to

preserve the life of the system and saves energy as well.

The water heater pump control port is a “normally-open dry contact”, and therefore needs additional components to properly control a recirculation pump. To control a recirculation pump, connect the pump to the “Pump connector” in the water heater as shown in the diagram below.

(In a multi-unit system, connect the pump ONLY to the “PARENT” unit.) The pump is to be connected using suitable relays shown in the diagram below.

Please make sure the relays are properly rated for the recirculation pump.

Using the water heater’s internal thermistors as a temperature control, the recirculation pump will only turn on when recirculation is needed.

CAUTION: In a multi-unit system, the pump must be connected to the

“Pump” connector in the “PARENT” unit only. If the pump is connected to any of the “CHILD” units, the pump will not work.

These components are NOT included with water heater and are external to the unit.

They must be acquired separately.

Connect to this “Pump connector”.

Power supply for relay

Power supply for pump

120 VAC

220 VAC etc

120 VAC

220 VAC etc for relay

Thermal relay

Recirculation pump

- 21 -

PUMP CONTROL MODE

The water heater provides the four types of the pump control modes. The pump control modes are selected by changing dipswitch settings. The dipswitches are located in the right bank of dipswitches in the upper-left quadrant of the computer board in the water heater. (See the next page)

A) Recirculation Control: No. 6 ON

Feature: Water heaters can provide hot water as soon as possible like a recirculation usage.

Function: The pump is set only to run when the temperature of the water in the re-circulation loop is much lower than the set temperature of the water heater.

The pump will run for about 1 minute in every 30 minutes to determine whether the water temperature in the whole recirculation loop is lower than 9°F from the set temperature or not.

If the water temperature is lower than 9°F from the set temperature, the pump will remain running until the water in the loop reach the set temperature. Otherwise, the pump will stop for another 30 minutes.

If the inlet thermistor of water heaters detects that the water temperature is lower than 9°F from the set temperature before those 30 minutes have elapsed, the pump will activate immediately and remain running until the water in the loop reach the set temperature.

Note: The recirculation pump needs to be connected to the pump terminal of the water heater.

B) Storage Tank Circulation Control: No.7 ON

Feature: This is to ensure a higher rate of recovery for storage tank applications.

Function: The water heater makes Water heaters heat the water 5.4°F higher than its set temperature. The circulation pump (from storage tank to Water heaters) will always remain on. After hot water temperature reach the temperature above, the water heater makes the

Water heaters to adjust the water flow to be less than 2.6 GPM, in order to detect temperature in the system.

Note: In this mode, the water heater will not provide the pump control. The termination of the pump is kept ON position continually.

C) Energy Conserving Recirculation: No.6 and No.7 ON

Feature: Save Energy Mode in Recirculation Control by keeping the water temperature in the loop system hot during circulation with Recirculation Control and Pump Control, so it will cut down the cost of the gas and electricity.

Function: Energy Conserving Recirculation and the Pump Control is similar to the

“Recirculation Control” explained above. The hot water temperature in the loop during recirculation is kept at maximum 122°F (50 °C) even if the set temperature of the water heater is 130°F (55°C) or above.

Note: The recirculation pump needs to be connected to the pump terminal of the water heater.

- 22 -

D) Normal Control (Default setting): No.6 and No.7 OFF:

Feature: This mode provides no special pump control. The pump operation can only be turned ON and OFF by the remote controller.

Function: If a pump is connected to the pump control terminal and both No.6 and No.7 are

OFF, the pump will be made to run all the time as long as there is a power supply to the water heater. The pump will stop when the remote controller is turned off. Water in the loop will be maintained at set temperature.

Dipswitch settings for the Pump control mode

Right bank of dipswitches

A) Recirculation

Control

B) Storage Tank

Circulation

Control

C) Energy

Conserving

Recirculation

D) Normal

Control

(Default)

The dark squares indicate the direction the dipswitches should be set to.

- 23 -

EASY-LINK SYSTEM

The water heater can be connected with other heaters of the same model with communication cables to work as a multiple manifold system.

 The Easy-Link system can connect up to 4 units.

 A communication cable (gray color) comes with each unit. The cables use 18 gage wire and can be up to 250ft. long all together.

You can manifold from 2 units to 4 units without a multi-system controller. A 4-unit system has full automatic modulation between 24,000 BTU/h and 960,000 BTU/h.

Gas

Cold

Hot

CAUTION

 The Easy-Link system is limited to 4 units. If you connect more than 4 units, the first 4 units will work as part of the Easy-Link system, but the other additional units will only work as individual units.

 The water heater cannot be linked with other different models in the

Easy-Link system.

7-Seg LED

Left bank of dipswitches

Right bank of dipswitches

Do not touch the Multi-unit

System connectors.

Easy-Link connectors are on each unit’s computer board.

To change the dipswitch settings for the Easy-Link system, locate the left bank of dipswitches below the 7seg LED.

Do not adjust the right

bank of dipswitches.

- 24 -

Easy-Link Connection Procedures

1. Choose one of your units as the “PARENT” unit.

2. “The PARENT”

Locate the left bank of dipswitches to the lower of the 7-seg. LED on the computer board of the unit that you select to be the “PARENT” unit. Change dipswitch No. 8 to “ON”. Do not change any of the dipswitches on the “CHILD” units.

3. Between the “PARENT” and the “CHILD-1”

Connect the “PARENT” connector of the “PARENT” unit to the

“

[1]

”

connector of the “CHILD-

1” unit.

4. Between the “CHILD-1” and the “CHILD-2”

Connect the

“

[2]

” connector of the “CHILD-1” unit to the

“

[1]

” connector of the “CHILD-2” unit.

5. Between the “CHILD-2” and the “CHILD-3”

Connect the

“

[2]

”

connector of the “CHILD-2” unit to the

“

[1]

”

connector of the “CHILD-3” unit.

6. Make sure the “7-seg LED” of all the units’ computer boards display the unit #. The numbering system automatically allocates the unit # to each water heater in the Easy-Link system, in accordance with the table below.

PARENT unit

CHILD units

Unit # : 1

Unit# : 2, 3 and 4

The dark squares indicate the direction the dipswitches should be set to.

PARENT unit

C o n n e c t o r s

CHILD-1 unit

C o n n e c t o r s

CHILD-2 unit

C o n n e c t o r s

CHILD-3 unit

C o n n e c t o r s

Left bank of

Dipswitches

Communication cable

Left bank of

Dipswitches

Left bank of

Dipswitches

Left bank of

Dipswitches

CAUTION

 Unless you change dipswitch No. 8 of the “PARENT” unit to “ON”, the system will not

work as an Easy-Link system. The units will work as individual units.

PARENT unit

C o n n e c t o r s

CHILD-1 unit

C o n n e c t o r s

Wrong dipswitch setting on the “PARENT” unit

Left bank of

Dipswitches

Left bank of

Dipswitches

Communication cable

- 25 -

CAUTION

 If you connect the

“

[1] (or [2])

” connector of the “PARENT” unit to the

“

PARENT (or [1])

” connector of the “CHILD-1” unit, the system will not work as the easy-link system. The units will work as individual units.

PARENT unit

C o n n e c t o r s

Left bank of

Dipswitches

Communication cable

PARENT unit

C o n n e c t o r s

CHILD-1 unit

C o n n e c t o r s

Left bank of

Dipswitches

CHILD-1 unit

C o n n e c t o r s

Wrong connection between the

“

PARENT

” unit and the

“

CHILD-1

” unit

Left bank of

Dipswitches

Left bank of

Dipswitches

Communication cable

 If a remote controller (optional) is used, it has to be connected to the “PARENT” unit. If the remote controller is connected to a “CHILD” unit, it will only control that particular individual

“CHILD” unit and will not control the Easy-Link system as a whole.

Wrong connection between the

“

CHILD

” unit and the remote controller

PARENT unit

C o n n e c t o r s

Left bank of

Dipswitches

CHILD unit

C o n n e c t o r s

Left bank of

Dipswitches

Remote controller

T M - R E 3 0

o r

T M - R E 1 0

Communication cable







The remote controller is not required for the Easy-Link system.

If running the Easy-Link system without the remote controller, please make sure the dipswitch settings for the temperature, outdoor, and direct-vent settings on ALL the units are set to the same settings. Otherwise, the units may not operate properly.

If the remote controller is used, the temperature on all the units in the system will automatically be set to the same temperature that is set on the remote. However, even with the remote, the outdoor and direct-vent dipswitch settings still need to be set to the same settings on all the units.

- 26 -

CAUTION

 If you connect the “PARENT” connector of the “PARENT” unit to the “[3]” connector of the “CHILD-1” unit, the

“PARENT” unit and the “CHILD-1”unit will display “761” error code.

 If you connect the “[2]” connector of the “CHILD-1”unit to the “[3]” connector of the “CHILD-2” unit, the

“PARENT” unit and the “CHILD-2”unit will display “761” error code.

PARENT unit

C o n n e c t o r s

Left bank of

Dipswitches

PARENT unit

C o n n e c t o r s

Left bank of

Dipswitches

Communication cable

“

Wrong connection between the

PARENT

CHILD-1 unit

C o n n e c t o r s

Left bank of

Dipswitches

” unit and the

CHILD-1 unit

C o n n e c t o r s

Left bank of

Dipswitches

CHILD-2 unit

C o n n e c t o r s

Left bank of

Dipswitches

“

CHILD-1

”

unit

Communication cable

Wrong connection between the

“

CHILD-1

”

unit and the

“

CHILD-2

” unit

 If you connect the

“

PARENT

”

connector of the “CHILD-1” unit to the

“

[1]

”

connector of the

“CHILD-2” unit, the “CHILD-2” unit will work as an individual unit, and will not be part of the

Easy-Link system.

Wrong connection between the

“

CHILD-1

” unit and the

“

CHILD-2

”

unit

PARENT unit

C o n n e c t o r s

CHILD-1 unit

C o n n e c t o r s

CHILD-2 unit

C o n n e c t o r s

Left bank of

Dipswitches

Left bank of

Dipswitches

Left bank of

Dipswitches

Communication cable

WARNING

Connecting two “PARENT” connectors together from two separate units may

damage the computer board. The communication cable has a female end and a male end so it’s impossible to have a PARENT -to- PARENT connection with the communication cable. Do not splice or modify connectors.

Prohibited

- 27 -

MULTI-UNIT SYSTEM FOR LARGE VOLUMES

Multiple 710 (T-M32) models can be combined for a Multi-Unit system, along with the Multiple

Unit Controller and Remote Controller (Parts 9007675005 (TM-MC01) and 9007603005 (TM-

RE30)). Each set of controllers (one 9007675005 (TM-MC01) and one 9007603005 (TM-

RE30)) can control from 2 units to 20 units for commercial or residential applications. For a 20unit system, the computer can modulate between the usages of 24,000 BTU/h to 4.8 Million

BTU/h.

710

9007675005

(TM-MC01)

(T-M32)

T-M32

Cold IN

Hot Out

An individual cut-off switch if hard-wired is recommended for each unit in a multi-unit system for the purpose of maintenance.

Multi-Unit System Connection Diagram

Multi-Unit Controller (9007675005 (TM-MC01)) and Temperature Remote Controller

(9007603005 (TM-RE30)) wiring:

Unit 1 Unit 2 Unit 3

C o n n e c t o r s C o n n e c t o r s

C o n n e c t o r s

Left bank of

Dipswitches

Left bank of

Dipswitches

Left bank of

Dipswitches

Communication cable

The dark squares indicate the direction the dipswitches should be set to.

This is the connection diagram between 710

(T-M32) and 9007675005 (TM-MC01) for 2 to

20 water heaters. As shown is a sample for 3 water heaters.

9007603005

T M - R E 1 0

(TM-MC01)

Make sure the “7-seg LED” of all the units’ computer boards display the unit #. The Multi-unit controller automatically allocates the unit # (1-20) to each water heater that is part of the Multi-unit system.

Terminals for

Water heaters

- 28 -

In a Multi-Unit system, connect the

“

[3]

”

connector and the

“

[4]

”

connector with the communication cable.

Wire

[3]

(Male Adapter) and

(Female Adapter)

[4]

The Comunication Cables are included with the 710 (T-M32). The Cables use 18 gage wire and can be up to 250 ft. long.

Please refer to the Multi-unit Controller manual for further instructions of the Multi-Unit system.

7-Seg LED

Left bank of dipswitches

Right bank of dipswitches

Multi-unit connectors are on each unit’s computer board.

Do not touch the Easy-Link connectors.

- 29 -

INITIAL OPERATION

FOR YOUR SAFETY, READ BEFORE OPERATING:

 Check the GAS and WATER CONNECTIONS for leaks before firing it for the first time.

 Open the main gas supply valve to the unit using only your hand to avoid any spark.

Never use tools. If the knob will not turn by hand, do not try to force it; call a qualified service technician. Forced repair may result in a fire or explosion due to gas leaks.

 Be sure to check next to the bottom of the unit because some gases are heavier than air and may settle towards the floor.

 Check the GAS PRESSURE. Refer to p.15.

 Do not try to light the burner manually. It is equipped with an electronic ignition device which automatically lights the burner.

 Check for PROPER VENTING and COMBUSTIBLE AIR to the heater.

 Purge the GAS and WATER LINES to remove any air pocket.

 Do not use this water heater if any part has been submersed under water. Immediately call a qualified service technician to inspect the water heater and to replace any damaged parts.

CAUTION: IF YOU SMELL GAS:

 Do not try to start the water heater.

 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 supplier’s instructions.



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

1. Once the above checks have been completed, please clean filter of any

2. Fully open the manual 3. Open a hot water tap to water control valve on the water supply line. verify that water is flowing to that tap. debris. Refer to p. 35 for instructions.

Then close the hot water tap.

4. Fully open the manual 5. Turn on the 120 volt 60 Hz gas control valve power supply to the water installed. heater.

6. Now you are ready to enjoy hours of endless hot water.

- 30 -

NORMAL OPERATION

 Flow rate to activate the 710 (T-M32) :

0.5 gallon per minute

 Flow rate to keep the 710 (T-M32) running : 0.4 gallon per minute

1. NORMAL OPERATION

WITHOUT REMOTE CONTROLLER

1. Open a hot water tap.* 2. Mix cold water with the hot to get the correct temperature water.

3. Close the hot water tap.

*If a remote controller installed, turn the remote controller ON by pressing the power ON/OFF button on the remote controller and then set the temperature by pressing the HOT/COLD buttons before opening a hot water tap. The temperature is displayed when the remote controller is turned ON.

2. NORMAL OPERATION

WITH REMOTE CONTROLLER INSTALLED: 9007603005 (TM-RE30) (Optional)

1. Press the power ON/OFF button. 2. Set temperature. (Example 110°F)

When ON, green LED is lit.

The temperature and the time will be displayed on the remote controller.

Temperatures available under the Default Mode

100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175

Temperatures available under the High Temperature Mode

110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185

(unit:°F)

DO NOT set to 185°F if you use your water heater in recirculation system. Refer to p.34

3. Open a hot water tap.

Mix cold water with the hot if you need.

4. Close the hot water tap.

WARNING

Hot Water temperatures over 125

F (52ºC) can cause severe burns instantly or death from scalding.

 The outlet hot water temperature of the water heater is factory set at 120

F (49ºC).

 Feel the water temperature before bathing or showering.

- 31 -

*To change the remote controller’s mode from Default Mode to High Temperature Mode, please follow the procedures below (the remote controller must be installed prior to operating these procedures):

DO NOT set to 185ºF if you use your water heater in a recirculation system.

This will cause damage to the heater and void the warranty.

1. Turn off power to the remote controller by pressing the “ON/OFF" button.

Lamp is OFF to indicate that power is off

2. Simultaneously press and hold both the “HOT” and “COLD” buttons for at least five seconds.

And then make sure “1” (or “0”) is displayed on remote controller.

“1” is displayed for single units “0” is displayed for Easy-Link / Multi-unit Systems

3. Press the “TIME” button.

Make sure OFF and F1 are displayed on remote controller.

4. Press the “INFO” button. After, make sure “OFF” blinks.

Blink

5. Press the “HOT” button or the “COLD” button to set display to “on”.

Blink

6. Simultaneously press both the “BUZZER” button and the “INFO” button to fix the setting.

7. Make sure display is no longer blinking.

Not blinking

8. Press the “ON/OFF” button to finish the setting.

9. Turn on power to the remote controller by pressing the “ON/OFF” button again.

Lamp is ON

- 32 -

FLOW

 The flow rate through the water heater is limited to a maximum of 9.0 GPM.

 The temperature setting, along with the supply temperature of the water will determine the flow rate output of the unit.

 Please refer to the temperature vs. gallons per minute chart on p. 50 to determine the likely flow rates based on your local ground water temperature and your desired outlet water temperature combination.

 Based on the United States Department of

Energy method of testing water heater output, the water heater is rated for 300 gallons per hour (GPH) or 5.0 gallons per minute (GPM) for Natural Gas, and 318 GPH or 5.3 GPM for

Liquid Propane, when raising the water temperature by 77

F (from 58 F to 135 F).

 Refer to the chart on the right for typical household plumbing fixture flow rates to determine what the water heater can do in a household application.

Household Flow Rates

Appliance / Use

Lavatory Faucet

Bath Tub

Shower

Kitchen Sink

Dishwasher

Washing Machine

Taken from UPC 2006

Flow Rate (GPM)

1.0

4.0 – 10.0

2.0

1.5

1.5

4.0

FREEZE PROTECTION SYSTEM

 This unit comes equipped with heating blocks to protect it against damages associated with freezing.

 For this freeze protection system to operate, there has to be electrical power to the unit.

Damage to the heat exchanger caused by freezing temperatures due to power loss is not covered under the warranty. In cases where power losses can occur, consider the use of a backup power supply.

 The freeze protection system will activate when the surrounding and/or outside temperatures drop below 36.5 °F (2.5 °C).

 In any areas subject to freezing temperatures, the manufacturer highly recommends installing the unit indoors. In such an installation, freezing issues can only occur if cold air enters through the venting into the heat exchanger, whether by negative pressures within the installation location or by strong outside winds. It is the installer’s responsibility to be aware of these issues and take all preventative measures. The manufacturer will not be responsible for any damage to the heat exchanger as a result of freezing.

 The manufacturer also highly recommends the use of a backflow preventer (sold separately) to minimize the amount of cold air entering through the exhaust venting when the water heater is off.

 If you will not be using your heater for a long period of time:

1. Completely drain the water out of the unit. Refer to p. 35.

2. Disconnect power to your heater.

This will keep your unit from freezing and being damaged.

CAUTION: Only pipes within the water heater are protected by the freeze protection system.

Any water pipes (hot or cold) located outside the unit will not be protected. Properly protect and insulate these pipes from freezing.

- 33 -

TEMPERATURE SETTINGS

 There are 8 preset temperatures that you can select from by changing the dipswitch settings on the computer board.

 The temperature has been preset at the factory to 120ºF (49ºC).

 If you desire to change the set temperature with dipswitches, please refer to the diagram on below. These temperatures are available: 100ºF, 115ºF, 120ºF, 135ºF, 145ºF, 155ºF, 165ºF, and 185ºF.

 If you desire a hot water temperature other than the 8 preset settings, please purchase the optional temperature remote controller (part No. 9007603005 (TM-RE30)).

 With this optional remote controller you can set the temperature from 100ºF to 185ºF with various increments.

 Please read the instructions carefully prior to installing the remote controller, as failure to do so could damage the temperature controller and/or the water heater, which will void the warranty.

7-Seg LED

 Turn off the power supply to the heater before changing the dipswitch

settings.

 Only change the switches with the dark squares. The dark squares indicate

which direction the dipswitch should be set to.

 DO NOT set to 185 ºF if you use your water heater in a recirculation system.

This will cause damage to the heater and void the warranty.

Left bank of dipswitches

To change dipswitch settings for temperatures, locate the left bank of dipswitches the lower of

7-Seg LED.

DO NOT adjust the right bank of dipswitches.

Right bank of dipswitches

The dark squares indicate the direction the dipswitches should be set to.

Left bank of Dipswitch

(49

(38

TMP1

TMP2

TMP3

MODE

DIRE

O U T

D-PRT

M S T

N O

(46

TMP1

TMP2

TMP3

MODE

DIRE

O U T

D-PRT

M S T

N O

TMP1

TMP2

TMP3

MODE

DIRE

O U T

D-PRT

M S T

N O

(57

TMP1

TMP2

TMP3

MODE

DIRE

O U T

D-PRT

M S T

N O

(63

TMP1

TMP2

TMP3

MODE

DIRE

O U T

D-PRT

M S T

N O

(68

TMP1

TMP2

TMP3

MODE

DIRE

O U T

D-PRT

M S T

N O

(74

TMP1

TMP2

TMP3

MODE

DIRE

O U T

D-PRT

M S T

N O

(85

TMP1

TMP2

TMP3

MODE

DIRE

O U T

D-PRT

M S T

N O

- 34 -

MAINTENANCE AND SERVICE

WARNING: Turn off the electrical power supply and close the manual gas

control valve and the manual water control valve before servicing.

 Clean the cold-water inlet filter. (Refer to diagram below)

 Be sure that all openings for combustion and ventilation air are not blocked.

 The venting system should be checked annually for any leaks, corrosion, blockages or damage.

 The burner should be checked annually for dust, lint, grease or dirt.

 Keep the area around the water heater clear. Remove any combustible materials, gasoline or any flammable vapors and liquids.

 In accordance with all local codes and common safety practices, Water discharged from the pressure relief vale can cause severe burns instantly from scalding. DO NOT touch the pressure relief valve.

 If the relief valve discharges periodically, it may be due to thermal expansion in a closed water supply system. Contact the water supplier or local plumbing inspector on how to

  correct this situation.

 Visual check of burner flames (see below) through the burner window in the burner assembly located at the middle of the water heater.

 

 

 

 

 

Blue flame

Satisfactory

Flame blowing up

Unsatisfactory

Red or Yellow flame

Unsatisfactory

The manufacturer recommends having the unit checked once a year or as necessary by a licensed technician. If repairs are needed, any repairs should be done by a licensed technician.

UNIT DRAINING and FILTER CLEANING

1. Close the manual gas shut off valve.

2. Turn off power to the unit, and then turn on again.

3. Wait 30 seconds, and then turn off power to the unit, yet again.

4. Close the water shut off valve.

5. Open all hot water taps in the house. When the residual water flow has ceased, close all hot water taps.

6. Have a bucket or pan to catch the water from the unit’s drain plugs. Unscrew the drain plugs to drain all the water out of the unit.

7. Wait a few minutes to ensure all water has completely drained from unit.

8. Clean the filter: Check the water filter located within the cold inlet. With a tiny brush, clean the water filter of any debris which may have accumulated and reinsert the filter back into the cold water inlet.

9. Securely screw the drain plugs back into place.

Hand- tighten only.

Drain Plug

Water Valve

Drain Plug with Filter

Gas Valve

- 35 -

GENERAL TROUBLESHOOTING

~ TEMPERATURE and AMOUNT OF HOT WATER ~

It takes long time to get hot water at the fixtures.

The water is not hot enough.

The water is too hot.

The hot water is not available when a fixture is opened.

The hot water gets cold and stays cold.

Fluctuation in hot water temperature.

 The time it takes to deliver hot water from the water heater to your fixtures depends on the length of piping between the two. The longer the distance or the bigger the pipes, the longer it will take to get hot water.

 If you would like to receive hot water to your fixtures quicker, you may want to consider a hot water recirculation system. (p. 41)

 Compare the flow and temperature. See the chart on p. 50.

 Check cross plumbing between cold water lines and hot water lines.

 Is the gas supply valve fully open? (p. 30)

 Is the gas line sized properly? (p. 16)

 Is the gas supply pressure enough? (p. 15)

 Is the set temperature set too low? (p. 31,34)

 Is the set temperature set too high? (p. 31,34)

 Make sure the unit has 120 VAC / 60Hz power supply.

 If you are using the remote controller, is the power button turned on? (p. 31)

 Is the gas supply valve fully open? (p. 30)

 Is the water supply valve fully open? (p. 30)

 Is the filter on cold water inlet clean? (p. 35)

 Is the hot water fixture sufficiently open to draw at least 0.5 GPM through the water heater? (p. 31)

 Is the unit frozen?

 Is there enough gas in the tank? (for LP)

 Is the flow rate enough to keep the water heater running? (p. 31)

 If there is a recirculation system installed, does the recirculation line have enough check valves?

 Is the gas supply valve fully open? (p. 30)

 Is the filter on cold water inlet clean? (p. 35)

 Are the fixtures clean of debris and obstructions?

 Is the filter on cold water inlet clean? (p. 35)

 Is the gas line sized properly? (p. 16)

 Is the supply gas pressure enough? (p. 15)

 Check for cross connection between cold water lines and hot water lines.

- 36 -

~ WATER HEATER ~

Unit does not ignite when water goes through the unit.

 Is the flow rate over 0.5 GPM? (p. 31)

 Check for the filter on cold water inlet. (p. 35)

 Check for reverse connection and cross connection.

 If you use the remote controller, is the power button turned on? (p. 31)

The fan motor is still spinning after operation has stopped.

 This is normal. After operation has stopped, the fan motor keeps running for 35 seconds in order to reignite quickly, as well as push all exhaust gas out of the flue.

Abnormal sounds come from the unit.

 Contact the manufacturer at 1-877-737-2840.

~ REMOTE CONTROLLER: 9007603005

(TM-RE30) (OPTIONAL) ~

Remote controller does not display anything when the power button is turned on.

An ERROR code is displayed.

Press the ON/OFF button.

If the lamp lights up ⇒

 This is normal. When the unit has not operated for five minutes or more, the display turns off to converse energy.

If the lamp does not light ⇒

 Make sure the unit has power supply.

 Make sure the connection to the unit is correct.(p. 20)

 Please see the p. 38.

~ EASY-LINK SYSTEM ~

How are the unit numbers assigned?

 For an Easy-Link system, other than the Parent unit

(which is always labeled #1), all the other units (the

Child units) are numbered randomly.

 To check which numbers are assigned to which units, push the button on the computer board of a unit as shown below. The unit number will be displayed on the 7-Seg LED.

7-Seg LED

Button to check unit numbers

- 37 -

TROUBLESHOOTING – ERROR CODES



The units are self diagnostic for safety and convenience when trouble shooting.



If there is a problem with the installation or the unit, it will display a numerical error code on the remote controller (if installed) or on the 7-Seg LED of the central computer board and section computer board to communicate the source of the problem.



Consult the following chart for the cause of each error code.

7-Seg LED

Remote controller (Optional)

Error

Code

031

Incorrect dipswitch setting

391

Air-fuel Ratio Rod failure

101

111

121

Warning for 991 error code

Ignition failure

Loss of flame

441

510

551

Flow Sensor Failure

Abnormal Main Gas

Valve

Abnormal Gas Solenoid

Valve

311

321

331

Malfunction description

Output thermistor failure

Inlet thermistor failure

Mixing thermistor failure

“232”

Remote

Controller

Error

Code

611 Fan Motor Fault

631 Abnormal External Pump

651

Water Control Valve Fault

(Flow Adjustment function)

Single Unit



The 7-Seg LED displays the 3-digit error codes one digit at a time. The remote controller (if installed) displays the whole 3-digit error code at once.

Example:

If your unit has the “321” error code (inlet thermistor),



The 7-Seg LED, will flash the 3-digit error code one digit at a time. The 7-Seg LED will display “3”...



“2”... “1”, and then repeat the 3 digits.

The remote controller, however, will display “321” on its screen, in its entirety.

Unit #1

PARENT

“3..2..1..0..2”

Unit #2

CHILD

“3..2..1”

Unit #3

CHILD

Unit #4

CHILD

Malfunction

description

Error

Code

661

701

721

741

761

991

Malfunction

description

Water Control Valve Fault

(Bypass function)

Computer board Fault

False Flame Detection

Miscommunication between water heater and remote controller

Miscommunication in Easy- link OR Multi-unit system

Imperfect combustion

Easy-Link



The 7-Seg LED on the PARENT unit displays a 5-digit number to signify which unit in the Easy-Link system has the error, and what the error code is. The 7-Seg

LED displays the number one digit at a time.



The remote controller (if installed) displays a 3-digit number which also signifies which unit has the error, and what the error code is.



The unit that has the error in an Easy-Link system will display the error code on its 7-Seg LED in exactly the same way as if it were only a Single Unit.

Example:

If Unit #2 has the “321” error code (inlet thermistor),



The 7-Seg LED on the PARENT unit will display “3”...

“2”… “1”… “0”… “2”, displaying only one digit at a time. The first 3 numbers indicate the error code.

The last two numbers indicate that Unit #2 has the error.



The remote controller, however, will display “232” on its screen in its entirety. The first “2” indicates that

Unit #2 has the error. The “32” indicates the first two digits of the “321” error code.



The 7-Seg LED on Unit #2 will display “3”…. “2”…. “1”, just like in the Single Unit example.

- 38 -

OPERATING SAFETY

FOR YOUR SAFETY READ BEFORE OPERATING

WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

A. This water heater does not have a pilot. It is equipped with an ignition device that automatically lights the burner. Do not try to light the burner by hand.

B. BEFORE OPERATING smell all around the water heater area for evidence of leaking gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS.

 Do not try to light any appliance.

 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 supplier's instructions.

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

C. Use only your hand to turn the gas valve knob. Never use tools. If the knob will not turn by hand, don't try to repair it. Call a qualified service technician. Forced or attempted repair may result in a fire of explosion.

D. Do not use this water heater if any part has been under water. Immediately call a qualified service technician to inspect the water heater and to replace any damaged parts.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above or in the Owners Manual.

2. Turn off all electric power to the water heater.

3. Do not attempt to light the burner by hand.

4. Turn the manual gas valve located on the outside of the unit clockwise

↻ to the off position.

5. Wait five (5) minutes to clear out any gas. If you then smell gas. STOP! Follow "B" in the safety information above on this label. If you don't smell gas, go to next step.

6. Turn the manual gas valve located on the outside of the unit counter clockwise

↺ to the ON position.

7. Turn on all electrical power to the water heater.

8. If the water heater will not operate, follow the instructions “to Turn Off Gas to water heater" and Call your service technician or gas supplier.

TO TURN OFF GAS TO APPLIANCE

1. Turn off all electric power to the water heater if service is to be performed.

2. Turn the manual gas valve located on the outside of the unit clockwise

↻ to the off position.

- 39 -

DANGER

Vapors from flammable liquids will explode and catch fire causing death or severe burns.

Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near the water heater.

Keep flammable products:

1. Far away from heater

4. Out of children's reach

Vapors:

1. Cannot be seen

2. Vapors are heavier than air

3. Go a long way on the floor

4. Can be carried from other rooms to the main burner by air currents

WARNING: Do not install water heater where flammable products will be stored.

Read and follow water heater warnings and instructions. If owner’s manual is missing, contact the retailer or manufacturer.

WARNING

The outlet hot water temperature of the water heater is factory set at 120 ºF (49ºC).

Use this heater at your own risk. The set outlet water temperature can cause severe burns instantly or death from scalds. Test the water before bathing or showering.

Do not leave children or an infirm person in the bath unsupervised.

DANGER

Hot Water Heater temperature over 125 ºF (52ºC) can cause severe burns instantly or death from scalding. Children, disabled and elderly are at the highest risk of being scalded. Feel water temperature before bathing or showering. Temperature limiting valves are available. Ask a professional person.

WARNING: California Proposition 65 lists chemical substances known to the state to cause cancer, birth defects, death, serious illness or other reproductive harm. This product may contain such substances, be their origin from fuel combustion (gas, oil) or components of the product itself.

- 40 -

APPLICATIONS

Space Heating Applications

WARNING

 In order  to purge air in water pipes within a closed-loop system, an air vent and

air separator   should be installed in to the system. Required circulation flow rates are labeled next to each application diagram. These

  flow rate requirements must

be followed.

 Toxic chemicals used in boiler treatments such as alcohol, glycerol and glycol groups must not be introduced into the system if the system incorporates an open-loop potable water system.

 Toxic chemicals used in boiler treatments such as alcohol, glycerol and glycol group must not be introduced into the system when used for open loop potable water and space heating.

 The water heater can be used to supply potable water and space heating and shall not be connected to any heating system or component(s) previously used with non-potable water where any chemicals were added to the water heating appliances.

 When the system requires water for space heating at temperatures higher than required for other uses, a means such as a mixing valve shall be installed to temper the water for those other uses in order to reduce scald hazard potential. scalds.

 Chemicals such as diluted Glycol can be used for radiant floor, Hydro/fan coil air or

Baseboard heating only. The diluted solution of glycol must contain between 25 and

55% of Glycol. Be aware that in closed-loop glycol systems, low pressure in the heat exchanger can cause low-temperature boiling, resulting in excessive noise and damage to the water heater. Consult with the glycol maker for specifications prior to use.

Re-circulation:

* The recirculation pump is to be controlled by: 

‐Dual‐set aquastat (recommended w/timer) 

OR 

 

‐“Pump Control Connections”. Refer to p.21. 

* The recirculation pump is to provide no less  than 2 GPM and no more than 4 GPM through  each activated unit in the system. 

Hot water outlet to  fixtures

Recirculation  pump 

S

Air  separator

Air Vent

Check valve

This is a concept drawing only.

Check valve

Hot

Water

Outlet

Cold

Water

Inlet

Gas

Inlet

Unions 

Ball valves 

Gas supply 

Expansion tank 

Cold water  inlet 

Y‐Strainer 

- 41 -

Dual-purpose hot water heating (Domestic and Space Heating):

Diagramatic Layout of Radiant Heating and

Domestic Water Heater Per Mass. Code

Shut-Off

Valve

Cold Inlet

Check Valve Will

Have 1/8" Hole in

Check, As Per

Mass. Code

Model Used

Apply Correct

Thermal

Expansion

Tank-Size Per

Application

Pressure

Gauge

Atmospheric

Vacuum Breaker

4" Gas Exhaust Vent (Discharge

Must Comply with Local and

State Codes). Can Not Be

Common Vented with Other

Appliances

Thermostatic Mixing Valve

Tempered

Water To

House

Thermometer

P

Takagi

Thermometer

Heating Coil

(used with air-handler)

**Maximum allowable distance of

50-Ft. from water heater and heating panel

Shut-Off

Valves

T

Check

Valves

Check Valve

Drain

Plug

Hot

Water

Outlet

Cold

Water

Inlet

Water

Filter

Gas

Inlet

Unions

120 VAC Switch or Outlet

Pump (Must Be Sized Properly

With Each Application). Pump

Shall Run 60 Seconds Every 6

Hours

T-Handle Gas

Shut-Off Valve

* The circulation pump is to provide no less than 2 GPM and no more than 4 GPM through each activated 

unit in the system. 

Priority Control Devices such as a flow switch, an Aquastat or other electronic controller can be used to prioritize the domestic water system over the heating system.

Warning: Follow all local codes, or in the absence of local codes, follow the most recent edition of the

National Standard Code, ANSI Z21.10.3.

Warning: This illustration is a concept design only. The reference to the 1/8 th

hole in check is only for the State of Massachusetts. There are a wide variety of variations to the application of controls and equipment presented. Designers must add all necessary safety and auxiliary equipment to conform to code requirements and design practice. For more details, contact the manufacturer.

- 42 -

ADDITIONAL CLEARANCES

Please follow all local and national codes in regards to proper termination clearances. In the absence of such codes, the following clearances can be used as guidelines. Local codes supersede these guidelines.

For sidewall terminations

1ft.

1ft.

Inside corner

Exhaust termination

For multiple sidewall exhaust terminations (e.g. multi-unit systems), an exhaust termination must be at least 1 ft. away from another exhaust termination. An exhaust termination must also be at least 2 ft. away from an inside corner (if the adjacent wall is less than 2 ft. of length, the minimum required distance away from the inside corner will be equal to the length of the wall).

2ft.

2ft.

2ft.

3ft.

3ft.

3ft.

1ft.

1ft.

Air supply inlet

For direct-vent sidewall terminations that use two separate penetrations for the intake and exhaust, distance the intake and exhaust terminations at least 3 ft. away from each other, no matter the orientation.

Inside corner

Direct vent termination

For multiple-unit, direct-vent sidewall terminations that combine the intake and exhaust into a single penetration, space each direct-vent termination at least 1 ft. away from each other, no matter the orientation. A direct-vent termination must also be at least 2 ft. away from an inside corner (if the adjacent wall is less than 2 ft. of length, the minimum required distance away from the inside corner will be equal to the length of the wall).

For rooftop terminations

A

A

A

2ft.

A

A

Exhaust termination

Exhaust and/or direct-vent sidewall terminations should be at least 2 ft. away from an opposite surface/wall. Do not place the termination directly in front of an opening into a building.

Air intake

Exhaust termination

A: in accordance with local codes

Exhaust termination

Air intake

For multiple-unit rooftop terminations (whether for standard indoor or directvent installations) space all exhaust and intake terminations in accordance with local codes. An exhaust termination must be spaced from a wall or surface in accordance with local codes as well. In the absence of such a code, an exhaust termination must be a horizontal distance of at least 2 ft. away from a wall or surface.

- 43 -

OPTIONAL ITEMS

1. Temperature remote controller: 9007603005

(TM-RE30)

The temperature remote controller has two functions. It allows the output temperature from the water heater to be adjusted within the range of 100 °F to 185 °F, and it also works as a diagnostic tool that will give a concise error code whenever there is a problem with the unit. The temperature options are

100 °F, 105 °F, 110 °F, 115 °F, 120 °F, 125 °F, 130 °F,

135 °F, 140 °F, 145 °F, 150 °F, 155 °F, 160 °F, 165 °F,

170 °F, 175 °F, 180 °F and 185 °F. See the troubleshooting section for information on possible error codes.

2. Multi-unit controller: 9007675005

(TM-MC01)

The multi-unit controller can control a maximum of 20 water heaters, from 24,000 BTU to 4,800,000

BTU. It also works as a diagnostic tool that will give a concise error code whenever there is a problem with the unit. Usage of this controller requires having the

9007603005 (TM-RE30) remote controller.

3. 4” Backflow preventer and F-F adaptor: 4. Vent cap: 9007676005 (TM-VC32)

9007996005

There are two functions available for this adaptor which can be connected installation with the 710 (T-M32) with the water heater and NovaVent venting line and prevents the water heater. The cap is installed on the top of the unit, backflow of air through the exhaust vent. This helps prevent harmful instead of connecting an exhaust vent pipe. The cap will exhaust gases from entering the prevent any debris that might be in the environment home, as well as helping to prevent from entering the unit and causing damage or a fire the unit from freezing in areas where cold air can be blown or drawn into the exhaust hazard, as well as preventing rain or other weather from entering the unit. system. Install this adaptor in accordance with the installation instructions that are packaged with the adaptor and any applicable codes.

The vent cap is for outdoor

5. Direct-vent conversion kit: 9007668005 6. Pipe cover: 9007672005 (TM-PC32)

(TM-DV32)

This kit can be used to convert the

710 (T-M32) from a conventional vent system to a direct-vent (or sealed combustion) system. This is a CSA tested conversion kit. Install this conversion kit in accordance with the manufacturer’s installation instructions and any applicable codes.

The pipe cover protects the plumbing pipes to the 710 (T-M32) from unexpected adjustments. This pipe cover is fixed to the bottom of the water heater, which hides the plumbing and improves the visual aspects of the whole installation for the water heater.

7.

Sidewall vent terminator (Hood) and Wall thimble:

They are used when venting out through the wall. These terminations are special

Terminator Hood

Wall Thimble

stainless steel vents for gas applications and are UL listed as Categoly ll, lll and lV.

For different wall thickness, there are two ranges of lengths available.

(Refer to the NovaVent brochure

Covering wall thickness Part # for details.) Install these vent terminations in accordance with

Terminator Hood

Wall Thimble 4 - 7 in.

Wall Thimble 5 - 10 in.

9007999005

9008345005

9008346005 their installation instructions and any applicable local codes.

Termination + Thimble 4 - 7 in. 9008004005

Termination + Thimble 5 – 10 in. 9008005005

- 44 -

COMPONENTS DIAGRAM

Case assembly

0 5 2 7 0 2 0 5 1

0 0 3

0 5 0

0 5 1 0 0 4

0 5 2

0 0 1

0 0 5

0 1 1

0 1 0

0 0 7

0 5 1

0 0 7

0 5 2

7 1 3

0 5 2

7 1 1

0 0 6

0 5 2 0 5 0 0 0 2

Computer board assembly

Other than Part# 706, the 710 (T-M32) and the 710 ASME (T-M32 ASME) models share the same components.

0 5 2

0 5 2

7 1 5

0 5 2

0 0 8 7 0 3

7 1 6

7 1 4

7 1 0

7 1 2

7 2 0

0 5 2

7 0 8

0 5 2

7 1 8

4 2 3

7 0 5

7 0 6

705: For 710 (T-M32)

706: For 710 ASME

(T-M32 ASME)

7 1 7

7 0 4

7 0 3

- 45 -

7 0 1 7 1 9

7 0 9 0 5 2 7 0 8

7 1 9

7 0 7

7 0 3

1 1 5

0 5 2

0 0 4

Burner assembly

The 710 (T-M32) and the 710 ASME (T-M32 ASME) models share the same components.

1 0 3 1 0 2 1 0 1 4 0 1

7 0 7

1 5 2

1 5 2 1 0 5 1 0 4

1 0 6

1 5 2

1 5 2 1 1 1

1 0 7 1 5 1 1 0 8 1 0 9 1 1 0

1 5 2

1 5 2 1 2 4

1 2 5

7 0 4

1 5 9

1 5 9 1 2 3

1 5 2 1 1 2

1 1 3

1 5 3

1 1 4

1 1 5

1 5 4 1 1 6

1 1 8

1 5 2

1 2 0

1 2 2

1 5 6

1 5 7

1 5 8

7 0 4

1 1 7

1 1 9 1 2 1 1 5 5

- 46 -

Water way assembly

710 (T-M32)

4 1 4 4 2 0 4 2 3 4 2 0

Other than Part# 211, Part# 439, Part# 440 and Part# 441, the

710 (T-M32) and the 710 ASME (T-M32 ASME) models share the same components.

4 3 1

4 3 0

4 2 0

4 1 4

4 3 6

4 1 4

4 2 9

4 1 4

4 1 4

To t

Heat he

exc hang er

4 0 5

4 2 6

4 2 5

4 3 2

4 2 4

1 5 0

4 3 3

4 2 8

4 2 7

4 1 4

4 1 9

4 2 0

4 3 5

4 2 1 4 1 9 4 2 2 4 3 4

4 1 9

4 2 7 4 3 7

4 1 8

4 1 4

4 1 6

4 1 7

4 1 5

4 1 2

4 1 3

4 0 9

0 5 2

710 ASME (T-M32 ASME)

4 1 4 4 2 3

4 2 0

4 3 1

4 3 6

4 1 4

4 2 9

4 1 4

4 2 8

4 1 4 4 4 0

4 2 0

4 2 7

4 1 9

4 1 8

4 1 6

4 1 7

4 3 5

4 1 5

4 1 4

4 1 2

0 5 2

4 2 0

4 1 1

4 2 0

4 3 9

4 3 4

4 1 4

4 1 4

4 1 3

A

4 2 6

4 2 5

0 5 2 4 1 0

4 2 7

4 0 5

4 2 2

4 1 9

4 3 2

4 2 4

1 5 0

4 3 7

4 1 4

4 1 4

4 0 8 4 0 7 4 0 6

A

2 1 1

2 1 0

4 3 7

4 0 5

4 3 3

4 1 4

4 0 1

4 0 2

4 0 3

1 5 0

4 0 4

4 0 1

4 0 2

4 0 3

4 1 9

4 3 4

1 5 0

4 0 4

4 0 5

4 4 1

4 1 1 0 5 2 4 0 6 4 1 0 4 0 9 4 0 8 4 0 7

- 47 -

PARTS LIST

152

153

154

155

156

157

158

159

160

121

122

123

124

125

151

051

052

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

Part#

Item# Description

710 models T-M32 models

001

002

003

004

005

006

007

008

010

011

Case assembly

Front cover

Air blockage plate

Bracket

Back guard panel

Junction box

Fixing plate

Rubber bush

Overheat-cut-off-fuse for combustion chamber

Fastener

319143-287

319143-303

319143-285

319143-225

319143-283

319143-014

319143-335

319143-334

319143-016

319143-017

EM389

EM431

EM386

EM104

EM384

EKJ64

EX00E

EX00B

EM484

EKK22

Screw M4×10 (W/Washer)

Screw M4×10 (Coated)

Burner assembly

Burner gasket

Guide plate gasket

Burner window

Rod holder gasket

Flame rod

Rod holder

Igniter rod

Rod cap

High voltage igniter cable

Damper

Urethane tube

Pressure port

Fan motor fixing plate

Fan motor

Fan damper

Freeze protection thermostat

Manifold gasket A

Manifold gasket B

Manifold assembly with gas valve assembly LP

Manifold assembly with gas valve assembly NA

Wire cramp

Gas inlet ring

Gas inlet

Igniter plate

Igniter

Pan screw M4×8

Screw M4×10

Pan screw M4×12 (W/Washer)

Screw M3×6

Screw M3×10

O-ring P26 NBR (Black)

Pan screw M4×10

Screw M4×10 (W/Washer)

Hex head screw M4×8

Pan screw M4×6 (W/Washer)

319143-325

319143-026

319143-299

319143-300

319143-301

319143-033

319143-034

319143-035

319143-036

319143-037

319143-038

319143-345

319143-298

319143-346

319143-042

319143-281

319143-043

319143-282

319143-185

319143-304

319143-336

319143-305

319143-306

319143-048

319143-342

319143-307

319143-051

319143-052

319143-059

319143-060

319143-061

319143-330

319143-327

319143-351

319143-062

319143-325

319143-063

319143-090

EW001

EW002

EM410

EM411

EM412

EKK2V

EKK2W

EKJ59

EM435

EX00F

EM440

EM441

EM167

EX00D

EM442

EKK1B

EKN74

EW00D

EKK0E

EKK32

EKK0F

EKN61

EX01Z

EM409

EX02C

EKK2D

EM379

EKK25

EM381

EW003

EW00H

EW00B

EW008

EZP26

EW006

EW001

EW005

EW00L

- 48 -

Part#

Item# Description

710 models T-M32 models

426

427

428

429

430

431

432

433

434

435

436

437

439

440

441

417

418

419

420

421

422

423

424

425

406

407

408

409

410

411

412

413

414

415

416

210

211

401

402

403

404

405

701

702

703

704

705

706

Heat exchanger assembly for 710 (T-M32)

Heat exchanger assembly for 710 ASME (T-M32 ASME)

Silicon ring

Fuse fixing plate 18

Overheat-cut-off-fuse

Pipe heater 122

Heater fixing plate

Filter plug

O-ring P25 FKM

Water inlet filter

O-ring JASO# 1021 FKM

Heater 101

Water inlet

O-ring JASO# 1016 FKM

Heater plate

Fastener “16AG”

Heater

Outlet drain plug

O-ring P6 FKM

Mixing thermistor

O-ring P4 FKM

O-ring P16 FKM

Cold pipe for 710 (T-M32)

Inlet thermistor

Water control valve

Screw M3×6

Heater fixing plate 16

Pipe heater 212

Pan screw M4×6 (W/Washer)

O-ring P15 FKM

Flow sensor

Hot pipe for 710 (T-M32)

L joint

Hi-limit switch

Output thermistor

Fastener “4-11”

Water outlet

O-ring P16 FKM

O-ring P18 FKM

Hot pipe for 710 ASME (T-M32 ASME)

Cold pipe for 710 ASME (T-M32 ASME)

Connection pipe for 710 ASME (T-M32 ASME)

Computer board

Transformer

Junction box inner plate

Gas valve wire

“Flow sensor, Gas proportional valve connection and

Thermistors” wire for 710 (T-M32)

“Flow sensor, Gas proportional valve connection and

Thermistors” wire for 710 ASME (T-M32 ASME)

319143-302

319143-314

319143-065

319143-066

319143-286

319143-224

319143-088

319143-070

319143-071

319143-072

319143-073

319143-068

319143-074

319143-075

319143-076

319143-077

319143-078

319143-079

319143-080

319143-081

319143-082

319143-083

319143-288

319143-085

319143-086

319143-087

319143-125

319143-321

319143-090

319143-091

319143-092

319143-289

319143-318

319143-095

319143-096

319143-097

319143-098

319143-083

319143-349

319143-316

319143-315

319143-317

319143-279

319143-309

319143-322

319143-290

319143-293

EM376

EM454

EM463

EM392

EM396

319143-324 EM479

EM415

EM45C

EKN50

EKK26

EM387

EKN86

EKK27

EM45V

EW00L

EZM15

EKH33

EM391

EM45G

EKN34

EKK2T

EKH30

EKJ02

EZM16

EZM18

EM45E

EM45D

EM45F

EM222

EZM25

EX006

EZN21

EX002

EM404

EZN16

EX021

EX01H

EKK2P

EK239

EZM06

EX00H

EZM04

EZM16

EM390

EKK38

EKH32

EW00A

EK031

- 49 -

Part#

Item# Description

710 models T-M32 models

707

708

709

710

711

712

713

714

715

716

717

718

719

720

Flame rod wire

Nylon clamp

Igniter & Freeze protection wire

AC100V wire

AC100V Transformer connecting wire

Ground fault circuit interrupter

Power supply code assembly

AC120V Transformer connecting wire

Surge box

PCB fixing plate

Remote controller terminal

Screw M3×12

Screw M4×12

PCB cover

319143-292

319143-143

319143-320

319143-291

319143-297

319143-227

319143-296

319143-295

319143-284

319143-280

319143-294

319143-331

319143-343

319143-323

EM395

EC00X

EM45T

EM393

EM403

EM207

EM400

EM399

EM385

EM377

EM398

EW00X

EX013

EM478

OUTPUT TEMPERATURE CHART

Chart is based on properly sized gas line

Output Temperature vs. GPM (Max. 9.0 GPM) with Various Ground Water Temperature

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

40 F

100 105 110 115 120 125 130 135 140 150 160 165 170 175 180 185

6.4

50 F

7.7

60 F

9.0

70 F

9.0

5.9

7.0

8.5

9.0

5.5

6.4

7.7

9.0

5.1

5.9

7.0

8.5

4.8

5.5

6.4

7.7

4.5

5.1

5.9

7.0

4.3

4.8

5.5

4.0

4.5

5.1

3.8

4.3

4.8

3.5

3.8

4.3

6.4

5.9

5.5

4.8

Output Hot Water Temperature

3.2

3.5

3.8

4.3

3.1

3.3

3.7

4.0

2.9

3.2

3.5

3.8

2.8

3.1

3.3

3.7

2.7

2.9

3.2

3.5

2.6

2.8

3.1

3.3

40 F 50 F 60 F 70 F

*When the set temperature is 150 ºF or higher, maximum flow rate is limited to 5.3 GPM.

- 50 -

LIMITED WARRANTY

1. The manufacturer warrants this product against defects in materials or workmanship as described in this document if installed within the

United States or Canada. The manufacturer or its authorized Service Representative will, at its sole discretion, repair or replace any failed or defective mechanical or electrical parts, or components thereof, or, if the manufacturer or its authorized Service Representative cannot replace said parts, and repair is not commercially practicable, the manufacturer or its authorized Service Representative will refund the purchase price. The manufacturer or its authorized Service Representative may, at its sole discretion, use new, refurbished or reconditioned parts.

2. Warranty for all models:

[Unit: Year]

Labor

(1)

Application Type

Single Family Domestic Hot Water

Commercial or Multi-Family Domestic Hot Water

Heating

Heat Exchanger

15

(2)(3)

10

(2)(3)

10

(3)(4)

Parts

5 1

(1) Limited Labor Coverage



The manufacturer will provide for reasonable labor charges associated with warranty repairs or replacements within one

(1) year from the date of purchase. The manufacturer will only pay directly to the service provider.



Warranty service must be performed by an authorized Service Representative. A list of authorized Service

Representatives is available upon request.



All warranty claims and warranty service must be authorized and approved by the manufacturer.

(2) Includes recirculation and storage tank applications with proper circulation pump control (e.g. aquastat and/or timer).

- Lack of a proper pump control will reduce the heat exchanger and parts warranty to 3 years

(3) In all applications, the total of length of operation time must be less than 9,000 hours for the 710 (T-M32) and 710 (T-M32)

ASME models.

(4) Includes dual-purpose applications (combination heating and domestic).

3. General terms of limited warranty:

This limited warranty gives you specific legal rights, and you may also have other rights which vary from State to State. The manufacturer will honor the warranty to the original retail buyer at the original location only, within the United States or Canada, and it is not transferable.

THIS WARRANTY COVERS ONLY FAILED MECHANICAL AND ELECTRICAL PARTS DUE TO FACTORY DEFECTS

UNDER NORMAL USAGE FOR THE PRODUCT’S INTENDED PURPOSES AND WITHIN THE APPLICABLE PERIOD

SPECIFIED IN THE FOLLOWING TABLES. ONLY DIRECT DAMAGES SHALL BE RECOVERABLE BY A CLAIMANT

UNDER THIS LIMITED WARRANTY AND, IN NO EVENT, WHETHER AS A RESULT OF BREACH OF CONTRACT,

BREACH OF WARRANTY, TORT LIABILITY (INCLUDING NEGLIGENCE), STRICT LIABILITY, INDEMNITY OR

OTHERWISE THE MANUFACTURER WILL BE LIABLE FOR ANY SPECIAL, INCIDENTAL, OR INDIRECT

CONSEQUENTIAL DAMAGES INCLUDING PROPERTY DAMAGE, PERSONAL DAMAGES, LOSS OF USE, OR

INCONVENIENCE. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR

CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

4. Limitation on Duration of Implied Warranties:

ANY IMPLIED WARRANTIES ARISING UNDER STATE LAW, INCLUDING THE IMPLIED WARRANTIES OF FITNESS

FOR A PARTICULAR PURPOSE AND MERCHANTABILITY, SHALL IN NO EVENT EXTEND PAST THE EXPIRATION

OF ANY WARRANTY PERIOD HEREUNDER. SOME STATES DO NO ALLOW LIMITATIONS ON HOW LONG AN

IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

5.

THIS WARRANTY WILL NOT COVER THE FOLLOWING:



Any product that is not installed by a licensed plumber, gas installer, or contractor.



Damages due to accidents, abuse, misuse, improper installation, misapplication, or incorrect sizing.



Damages due to fires, flooding, freezing, electrical surges, or any Acts of God.



Damages due to unauthorized alterations, attachments, and/or repairs.



Damages due to a lack of maintenance (e.g. water filter, water treatment system, vent blockage, etc.).



Any product installed in an improper environment (e.g. corrosive, dusty, chemically contaminated, excessive lint, etc.).



Freeze damage that occurs without taking proper preventive measures as described in the installation manual.



Condensate damage due to improperly installed or lack of a condensate trap (drain).



Any product not installed in compliance with all applicable local & state codes, ordinances, and good trade practices.



Any product sold to or installed in areas outside of the fifty states (and the District of Columbia) of the United States of America and

Canada.



Any product installed in applications that cause the water heater to activate more than 300 times per day. (This averages to an activation every 5 minutes in a 24-hour period.)



Any failures that are not due to defects in materials or workmanship (mechanical and/or electrical parts).



Damages due to improper installation:

 Gas: incorrect gas pipe sizing, incorrect gas meter sizing, incorrect gas type, and/or gas pressures that fall outside the product’s specified range.

- 51 -

 Water: incorrect water pipe sizing, water pressures that fall outside the product’s specified range, recirculation flow rates that fall outside the product’s specified range (air removal), and/or lack of proper methods of air removal in a closed-loop, circulation system. (See installation manual for details.)

 Electric: supply power voltages that fall outside the product’s specified range.



Damages due to water quality:

 Introduction of liquids other than potable water or potable water / glycol mixtures into the product.

 Introduction of pool water, spa water, or any chemically treated water into the product.

 Introduction of hard water measuring more than 7 grains per gallon (120 ppm) for single family domestic applications or more than 4 grains per gallon (70 ppm) for all other types of applications into the product.

 Introduction of untreated or poorly treated well water into the product.

 Introduction of water with pH levels less than 6.5 and greater than 8.5 into the product.

- 52 -

ATM32

63T051-5