Condair 2596645-A Nortec GS Series Installation guide

Condair 2596645-A Nortec GS Series Installation guide

INSTALLATION MANUAL

Gas-fired Steam Humidifier

Nortec

GS

Series II

Humidification and Evaporative Cooling

NORTEC

DANGER!

Fire or explosion hazard!

If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life

.

DO NOT store or use gasoline or other flammable va

-

pors and liquids in the vicinity of this or any other

appliance.

WHAT TO DO IF YOU SMELL GAS

DO NOT try to light any appliance.

DO NOT touch any electrical switch.

DO NOT use any phone in the building.

Close the gas valve.

Open windows and doors.

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.

Thank you for choosing Condair

Installation date (DD/MM/YYYY):

Commissioning date (DD/MM/YYYY):

Site:

Model:

Serial number:

Proprietary Notice

This document and the information disclosed herein are proprietary data of Condair Ltd. Neither this document, nor the information contained herein shall be reproduced, used, or disclosed to others without the written authorization of

Condair Ltd., except to the extent required for installation, operation or maintenance of the customer's equipment.

Liability Notice

Condair Ltd. does not accept any liability due to incorrect installation, maintenance or operation of the equipment, or due to the use of parts/components/equipment that are not authorized by Condair Ltd..

Copyright Notice

© Condair Ltd., All rights reserved.

Technical modifications reserved.

Contents

1 Introduction

1.1 General

2

3

3.1

3.2

For Your Safety

Receiving and Storage

Inspection

Storage and Transportation

4

4.1

4.2

4.3

4.4

4.5

Product Overview

General Description

Model Designation

Model Specifications

Options

Accessories

5.5

5.5.1

5.5.2

5.5.2.1

5.5.3

5.6

5.6.1

5.6.2

5.6.3

5.6.4

5.7

5.7.1

5.7.2

5.7.3

5.8

5.8.1

5.8.2

5.8.2.1

5 Installation

5.1 General

5.2

5.2.1

5.2.2

5.3

Installation Overview

Typical Installation – Compact Units

Typical Installation – Full-Size Units

Site Requirements

5.4

5.4.1

5.4.1.1

5.4.2

5.4.3

5.4.4

5.4.5

5.4.6

Mounting the Humidifier

Clearances

Overall Dimensions and Weight

Removing the Shipping Pallet

Wall Mounting – Compact Unit Only

Floor Stand Mounting - Compact Unit

Floor Stand Mounting - Full Size unit

Mounting Checklist

Steam Connection

Installing the Main Steam Pipe

Best Practices for Installing Steam and Condensate Lines

Common Steam and Condensate Line Installation Mistakes

Steam Connection Checklist

Water Connections

Water Connections

Installing Exhaust Condensate Drain Line (CS/NX Model Only)

Water Connection Requirements

Water Connections Checklist

Combustion Air Connection

Space Air Installation

Sealed Combustion Installation

Combustion Air Checklist

Exhaust Vent Connection

General Requirements

Exhaust Vent Installation for CS/NX Model

Installation as a Category III Appliance

4

Contents 2596645_A_EN_1912_Nortec-GS_IM

6

9

9

9

5

5

14

14

15

15

16

17

22

23

23

24

19

19

20

21

37

37

42

42

35

35

35

37

31

31

32

33

34

24

25

26

29

30

11

13

13

10

10

10

Nortec GS

8

8.1

8.2

9

9.1

9.2

6

6.1

6.1.1

6.1.2

7

5.8.2.2

5.8.2.3

5.8.3

5.9

5.9.1

5.9.2

5.9.3

Installation as a Category IV Appliance

Installation Requirements for Category III/IV Appliances.

Exhaust Vent Checklist

Gas Connection

Gas Connection, Compact and Full-Size Unit

Gas Leakage Test

Gas Connection Checklist

5.10

5.10.1

5.10.2

Humidity Control Systems

Control Device Locations

Permissible Control Signal Inputs

5.11 Electrical Connections

5.11.1 General

5.11.2

5.11.2.1

5.11.2.2

5.11.3

5.11.3.1

5.11.3.2

5.11.3.3

5.11.3.4

5.11.3.5

5.11.3.6

5.11.3.7

5.11.4

5.11.5

Wiring Diagrams

Nortec GS - All Units

Nortec GS - 450/600

External Connections

External Security Loop

Modulating Demand or Humidity Signal

On/Off Humidistat Signal

Full Tank Blowdown Signal Connection

Remote Fault PCB Connections

Single-Phase Power Supply Connection

Modbus Connection

Connecting Multiple Units Using Linkup

Electrical Connections Checklist

Commissioning

Commissioning Checklist

Pre-Start-Up Checklist

Performance Checklist

Installation Checklist

Product Specifications

Weights

Dimensions

Performance and Operating Data

Performance Data

Operating Data

68

68

68

73

73

73

57

57

57

63

65

54

55

56

52

52

52

53

49

50

50

51

47

47

48

48

46

46

46

44

44

45

45

42

42

43

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Contents

5

1 Introduction

1.1

Thank you for purchasing the Nortec GS humidifier.

The Nortec GS humidifier incorporates the latest technical advances and meets all recognized safety standards. Improper use of the Nortec GS humidifier may result in danger to the user or third parties, and/or damage to property.

To ensure proper operation of the Nortec GS humidifier, observe and comply with all information and safety instructions contained in this manual, as well as all relevant documentation of components of the installed humidification system. Comply with all local and regional regulations dealing with gas, combus tion air, flue gases, water, steam and electrical installations.

If you have additional questions, contact your Condair representative. They will be glad to assist you.

General

Limitations

The subject of this manual is the Nortec GS humidifier. The various options and accessories may only be described in-so-far as is necessary for proper installation and operation of the equipment. Additional informa tion on available options and accessories can be obtained in the instructions that are supplied with them.

This manual is restricted to the installation of the Nortec GS humidifier, and is intended for well trained personnel who are suitably qualified for their respective tasks.

Symbols Used in This Manual

CAUTION!

The catchword "CAUTION" with the general caution symbol is used to provide safety instructions that, if neglected, may cause damage and/or malfunction of the unit or damage to property.

WARNING!

The catchword "WARNING" with the general warning symbol is used to provide safety instructions that, if neglected, may cause injury to personnel. Other specific warning symbols may also be used in place of the general symbol.

DANGER!

The catchword "DANGER" with the general danger symbol is used to provide safety instructions that, if neglected, may cause severe injury to personnel or even death. Other specific danger symbols may also be used in place of the general symbol.

Other Related Publications

This manual is supplemented by other publications such as the Operation and Maintenance Manual,

Spare Parts List, etc., which are included in the delivery of the equipment. Where necessary, appropriate cross-references to these publications have been added in this manual.

Storage of Manual

Keep this manual in a place where it is safe and readily accessible. If the equipment is moved to another location, make sure that the manual is passed on to the new user. If the manual is lost or misplaced, contact your Condair representative for a replacement copy.

Language Versions

This manual is also available in other languages – contact your Condair representative.

6

Introduction 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

2 For Your Safety

General

Every person who is tasked with the installation of the Nortec GS humidifier must read and understand this manual before performing any work on the unit. Knowing and understanding the contents of the

Installation Manual, and the Operation and Maintenance Manual is a basic requirement for protecting personnel against any kind of danger, preventing faulty operation, and operating the unit safely and correctly.

All labels, signs and markings applied to the Nortec GS humidifier must be observed and kept in a readable state.

Personnel Qualifications

All procedures described in this manual must only be performed by personnel who are adequately quali fied, well trained and are authorized by the customer.

For safety and warranty reasons, any activity beyond the scope of this manual must only be performed by qualified personnel authorized by Condair.

All personnel working with the Nortec GS humidifier must be familiar with, and comply with the appropri ate regulations on workplace safety and prevention of accidents.

Intended Use

The humidifier is intended exclusively for air humidification using a Condair-approved steam distributor within specified operating conditions (refer to the Operation and Maintenance Manual) . Any other type of application, without the express written consent of Condair, is considered to be NOT conforming to its intended purpose, and may lead to dangerous operation and will void the warranty.

In order to operate the equipment in the intended manner all information contained in this manual, in particular the safety instructions, must be observed closely.

Safety Precautions that Must be Observed

DANGER!

Risk of electric shock!

The Nortec GS humidifier is mains powered. Live parts may be exposed when the access panels are removed. Touching live parts may cause severe injury or even death.

Prevention

: The Nortec GS humidifier must be connected to the mains only after all installation work has been completed, checked for correct workmanship, and the access panels are installed properly and fastened securely.

WARNING!

Wiring errors can cause improper and dangerous operation of the humidifier!

Prevention:

Tag all wires before disconnecting them. Reconnect all wires correctly after servicing, and check the unit functions properly.

CAUTION!

Electrostatic discharge (ESD)!

The electronic components inside the control cabinet in the humidifier are sensitive to elec trostatic discharge (ESD).

Prevention:

Take appropriate measures to protect the electronic components inside the unit against damage caused by electrostatic discharge (ESD).

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

For Your Safety

7

DANGER!

Risk of fire or explosion!

The Nortec GS is a gas-fired humidifier. Improper installation, adjustment, alteration, service, maintenance or use can cause carbon monoxide poisoning, explosion, fire or other hazards that can cause serious injury, death or property damage.

If over-heating occurs or if the gas fails to shut off:

Shut off the gas supply at the manual gas shutoff valve before shutting off the electrical power supply.

DO NOT use this appliance if any part has been under water.

Call a qualified service techni cian immediately to inspect and replace any part of the control system or gas control that has been under water.

Any work on the gas system must only be performed by a qualified installer, service agency or your local gas supplier. Use only factory-authorized and listed kits or accessories when installing or modifying this appliance.

DO NOT store or use gasoline or other flammable vapours and liquids in the vicinity of the humidi fier or any other appliance.

What to do if You Smell Gas:

DO NOT try to light any appliance.

DO NOT touch any electrical switch.

DO NOT use any phone in the building.

Leave the building immediately.

Call your gas supplier immediately from a location far away from the building with the gas leak.

Follow the gas supplier's instructions.

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

WARNING!

Risk of severe burns from contact with hot steam vapours!

The Nortec GS humidifier produces hot steam vapours for humidification. Bare skin in contact with hot steam vapours can result in severe burns.

Prevention

: Avoid contact with steam vapours, or wear appropriate personal protective equip ment when working near steam vapours.

WARNING!

Risk of severe burns from contact with hot surfaces!

The water tank, steam line and exhaust system in the Nortec GS humidifier get very hot during operation. Bare skin in contact with hot surfaces can result in severe burns.

Prevention:

Shut down the Nortec GS steam humidifier and wait for the components to cool down before performing any work on the unit, owear appropriate personal protective equipment. Never use the manual drain valve until the unit has cooled down.

.

Preventing Unsafe Operation

All personnel working with the unit must immediately report to the customer any alterations to the unit that may affect safety, and secure it against accidental power-up.

DO NOT

modify this appliance.

Modifications are NOT permitted

on the Nortec GS humidifier without the express written consent of

Condair.

8

For Your Safety 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Always use original Condair replacement parts and accessories available through your Condair representative.

The location of the various safety labels on the Nortec GS humidifier is shown below.

5

3

2

1

4

Figure 1: Safety Labels

1 Label, gas safety warning

2 Label, keep cabinet closed warning

3 Label, installation guidelines

4 Label, general safety warning

5 Label, specification

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

For Your Safety

9

3

Receiving and Storage

3.1

3.2

Inspection

All Condair products are shipped F.O.B at the factory. All damage, breakage or loss claims are the re sponsibility of the shipping company.

After receiving the shipment, inspect the goods as follows:

– Inspect the shipping boxes for damage. Report any shipping box damages to the shipping company without delay.

– Check the goods against the packing slip to ensure that all items have been delivered. Report any shortages to your Condair representative within 48 hours of receipt of the goods. Condair does not assume responsibilities for any shortages beyond this period.

– Unpack the parts/components and check for any damage.

If parts/components are damaged, notify the shipping company immediately.

– Verify the model type on the specification label to ensure that it is suitable for your installation. Refer

to

"Model Specifications" on page 12

.

Storage and Transportation

Storage

Store the Nortec GS humidifier in its original packaging inside a protected area that meets the follow ing requirements until it is installed. These requirements also apply if the unit needs to be stored for an extended period of time.

– Room temperature: 41 to 104°F (5 to 40°C)

– Room humidity: 10 to 75% RH

Transportation

For optimum protection always transport the unit and components in their original packaging, and use appropriate lifting/transporting devices.

Packaging

Keep the original packaging of the unit/components for later use.

If the packaging needs to be disposed off, observe local regulations on waste disposal. Recycle pack aging where possible.

10

Receiving and Storage 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

4

Product Overview

4.1 General Description

The Nortec GS series is a completely new design of gas-fired steam humidifiers. It is designed to provide clean steam humidification at an economical price. The Nortec GS humidifier is available in condensing high-efficiency (CS), ultra-low NOx condensing (NX), and Mid-Temperature models in capacities rang ing from 50 lb/h to 600 lb/h (23 kg/h to 260 kg/h). The CS and NX models are installed as Category IV appliances. The MT models are installed as Category III and Category IV appliances.

The Nortec GS humidifier comes in two housing styles – compact 50-100 lb/h (23-45 kg/h), and full-size

150-600 lb/h (65-260 kg/h). Refer to

Figure 2

.

4

5

1

2

3

Figure 2: Nortec GS-Series II Humidifiers

1 Nortec GS 50/100 (compact housing)

2 Nortec GS 150 (full-size housing)

3 Nortec GS 200/300 (full-size housing)

4 Nortec GS 450 (full-size housing)

5 Nortec GS 600 (full-size housing)

4.2

Model Designation

The specification label on the right side of the Nortec GS humidifier shows its model number, serial number and ratings – refer to the figure below.

Figure 3: Nortec GS -Series II Humidifier Specification Label

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Product Overview

11

4.3

The breakdown of the model number is shown below.

Nortec GS 150 CS -Series II

Series (Gas)

Steam Capacity lb/h

50

100

150

200

300

450

600

Efficiency

CS - Condensing High Efficiency

NX - Ultra-Low NOx Condensing

MT - Mid-Temperature

Figure 4: Model Number Breakdown (Example)

Model Specifications

The tables below list the specifications for the Nortec GS humidifier.

Condensing High-Efficiency (CS) Model Specifications

Table 1: Condensing High-Efficiency (CS) Model Specifications

Model

Nortec GS 50-CS

Fuel

Natural gas

Propane

Nortec GS 100-CS

Natural gas/

Propane

Nortec GS 150-CS

Natural gas/

Propane

Nortec GS 200-CS

Natural gas/

Propane

Nortec GS 300-CS

Natural gas/

Propane

Nortec GS 450-CS

Natural gas/

Propane

Nortec GS 600-CS

Natural gas/

Propane

Blower

Speed

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Input

BTUh (kW)

62,000 (18.2)

12,400 (3.6)

62,000 (18.2)

13,000 (3.8)

124,000 (36.4)

24,800 (7.3)

186,000 (54.5)

37,200 (10.9)

248,000 (72.7)

24,800 (7.3)

372,000 (109.0)

37,200 (10.9)

558,000 (163.5)

37,200 (10.9)

744,000 (218.0)

37,200 (10.9)

Steam Capacity lb/h (kg/h)

50 (23)

10 (4.5)

50 (23)

10 (4.5)

100 (45)

20 (9)

150 (68)

30 (13.6)

200 (91)

20 (9)

300 (136)

30 (13.6)

450 (204)

30 (13.6)

600 (272)

30 (13.6)

Manifold Pressure in H2O (Pa)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

12

Product Overview 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Ultra-Low NOx Condensing (NX) Model Specifications

Table 2: Ultra-Low NOx Condensing (NX) Model Specifications

Model

Nortec GS 50-NX

Nortec GS 100-NX

Nortec GS 150-NX

Nortec GS 200-NX

Nortec GS 300-NX

Nortec GS 450-NX

Nortec GS 600-NX

Fuel

Natural gas

Natural gas

Natural gas

Natural gas

Natural gas

Natural gas

Natural gas

Blower

Speed

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Input

BTUh (kW)

65,000 (19.0)

13,000 (3.8)

120,000 (35.2)

26,000 (7.6)

187,500 (55.0)

39,000 (11.4)

240,000 (70.3)

26,000 (7.6)

375,000 (109.9)

39,000 (11.4)

562,500 (164.9)

39,000 (11.4)

750,000 (219.8)

39,000 (11.4)

Steam Capacity lb/h (kg/h)

50 (23)

10 (4.6)

100 (45)

20 (9)

150 (68)

30 (13.6)

200 (91)

20 (9)

300 (136)

30 (13.6)

450 (204)

30 (13.6)

600 (272)

30 (13.6)

Manifold Pressure in H2O (Pa)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

Mid-Temperature (MT) Model Specifications

Table 3: Mid-Temperature (MT) Model Specifications

Fuel

Natural gas

Natural gas

Natural gas

Natural gas

Natural gas

Natural gas

Natural gas

Blower Speed

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Input

BTUh (kW)

Model Nortec GS 50 -MT

70 000 (20.5)

14 000 (4.1)

Model Nortec GS 100 -MT

140 000 (41.0)

28 000 (8.2)

Model Nortec GS 150 -MT

210 000 (61.5)

42 000 (12.3)

Model Nortec GS 200 -MT

280 000 (82.1)

28 000 (8.2)

Model Nortec GS 300 -MT

420 000 (123.1)

42 000 (12.3)

Model Nortec GS 400 -MT

630 000 (184.6)

42 000 (12.3)

Model Nortec GS 600 -MT

840 000 (246.2)

42 000 (12.3)

Steam Capacity lb/h (kg/h)

50 ( 23 )

10 (4.6)

100 (

20 (

45

9 )

150 (68)

30 (13.6)

200 (

20 (

300 (

91

9 )

136

)

)

30 (13.6)

450 (204)

30 (13.6)

600 (272)

30 (13.6)

)

Manifold Pressure in H2O (Pa)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

-0.01 (-2.5)

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Product Overview

13

High Altitude De-rating

All high altitude installations have a de-rating of the input capacity. All Canadian models have an auto matic 10% de-rating for installations between altitudes of 2000-4500 ft (610-1372 m). For U.S. models,

refer to

Table 4

for the applicable de-ratings.

Table 4: High Altitude De-rating

Altitude

Feet (ft)

0-2000

2001-3000

3001-4000

4001-4500

4501 and higher

Meters (m)

0-610

610-915

915-1220

1220-1370

1370 and higher

De-rating (%)

12

16

0

8

Contact factory

4.4

4.5

Options

The table below shows the options for the Nortec GS humidifier. Contact your Condair representative for details.

Table 5: Nortec GS Series Options

Option

Natural gas or propane

Application

Factory-installed gas valve for using either natural gas or propane in the humidifier.

Note

: only CS models can be configured for propane.

Accessories

The Accessory table shows the accessories for the humidifier. Contact your Condair representative for details.

Table 6: Accessories for the Nortec GS Series

Accessory

Steam distributor – ASD,

BSD, CSD

SAM-e steam distribution manifold, and mini SAM-e

Blower pack (remotemounted)

Application

Steam distribution system for use in an air duct.

Digital or analog control humidistat with either On/Off or modulating operation

Digital RH transducer

Digital or analog high limit humidistat with either On/Off or modulating operation

Air proving switch

Outdoor temperature sensor

Mounting stand (CS/NX/MT models only)

Steam distribution system for use in an air duct where reduced absorption distance is required.

For direct room humidification or use in conditioned spaces without a built-in air distribu tion system. The Nortec GS can use a remote-mounted blower pack for steam distribution

(blower pack ordered as an accessory). Larger Nortec GS units require multiple blower packs.

Input device used to meter the output of the humidifier based on the sensed relative humidity. The humidistat can be installed in the conditioned space that is being humidified, or within the duct.

Input device used to communicate the relative humidity in a conditioned space or a duct to the humidifier.

Input device used to limit the output of the humidifier by either shutting it down or throttling it down when the humidity in the duct approaches the high limit.

Input device to ensure that humidification only occurs when air is moving through the duct.

Input device used to communicate the outdoor temperature to the humidistat so that it can lower the setpoint value during cold weather to prevent condensation on exterior windows/ surfaces.

(Optional for Nortec GS 50/100) Stand for independent mounting of the humidifier on the floor.

14

Product Overview 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5 Installation

5.1 General

Strictly observe all instructions and perform all tasks (including the mounting of the unit and connection of the gas, flue gas, water, steam and power supplies) as described in this manual.

Adhere to all local and national codes dealing with gas, combustion air, flue gas, water, steam and electrical installations. In the absence of local codes, the installation must conform to the ANSI Z223.1,

National Fuel Gas Code, and/or CSA B149.1 codes.

Nortec GS-Series II does not accept any liability for installation of humidification equipment by unquali fied personnel, or the use of equipment/parts that are not authorized by Condair.

Personnel Qualifications

All installation work must be performed only by licensed personnel authorized by the customer. It is the customer’s responsibility to verify qualifications of the personnel.

Safety

Observe the following safety precautions:

DANGER!

Risk of explosion and fire!

The Nortec GS-Series II is a gas-fired humidifier. Improper installation, adjustment, altera tion, service, maintenance or use can cause carbon monoxide poisoning, explosion, fire or other hazards that can cause serious injury, death or property damage.

If assistance is re quired, contact a qualified installer, service agency or your local gas supplier.

Use only factory-authorized and listed kits or accessories when installing or modifying this appliance.

DANGER!

Risk of electric shock!

The Nortec GS-Series II humidifier is mains powered. Live parts may be exposed when the access panels are removed. Touching live parts may cause severe injury or even death.

Prevention

: The Nortec GS-Series II humidifier must be connected to the mains only after all installation work has been completed, checked for correct workmanship, and the access panels are installed properly and fastened securely.

CAUTION!

Risk of damage to internal components from electrostatic discharge (ESD)!

The electronic components inside the humidifier are sensitive to electrostatic discharge

(ESD).

Prevention:

Take appropriate measures to protect the electronic components inside the unit against damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Installation

15

5.2

Installation Overview

5.2.1

Typical Installation – Compact Units

27

28

17

24

25

26

6

7

2, 5

4

1, 2

3

16

14

15

21

29

19

13

12

11

10

8

18

23

7

22

20

9

Figure 5: Installation Overview – Compact Unit

1 Humidistat, On/Off (for humidity control)

2 Humidity sensor or modulating humidistat (used for control of the space in the return duct, high limit in the supply duct)

3 Duct, return air

4 Duct, supply air

5 Humidistat, On/Off, high limit (external security loop)

6 Drain line, condensate (with trap)

7 Funnel, air gap (with optional trap)

8 Inlet, water

9 Outlet, condensate drain

10 Outlet, drain

11 Inlet, intake air

12 Inlet, gas

13 Supply line, water

14 Trap, sediment

15 Supply line, gas

16 Valve, manual gas shutoff

17 Switch, disconnect, electrical fused

(dedicated)

18 Fitting, union

19 Valve, water shutoff

20 Filter, water (optional, but recommended)

21 Fitting, union

22 Drain line

23 Drain line, exhaust condensate (CS/NX model only)

24 Steam line

25 Vent, exhaust (connected to exterior)

26 Vent, air intake (connected to exterior

– optional)

27 Distributor, steam

28 Switch, air proving (external security

29 loop)

Double check valve backflow preventer

(supplied by others)

16

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.2.2 Typical Installation – Full-Size Units

1, 2

3

23

22

19

20

21

6

2, 5

4

16

7

15

10

9

8

11

12

24

14

13

Nortec GS150 Nortec GS 200-600

18

17

7

Figure 6: Installation Overview – Full-Size Units ( Nortec GS 150 Shown)

1 Humidistat, On/Off (used for humidity control)

2 Humidity sensor or modulating humidistat (used for control of the space in the return duct, high limit in the supply duct)

3 Duct, return air

4 Duct, supply air

5 Humidistat, On/Off, high limit (external security loop)

6 Drain line, condensate (with trap)

7 Funnel, air gap (with optional trap)

8 Supply line, gas

9 Manual gas shutoff valve

10 Fitting, union

11 Trap, sediment

12 Filter, water (optional, but recommended)

13 Valve, water shutoff

14 Supply line, water

15 Fitting, union

16 Switch, disconnect, electrical fused

(dedicated)

17 Drain line

18 Drain line, exhaust condensate (CS/NX model only)

19 Steam line

20 Vent, air intake (connected to exterior

– optional)

21 Vent, exhaust vent (connected to exterior)

22 Distributor, steam

23 Switch, air proving (external security loop)

24 Double check valve backflow preventer

(supplied by others)

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Installation

17

5.3 Site Requirements

In preparation for installation of the Nortec GS humidifier ensure that the following site requirements are satisfied. Report any discrepancies to the site engineer.

Steam and Condensate Lines

…

…

The location of the Nortec GS humidifier is largely dependent on the location of the steam distributor, the exhaust vent pipe and the air intake pipe. To minimize heat loss through the steam line, choose the location of the humidifier so that it is as close as possible to the steam distributor.

Keep the length of the steam line as short as possible. When possible, install the humidifier below the steam distributor. Make sure that the selected location permits proper routing of steam and condensate lines. Refer to

"Best Practices for Installing Steam and Condensate Lines" on page 27

for details.

Mounting

…

…

…

…

…

…

…

The space in which the humidifier is to be installed must allow adequate clearances for ease of maintenance, and must be easily accessible for servicing. Refer to

"Clearances" on page 20

for the required and suggested clearances. Adhere to all local and national installation codes or regulations.

Condair is not responsible for any installation code violations.

The Nortec GS humidifier is designed to be floor-mounted, with the exception of the Nortec GS

50/100 unit which may also be mounted on the wall. The Nortec GS 150/600 units comes with a mounting stand. The Nortec GS 50/100 comes with a wall mount and floor stand.The floor must be level if mounting the unit on the floor.

If wall-mounting the compact unit, choose a wall or other suitable vertical surface that offers a suf ficiently high load-bearing capacity – refer to maximum operating weight in

"Overall Dimensions and

Weight" on page 21

.

In addition, the mounting surface must be able to withstand temperatures of 140-158 °F (60-70 °C) that can be generated during operation of the humidifier. Care must also be taken to ensure that the unit is not mounted above sensitive equipment or walkways.

Do not mount the humidifier on wooden floors, carpeting or near combustible materials. Adhere to all local and national installation codes or regulations.

Do not mount the humidifier on vibrating surfaces, or near hot surfaces or surfaces that can freeze.

The Nortec GS humidifier must be installed in a drip-proof location within buildings, where the ambi ent temperature is 41-104 °F (5-40 °C) and the relative humidity is 5-80% (non-condensing). The selected location must also protect all electrical components in the humidifier from water damage.

Water Supply

…

The water supply to the humidifier must be cold potable drinking water, reverse osmosis (RO) water or de-ionized water (DI), with a flow rate of 2.6 gpm (10 L/min) for Nortec GS 50-300 unit or 5.3 gpm

(20 L/min) for Nortec GS

450-600 unit. The water quality requirements are listed in

Table 7

.

Table 7: Water Quality Requirements

Water Type

Potable

Treated

Hardness gpg ( PPM )

0-15 (0-256)

0-0.99 (0-17)

Alkalinity pH

6.5-7.5

7-7.5

Chloride

PPM

0-40

0-40

Conductivity

µS/cm

0-1500

0-100

Silica

PPM

0-14

0-1

…

…

…

…

The water supply line to the humidifier must have a minimum diameter of 1/2 in ( 12 mm ) with a

1/2 in NPT female end. The line must also have a shutoff valve and a union fitting for ease of main tenance.

For best performance, water temperature should be 34-59 °F (1-15 °C), and maximum temperature must not exceed 77 °F (25 °C).

The water from the tank may flow back to the water source. To prevent backflow from the unit to the water supply, install a double check valve backflow preventer. Adhere to all local and national installation regulations.

The water supply should be filtered to 5 μm (optional, but recommended) and pressure regulated to 30-80 psig (207-550 kPa).

18

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

…

…

The water supply pipe can be made of plastic that is pressure-proof and certified for use with drink ing water systems, copper (not permitted for DI water) or stainless steel (minimum DIN 1.4301).

The water supply should be free of additives such as corrosion inhibitors, disinfectants, etc., which may affect the performance of the humidifier.

Drainage

…

…

…

The humidifier should be connected to a dedicated building drain (recommended) with a minimum drainage rate of 5.3 gpm (20 L/min). The drain line must allow free and easy drainage.

The building drain pipe should be made of a material rated to handle high temperature discharge water at 212 °F (100 °C).

The space in which the humidifier is to be installed should have a floor drain connected to the build ing drain. However, if a floor drain is not available, a leakage monitoring device must be supplied to permit interruption of the water supply in case of a leakage. A drain pan is also recommended to prevent property damage.

Combustion Air

…

…

…

The space in which the humidifier is to be installed must have access to a good supply of clean combustion air at atmosheric pressure. Adhere to appropriate local and national installation regula tions for sealed combustion and space air installations.

The maximum temperature of the combustion air supply should be 386 °F (30 °C).

For additional requirements for sealed combustion and space air installations refer to

"Combustion Air

Connection" on page 36

.

Exhaust Venting

…

…

The space in which the humidifier is to be installed must permit routing of exhaust air to the outside.

Adhere to all local and national installation regulations.

For additional requirements for the different types of exhaust vent installations refer to

"Exhaust Vent

Connection" on page 38

.

Gas Supply

…

…

…

…

…

…

Gas supply to the unit must be equipped with a certified manual gas shutoff valve located in the immediate vicinity of the humidifier.

Thermally actuated gas shut-off device may be installed on the gas line, before the humidifier. Install the device following all local codes and regulations.

If black pipe is used, a sediment trap (located between the manual shutoff valve and the unit) must also be supplied.

A capped 1/8 in NPT test port must be supplied in the gas line immediately upstream from the hu midifier gas connection.

A union fitting must be supplied in the gas line immediately upsteam from the humidifier gas connection.

The operating pressure of the gas supply to the humidifier must be as listed in

Table 8

.

Table 8: Gas Operating Pressure

Gas Type

Natural gas (North America)

Propane (North America)

Operating Pressure

in H2O (kPa)

Minimum

5 (1.3)

9.0 (2.2)

Maximum

10.0 (2.5)

14.0 (3.5)

…

The gas supply line must be sized as listed below. The pipe connection should have male NPT threads.

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Installation

19

5.4

…

Gas Line Size

Model

Nortec GS 50

Nortec GS 100

Nortec GS 150

Nortec GS 200

Nortec GS 300

Nortec GS 450

Nortec GS 600

Minimum Gas Line Size

in ( mm )

1/2 ( 15 )

1/2 ( 15 )

3/4 (20)

1 ( 25 )

1 ( 25 )

1-1/4 ( 32 )

1-1/4 ( 32 )

Gas Inlet Size (Female)

1/2 in NPT to 1/2 in BSPP

1/2 in NPT to 1/2 in BSPP

3/4 in NPT to 3/4 in BSPP

1 in NPT to 1 in BSPP

1 in NPT to 1 in BSPP

1 in NPT to 1.25 in BSPP

1 in NPT to 1.25 in BSPP

Power Supply

…

…

…

The power supply to the humidifier must not exceed the rated current draw indicated on the speci fication label. Refer to

"Model Specifications" on page 12

.

The power supply must have an external dedicated fused disconnect switch located in the immediate vicinity of the humidifier. The

fusing must be a slow-blow fuse and not exceed the maximum current draw of 15 A.

If a remote-mounted blower pack is used for steam distribution, an external 120 VAC, 15 A power source must be supplied.

Mounting the Humidifier

Before mounting the Nortec GS humidifier, refer to

"Site Requirements" on page 18

for the location and mounting requirements.

5.4.1

Clearances

The required clearances are listed below. Refer to

"Overall Dimensions and Weight" on page 21

. Consult local and national installation regulations. Condair does not accept responsibility for violations of the installation codes.

3 ft (1.0 m)

*

A

12 in (0.30 m)

*

12 in (0.30 m)

*

E

F

D

B

C

Figure 7: Humidifier Suggested Clearances

20

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

* minimum

Table 9: Required Clearances*

Model

Overhead

Clearance "A" in ( mm )

16 (406)

Right Side

Clearance "B" in ( mm )

24 (610)

Floor Stand

Height "C" in ( mm )

26 (670)

Front

Clearance "D" in ( mm )

36 ( 914 ) Nortec

GS 50

Nortec

GS 100

Nortec

GS 150

Nortec

GS 200

Nortec

GS 300

Nortec

GS 450

Nortec

GS 600

16 (406)

16 (406)

16 (406)

16 (406)

16 (406)

16 (406)

24 (610)

24 (610)

24 (610)

24 (610)

24 (610)

24 (610)

26 (670)

17 ( 426 )**

17 ( 426 )

17 ( 426 )

17 ( 426 )

17 ( 426 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

* Consult local and national installation codes.

** The Nortec GS 150 may also be floor mounted without the stand.

Left Side

Clearance "E" in ( mm )

0 (0)

Rear Clearance

"F" in ( mm )

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

Table 10: Suggested Clearances (for ease of service and maintenance)

Model

Nortec

GS 50

Nortec

GS 100

Nortec

GS 150

Nortec

GS 200

Nortec

GS 300

Nortec

GS 450

Nortec

GS 600

Overhead

Clearance "A" in ( mm )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

Right Side

Clearance "B" in ( mm )

30 (762)

30 (762)

30 (762)

30 (762)

30 (762)

30 (762)

30 (762)

Floor Stand

Height "C" in ( mm )

26 (670)

26 (670)

17 ( 426 )

17 ( 426 )

17 ( 426 )

17 ( 426 )

17 ( 426 )

Front

Clearance "D" in ( mm )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

36 ( 914 )

Left Side

Clearance "E" in ( mm )

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

Rear Clearance

"F" in ( mm )

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

5.4.1.1

Overall Dimensions and Weight

The overall dimensions and weight of the Nortec GS humidifier are listed below.

Note:

The dimensions and weights shown do not include the floor stand or wall mount bracket. The height of the floor mounting stand (default for Nortec GS 200-600, optional for Nortec GS 50/100/150) is

16.0 in (406 mm). Refer to

"Product Specifications" on page 69

.

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Installation

21

Table 11: Nortec GS Humidifier Overall Dimensions and Weights (includes stands)

Nortec GS

CS/

NX

Model

GS 50-CS/NX

GS 100-CS/NX

GS 150-CS/NX

GS 200-CS/NX

GS 300-CS/NX

GS 450-CS/NX

GS 600-CS/NX

Height

43.3 (1101)

43.3 (1101)

54.6 (1387)

54.6 (1387)

54.6 (1387)

54.6 (1387)

54.6 (1387)

Dimensions in ( mm )

Height

(with stand)

65 ( 1643 )

65 ( 1643 )

70 (1788)

70 (1788)

70 (1788)

70 (1788)

70 (1788)

Width

25.2 (640)

25.2 (640)

28.2 (717)

40.4 (1026)

40.4 (1026)

57.0 (1448)

66.9 (1700)

Depth

21.4 ( 542 )

21.4 ( 542 )

29.0 (738)

29.0 (738)

29.0 (738)

29.0 (738)

29.0 (738)

Net

177 (80)

197 (89)

309 (140)

426 ( 193 )

437 (198)

547 (248)

821 (372)

Weight lb (kg)

Operating

327 (148)

351 ( 159 )

490 ( 222 )

721 (327)

757 ( 343 )

946 ( 429 )

1460 ( 662 )

Nortec GS

MT Models

GS 50 -MT

GS 100 -MT

GS 150 -MT

GS 200 -MT

GS 300 -MT

GS 450 -MT

GS 600 -MT

Height

43.3 (1101)

43.3 (1101)

54.6 (1387)

54.6 (1387)

54.6 (1387)

54.6 (1387)

54.6 (1387)

Dimensions in ( mm )

Height

(with stand)

65 ( 1643 )

65 ( 1643 )

70 (1788)

70 (1788)

70 (1788)

70 (1788)

70 (1788)

Width

25.2 (640)

25.2 (640)

28.2 (717)

40.4 (1026)

40.4 (1026)

57.0 (1448)

66.9 (1700)

Depth

21.4 ( 542 )

21.4 ( 542 )

29.0 (738)

29.0 (738)

29.0 (738)

29.0 (738)

29.0 (738)

Net

161 (73)

181 (82)

289 ( 131 )

406 (184)

417 (189)

498 ( 226 )

772 (350)

Weight lb (kg)

Operating

311 ( 141 )

335 ( 152 )

470 ( 213 )

701 (318)

736 ( 334 )

897 (407)

1411 (640)

Floor

Stand

47.4 (21.5)

47.4 (21.5)

39.7 (18)

41.9 ( 19 )

41.9 ( 19 )

57.3 ( 26 )

59.5 (27)

Floor

Stand

47.4 (21.5)

47.4 (21.5)

39.7 (18)

41.9 ( 19 )

41.9 ( 19 )

57.3 ( 26 )

59.5 (27)

5.4.2

Removing the Shipping Pallet

Figure 8: Removing the Shipping Pallet Screws (compact unit shown)

1. Remove the door panels from the humidifier, and remove and discard the shipping screws that secure the unit to the shipping pallet.

2. Lift the humidifier by its base frame and raise it off the shipping pallet. The unit may now be mounted.

22

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

WARNING!

Heavy object – risk of personal injury, or damage to equipment!

Prevention:

Use an appropriate lifting device to lift the humidifier. Lift the unit from the bottom, and not the side or top panels.

5.4.3

Wall Mounting – Compact Unit Only

(For Nortec GS 50/100) Install the compact humidifier on the wall or other suitable vertical mounting

surface as follows. Refer to

Figure 9 on page 23

.

1. Check that the selected mounting location provides adequate clearances for maintenance, and is

at an easily servicable height. Refer to

"Clearances" on page 20

.

2. Ensure that the mounting surface has adequate structural strength to support the operating weight of

the unit – refer to

"Overall Dimensions and Weight" on page 21

for weights. Condair recommends mounting to 3/4 in (20 mm) thick plywood or equivalent.

3. Setup the mounting bracket: a. Assemble the mounting bracket using the instructions in the accessory box.

b. Locate the mounting bracket at the desired position on the vertical mounting surface. c. Attach the mounting bracket with one 3/8 in (10 mm) lag bolt and washer (not supplied). Use longer bolt if going through drywall or other structural material into the mounting surface.

d. Level the mounting bracket, and mark the locations of the remaining attachment points.

e. Install 3/8 in (10 mm) lag bolts and washers (not supplied) at the attachment points and secure the mounting bracket to the wall.

4. Carefully lift the humidifier by its base frame and raise it off the shipping pallet.

5. Carefully lower the humidifier onto the mounting bracket that is secured to the wall, then install the door panels.

- A -

(option)

- B -

Nortec GS

Figure 9: Mounting, Compact Unit. A - Wall mount , B - Floor mount (optional)

2596645_A_EN_1912_Nortec-GS_IM

Installation

23

5.4.4

5.4.5

Floor Stand Mounting - Compact Unit

(Optional for Nortec GS 50/100) The compact unit may be mounted onto the floor with the floor stand option.

Install the humidifier on the floor stand as follows. Refer to

Figure 9 on page 23

.

1. Ensure mounting location provides clearances for maintenance. Refer to

"Clearances" on page 20

.

2. Remove all the packaging material around the humidifier. Remove the accessory box and open its contents. Assemble the floor stand using the instructions in the accessory box.

3. Make sure that the floor is hard and level, then set the floor stand on the floor (and optionally against a wall or other suitable vertical mounting surface).

Note:

If desired, remove the leveling screws and secure the stand to the floor with 3/8 in (10 mm) bolts and washers (not supplied).

4. Carefully lift the humidifier by its base frame and raise it off the shipping pallet. Gently lower the humidifier on the stand.

WARNING!

Heavy object – risk of personal injury, or damage to equipment!

Prevention:

Use an appropriate lifting device to lift the humidifier. Lift the unit from the bottom, and not the side or top panels.

5. Use 3/8 in (10 mm) bolts and washers to secure the assembly to the floor. Use shims as necessary to ensure a level installation.

Floor Stand Mounting - Full Size unit

The Nortec GS 200-600 must be mounted on the floor stand. The Nortec GS 150 may also be installed directly onto the floor.

Figure 10: Floor Stand Mounting, Full-Size Units. ( Nortec GS 150 and Nortec GS 450 Shown)

Install the full-size humidifier on the stand as follows.

1. Ensure mounting location provides clearances for maintenance. Refer to

"Clearances" on page 20

.

2. Remove all the packaging material around the humidifier. Remove the accessory box and open its contents. Assemble the floor stand using the instructions in the accessory box.

3. Carefully lift the humidifier by its base frame and raise it off the shipping pallet. Gently lower the humidifier on the floor stand.

WARNING!

Heavy object – risk of personal injury, or damage to equipment!

Prevention:

Use an appropriate lifting device to lift the humidifier. Lift the unit from the bottom, and not the side or top panels

4. (Optional) Use 3/8 in (10 mm) bolts and washers to secure the assembly to the floor. Use shims as necessary to ensure a level installation.

24

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Figure 11: Floor Stand Mounting, Securing the Stand to the Floor ( Nortec GS 150 Shown).

5.4.6

5.5

Mounting Checklist

Check the following to ensure that the humidifier has been mounted correctly:

…

…

…

…

Unit installed in the correct location (according to

"Clearances" on page 20

)?

Adequate clearance for servicing unit?

Mounting surface stable, and capable of supporting the full operating weight of the humidifier?

Unit level and secured properly?

Steam Connection

Steam generated by the humidifier can be distributed into a conditioned space through an air handling unit (AHU) using Condair steam distributors, blower packs or Condair SAM-e steam distribution mani folds – refer to their respective manuals for installation details.

Refer to

"Site Requirements" on page 18

for the steam and condensate line installation requirements.

Nortec GS

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Installation

25

5.5.1

Installing the Main Steam Pipe

5

6

12 in (300 mm) *

2

1

3

4

6

12 in (300 mm) *

θ > 2° θ > 10°

θ > 10°

5

Figure 12: Main Steam Line Installation

1 Steam outlet, humidifier

2 Clamp, gear (supplied)

3 Steam pipe, rigid (main) – must rise straight up minimum 12 in (300 mm) above steam outlet before continuing

to steam distributor. Refer to

Table 12 on page 27

for maximum equivalent length of steam line.

4 Cuff, hose (supplied)

5 Steam hose – must have minimum bend radius of 12 in (300 mm), and minimum upslope of 10

°

or minimum downslope of 2 ° to steam distributor. Steam hose must not sag – add condensate drain line, as shown, if necessary.

6 Drain line, condensate – must have minimum downslope of 1.2

° . The trap should be minimum 12 in (300 mm) in diameter, and located minimum 12 in

(300 mm) below the steam distributor or dip in the steam line.

26

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.5.2

Best Practices for Installing Steam and Condensate Lines

Condair recommends that you observe the following best practices for installing atmospheric steam lines and condensate lines.

Steam Line

– Use rigid steam pipe made of copper (MED Type-L) or stainless steel (minimum DIN 1.4301) ex clusively. Steam pipes made of any other materials may adversely affect the operation of the unit, and will void the warranty.

– Refer to

Table 12

for the required minimum internal diameter of the steam pipe. The internal diameter

of the steam pipe can be expanded, but once expanded a reduction in diameter is not permitted, except at the steam distributor.

Table 12: Steam Pipe Diameter

Model

Nortec GS 50

Nortec GS 100

Nortec GS 150

Nortec GS 200

Nortec GS 300

Nortec GS 450

Nortec GS 600

Copper

MED Type

L Nominal

Pipe Size in ( mm )

Stainless

Steel

Nominal

Tube Size in ( mm )

Steam Loss in Condensation

Copper MED Type L lb/ft (kg/m)

Equivalent Steam Line

Length ft ( m )

Max.

Allowable

Backpressure in H2O ( kPa )

1.5 (38)

1.5 (38)

3 (76)

3 (76)

3 (76)

4 (102)

4 (102)

1.75 ( 45 )

1.75 ( 45 )

3 (76)

3 (76)

3 (76)

4 (102)

4 (102)

Uninsulated

0.10 (0.15)

0.10 (0.15)

0.16 (0.24)

0.16 (0.24)

0.16 (0.24)

0.20 (0.30)

0.20 (0.30)

Insulated

0.03 (0.04)

0.03 (0.04)

0.04 (0.06)

0.04 (0.06)

0.04 (0.06)

0.05 (0.07)

0.05 (0.07)

Max.

50 ( 14 )

70 ( 21 )

100 (30)

120 (37)

150 ( 46 )

180 ( 55 )

230 (79)

Recommended

Max.

20 ( 6 )

20 ( 6 )

33 (10)

33 (10)

33 (10)

33 (10)

33 (10)

6 (1.49)

6 (1.49)

10 (2.49)

10 (2.49)

10 (2.49)

10 (2.49)

10 (2.49)

– The backpressure in the line, in addition to the duct static pressure, MUST NOT EXCEED the maximum allowable backpressure, as indicated in the table above.

– The length of the steam line should be kept as short as possible. It should not exceed the maximum equivalent length shown in

Table 12

. Exceeding the maximum length can affect performance of the unit, and may void the warranty. Also refer to

Table 13 on page 28

for equivalent length of typical

steam line fittings.

– Use long radius elbows for steam pipes and avoid 90° bends. This minimizes backpressure and formation of condensation.

IMPORTANT!

When determining the length and routing of steam lines, allowances must also be made for thermal expansion. Allowances must also be made for shrinkage in the length of the steam hose due to aging

– The steam line from the humidifier must lead straight upwards for a minimum of 12 in (300 mm),

before continuing on to the steam distribution system – refer to

Figure 12 on page 26

. The steam line

must have a minimum upslope of 10°, or a minimum downslope of 2° to the steam distrubutor – refer

to

Figure 13 on page 28

.

– Use only Condair steam hose between the steam outlet on the humidifier and the steam distribu tor. Other types of steam hoses can affect performance of the unit, and may void the warranty. The

minimum bend radius of the steam hose is 12 in (300 mm)

. The steam hose must not sag, and must have a minimum upslope of 10°, or a minimum downslope of 2° to the steam distributor.

– Use short lengths of steam hose to connect the steam line to the humidifier or steam distributor.

Secure the steam hoses with gear clamps.

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Installation

27

CAUTION!

Risk of damage to the gear clamp.

Do not over-tighten the gear clamp. The maximum torque value for gear clamps is 16 in·lbs

(180 N·cm).

– Do not combine multiple steam lines, except at the steam distributor. Use a Condair adaptor specifically designed for that purpose, and only if the humidifiers connected to the adaptor operate in parallel.

– To minimize formation of condensation, the steam pipe must be insulated with a minimum of 1 in

(25 mm) of pipe insulation over its entire length.

– The weight of the steam pipe must be supported so there is no load on the humidifier.

WARNING!

Risk of severe burns from contact with hot steam vapors!

Restrictions in the cross-section of the steam line will cause excessive backpressure in the steam tank when the unit is operating, which may cause unexpected release of hot steam va pors. Bare skin exposed to the hot steam vapors can result in severe burns. In addition, excess backpressure also affects performance of the unit.

Prevention

: Observe the following :

• Upon completion of the installation, purge the steam line to remove any contaminants and installation materials.

• The steam hose (if used) must not have any kinks or other restrictions.

To prevent condensate pockets, the steam line must not sag. If necessary, support the steam line with pipe clamps, trough, or wall brackets, and install a condensate drain at the lowest point in the steam line.

DO NOT install a shutoff valve (e.g. a manually operated shutoff valve, solenoid valve, etc.) in the steam line.

Table 13: Equivalent Length of Typical Steam Line Fittings

Nominal Tube Size in ( mm )

1.75 ( 45 )

3 (75)

4 (100)

Steam Line

Standard 90

°

Elbow ft ( m )

3.5 (1.1)

5 (1.5)

8 (2.4)

Standard 45

°

Elbow ft ( m )

1.75 (0.5)

2.5 (0.8)

4 (1.2)

Side-Outlet Tee ft ( m )

7 (2.1)

11 (3.4)

15 (4.6)

Condensate Drain Line

12 in

(300 mm)

2 in

(50 mm)

Minimum Upslope

10 o

Minimum Downslope

2 o

½ in

(12 mm)

12 in

(300 mm)

Min.

12 in (300 mm)

12 in (300 mm)

Min.

12 in (300 mm)

12 in (300 mm)

1 in

(25 mm)

Minimum

Downslope

1.2

o

48 in

(1.2 m)

1 in

(25 mm)

Minimum

Downslope

1.2

o

48 in

(1.2 m)

Figure 13: Steam and Condensate Line

28

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Condensate Lines

– Use 1/2 in (13 mm) Condair condensate hose, or 1/2 in (13 mm) stainless steel pipe or copper pipe for condensate lines and traps.

WARNING!

Risk of severe burns from contact with hot fluids or steam!

The condensate lines may be filled with hot fluids or steam. Bare skin in contact with hot fluids or steam can result in severe burns.

Prevention

: Never plumb the condensate lines to empty into a sink used by personnel. Always connect the lines to a floor drain according to applicable national and local plumbing codes.

– Condensate traps must also be installed at all low points and at horizontal-to-vertical transitions in the steam line. The condensate drain lines should always connect to full-size "Tee" connectors in the steam line. Refer to

Figure 13 on page 28

.

– The condensate lines must have a minimum downslope of 1.2°, with a minimum 12 in (300 mm) diameter condensate trap, and connect to the building floor drain with condensate cooler (if required).

The condensate trap must be at least 12 in (300 mm) below the condensate "Tee" and the steam distributor.

– For a steam line that is longer than 15 ft (4.5 m) up to the maximum recommended length, install condensate lines and traps at regular intervals. The maximum distance between condensate lines for long runs is 15 ft (4.5 m).

– Condensate lines must have individual traps before emptying to a common condensate drain. The common condensate drain must be sized appropriately to handle all the condensate.

– Make sure that the condensate lines allow proper flow.

– Do not over-tighten the hose clamps on the condensate lines.

IMPORTANT!

Before starting up the unit, prime the condensate traps with water.

An online-sign.com production sign ref st151432911270

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29

5.5.2.1

Common Steam and Condensate Line Installation Mistakes

Some common steam and condensate line installation mistakes are shown in

Figure 14 on page 30

.

5

1

Y

3, 5

4

2, 5

D

L

>10°

>1.2°

Figure 14: Common Steam and Condensate Line Installation Mistakes

1 The condensate trap is located less than the required minimum 12 in (300 mm) below the steam distributor.

2 No condensate trap is installed at the horizontal-to-vertical transition.

3 The steam line does not run straight up for the required minimum 12 in (300 mm) before continuing on to the steam distributor.

4 Steam line is not sloped – upslope minimum 10° downslope minimum 2 ° is not maintained.

5 The required long radius elbow (for rigid pipe) is not used.

D Diameter of condensate trap (minimum) is 12 in (300 mm).

L Vertical steam line distance from the humidifier is 12 in (300 mm) (minimum).

Y Condensate trap distance below the steam distributor is 12 in (300 mm) (minimum).

30

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.5.3

Steam Connection Checklist

Check the following to ensure that the steam connections for the humidifier have been installed correctly:

Steam Line

…

…

…

…

…

…

…

…

…

…

…

…

…

Observed all best practices?

Steam pipe sized correctly?

The steam line does not exceed maximum equivalent length listed in

Table 12 on page 27

?

Long radius elbows (for rigid pipes) used?

Backpressure in the line combined with duct static pressure does not exceed 6 in H2O (1.49 kPa) for compact units, or 10 in H2O (2.49 kPa) for full-size units?

Steam line runs straight up from the humidifier steam outlet for at least 12 in (300 mm) before bend?

Steam line has minimum upslope of 10°, or minimum downslope of 2 °?

Steam line does not reduce in diameter except at the steam distributor; and condensate line installed just before the restriction?

Steam lines do not merge except at the steam distributor through a Condair adaptor?

Steam line does not sag?

Steam connections secured with clamps? Clamps torqued adequately?

Allowances made for thermal expansion of rigid pipes, and shrinkages of steam hose?

Steam line insulated over its entire length?

Condensate Line

…

…

…

…

…

…

…

…

Local regulations on drain water temperature requirements have been satisfied?

Condensate traps installed at all low points, and at horizontal-to-vertical transitions in the steam line?

Condensate lines in the steam line always connect to full-size "Tee" connectors?

Condensate traps have a minimum loop diameter of 12 in (300 mm) and installed at least 12 in

(300 mm) below the condensate "Tee" and the steam distributor?

All condensate lines have a minimum downslope of 1.2°?

Condensate traps installed at regular intervals on long runs exceeding 15 ft (4.5 m)?

Condensate lines have individual traps before emptying to a common condensate drain? Condensate drain sized appropriately to handle all the condensate?

Condensate traps primed with water?

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5.6

Water Connections

Refer to

"Site Requirements" on page 18

for the water supply and drain requirements. Read

"Water Connection

Requirements" on page 34

, and perform the water connections as shown in

Figure 15 on page 32

.

5.6.1

Water Connections

1

2

8

3

1

4

5

4

5

2

8

3

6

6

7

7

Figure 15: Water Supply Connections. Nortec GS 50/100 and Nortec GS 150 shown

1

2

Inlet, fill valve – 3/4 in BSPP

(plastic thread)

Adaptor, 3/4 in BSPP to 1/2 in NPT

(supplied)

3 Supply line, water – minimum 1/2 in

(13 mm) diameter

4 Outlet, drain, 7/8 in (22 mm) O.D.

(unthreaded)

5 Clamp, hose (not supplied)

6 Hose, drain, 7/8 in (22 mm) I.D. (not supplied) – minimum downslope of

1.2

° , and must not touch sides or bottom of funnel

7 Funnel, air gap – should be minimum

2-1/2 in (64 mm) diameter, and drain pipe connected to it should have minimum diameter of 1-1/2 in (38 mm).

8

Must be located within 3 ft (1 m) from the unit (or according to code)

Double check valve backflow preventer

(supplied by others)

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Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.6.2

Installing Exhaust Condensate Drain Line (CS/NX Model Only)

Install the exhaust condensate drain line (CS/NX model only) as shown in

Figure 16

.

4

3

2

- B -

1

3

4

2

- A -

1

- C -

4

6

2

5

Compact Full-Size

Figure 16: Exhaust Condensate Drain Line.

A - Nortec GS 50-100 , B - Nortec GS 150 , C - Nortec GS 200-600 .

1 Trap, internal condensate (Nortec GS 50-150) – primed with water

2 Hose, drain, exhaust condensate – (not supplied) must have minimum downslope of 1.2

° , and must not touch sides or bottom of funnel.

Use Condair condensate hose.

3 Funnel, air gap – funnel must be located below the condensate outlet and within 3 ft (1 m) of the unit (or according to code)

4 Outlet, condensate drain

5 Floor stand (default for Nortec GS 150-600)

6 Bracket, p-trap to floor stand

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5.6.3

Water Connection Requirements

Water and drain connections must meet the following requirements:

– All water supply and drain connections must be installed to local plumbing codes.

– For ease of maintenance, a water shutoff valve and union fitting must be installed in the supply line before the humidifier.

– If a water filter is used (optional, but recommended), it must be installed as close as possible to the humidifier.

– Prevent water from the tank from re-entering the water supply. Install a double check valve back flow preventer and secure it along the water supply line to the unit. Adhere to all local and national installation regulations.

– Water supply surge-protected and pressure regulated to 30-80 psig (207-550 kPa).

– The water supply piping to the humidifier should be minimum 1/2 in ( 13 mm ) in diameter with a

1/2 in NPT female end. The water supply pipe can be made of plastic (pressure-proof to 100 psig

(690 kPa) and certified for use with drinking water systems), copper (not permitted for DI water) or stainless steel (minimum DIN 1.4301).

CAUTION!

Risk of damage to the plastic threads in the fill valve!

Prevention:

Hand-tighten the NPT adaptor to the fill valve.

– The air gap funnel in the floor should be located away (max 3 ft ( 1 m ) from the unit) from the control cabinet to keep any rising steam from damaging the electrical components in the control cabinet.

The diameter of the air gap funnel should be minimum 2-1/2 in (64 mm).

– The drain pipe connecting the air gap funnel to the building drain should have a minimum inner diameter of 1-1/2 in (38 mm ). Use stainless steel (minimum DIN 1.4301) or copper pipe (not permit ted for DI water).

– The drain hose from the humidifier should be as short as possible, and empty into the air gap funnel without touching its sides or bottom. Drain hose must have a minimum constant downslope of 1.2° and must be secured with a hose clamp. The drain hose must be rated for 212 °F (100 °C).

– Install the condensate drain hose (CS/NX model only), and secure it with a hose clamp – refer to

Figure 16 on page 33

. The hose must be rated to 212 °F (100 °C). Connect the hose to a condensate neutralization device, if required by local code, before connecting the hose to a drain.

– Upon completion of installation, disconnect and flush the water supply and drain lines to clear out any debris in the lines. Check the strainer in the fill valve is free of all debris. Reconnect the lines.

– Prime the condensate trap inside the unit (CS/NX model only) with water.

Drain water cooling reduces the drain water exiting the unit to 140 ˚F (60 ˚C) .

34

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.6.4

Water Connections Checklist

Check the following to ensure that the water connections for the humidifier have been installed correctly:

…

…

…

…

…

…

…

…

…

…

…

…

…

…

…

Water quality meet the requirements listed in

Table 7 on page 18

?

Shutoff valve and union fitting installed in supply line?

Double check valve backflow preventer is installed along the water supply line to the unit? Is the double check valve backflow preventer installed, adhering to all applicable local and national instal lation regulations?

Water supply piping to humidifier minimum 1/2 in ( 13 mm ) diameter? Plastic pipe (pressure-proof and certified for use with drinking water systems), copper or stainless steel if using potable drinking water or RO water? Plastic or stainless steel pipe if using DI water?

5 μm water filter (optional, but recommended) installed in the supply line close to the humidifier?

Water supply temperature 34-60 °F (1-15 °C)? Do not exceed 77

˚

F ( 25

˚

C).

Water supply surge-protected and pressure regulated to 30-80 psig (207-550 kPa)?

Check for leaks in the water supply line?

Air gap funnel in the floor located away (max 3 ft ( 1 m ) from the unit) from the control cabinet in the humidifier?

Air gap funnel minimum 2-1/2 in (64 mm) in diameter?

Drain pipe between air gap funnel and building drain have a minimum internal diameter of 1-1/2 in

(38 mm )? Copper or stainless steel pipe if using potable drinking water or RO water? Stainless steel pipe if using DI water?

Drain hose from humidifier empty into the air gap funnel without touching its sides or bottom? Drain hose have a minimum constant downslope of 1.2°, and secured with hose clamp? Drain hose rated for 212 °F (100 °C)?

Condensate hose installed (CS/NX model only)? Hose rated for 212 °F (100 °C)?

Condensate trap inside unit primed with water?

Water supply line and drain lines flushed? Strainer in the fill valve free of debris?

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5.7

Combustion Air Connection

Combustion air provisioning must meet the requirements stated in Sections 5.3 of the National Fuel Gas

Code (ANSI Z223.1) in the USA, or Sections 7.2, 7.3, 7.4 of the CAN/CGA B149 Installation Codes in

Canada, or applicable provisions of the local building codes

Excess exposure to contaminated combustion air will result in safety and performance-related problems with the humidifier. Known contaminates include: halogens, ammonia, and chlorides, excessive dust, lime or dirt. Excess exposure to these contaminants will also affect the on-board electronics. Contact

Condair if you have any questions. If necessary, isolate the unit from the contaminated space.

Refer to

"Site Requirements" on page 18

for combustion air requirements.

Select the type of installation required for combustion air – refer to

"Space Air Installation"

or

"Sealed Combustion

Installation"

, as applicable.

5.7.1 Space Air Installation

This type of installation draws combustion air from inside the room/space where the humidifier is installed.

Refer to

Table 14 on page 36

for the required minimum cross-sectional area for the fresh air intake in the room/space. An appropriate opening to the outside of the building must be provided to allow fresh combustion air into the space. Adhere to all local and national installation regulations.

Note:

Condair requires installing an elbow (fitted with a screen) at the intake air inlet on all Nortec

GS 150-600 (full size) units to prevent dirt and debris from being drawn into the combustion chamber.

Seal the connection with silicone sealant. Keep the area around the air intake clear of all obstructions.

Refer to

Figure 18

. Refer to

Table 15 on page 37

for outside diameter of elbow.

Table 14: Room Fresh Air Intake Cross-sectional Area

Model Minimum Cross-sectional Area

in

2

( cm

2

)

Nortec GS 50 8 (50)

Nortec GS 100

Nortec GS 150

Nortec GS 200

Nortec GS 300

Nortec GS 450

Nortec GS 600

13 (88)

18 (120)

23 (150)

35 ( 225 )

53 (350)

71 (460)

1

2

5.7.2

Figure 17: Space Air Installation – GS 150-600

1 Elbow, fitted with screen (not supplied).

2 Inlet, intake air (full-size unit)

Sealed Combustion

Installation

A sealed combustion installation draws fresh combustion air from the outside. Sealed combustion re quirements for combustion air are governed by national and local installation codes, as stated at the beginning of this section. The vent diameter listed in

Table 15

must be maintained over the entire length of the vent. Adhere to all local and national installation codes.

36

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

In addition, refer to

"Sealed Combustion Installation Requirements" on page 37

.

Table 15: Air Intake Vent Diameter

Nortec Model

GS 50*

GS 100

GS 150

GS 200

GS 300

GS 450

GS 600

* Requires 3 in (75 mm) adapter

Intake Vent Diameter in (mm)

2 (50)

3 (75)

4 (100)

6 (150)

Figure 18

shows the sealed combustion connection for the compact and full-size Nortec GS humidifiers.

3 ft (1.0 m)*

6

4

5

3

12 in (0.30 m)

*

1

12 in (0.30 m)

*

4

7

2

Figure 18: Sealed Combustion Connection (compact shown left)

* minimum

1 Terminal, air intake (elbow) – terminal located outside building and facing down (not supplied), 12 in (30cm) from wall.

2 Vent, intake – wrapped with insulation

(not supplied)

3 Inlet, intake air (full-size unit)

4 Exhaust outlet

5 Inlet, intake air (compact unit)

6 Terminal, exhaust ("Tee") – terminal located outside building and opening vertical (not supplied), 12in (30cm) from wall.

7 Adapter, air intake (compact unit)

Sealed Combustion Installation Requirements

In addition to the requirements of the applicable national and local codes for sealed combustion instal lations, the following requirements must also be satisfied:

– The intake vent must not exceed an equivalent length of 100 ft (30 m), except for the Nortec GS

50 using propane gas which is limited to 50 ft ( 15 m ).

Note:

Each 90° bend is equal to 10 ft ( 3 m ) of straight pipe, and each 45° bend is equal to 5 ft (1.5 m) of straight pipe. The intake vent should not have more than six bends.

Nortec GS

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37

5.7.3

5.8

– The intake vent diameter is listed in

Table 15 on page 37

. The vent diameter must remain uniform

over the entire run.

– Intake vent pipes can be made of stainless steel, ABS, PVC, CPVC or poly-propylene. All joints and seams must be sealed with an appropriate sealant.

IMPORTANT!

Route the intake vent so that it does not obstruct access to any of the services to the humidifier. On the compact unit, make sure that the maintenance access for the drain pump is not obstructed.

– The intake vent must be supported every 5 ft (1.5 m), and at every pipe bend.

– An intake (elbow) terminal must be installed on the outside termination of the air intake vent, with the elbow facing down – refer to

Figure 18 on page 37

. The location and spacing between the air intake

terminal and exhaust vent terminal must comply with all local and national regulations, with at least a minimum spacing of 3 ft ( 1 m ) between them.

– At low temperatures, water condensation can occur on the outside of the air intake vent. To prevent this, Condair suggests adding in-line heating and insulation on the intake vent.

Combustion Air Checklist

Check the following to ensure that the combustion air connection for the humidifier has been installed correctly:

…

Combustion air requirements for the type of installation selected meet all national and local regulations?

Space Air Installation

…

…

Fresh combustion air requirements for the room/space (

Table 14 on page 36

and all national and local

regulations) satisfied?

Elbow installed at the intake air inlet on full size units (not Nortec GS 50/100)?

Sealed Combustion Installation

…

…

…

…

…

…

…

All relevant national and local regulations for sealed combustion installation satisfied?

Intake vent length does not exceed an equivalent length of 100 ft (30 m)? If unit is Nortec GS 50 using propane gas, is it limited to 50 ft ( 15 m )? Maximum six bends?

Vent diameter as listed in

Table 15 on page 37

, and uniform over the entire run?

All joints and seams sealed with appropriate sealant?

Intake vent supported?

Spacing between air intake terminal and exhaust vent terminal minimum 3 ft ( 1 m )?

Intake vent heated and insulated in cold climates?

Exhaust Vent Connection

The Nortec GS CS/NX model uses a condensing type exhaust venting system, and must be installed as a Category IV appliance. The MT model can be installed as a Category III or Category IV appliance.

The general requirements and the different exhaust venting types are discussed in

"General Requirements"

.

5.8.1 General Requirements

The exhaust vent system used with the Nortec GS series humidifier must satisfy the following general requirements:

– The exhaust vent systems shall be certified to UL or UL/CSA standard, and meet the installation requirements in Part 7 (Venting of Equipment) of the National Fuel Gas Code (ANSI Z223.1) in the

USA, or Section 7 (Venting Systems and Air Supply for Appliances) of the CAN/CGA B149 Installation

Codes in Canada, or applicable provisions of the local building codes. Any local regulations related to exhaust venting systems must also be adhered to.

38

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

– In applying the codes, refer to the vent system manufacturer's instructions, the local gas supplier regulations, and the specific instructions in this manual.

– This appliance must be installed in compliance with national regulations and codes. The installation must only be performed by a qualified technician who is well versed with these codes and the local requirements of the jurisdiction.

– Proper removal of combustion gases must be assured, and building materials must be protected from degradation by flue gases.

– Never mix venting types. Never use two different manufacturer’s equipment for the same exhaust vent.

– All horizontal exhaust vent runs must maintain a constant minimum upslope of 2 °to prevent accu mulation of condensate.

– All horizontal runs must be adequately supported every 5 ft (1.5 m) to prevent sagging, with support at every bend.

– When an exhaust vent run exceeds 20 ft (6.1 m), insulate the exhaust vent pipe to reduce the amount of condensate that could form in the flue gases.

– When an exhaust vent passes through a cold area or a location that has large amounts of air flow over the vent, insulate the exhaust vent pipe to prevent condensation inside the vent.

– When an exhaust vent passes through walls, floors, and ceilings, proper clearances must be main tained around combustible materials and venting manufacturer's fire stop equipment.

– The exhaust vent shall not pass through any air circulation duct or plenum.

WARNING!

Risk of severe burns from contact with hot exhaust vent!

Prevention:

Install a screen or barrier around the exhaust vent to prevent contact with it.

– Exhaust condensate management is required on all Nortec GS (CS and NX models) installations.

Refer to

"Installation as a C6 Appliance" on page 42

.

IMPORTANT!

Before starting up the unit, prime all condensate traps with water.

– Never vent into an un-lined masonry or concrete chimney unless the chimney is sized and installed according to the provisions of the national fuel code in the USA (ANSI Z223.1) or the Canadian standards (CSA B149).

– A chimney or exhaust vent should extend at least 3 ft ( 1 m ) above the roof, and at least 2 ft (0.6 m) above any ridge within 10 ft (3 m) of the chimney. Local codes apply.The exhaust vent must terminate at a sufficient height above the roof to prevent blockage due to accumulation of snow.

– All exhaust vents must be made of corrosion-resistant materials, and all sealing materials must be tested and approved for exhaust venting systems.

– The exhaust vent must be secured with hangers or pipe straps. All horizontal runs must be adequately supported with hangers or straps to prevent sagging.

– The exhaust vent must not exceed an equivalent length of 100 ft (30 m), except for the Nortec GS

50 using propane gas which is limited to 50 ft (15 m).

– The vent run should be as direct as possible with no more than six elbows in the system.

Note:

Each 90° elbow is equivalent to 10 ft (3 m), and each 45° elbow is equivalent to 5 ft (1.5 m) of straight pipe.

Table 16

lists the diameter of the exhaust vent. The vent diameter must remain uniform over the entire run. Adhere to all local and national installation codes.

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Table 16: Exhaust Vent Details - CS/NX/MT

Model Appliance

Category

Exhaust Outlet Size mm*

Nortec GS 50-CS/NX/MT

Category IV

60

Nortec GS 50 -MT

Nortec GS 100-CS/NX/MT

Nortec GS 100 -MT

Nortec GS 150-CS/NX/MT

Nortec GS 150 -MT

Nortec GS 200-CS/NX/MT

Nortec GS 200 -MT

Nortec GS 300-CS/NX/MT

Nortec GS 300 -MT

Nortec GS 450-CS/NX/MT

Nortec GS 450 -MT

Nortec GS 600-CS/NX/MT

Nortec GS 600 -MT

Category III/IV

Category IV

Category III/IV

Category IV

Category III/IV

Category IV

Category III/IV

Category IV

Category III/IV

Category IV

Category III/IV

Category IV

Category III/IV

80

80

100

100

150

150

Exhaust Vent Diameter in

2

3

3

4

4

6

6

Vent Type

CPVC or 3 in BH

Type BH

(stainless steel) or CPVC

Type BH

(stainless steel) or CPVC

Type BH

(stainless steel) or CPVC

Type BH

(stainless steel) or CPVC

Type BH

(stainless steel) or CPVC

Type BH

(stainless steel) or CPVC

* The exhaust outlet on the CS/NX unit has a female connection (metric size). Each unit is supplied with a metric to imperial adaptor (with internal seals) to accomodate imperial vent sizes.

Sidewall Venting Requirements

The following additional requirements of the National Fuel Gas Code (ANSI Z223.1), or CAN/CGA B149

Installation Codes must be satisfied if the exhaust vent terminates through a sidewall:

– Locate the humidifier as close as possible to the wall that is used for termination of the vent.

– Locate the exhaust terminal at least 3 ft ( 1 m ) above any forced air inlet located within 10 ft ( 3 m ); or at least 4 ft (1.2 m) below, and 4 ft (1.2 m) horizontally from, or 12 in (300 mm) above any door, window, or gravity air inlet into any building.

– Maintain a minimum horizontal clearance of 4 ft (1.2 m) from electric meters, gas meters, regulator and relief equipment.

– Install certified vent terminals at the vent terminations.

– Locate the vent terminal at least 7 ft (2.1 m) above grade when it is adjacent to public walkways.

– Locate the bottom of the vent terminal at least 12 in (300 mm) above grade or ground, or normally expected snow accumulation level. The snow level may be higher on walls exposed to prevailing winds.

– Avoid areas where experience shows that condensate drip may cause problems – such as above planters, patios, or over public walkways, or over an area where condensate or vapor could create a nuisance or hazard, or could be detrimental to the operation of regulators, relief valves, or other equipment. Refer to the vent manufacturer's installation instructions.

– The vent terminal must be installed in the same atmospheric pressure zone as the combustion air inlet for the humidifier. If that is not possible (as in cases of positive or negative room pressures), sealed combustion must be utilized.

40

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Figure 19 on page 41

and

Figure 20 on page 42

show the general types of venting arrangements. These are guidelines only. For the specific venting arrangements refer to

"Installation as a C6 Appliance" on page 42

,

and

"Gas Connection" on page 45

. Adhere to all national or local codes.

1

A

B

2

3

4

12

11

10

9

8

5

6

C

D

7

Figure 19: Vertical Venting (with Optional Sealed Combustion Hookup) – Category III/IV

1 Terminal, air intake – elbow pointed down (for optional sealed combustion vertical hookup)

2 Cap, vent, exhaust – UL/CSA-listed

3 Flashing

4 Air gap – must be maintained to local codes

5 "Tee", condensate

6 Terminal, air intake – 90 ° elbow pointed down, for optional sealed combustion hookup outside

7 Drain, condensate (with trap) – minimum 12 in (300 mm) trap height, and connected to floor drain or condensate pump

8 Inlet, air intake

9 Outlet, exhaust

10 Vent, air intake – for optional sealed combustion horizontal hookup

11 Vent, exhaust, type BH – refer to

Table 16 on page 40

for vent details. All joints air and water-tight. Short horizontal run with slope as shown (recommended, but not required). All horizontal-to-vertical transitions must include a full condensate "Tee" with condensate port and trap.

12 Vent, air intake – for optional sealed combustion vertical hookup

A Horizontal distance between exhaust and air intake: 48 in (1200 mm) if exhaust is below air inlet; 120 in (3000 mm) if above inlet

B Vertical distance between exhaust and air intake: 48 in (1200 mm) if exhaust is below air inlet; 36 in (900 mm) if above inlet

C Air intake distance from wall: 12 in (300 mm) minimum

D Condensate trap distance below exhaust: 24 in (610 mm) minimum

Nortec GS

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Installation

41

8

9

1

7

6

3

5

4

2 ft

(610 mm) *

12 in (300 mm) *.

2

3 ft (1 m)

*

Figure 20: Horizontal Venting (with Optional Sealed Combustion Hookup) – Category III/IV

1 Terminal, exhaust ("Tee")

2 Terminal, air intake (90 ° elbow) – pointed down, for optional sealed combustion hookup

3 Outlet, exhaust outlet

4 Inlet, air intake

5 Vent, air intake – for optional sealed combustion horizontal hookup

6 Drain, condensate (with trap) – minimum 12 in (300 mm) trap height, and connected to floor drain or condensate pump

7 "Tee", condensate

8 Hanger

9 Vent, exhaust, type BH – refer to

Table 16 on page 40

for vent details. All joints air and water-tight. Full condensate "Tee" with

condensate port and trap.

42

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.8.2

Exhaust Vent Installation for CS/NX Model

All vent installations must be in accordance with national and the local regulations.

The exhaust outlet on the unit (CS/NXunits) has a female connection (metric size). Each unit is supplied with a metric-to-imperial adaptor (with internal gaskets) to accomodate imperial vent sizes.

Ensure that the exhaust vent is supported by hangers or pipe straps so that there is no load on the humidifier

5.8.2.1

Installation as a Category III Appliance

The MT model humidifier may be installed as a Category III fan-assisted gas appliance. In addition to

the specific requirements described below, refer to the general requirements in

"General Requirements" on page 38

.

All vent installations must be in accordance with national and local regulations.

5.8.2.2

Installation as a Category IV Appliance

The CS/NX must be installed as a Category IV fan-assisted gas appliance. This is optional for the MT model. In addition to the specific requirements described in this section, refer to

"General Requirements" on page 38

.

To connect the exhaust vent, first insert the adaptor into the exhaust outlet and secure it to the top panel with four sheetmetal screws (supplied) – refer to

Figure 21

. Then slide the exhaust vent into the adaptor

until it bottoms out, and secure it with the clamp built into the adaptor. A sealant is not required.

1

2

3

4

Figure 21: Exhaust Vent Connection – CS/NX Model (Category IV Appliance)

1 Vent, exhaust – CPVC or type BH (CPVC only for Nortec

GS 50-CS/NX)

2 Adaptor, exhaust (metric-to-imperial) – plastic (supplied)

3 Screw, sheetmetal ( × 4, supplied)

4 Outlet, humidifier exhaust

Nortec GS

5.8.2.3

Installation Requirements for Category III/IV Appliances.

The following requirements must be satisfied when the CS/NX/MT model humidifier is installed as a

Category III/IV appliance:

Category III/IV

appliances can be vented vertically or horizontally, and can terminate on a rooftop or sidewall provided they meet the requirements of the National Fuel Gas Code (ANSI Z223.1), or

CAN/CGA B149 Installation Codes. Refer to

Figure 19 on page 41

and

Figure 20 on page 42

. Adhere to vent manufacturer's instructions.

– Refer to

Table 16 on page 40

for vent type and diameter of the exhaust vent for this type of installation.

The vent diameter must remain uniform over the entire run.

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43

Category III

: Type BH or L vent must be used, and must be UL or UL/CSA-listed, and tested to the

ULC-5636 Standard. Special gas vent shall be listed and installed in accordance with the terms of the special gas vent listing, and the manufacturer's instructions.

Category IV

: The CS/NX model humidifier can be installed with type BH or plastic vents. Plastic pipe (CPVC certified to ULC-S636) is preferred. Type BH vent, if used, must be UL or UL/CSA-listed.

Note:

The GS 50-CS/NX must only use CPVC plastic pipe. The recommended manufacturer for

CPVC plastic pipe is IPEX Inc.

– The following is a list of recommended stainless steel type BH vent manufacturers: a. Flex-L International Inc.

c. Heat-Fab Inc.

b. FasNSeal d. Z-Flex

– The exhaust vent must not connect to a common vent that is shared with any other natural gas ap pliance or power-assist appliance.

– The exhaust vent must not share a chimney flue servicing an appliance designed to burn solid fuel.

– All joints must be sealed using a sealant recommended by the vent manufacturer.

– The maximum operating flue temperature is:

Category III

: 350 ºF (178 °C). Normal operating temperature is 300 ºF (150 °C).

Category IV

: 160 ºF (71 °C). Normal operating range is 120-140 ºF (49-60 °C).

– The exhaust vent must have a minimum equivalent length of 10 ft (3 m), and must not exceed an equivalent length of 100 ft (30 m), except for the Nortec GS 50 using propane gas which is limited to 50 ft (15 m). The pipe diameter must remain uniform over the entire run. The vent run should be as direct as possible with no more than six elbows in the system. Each 90° elbow is equivalent to

10 ft (3 m), and each 45° elbow is equivalent to 5 ft (1.5 m) of straight pipe.

– Exhaust vents used in sealed combustion applications must not exceed an equivalent length of 100 ft

(30 m), except for the Nortec GS 50 using propane gas which is limited to 50 ft (15 m).

Category III

: The exhaust vent will be hot. Prevent burns by installing a screen or barrier around the exhaust vent to prevent contact with the vent.

Category IV

: During normal operation, a Category IV appliance will create exhaust condensate.

Install condensate drain lines according to vent manufacturer's instructions every 15 ft (4.5 m) on all horizontal runs, and at every horizontal-to-vertical transition. Install a full "Tee" with condensate port and trap at all horizontal-to-vertical transitions. The condensate trap must be minimum 12 in

(300 mm) in diameter. Refer to

Figure 19 on page 41

or

Figure 20 on page 42

.

Category IV

: Install condensate neutralizer, if required by local code.

5.8.3

Exhaust Vent Checklist

Check the following to ensure that the exhaust vent for the humidifier has been installed correctly:

…

…

…

…

…

Exhaust vent installed to meet all national and local codes, vent manufacturer and Condair require ments?

Proper clearances maintained between exhaust vent and combustible materials?

Exhaust vent diameter as listed in

Table 16 on page 40

, and uniform over the entire run?

Exhaust vent length does not exceed an equivalent length of 100 ft (30 m)?

If unit is a Nortec GS 50 using propane gas, is it limited to 50 ft (15 m)? Maximum six elbows in the exhaust vent?

E xhaust vent secured properly with hangers or pipe straps?

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Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.9 Gas Connection

Gas piping must meet the requirements of the National Fuel Gas Code (ANSI Z223.1) in the USA, or

CAN/CGA B149 Installation Codes in Canada, or applicable gas supply pressure requirements of the local building codes.

Refer to

"Site Requirements" on page 18

for the gas supply requirements. For gas connection sizes refer to

on page 20

. In addition, refer to

"Gas Connection Requirements" on page 45

.

IMPORTANT!

Tampering with the gas valve without the express consent of Condair will void the warranty.

5.9.1 Gas Connection, Compact and Full-Size Unit

1

5

3

2

4

5

3

Nortec GS

1

2 4

Figure 22: Gas Connection

1 Inlet, gas, NPT female (full-size unit) – see note below

2 Fitting, union (not supplied)

3 Valve, manual gas shutoff (not supplied)

4 Trap, sediment (not supplied)

5 Test port (not supplied)

Note:

For Nortec GS 450 and Nortec GS 600 only, the gas line will require a 1-1/4 to 1 in NPT adaptor

(not supplied) to connect to the inlet gas connection on the unit.

Note:

Condair recommends the installation of a gas meter (supplied by others) at the gas supply line.

Gas Connection Requirements

In addition to the requirements of the applicable national and local codes for gas connections, the fol lowing requirements must also be satisfied:

– A certified manual gas shutoff valve must be installed immediately upstream from the humidifier.

Refer to

Figure 22

. Thermally actuated gas shut-off device may also be installed upstream from the humidifier. Install the device following all local codes and regulations.

– For gas inlet size and gas line size refer to

"Gas Line Size" on page 20

.

– If black pipe is used, a sediment trap must also be installed immediately upstream from the humidifier.

IMPORTANT!

Route the gas line so that it does not obstruct access to any of the services to the humid ifier. On the compact unit, make sure that the maintenance access for the drain pump is not obstructed.

– DO NOT use teflon tape on gas line pipe threads. A flexible sealant suitable for use with natural gas and propane gas is required.

– All gas piping must be adequately supported to prevent any strain on the humidifier gas connection.

– Upon completion of the gas installation, perform the

"Gas Leakage Test" on page 46

.

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45

5.9.2 Gas Leakage Test

DANGER!

Risk of explosion and fire!

Prevention:

NEVER use an open flame to check for gas leaks. Risk of injury, death or property damage. Use a commercial soap solution or a gas sniffer to check for leaks.

CAUTION!

Risk of damage to the gas valve!

Prevention:

Before performing the leakage test described below, close the manual gas shutoff valve at the humidifier to isolate the gas valve from system pressure. Failure to do so may dam age the gas valve, and will void warranty.

1. Close the manual gas shutoff valve at the humidifier.

2. Pressurize the gas supply line to a maximum of 14 in H2O (3.5 kPa), and test all gas connections external to the humidifier for leaks using a commercial soap solution or a gas sniffer. Seal all leaks before operating the humidifier.

3. After completing the leakage test, de-pressurize the gas supply line BEFORE opening the manual gas shutoff valve.

5.9.3 Gas Connection Checklist

Check the following to ensure that the gas connection for the humidifier has been installed correctly:

…

…

…

…

…

…

…

Certified manual gas shutoff valve installed immediately upstream from the humidifier?

Thermally actuated gas shut-off device may be installed on the gas line, before the humidifier. In stalled the device following all local codes and regulations?

Sediment trap installed (if using black pipe)?

Gas pipe routing allow clear access to other service connections at humidifier?

Gas piping adequately supported?

Gas leakage test completed, and all leaks fixed?

De-pressurize gas supply line after leak test?

46

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.10 Humidity Control Systems

5.10.1 Control Device Locations

The following schematic describes a potential system setup with respect to control devices. Refer to

Figure 23 on page 47

.

Δp

φ max

φ

φ

1

2

3

1

Figure 23: System Setup Schematic

1 Humidistat or humidity sensor 2 High limit humidistat or humidity sensor

3 Switch, air proving

Notes

:

Locate the air proving switch in the same duct as the humidifier’s distributor so that it can sense air flow (or lack thereof).

Locate the high limit humidistat downstream of the humidifier’s distributor so that it can sense a duct that is over-humidified. Recommended setting is 85% RH. Locate it downstream of the distribu tor – at least 5x the absorption distance away. If the absorption distance is not known, locate it at least 10 ft (3 m) downstream from the distributor. Can be a humidistat (modulating or On/Off), or a humidity sensor.

Humidity sensors and humidistats can be modulating or On/Off. Preferred location is in the return duct, as the supply air is well mixed with the room air at this location. Avoid placing near discharge diffuser, near doorways, in sunlight, or in airflow “dead-zones”.

5.10.2 Permissible Control Signal Inputs

Table 17

shows the different permissible control signal inputs the Nortec GS humidifier can handle.

Table 17: Permissible Control Signal Inputs

Humidity Control with External Con troller Control Signals

Humidity Control with Internal PI

Controller Humidity Sensor Signals

0-5 VDC (potentiometer 135-10kΩ)

1-5 VDC

0-10 VDC

2-10 VDC

0-20 VDC

0-16 VDC

3.2-16 VDC

0-20 mA

4-20 mA

Humidistat (24 V On/Off)

0-5 VDC (potentiometer 135-10kΩ)

1-5 VDC

0-10 VDC

2-10 VDC

0-20 VDC

0-16 VDC

3.2-16 VDC

0-20 mA

4-20 mA

Digital Inputs (via Modbus,

BACnet IP/MSTP slave)

BACnet IP

BACnet MSTP

Lonworks (Option)

BACnet MSTP BTL Certified (Option)

BACnet IP BTL Certified (Option)

Nortec GS

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47

5.11

Electrical Connections

Refer to

"Site Requirements" on page 18

for the electrical requirements.

Install the electrical connections according to the wiring diagram(s) (

Figure 24 on page 49

, and

Figure 25 on page 50

, as applicable) and the instructions for

"External Connections" on page 51

.

For connecting multiple Nortec GS humidifiers, refer to

"Connecting Multiple Units Using Linkup" on page 56

.

5.11.1 General

Safety

The electrical installation work requires removal of the access panels in the humidifier. Observe the following safety precautions:

DANGER!

Risk of electric shock!

The Nortec GS humidifier is mains powered. Live parts may be exposed when the access panels are removed. Touching live parts may cause severe injury or even death.

Prevention

: The Nortec GS humidifier must be connected to the mains only after all installa tion work has been completed, checked for correct workmanship, and the access panels are installed and fastened securely.

CAUTION!

Electrostatic discharge (ESD)!

The electronic components inside the humidifier are sensitive to electrostatic discharge

(ESD).

Prevention:

Take appropriate measures to protect the electronic components inside the unit against damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.

All electrical installation work must be performed only by a licensed electrician authorized by the customer. It is the customer’s responsibility to verify qualifications of the personnel.

The electrical installation must be performed according to the wiring diagrams in this manual, the instructions in this section, as well as applicable national and local codes.

Make sure that the main power cable is properly grounded through the ground lug inside the control cabinet. When installed, the appliance must be electrically grounded in accordance with local codes or, in the absence of local codes, with the National Electrical Code (ANSI/NFPA70) in the USA, and/or CSA C22.1 Electrical Code in Canada.

Field wiring from the humidistat to the humidifier and between devices must be shielded minimum

18 AWG, and shall conform with temperature rise limitation of 63 °F (35 °C) for Type-T wire.

All cables must lead into the unit, via appropriate strain relief connectors, and be secured with clamp straps.

Make sure the cables are secured, and do not rub on any components or become a tripping hazard.

Adhere to national and local codes for maximum cable length and required wire sizes for cables.

48

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.11.2

Wiring Diagrams

5.11.2.1 Nortec GS - All Units

Legend:

Wire Colors

R - Red

W - White

Bk - Black

Bl - Blue

Br - Brown

O - Orange

Y - Yellow

Gr - Green

Gr/Y - Green & Yellow

CONTROL SIGNAL

CONNECTIONS

1 2 3 4 5 6 7 8 9

Low voltage terminal strip

Y R R Y R R Bk

EXTERNAL

INTERNAL

Unit ON Steam Service Error

Remote Fault PCB

PRIMARY VOLTAGE

CONNECTION

EXTERNAL

INTERNAL

Br

L N

Gr/Y

Bl

2

On/Off

Switch

1

6 A

R

Transformer

24V

4

3 Gr/Y

2 1

S1

Tank

Temp

Float Board

ON CTS

Stack

Hi-Limit

Tank

Hi-Limit

J1

Bk R Br W Gr

Fill 1

Fill 2

S

S

Bk

R

Bk

W

3 or 4-Burner

Units Only

Air Pressure

Switches

Bl

R

W

Bk

Gr

R

W

Bk

Gr

Gr

W

Br

R

Bk

J1

float

J10

Y

R

Gr

R

Gr/Y

Y

R

Br

Gr/Y

R W Bl

Ignition

Module 1

J7

pwm1

J17

fill 1,2,3

Gas Valve1

Spark

Igniter

DRIVER

BOARD #1

Bk

R

J14

pmp_fre drn_blower

R

R

R

J12

power a/p

J2

JP1

ignition1

J5

ignition2

J6

R

Bk

R W R W

Bk

Bk

Bk

Gr

R

Bk

Gr

Bk

R

Bk

Gr

R

O

M

M

Drain Valve

(optional)

Drain

Pump

Br

Gr/Y

R W Bl

Gas Valve2

Ignition

Module 2

Spark

Igniter

For Nortec GS 50, 100, 200 models see Note 1

2-Burner

Units Only

Note 1

For Nortec GS 50, 100, 200 models rectifier is required for each gas valve.

R

Br

_

+

Rectifier

Gr/Y

Bk

R W Bl

Ignition

Module

SIM card

J1

ACC

J3

JP4

JP7

battery

INTEGRATED

CONTROL

BOARD

JP8

JP11

Linkup

J10

J12

J14

J16 J15

R

Bk

Gr

Gr

Bk

U U U

U

Blower 1

L1

Gr

Bk

W

R

1

PS -

PWM

GND

HS out

PS +

L2

M

Blower 2

L1

Gr

Bk

W

R

1

PS -

PWM

GND

HS out

PS +

L2

M

2-Burner

Units Only

Blower

Relay

R

8 5 1 6 2

Bk

Gr/Y

Gr/Y

7

Bl

3 4

Br

3 or 4-Burner

Units Only

Continued on next wiring diagram

A

3 or 4-Burner

Units Only

Continued on next wiring diagram

B

3 or 4-Burner

Units Only

Continued on next wiring diagram

C

3 or 4-Burner

Units Only

Continued on next wiring diagram

D

Figure 24: Wiring Diagram - Nortec GS 50/100/150/200/300/450/600

JP4 Jumper – for activating the termination resistor for Modbus or BACnet MSTP network.

J6 Connector, Modbus (RS485 interface)

JP7 Jumper – for activating Modbus or BACnet MSTP communication via connector J6.

JP8 Termination, Linkup system

J10 Connector, Linkup

Nortec GS

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49

5.11.2.2 Nortec

GS - 450/600

Figure 25

shows the supplementary wiring diagram for the Nortec GS 450 and Nortec GS 600. The con -

nections are carried over from

Figure 24 on page 49

.

Legend:

Wire Colors

R - Red

W - White

Bk - Black

Bl - Blue

Br - Brown

O - Orange

Y - Yellow

Gr - Green

Gr/Y - Green & Yellow

Continued from previous wiring diagram

C

Continued from previous wiring diagram

B A

Continued from previous wiring diagram

D

S1

2 1

ON CTS

Fill 3

Fill 4

S

S

Bk

R

Bk

W

Bl

R

W

Bk

Gr

R

W

Bk

Gr

Gr/Y

Y

J1

float

J7

pwm1

J10

DRIVER

BOARD #2

J17

fill 1,2,3

J9

ntc

J12

power a/p

J2

JP1

ignition1

J5

R

J14

pmp_fre drn_blower

R

J13

24Vout ignition2

J6

R W R W

Bk

R

Bk

Gr

Br

Gr/Y

R W Bl

Ignition

Module 3

Gas Valve3

Spark

Igniter

Br

Gr/Y

R W Bl

Ignition

Module 4

Gas Valve4

Spark

Igniter

4-Burner

Units Only

Blower 3

L1

Gr

Bk

W

R

1

PS -

PWM

GND

HS out

PS +

L2

M

Blower 4

L1

Gr

Bk

W

R

1

PS -

PWM

GND

HS out

PS +

L2

M

Gr/Y

Gr/Y

4-Burner

Units Only

Figure 25: Wiring Diagram - Nortec GS 450/600

50

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.11.3

External Connections

This section describes the different external control signal and power connections to the Nortec GS humidifier.

CAUTION!

Risk of improper operation, or damage to equipment and property!

Prevention:

Before disconnecting the control signal cables, tag all wires. Reconnect all wires prop erly after servicing.

5.11.3.1 External Security Loop

The external security loop consists of dry contacts of the external monitoring devices (for example, ventilation interlock, high limit humidistat, air proving switch, etc.). Connect the external safety devices in series to pins "1" and "2" in the low voltage terminal strip. Refer to

Figure 24 on page 49

and .

IMPORTANT!

Limit the length of the 24 V security loop (safety chain) .

IMPORTANT!

A high limit humidistat is highly recommended to prevent over-humidification and potential damage to property.

IMPORTANT!

Install a jumper between pins "1" and "2" in the low voltage terminal strip if no exter nal On/Off devices are connected to the security loop.

The connecting cables must lead into the control cabinet through a cable gland or grommet.

CAUTION!

Risk of damage to internal components!

Prevention:

DO NOT apply voltage to low voltage terminal strip pins "1" and "2" through the con tacts of the external On/Off devices.

6

24 VAC

Security Loop

GND

CH 1

CH 2

+10 VDC

GND

FTBD

X-Vent

4

5

2

3

6

7

8

9

1

5

K

4

” p

3 2

Æ

1

Figure 26: External Security Loop Connections

1 Blower pack

2 Humidistat, On/Off

3 Humidistat, high limit

4 Switch, air proving

5 Interlock, ventilation

6 Jumper (installed if no devices connected to security loop)

Nortec GS

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51

5.11.3.2

Modulating Demand or Humidity Signal

Connect an external humidity sensor input or direct demand modulating input to pins "3" and "4" in the

low voltage terminal strip. Refer to

Figure 24 on page 49

and . The permissible control signal input values

are shown in

Table 17 on page 47

.

Do not connect multiple modulating signals to the same modulating input on the humidifier. If neces sary, connect the second modulating signal to pin "5" and "3", using pin "3" as common. Make sure that

Control Channels is set to "Dual" in the control software to utilize the second modulating signal – refer to the Operation and Maintenance Manual.

Alternately, transducer signals or demand signals can be written to the humidifier via a valid digital com munication protocol.

The signal cable must lead into the control cabinet through an appropriate strain relief connector. If a shielded signal cable is used, connect the shielding to pin "3".

CAUTION!

If the shielding of the signal is already connected to a potential or a grounded conductor, do not connect it to pin "3".

24 VAC

Security Loop

GND

CH 1

CH 2

+10 VDC

GND

FTBD

X-Vent

1

5

6

7

2

3

4

8

9

1 2

Figure 27: Modulating Demand or Humidity Signal Connections

1 Modulating demand or humidity sensor signal

2 Modulating high limit demand or humidity sensor signal (additional, for Dual channels)

52

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.11.3.3

On/Off Humidistat Signal

If an On/Off humidistat is used, connect the signal cable to terminal pins "4" and "6" in the low voltage terminal strip. Refer to

. Set Control Mode must be set to "On/Off" in the control software – refer to the

Operation and Maintenance Manual.

IMPORTANT!

When connecting a 24 VDC On/Off humidistat, jumper JP2 on the driver board must be set to 24 V (so that pin "6" will output 24 VDC).

Note:

By default the jumper JP2 is set to 10 VDC, so that the output can also be used for test purposes.

24 VAC

Security Loop

GND

CH 1

CH 2

+24 VDC

GND

FTBD

X-Vent

1

4

5

6

2

3

7

8

9

1

Figure 28: 24 V On/Off Humidistat Connection

1 Humidistat, 24 VDC On/Off

5.11.3.4

Full Tank Blowdown Signal Connection

If an external full tank blowdown signal is used, connect the 24 VAC input signal to pins "1" and "8" in

the low voltage terminal strip. Refer to

.

24 VAC

24 VAC

Security Loop

GND

CH 1

CH 2

+10 VDC

GND

FTBD

X-Vent

5

6

7

2

3

4

8

9

1

Figure 29: Full Tank Blowdown Signal Connection

5.11.3.5

Remote Fault PCB Connections

The remote fault PCB (printed circuit board) in the humidifier has the following four dry relay contacts for

remote display of humidifier status and fault conditions. Refer to

Figure 30

for the relevant terminal contacts.

Nortec GS

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53

Error – this relay can be wired to open (NC) or close (NO) when a fault is detected by the humidifier controls.

Service – this relay is activated when the set maintenance interval elapses. It can be wired to open

(NC) or close (NO) when a warning appears on the touchscreen panel of the humidifier and the status LED turns yellow in color.

Note:

This relay can be configured in the control software to indicate status updates or system warn ings – refer to the Remote Fault Board tab in the Operation and Maintenance Manual.

Steam – this normally open (NO) relay closes when the unit is producing steam.

Unit on – this normally open (NO) relay closes when the humidifier has power, and the On/Off switch is in the On position.

F1

100mA

Error Service Steam Unit ON

1 2 3 4 5 6 7 8 9 10

INTERNAL

EXTERNAL

Figure 30: Remote Fault PCB Connections

The remote relay PCB connects to the connector J2 on the Nortec GS control board.

5.11.3.6

Single-Phase Power Supply Connection

Connect the single-phase power supply to the Nortec GS humidifier as shown in

Figure 31

. Refer to the

specification label (

"Model Specifications" on page 12

) for power requirement and sizing of fused disconnect switch (slow acting).

IMPORTANT!

Make sure that the main power cable is proper grounded through the ground lug inside the control cabinet.

All wiring must be in accordance with national and local electrical codes.

1

L N

EXTERNAL

INTERNAL

2

Figure 31: Single-Phase Power Supply Connections

1 Switch, disconnect, external fused

2 Terminal block, power supply

54

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.11.3.7

Modbus Connection

The Nortec GS humidifier comes standard with a Modbus communications interface, which can be used to remotely control its output or monitor its operation.

Refer to

Figure 32

and connect the Modbus communication cable to the Nortec GS humidifier as follows:

1. Connect a Modbus cable to the connector J6 on the Nortec GS control board. Refer to

Table 18

for

Modbus cable requirements, and

Table 19

for communication parameters. Contact your Condair rep resentative if assistance is needed to change the default communication parameters.

Note:

The jumper JP7 on the control board must be installed to activate Modbus or BACnet MSTP communication via RS485 interface (J6). If the jumper is not installed, no communication will take place through J6.

2. Install the jumper JP4 on the control board if the humidifier is the first or last unit in the network.

JP7

JP4

JP8

Modbus

J6

J1

ACC

J3

SIM card battery

JP7

JP4

Modbus

J6

JP8

Linkup

J10

RFB

J2

JP11

J12

CONTROL

BOARD

J14

J16 J15

display

J17

display

J18

comm port

J19

LED

J22

USB

J23

U U ethernet

J21

U

U

Figure 32: Modbus Connection on Nortec GS Humidifier

JP4 Jumper – for activating the termination resistor for Modbus or BACnet MSTP network

J6 Connector, Modbus (RS485 interface)

JP7 Jumper – for activating Modbus or BACnet MSTP communication via RS485 interface (J6)

Table 18: ModBus Cable Requirements

BMS Protocol Signal Type Recommended Cable

Maximum Distance from humidifier to BMS ft ( m )

Modbus EIA-485, 2-wire 18-24 AWG shielded, twisted pair, 120Ω *

2200 (670)

* Connect humidifiers in a daisy chain to the Modbus RTU. Ground shield at on end only – either at the BMS or the humidifier.

Table 19: Modbus Communication Parameters

Parameter

Signal type

Transmission mode

Baud rate

Data bits

Stop bits

Parity

Address

Time out

Default

EIA-485

RTU

9600

8

1

Even

10

300 s

Adjustable Range

110, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 76800 or 115200

Odd, Even, None

1-247

1-300 s

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Installation

55

5.11.4

Connecting Multiple Units Using Linkup

The integrated control board in the humidifier allows up to four integrated controllers to connect in a

"main-extension" configuration using Condair's Linkup system. All the humidifiers within this setup must share the same environment, and be controlled by one set of control signals connected to the main unit.

Refer to

Figure 33

and connect multiple unit using Linkup as follows:

1. Connect all control signals for the entire Linkup configuration to the low voltage terminal strip in the main unit.

2. Install a jumper wire between the pins "1" and "2" in the low voltage terminal strip on all extension units.

3. Connect a multi-strand twisted pair shielded cable (18-24 AWG, 120 Ω) between the J10 connec tors on the control board of each humidifier in the Linkup system.

Note:

Maximum recommended distance between units is 100 ft (30 m).

IMPORTANT!

Do not reverse polarity.

4. Install the termination jumper JP8 in the control board of the last extension unit in the Linkup system.

5. Finally, refer to the Operation and Maintenance Manual to set up the multi-unit configuration in the control software.

1

2

3

J6 J10

Linkup

JP8

Internal

External

1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9

4

All Inputs

Figure 33: Multi-Unit Linkup Connections

1 Main unit (all control signals to unit)

2 Extension unit #1 (no control signals to unit)

3 Extension unit #X (no control signals to unit)

4 Jumper (on all extension units)

4

1 2 3 4 5 6 7 8 9

56

Installation 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

5.11.5

Electrical Connections Checklist

…

…

…

…

…

…

…

…

…

Check the following to ensure that the electrical connections for the humidifier have been installed correctly:

Power supply meet the rated current draw limits shown on the specification label (

"Model Specifications" on page 12

)?

Power supply have an external dedicated fused disconnect switch?

All wiring done according to the wiring diagram and instructions in this manual?

Main power cable proper grounding through the ground lug inside the electric cabinet?

All cables fastened securely?

All cables free of tension and pass through cable glands or grommets?

Electrical installation meet the applicable national and local codes?

All access panels closed and fastened securely?

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Installation

57

6

Commissioning

6.1

Commissioning Checklist

The humidifier must always be commissioned for the first time by a service technician from your local Condair representative, by a Condair employee, or by personnel who are well trained and authorized by the customer. It is the customer's responsibility to verify the qualifications of personnel.

The intent of the commissioning checklist is to verify that the humidification system has been installed according to the installation manual.

Commissioning of the humidifier consists of two steps – an inspection of the site services and the installation prior to start-up, and performance tests of the unit. Complete the

"Pre-Start-Up Checklist"

below and

"Performance

Checklist" on page 64

. Enter all notes and exceptions in the space provided

on page 65

. Retain this copy in the installation manual, and submit a copy of the completed forms to your local Condair representative.

6.1.1

Pre-Start-Up Checklist

Inspect the site services and the installation, and fill out the form below.

Note:

When filling out the form leave the checkbox un-checked if the item does not apply, or if the requirement is not satisfied.

Tag: Serial Number:

Model:

Customer/Job:

Customer

Address:

Capacity:

Representative:

Voltage and Phase:

Site Ambient Conditions

Ambient temperature:

(Permissible range – 41-104 °F (5-40 °C))

Ambient humidity level:

(Permissible range – 5-95% RH, non-condensing)

Site Water Supply

Well water

City water

Softened water

Reverse osmosis (RO)

De-ionized water (DI)

Refer to

Table 7 on page 18

for water quality requirements.

Note:

Run the water for approximately five minutes before performing the tests:

Site Water Quality

Conductivity (μS/cm):

Hardness gpg (ppm):

Silica (ppm):

Chlorides (ppm): pH level:

Acceptable Range

0-1500

0-15 (256)

0-14

0-40 pH 6.5 - 7.5

Measurement*

* Test sample must be collected as close as possible to the fill valve in the humidifier, so that the sample reflects the characteristics of the supply water entering the unit.

58

Commissioning 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Site Water Supply, continued...

Water supply pressure meets require ment:

(Permissible range – 30-80 psig (207-550 kPa)

Select checkbox, or enter measurement, as appropri ate).

Water supply pipe sized correctly:

(Minimum 1/2 in (13 mm) diameter required).

Water supply temperature meets require ment:

(Optimal range – 34-59 °F (1-15 °C); maximum 77 °F

(25 °C))

Select checkbox, or enter measurement, as appropri ate).

Water supply piping material:

(Materials certified for drinking water systems permit ted; plastic or stainless steel only for DI water).

Filter installed close to humidifier:

(5 μm – optional, but recommended)

Shutoff valve and union fitting installed:

No pressure surges:

(Surge protection device must be installed, if neces sary).

All debris flushed from supply line:

No leakages in supply line:

Note:

For the Nortec GS 450/600 units, check water supply to each dual fill valve.

Drainage

Drain pipe (funnel to building drain) diam eter meets requirement:

(Minimum 1-1/2 in (38 mm) diameter required).

Humidifier drain piping material meets requirement:

(Must handle temperatures to 212 °F (100 °C)).

Drain pipe sloped adequately:

(Minimum downslope of 1 in/48 in (1.2°) to air gap funnel).

Air gap funnel size meets requirement:

(Minimum 2-1/2 in (64 mm) diameter required).

Drain pipe does not touch sides or bot tom of air gap funnel:

Air gap funnel location does not permit any rising steam to enter control cabinet:

Air gap funnel located within 3 ft (1 m) from the unit (or according to code):

Drainage rate of building drain meets requirement:

(Minimum 2.64 gal/min (10 L/min) for GS 50-300 unit,

5.28 gal/min (20 L/min) for GS 450/600).

Building drain piping material meets requirement:

(Only copper or stainless steel permitted; stainless steel only for DI water).

Nortec GS

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Commissioning

59

Site Gas Connection

Gas type:

(Natural gas or propane)

Gas supply pressure:

(Natural gas permissible range – 5-10 in H20 (1.25-

2.49 kPa)

Propane permissible range – 9-14 in H20 (2.24-

23.49 kPa))

Manual gas shutoff valve installed:

Distance from humidifier:

(Manual shutoff valve must be installed per local code).

Union fitting installed in gas line:

Gas supply pipe diameter and connection meet requirements:

(Refer to

on page 20

for details).

Gas supply piping material:

(Stainless steel or black pipe permitted)

Sediment trap installed:

(Sediment trap required if black pipe is used for gas line).

Performed leakage test on gas line (up to unit):

Humidifier Mounting

Refer to

Table 9 on page 21

and

Table 10 on page 21

for required and suggested clearances respectively.

Non-combustible mounting surface?

(Withstand temperatures 140-158 °F (60-70 °C))

Unit level?

Front clearance:

Left side clearance:

Right side clearance:

Ground clearance:

Overhead clearance:

Steam Line(s)

Steam line diameter and equivalent length meet requirements:

(Refer to

Table 12 on page 27

for details).

Steam line piping material meets require ment:

(Copper (MED Type-L) or stainless steel (minimum DIN

1.4301) required).

Type of insulation:

Slope of steam line meets requirement:

(Minimum constant upslope of 2 in/12 in (10°), or mini mum constant downslope of 1/2 in/12 in (2°) required).

Steam line rises straight up minimum

12 in (300 mm) before first bend:

Steam line does not reduce in diameter or merge, except at steam distributor:

No restrictions/kinks in steam line:

Steam line fully supported, with no sags:

All debris flushed from steam line:

Backpressure meets requirement:

(Maximum permissible static pressure and backpres sure in steam line – 6 in H2O (1.49 kPa) for compact units; or 10 in H2O (2.49 kPa) for full-size units)

Duct static pressure:

(Enter static pressure (if available), and if positive or negative pressure).

60

Commissioning 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Steam Line Condensate Drains

Note:

Make sure all condensate drains meet these requirements.

Slope of all condensate lines meets requirement:

(Minimum constant downslope of 1 in/48 in (1.2°) required).

Condensate lines connect to full-size Tee connectors:

Diameter of condensate traps meets requirement:

(Minimum 12 in (300 mm) required).

Condensate trap drop meets require ment:

(Minimum 12 in (300 mm) below condensate Tee and steam distributor required).

Condensate traps installed at all low points, and horizontal-to-vertical transi tions in steam line:

Condensate traps installed at regular intervals on long runs exceeding 15 ft

(4.5 m):

Condensate lines have individual traps before emptying into a common drain:

No restrictions/kinks in condensate lines:

All debris flushed from condensate lines:

Condensate cooling installed, (if required by local code):

All condensate traps primed:

Electrical Power Connections

Power supply meets voltage and current requirements shown on specification label:

Dedicated external fused disconnect switch installed to local code:

(The maximum current to the unit must not exceed

15 A).

Phase-to-phase voltage measurements:

All contactor screws torqued properly:

(Refer to label on contactor for correct torque value).

Proper grounding:

(Green wire must be connected to GND in the supply)

All wiring and connectors fastened securely:

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Commissioning

61

Combustion Air

Space Air Installation

Combustion air requirements satisfied:

(Meet all applicable local and national codes).

Combustion air free of contaminants:

Fresh air intake requirements satisfied:

(Refer to

Table 14 on page 36

for minimum fresh air

cross-sectional area requirements. Refer to local codes).

Elbow installed at intake air inlet:

(Required for Nortec GS full size units).

Sealed Combustion Installation

Combustion air requirements satisfied:

(Meet all applicable local and national codes).

Intake vent type meets requirement:

(ABS, PVC, CPCV or polypropylene vents permitted).

Intake vent length:

(Permissible maximum equivalent length – 100 ft

(30 m); maximum 50 ft (15 m) for GS 50 using propane).

Intake vent diameter meets requirement:

(Refer to

Table 15 on page 37

for vent size).

Intake vent diameter uniform over entire length:

Spacing between air intake and exhaust terminals meets requirement:

(Minimum 3 ft (1 m) required. Refer to local codes).

Intake vent joints and seams sealed:

Intake vent supported with hangers or pipe straps:

Intake vent insulated (in cold climates):

Exhaust Venting

Exhaust venting requirements satisfied:

(Meet all applicable local and national codes).

Exhaust vent type:

(Refer to

Table 16 on page 40

for vent types).

Exhaust vent length:

(Permissible maximum equivalent length – 100 ft

(30 m). Maximum 50 ft (15 m) for GS 50 using propane).

Exhaust vent diameter meets require ment:

(Refer to

Table 16 on page 40

for exhaust vent size).

Exhaust vent diameter uniform over entire length:

Slope of exhaust vent meets require ment:

(Minimum constant upslope of 1/2 in/12 in (2°) required).

Exhaust vent insulated on runs over 20 ft

(6.1 m):

Exhaust vent joints and seams sealed:

Exhaust vent supported with hangers or pipe straps:

Condensate traps in the exhaust vent (if installed) primed with water:

62

Commissioning 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Controls

Note:

If Condair control devices are installed, enter their locations below; otherwise leave fields empty.

Condair humidity controls location:

Condair high limit switch location:

(Minimum 3× absorption distance from the distributor required).

Condair air proving switch location:

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Commissioning

63

6.1.2

Performance Checklist

Complete the performance tests after inspecting the site services and the installation, then fill out the form below.

Note:

When filling out the form leave the checkbox un-checked if the item does not apply, or if the requirement is not satisfied. Enter all notes and exceptions in the space provided

on page 65

.

Preliminary

Pre-start-up checklist completed:

Gas leakage test inside unit completed:

Check for water leaks inside unit com pleted:

Condensate trap inside the unit primed:

( Nortec GS CS/NX models only).

All access panels installed and fastened securely:

Start-Up

Shutoff valve in water supply line open:

Fill tests completed successfully:

Ignition safety shutoff test completed successfully:

Manual gas shutoff valve open:

On/Off switch set to the On position:

Software version:

Distribution System

Note:

For commissioning the distribution system itself, refer to the individual commissioning checklist for the distribution system.

SAM-e

Mini-SAM-e

Blower Pack

ASD/BSD/CSD

Model:

Number of XSD units:

Distance to obstruction:

(Minimum 1× absorption distance required from the distributor to first obstruction (coil/bend ) downstream).

Distance to filter:

(Minimum distance between the distributor and filter downstream – 1.5-2× absorption distance for class C filter, and 2.5-3× absorption distance for sub-micron particle filter).

Controls

Select the type of signal input connected to the channels of the low voltage termi nal strip #1:

(Enter setpoint value (if applicable) in the field below the checkbox).

Demand Humidistat

(modulating)

CH 1:

On/Off Humidistat

CH 2:

On/Off:

If a second set of inputs is connected to the channels of the low voltage terminal strip #2 (on dual cylinder units running in independent mode only), select the type of signal input connected to the terminal strip #2:

(Enter setpoint value (if applicable) in the field below the checkbox).

Demand Humidistat

(modulating)

On/Off Humidistat

CH 1:

CH 2:

On/Off:

Control signal configuration in the soft ware matches inputs connected to unit:

Transducer

(modulating)

Transducer

(modulating)

Digital Controls

Digital Controls

64

Commissioning 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Controls, continued...

Sensed humidity less than setpoint value

(if transducer is used):

Security loop closed:

(On a dual cylinder unit running in series or parallel mode, a jumper must be installed between the pins '2" in the two low voltage terminal strips).

Blower pack loop closed:

Humidifier responds to control signal interruption:

Notes

Enter notes and exceptions in the space below.

Notes:

Commissioned by:

Company:

Commissioning Date:

To print the completed forms (if using an electronic version of the manual), select the

Print Form

button above. In the Print dialog box that appears, select the page numbers under

Pages to Print

, and the

Fit

option under

Page Sizing & Handling

. Click

Print

.

To save the completed electronic forms, first select the

Save Form

button above, and select "Adobe PDF" from the

Printer

drop-down list in the dialog box. Then select the page numbers, and click

Print

. Finally, enter a file name in the dialog box, and click

Save

.

Nortec GS

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Commissioning

65

7

Installation Checklist

The following is a consolidated installation checklist that can be used in the commissioning of the unit:

Mounting

…

…

…

…

…

Unit installed in the correct location (according to

"Clearances" on page 20

)?

Adequate clearance for servicing unit?

Mounting surface stable, and capable of supporting the full operating weight of the humidifier?

Unit level?

Unit secured properly?

Steam Line

…

…

…

…

…

…

…

…

…

…

…

…

…

Observed all best practices?

Steam pipe sized correctly?

The steam line does not exceed maximum equivalent length listed in

Table 12 on page 27

?

Long radius elbows (for rigid pipes) used?

Backpressure in the line combined with duct static pressure does not exceed 6 in H2O (1.49 kPa ) for compact units, or 10 in H2O (2.49 kPa) for full-size units?

Steam line runs straight up from the humidifier steam outlet for at least 12 in (300 mm) before bend?

Steam line has minimum upslope of 10°, or minimum downslope of 2 °?

Steam line does not reduce in diameter except at the steam distributor; and condensate line installed just before the restriction?

Steam lines do not merge except at the steam distributor through a Condair adaptor?

Steam line does not sag?

Steam connections secured with clamps? Clamps torqued adequately?

Allowances made for thermal expansion of rigid pipes, and shrinkages of steam hose?

Steam line insulated over its entire length?

Condensate Line

…

…

…

…

…

…

…

…

Local regulations on drain water temperature requirements have been satisfied?

Condensate traps installed at all low points, and at horizontal-to-vertical transitions in the steam line?

Condensate lines in the steam line always connect to full-size "Tee" connectors?

Condensate traps have a minimum loop diameter of 12 in (300 mm) and installed at least 12 in

(300 mm) below the condensate "Tee" and the steam distributor?

All condensate lines have a minimum downslope of 1.2°?

Condensate traps installed at regular intervals on long runs exceeding 15 ft (4.5 m)?

Condensate lines have individual traps before emptying to a common condensate drain? Condensate drain sized appropriately to handle all the condensate?

Condensate traps primed with water?

Water Connections

…

…

…

…

…

Water quality meet the requirements listed in

Table 7 on page 18

?

Shutoff valve and union fitting installed in supply line?

Water supply piping to humidifier minimum 1/2 in ( 13 mm ) diameter? Plastic pipe (pressure-proof and certified for use with drinking water systems), copper or stainless steel if using potable drinking water or RO water? Plastic or stainless steel pipe if using DI water?

5 μm water filter (optional, but recommended) installed in the supply line close to the humidifier?

Water supply temperature 34-60 °F (1-15 °C)? Do not exceed 77

˚

F ( 25

˚

C).

66

Installation Checklist 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

…

…

…

…

…

…

…

…

…

…

Double check valve backflow preventer is installed along the water supply line to the unit? Is the double check valve backflow preventer installed, adhering to all applicable local and national instal lation regulations?

Water supply surge-protected and pressure regulated to 30-80 psig (207-550 kPa)?

Check for leaks in the water supply line?

Air gap funnel in the floor located away (max 3 ft ( 1 m ) from the unit) from the control cabinet in the humidifier?

Air gap funnel minimum 2-1/2 in ( 64 mm ) in diameter?

Drain pipe between air gap funnel and building drain have a minimum internal diameter of 1-1/2 in

(38 mm)? Copper or stainless steel pipe if using potable drinking water or RO water? Stainless steel pipe if using DI water?

Drain hose from humidifier empty into the air gap funnel without touching its sides or bottom? Drain hose have a minimum constant downslope of 1.2° and secured with hose clamp? Drain hose rated for 212 °F (100 °C)?

Water supply line and drain lines flushed? Strainer in the fill valve free of debris?

Condensate hose installed (CS/NX models only)? Hose rated for 212 °F (100 °C)?

Condensate trap inside unit primed with water?

Combustion Air Connection – Space In Room Air Installation

…

…

Fresh combustion air requirements for the room/space (

Table 14 on page 36

and all national and local

regulations) satisfied?

Elbow installed at the intake air inlet (on Nortec GS full size units)?

Combustion Air Connection – Sealed Combustion Installation

…

…

…

…

…

…

…

All relevant national and local regulations for sealed combustion installation satisfied?

Intake vent length does not exceed an equivalent length of 100 ft (30 m)? If unit is a Nortec GS 50 using propane gas, is it limited to 50 ft (15 m)? Maximum six bends?

Vent diameter as listed in

Table 15 on page 37

, and uniform over the entire run?

All joints and seams sealed with appropriate sealant?

Intake vent supported?

Spacing between air intake terminal and exhaust vent terminal minimum 3 ft ( 1 m )?

Intake vent heated and insulated in cold climates?

…

…

…

Exhaust Vent Connection

…

…

…

Exhaust vent installed to meet all national and local codes, vent manufacturer and Condair require ments?

Proper clearances maintained between exhaust vent and combustible materials?

Exhaust vent diameter as listed in

Table 16 on page 40

, and uniform over the entire run?

-

Exhaust vent length does not exceed an equivalent length of 100 ft (30 m)? If unit is a Condair GS

50 using propane gas, is it limited to 50 ft ( 15 m )? Maximum six elbows in the exhaust vent?

Exhaust vent diameter uniform over the entire run?

E xhaust vent secured properly with hangers or pipe straps?

Gas Connection

…

…

…

…

Certified manual gas shutoff valve installed immediately upstream from the humidifier?

Thermally actuated gas shut-off device installed upstream from the humidifier? Installed the device following all local codes and regulations?

Sediment trap installed (if using black pipe)?

Gas pipe routing allow clear access to other service connections at humidifier?

Nortec GS

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Installation Checklist

67

…

…

…

Gas piping adequately supported?

Gas leakage test completed, and all leaks fixed?

De-pressurize gas supply line after leak test?

Electrical Connections

…

…

…

…

…

…

…

…

Power supply meet the rated current draw limits shown on the specification label (

Figure 3 on page 11

)?

Power supply have an external dedicated fused disconnect switch?

All wiring done according to the wiring diagram and instructions in this manual?

M ain power cable proper grounding through the ground lug inside the electric cabinet?

All cables fastened securely?

All cables free of tension and pass through cable glands or grommets?

Electrical installation meet the applicable national and local codes?

All access panels closed and fastened securely?

68

Installation Checklist 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

8

Product Specifications

8.1

8.2

Weights

For the weights of the Nortec

GS humidifier models refer to

"Overall Dimensions and Weight" on page 21

.

Dimensions

3.9in 100m

9.3in

236mm

14.1in

359mm

Steam Outlet

Ø 1.75 in (45 mm)

Exhaust Outlet *

Ø 2.4 in (60 mm)

Ø 3.1 in (80 mm)**

Controls In

Ø 7/8 in (22 mm)

2.5in

63mm

O

7/8in

22mm

25.2in

640mm

21.4in

542mm

43.3in

1101mm

2.7in

69mm

Gas Inlet

1/2 in NPT

Power In

Ø 7/8 in (22 mm)

Air Inlet

Ø 2 in (50 mm)

Ø 3 in (80 mm)**

8.8in 224m

19.8in 503m

Drain Outlet

Ø 7/8 in (22 mm)

4.0in

101mm

2.2in

56mm

Condensate Drain

Ø 3/8 in (9.5 mm)

Figure 34: Nortec GS 50/100

Wall mount is default. Floor stands come with the compact unit.

* Metric to imperial size adaptor supplied with unit

** Adaptor, 3 in (80 mm), for

Nortec GS 100

Note

: Water inlet BSPP to NPT adaptor supplied with unit

Water Inlet

3/4 in BSPP

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2596645_A_EN_1912_Nortec-GS_IM

Product Specifications

69

25.0 in (635 mm)

19.6 in (497 mm)

8.3 in (212 mm)

Air Inlet

Ø 3 in (80 mm)

2.3 in (59 mm)

28.2 in (717 mm) 29.0 in (738 mm)

Steam Outlet

Ø 3 in (75 mm)

Exhaust Outlet *

Ø 3 in (80 mm)

Controls In

Ø 7/8 in (22 mm)

Gas Inlet

1/2 in NPT

Water Inlet

3/4 in BSPP

Drain Outlet

Ø 7/8 in (22 mm)

Condensate Drain

Ø 0.5 in (13 mm)

30.9 in (786 mm) 30.8 in (783 mm)

Figure 35: Nortec GS 150

Mounting stand supplied. The humidifier may also be installed directly onto the floor. Follow local guidelines.

* Metric to imperial size adaptor supplied with unit

Note

: Water inlet BSPP to NPT adaptor supplied with unit

70

Product Specifications 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

33.1 in (841 mm)

24.0 in (610 mm)

8.1 in (207 mm)

Steam Outlet

Ø 3 in (75 mm)

Exhaust Outlet *

Ø 4 in (100 mm)

2.4 in (61 mm)

38.1 in (968 mm)

Air Inlet

Ø 4 in (100 mm)

29.0 in (738 mm)

Controls In

Ø 7/8 in (22 mm)

Gas Inlet

3/4 in NPT

Water Inlet

3/4 in BSPP

Drain Outlet

Ø 7/8 in (22 mm)

Condensate Drain

Ø 0.5 in (13 mm)

40.4 in (1026 mm)

30.8 in (783 mm)

Figure 36: Nortec GS 200/300

Mounting stand supplied

* Metric to imperial size adapter supplied with unit

Note

: Water inlet BSPP to NPT adaptor supplied with unit

Nortec GS

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Product Specifications

71

Air Inlet

Ø 6 in (150 mm)

Steam Outlet

Ø 4 in (100 mm)

49.4 in (1254 mm)

31.9 in (811 mm)

8.0 in (204 mm)

Controls In

Ø 7/8 in (22 mm)

Exhaust Outlet *

Ø 6 in (150 mm)

Gas Inlet

1 in NPT

Water Inlet

3/4 in BSPP

54.4 in (1382 mm)

2.4 in (61 mm)

29.0 in (738 mm)

57.0 in (1448 mm)

30.8 in (783 mm)

Figure 37: Nortec GS 450

Mounting stand supplied

* Metric to imperial size adaptor supplied with unit

Note

: Water inlet BSPP to NPT adaptor supplied with unit

Note

: Gas inlet 1-1/4 in to 1 in BSP adaptor (required) NOT supplied with unit.

Condensate Drain

Ø 0.5 in (13 mm)

Drain Outlet

Ø 7/8 in (22 mm)

72

Product Specifications 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Steam Outlet

Ø 4 in (100 mm)

Exhaust Outlet *

Ø 6 in (150 mm)

Air Inlet

Ø 6 in (150 mm)

64.3 in (1632 mm)

59.2 in (1504 mm)

33.9 in (861 mm)

8.0 in (204 mm)

Controls In

Ø 7/8 in (22 mm)

2.4 in (61 mm)

29.0 in (738 mm)

Gas Inlet

1 in NPT

Water Inlet

3/4 in BSPP

66.9 in (1700 mm) 30.8 in (783 mm)

Figure 38: Nortec GS 600

Mounting stand supplied.

* Metric to imperial size adaptor supplied with unit

Note

: Water inlet BSPP to NPT adaptor supplied with unit

Note

: Gas inlet 1-1/4 in to 1 in BSP adaptor (required) NOT supplied with unit.

Condensate Drain

Ø 0.5 in (13 mm)

Drain Outlet

Ø 7/8 in (22 mm)

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Product Specifications

73

9 Performance and Operating Data

9.1

9.2

GS 200-CS

GS 200-NX

GS 200-MT

GS 300-CS

GS 300-NX

GS 300-MT

GS 450-CS

GS 450-NX

GS 450-MT

GS 600-CS

GS 600-NX

GS 600-MT

Nortec

Model

GS 50-CS

GS 50-NX

GS 50-MT

GS 100-CS

GS 100-NX

GS 100-MT

GS 150-CS

GS 150-NX

GS 150-MT

Performance Data

24,800 (7.3)

26,000 (7.6)

28 000 (8.2)

37,200 (10.9)

39,000 (11.4)

42 000 (12.3)

37,200 (10.9)

39,000 (11.4)

42 000 (12.3)

37,200 (10.9)

39,000 (11.4)

42 000 (12.3)

Minimum Input

(gross)

BTUh (kW)

Natural Gas Propane

12,400 (3.6)

13,000 (3.8)

14 000 (4.1)

13,000 (3.8)

24,800 (7.3)

26,000 (7.6)

28 000 (8.2)

37,200 (10.9)

39,000 (11.4)

42 000 (12.3)

24,800 (7.3)

37,200 (10.9)

24,800 (7.3)

37,200 (10.9)

37,200 (10.9)

37,200 (10.9)

Maximum Input

(gross)

BTUh (kW)

Natural Gas Propane

62,000 (18.2)

65,000 (19.0)

70 000 (20.5)

62,000 (18.2)

124,000 (36.3)

120,000 (35.2)

140 000 (41.0)

186,000 (54.5)

187,500 (55.0)

210 000 (61.5)

124,000 (36.3)

186,000 (54.5)

248,000 (72.7)

248,000 (72.7)

240,000 (70.3)

280 000 (82.1)

372,000 (109.0)

375,000 (109.9)

420 000 (123.1)

558,000 (163.5)

562,500 (164.9)

630 000 (184.6)

744,000 (218.0)

750,000 (219.8)

840 000 (246.2)

372,000 (109.0)

558,000 (163.5)

744,000 (218.0)

Min./Max. Steam

Capacity lb/h (kg/h)

10-50 (4.5-23)

10-50 (4.6-23)

10-50 (4.6-23)

20-100 (9-45)

20-100 (9-45)

20-100 (9-45)

30-150 (13.6-68)

30-150 (13.6-68)

30-150 (13.6-68)

20-200 (9-91)

20-200 (9-91)

20-200 (9-91)

30-300 (13.6-136)

30-300 (13.6-136)

30-300 (13.6-136)

30-450 (13.6-204)

30-450 (13.6-204)

30-450 (13.6-204)

30-600 (13.6-272)

30-600 (13.6-272)

30-600 (13.6-272)

Operating Data

Control Signal Input Type:

Active 0-5 VDC, 1-5 VDC, 0-10 VDC, 2-10 VDC, 0-20 VDC, 0-16 VDC, 3.2-16 VDC, 0-20 mADC, 4-20 mADC

Passive

On/Off control

Digital (via Modbus,

BACnet IP/MSTP

135-10 kΩ ohmic humidity sensor

<2.5 VDC Off, 2.5-20 VDC On

BACnet IP, BACnet MSTP, Modbus, LonWorks (Option), BACnet MSTP BTL-Certified (Option), BAC net IP BTL-Certified (Option)

-

Ambient Conditions:

Ambient temperature

Relative humidity

41-104 °F (5-40 °C)

5-80% (non-condensing)

Combustion Air:

Combustion air maximum temperature 86 °F (30 °C)

Backpressure:

Maximum permissible backpressure (duct static pressure and line backpressure) 6 in H2O (1.49 kPa) compact unit

10 in H2O (2.49 kPa) full-size unit

74

Performance and Operating Data 2596645_A_EN_1912_Nortec-GS_IM Nortec GS

Gas Operating Pressure:

Natural gas

Propane

Water Supply:

Water pressure (regulated)

Flow rate

Water temperature

Water quality

Drain Water:

Drain water temperature

Drainage capacity

Power:

Maximum current draw

IP Rating:

IP20 for all units

4.5-10.0 in H2O (1.1-2.4 kPa)

9.0-13.0 in H2O (2.2-3.2 kPa)

30-80 psig (3.0-8.0 bar, 207-550 kPa)

2.6 gpm (10 L/min) for Nortec GS 50-300 , 5.3 gpm (20 L/min) for Nortec GS 450-

600

34-59 °F (1-15 °C) recommended; maximum 77 °F (25 °C)

Cold potable water filtered to 5 μm, hardness of 0-14.94 gpg (0-205 ppm), pH level between 5-8 and chloride 0-40 ppm.

140 °F (60 °C) maximum (with drain water cooling), 212 °F (100 °C) (without drain water cooling)

5.3 gpm (20 L/min)

15 A (slow acting fuse)

Nortec GS

2596645_A_EN_1912_Nortec-GS_IM

Performance and Operating Data

75

Warranty

Condair Inc. and/or Condair Ltd. (hereinafter collectively referred to as THE COMPANY), warrant for a period of two years after installation or 30 months from manufacturer’s ship date, whichever date is earlier, that

THE COMPANY’s manufactured and assembled products, not otherwise expressly warranted, are free from defects in material and workmanship. No warranty is made against corrosion, deterioration, or suitability of substituted materials used as a result of compliance with government regulations.

THE COMPANY’s obligations and liabilities under this warranty are limited to furnishing replacement parts to the customer, F.O.B. THE COMPANY’s factory, providing the defective part(s) is returned freight prepaid by the customer. Parts used for repairs are warranted for the balance of the term of the warranty on the original humidifier or 90 days, whichever is longer.

The warranties set forth herein are in lieu of all other warranties expressed or implied by law. No liability whatsoever shall be attached to THE COMPANY until said products have been paid for in full and then said liability shall be limited to the original purchase price for the product. Any further warranty must be in writing, signed by an officer of THE COMPANY.

THE COMPANY’s parts or materials that are considered consumables, including but not limited to: cylinders, filters, nozzles, membranes, media, gaskets, O-rings, etc. are NOT covered by the warranty.

THE COMPANY makes no warranty and assumes no liability unless the equipment is installed in strict accordance with a copy of the catalog and installation manual in effect at the date of purchase and by a contractor approved by THE COMPANY to install such equipment.

THE COMPANY makes no warranty and assumes no liability whatsoever for consequential damage or dam age resulting directly from misapplication, incorrect sizing or lack of proper maintenance of the equipment.

THE COMPANY makes no warranty and assumes no liability whatsoever for damage resulting from freezing of the humidifier, supply lines, drain lines, or quality of the water used.

THE COMPANY retains the right to change the design, specification and performance criteria of its products without notice or obligation.

THE COMPANY’s limited warranty on accessories, not of the companies manufacture, such as controls, humidistats, pumps, etc. is limited to the warranty of the original equipment manufacturer from date of original shipment of humidifier.

Extended Warranty

Extended warranties are available to purchase under the conditions listed above.

CONSULTING, SALES AND SERVICE:

Condair Ltd.

U.S.A.

835 Commerce Park Ave

Ogdensburg, NY 1366-2209

CANADA

2740 Fenton Road

Ottawa, ON, K1T 3T7

Tel: 1.866.667.8321

Fax: 613.822.7964

Email: [email protected]

Website: www.condair.com

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