HUM_installation manual.pdf

INSTALLATION MANUAL

Gas-fired Steam Humidifier Nortec GS Series II

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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.

4 Contents Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

Contents

1 Introduction 6

1.1 Notes on this manual 6

2 For Your Safety 7

3 Receiving and Storage 10

3.1 Inspection 10

3.2 Storage and Transportation 10

4 Product Overview 11

4.1 General Description 11

4.2 Model Designation 11

4.3 Model Specifications 12

4.4 Options 14

4.5 Accessories 14

5 Mounting and Installation Work 15

5.1 General 15

5.2 Installation Overview 16

5.2.1 Typical Installation – Compact Units 16

5.2.2 Typical Installation – Full-Size Units 17

5.3 Site Requirements 18

5.4 Mounting the Humidifier 20

5.4.1 Clearances 20

5.4.1.1 Overall Dimensions and Weight 21

5.4.2 Removing the Shipping Pallet 22

5.4.3 Wall Mounting – Compact Unit Only 23

5.4.4 Floor Stand Mounting - Compact Unit 24

5.4.5 Floor Stand Mounting - Full Size unit 24

5.4.6 Mounting Checklist 25

5.5 Steam Connection 25

5.5.1 Installing the Main Steam Pipe 26

5.5.2 Best Practices for Installing Steam and Condensate Lines 27

5.5.2.1 Common Steam and Condensate Line Installation Mistakes 30

5.5.3 Steam Connection Checklist 31

5.6 Water Installation 32

5.6.1 Water Connections 32

5.6.2 Installing Exhaust Condensate Drain Line (CS/NX Model Only) 33

5.6.3 Water Connections 34

5.6.4 Water Connections Checklist 36

5.7 Combustion Air Connection 37

5.7.1 Space Air Installation 37

5.7.2 Sealed Combustion Installation 37

5.7.3 Combustion Air Checklist 39

5.8 Exhaust Vent Installation 39

5.8.1 General Requirements 39

5.8.2 Exhaust Vent Installation for CS/NX Model 44

5.8.2.1 Installation as a Category III Appliance 44

5ContentsNortec GS 2596645_B_EN_2010_Nortec-GS_IM

5.8.2.2 Installation as a Category IV Appliance 44

5.8.2.3 Installation Requirements for Category III/IV Appliances. 44

5.8.3 Exhaust Vent Checklist 45

5.9 Gas Connection 46

5.9.1 Gas Connection, Compact and Full-Size Unit 46

5.9.2 Gas Leakage Test 47

5.9.3 Gas Connection Checklist 47

5.10 Humidity Control Systems 48

5.10.1 Control Device Locations 48

5.10.2 Permissible Control Signal Inputs 48

5.11 Electrical Connections 49

5.11.1 General 49

5.11.2 Wiring Diagrams 50

5.11.2.1 Nortec GS - All Units 50

5.11.2.2 Nortec GS - 450/600 51

5.11.3 External Connections 52

5.11.3.1 External Security Loop 52

5.11.3.2 Modulating Demand or Humidity/Limiter Signal 52

5.11.3.3 On/Off Humidistat Signal 54

5.11.3.4 Full Tank Blowdown Signal Connection 54

5.11.3.5 Remote Fault PCB Connections 54

5.11.3.6 Single-Phase Power Supply Connection 55

5.11.3.7 Modbus Connection 56

5.11.4 Connecting Multiple Units Using Linkup 57

5.11.5 Electrical Connections Checklist 58

6 Commissioning 59

6.1 Commissioning Checklist 59

6.1.1 Pre-Start-Up Checklist 59

6.1.2 Performance Checklist 65

7 Installation Checklist 67

8 Product Specifications 70

8.1 Weights 70

8.2 Dimensions 70

9 Performance and Operating Data 75

9.1 Performance Data 75

9.2 Operating Data 75

6 Introduction Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

1 Introduction

Thank you for purchasing the Nortec GS steam humidifier.

The Nortec GS steam 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 a safe, proper, and economical operation of the Nortec GS steam 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, combustion air, flue gases, water, steam and electrical installations.

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

1.1 Notes on this manual

Limitation

The subject of this manual is the Nortec GS steam humidifier in its different versions. The various options and accessories may only be described in-so-far as is necessary for proper installation and operation of the equipment. Additional information 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 steam humidifier, and is intended for well trained personnel who are suitably qualified for their respective tasks.

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.

7For Your SafetyNortec GS 2596645_B_EN_2010_Nortec-GS_IM

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 qualified, 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 appropriate 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).

8 For Your Safety Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

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.

9For Your SafetyNortec GS 2596645_B_EN_2010_Nortec-GS_IM

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.

4 3

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

10 Receiving and Storage Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

3 Receiving and Storage

3.1 Inspection

All Condair products are shipped F.O.B at the factory. All damage, breakage or loss claims are the responsibility 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.

3.2 Storage and Transportation

Storage

Store the Nortec GS humidifier in its original packaging inside a protected area that meets the following 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 packaging where possible.

11Product OverviewNortec GS 2596645_B_EN_2010_Nortec-GS_IM

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 ranging 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.

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

12 Product Overview Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

The breakdown of the model number is shown below.

Nortec GS 150 CS -Series II

Series (Gas)

Steam Capacity lb/h

Efficiency CS - Condensing High Efficiency NX - Ultra-Low NOx Condensing MT - Mid-Temperature

Figure 4: Model Number Breakdown (Example)

4.3 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 Fuel Blower Speed

Input BTUh (kW)

Steam Capacity lb/h (kg/h)

Manifold Pressure in H2O (Pa)

Nortec GS 50-CS Natural gas Maximum 62,000 (18.2) 50 (23) -0.01 (-2.5)

Minimum 12,400 (3.6) 10 (4.5) -0.01 (-2.5)

Propane Maximum 62,000 (18.2) 50 (23) -0.01 (-2.5)

Minimum 13,000 (3.8) 10 (4.5) -0.01 (-2.5)

Nortec GS 100-CS Natural gas/ Propane

Maximum 124,000 (36.4) 100 (45) -0.01 (-2.5)

Minimum 24,800 (7.3) 20 (9) -0.01 (-2.5)

Nortec GS 150-CS Natural gas/ Propane

Maximum 186,000 (54.5) 150 (68) -0.01 (-2.5)

Minimum 37,200 (10.9) 30 (13.6) -0.01 (-2.5)

Nortec GS 200-CS Natural gas/ Propane

Maximum 248,000 (72.7) 200 (91) -0.01 (-2.5)

Minimum 24,800 (7.3) 20 (9) -0.01 (-2.5)

Nortec GS 300-CS Natural gas/ Propane

Maximum 372,000 (109.0) 300 (136) -0.01 (-2.5)

Minimum 37,200 (10.9) 30 (13.6) -0.01 (-2.5)

Nortec GS 450-CS Natural gas/ Propane

Maximum 558,000 (163.5) 450 (204) -0.01 (-2.5)

Minimum 37,200 (10.9) 30 (13.6) -0.01 (-2.5)

Nortec GS 600-CS Natural gas/ Propane

Maximum 744,000 (218.0) 600 (272) -0.01 (-2.5)

Minimum 37,200 (10.9) 30 (13.6) -0.01 (-2.5)

13Product OverviewNortec GS 2596645_B_EN_2010_Nortec-GS_IM

Ultra-Low NOx Condensing (NX) Model Specifications

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

Model Fuel Blower Speed

Input BTUh (kW)

Steam Capacity lb/h (kg/h)

Manifold Pressure in H2O (Pa)

Nortec GS 50-NX Natural gas Maximum 65,000 (19.0) 50 (23) -0.01 (-2.5)

Minimum 13,000 (3.8) 10 (4.6) -0.01 (-2.5)

Nortec GS 100-NX Natural gas Maximum 120,000 (35.2) 100 (45) -0.01 (-2.5)

Minimum 26,000 (7.6) 20 (9) -0.01 (-2.5)

Nortec GS 150-NX Natural gas Maximum 187,500 (55.0) 150 (68) -0.01 (-2.5)

Minimum 39,000 (11.4) 30 (13.6) -0.01 (-2.5)

Nortec GS 200-NX Natural gas Maximum 240,000 (70.3) 200 (91) -0.01 (-2.5)

Minimum 26,000 (7.6) 20 (9) -0.01 (-2.5)

Nortec GS 300-NX Natural gas Maximum 375,000 (109.9) 300 (136) -0.01 (-2.5)

Minimum 39,000 (11.4) 30 (13.6) -0.01 (-2.5)

Nortec GS 450-NX Natural gas Maximum 562,500 (164.9) 450 (204) -0.01 (-2.5)

Minimum 39,000 (11.4) 30 (13.6) -0.01 (-2.5)

Nortec GS 600-NX Natural gas Maximum 750,000 (219.8) 600 (272) -0.01 (-2.5)

Minimum 39,000 (11.4) 30 (13.6) -0.01 (-2.5)

Mid-Temperature (MT) Model Specifications

Table 3: Mid-Temperature (MT) Model Specifications

Fuel Blower Speed Input BTUh (kW)

Steam Capacity lb/h (kg/h)

Manifold Pressure in H2O (Pa)

Model Nortec GS 50-MT

Natural gas Maximum 70 000 (20.5) 50 (23) -0.01 (-2.5)

Minimum 14 000 (4.1) 10 (4.6) -0.01 (-2.5)

Model Nortec GS 100-MT

Natural gas Maximum 140 000 (41.0) 100 (45) -0.01 (-2.5)

Minimum 28 000 (8.2) 20 (9) -0.01 (-2.5)

Model Nortec GS 150-MT

Natural gas Maximum 210 000 (61.5) 150 (68) -0.01 (-2.5)

Minimum 42 000 (12.3) 30 (13.6) -0.01 (-2.5)

Model Nortec GS 200-MT

Natural gas Maximum 280 000 (82.1) 200 (91) -0.01 (-2.5)

Minimum 28 000 (8.2) 20 (9) -0.01 (-2.5)

Model Nortec GS 300-MT

Natural gas Maximum 420 000 (123.1) 300 (136) -0.01 (-2.5)

Minimum 42 000 (12.3) 30 (13.6) -0.01 (-2.5)

Model Nortec GS 400-MT

Natural gas Maximum 630 000 (184.6) 450 (204) -0.01 (-2.5)

Minimum 42 000 (12.3) 30 (13.6) -0.01 (-2.5)

Model Nortec GS 600-MT

Natural gas Maximum 840 000 (246.2) 600 (272) -0.01 (-2.5)

Minimum 42 000 (12.3) 30 (13.6) -0.01 (-2.5)

14 Product Overview Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

High Altitude De-rating

All high altitude installations have a de-rating of the input capacity. All Canadian models have an automatic 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 De-rating (%)

Feet (ft) Meters (m)

0-2000 0-610 0

2001-3000 610-915 8

3001-4000 915-1220 12

4001-4500 1220-1370 16

4501 and higher 1370 and higher Contact factory

4.4 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 Application

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

Note: only CS models can be configured for propane.

4.5 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 Application

Steam distributor – ASD, BSD, CSD

Steam distribution system for use in an air duct.

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

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

Blower pack (remote-mounted)

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.

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

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.

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

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

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.

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

Outdoor temperature sensor 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.

Mounting stand (CS/NX/MT models only)

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

15Mounting and Installation WorkNortec GS 2596645_B_EN_2010_Nortec-GS_IM

5 Mounting and Installation Work

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 unqualified personnel, or the use of equipment/parts that are not authorized by Condair.

Qualification of personnel

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.

16 Mounting and Installation Work Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

5.2 Installation Overview

5.2.1 Typical Installation – Compact Units

23 7

25 26

11 10

1, 2

2, 5

Figure 5: Installation Overview – Compact Unit 1 Humidistat, On/Off (for humidity control) 2 Humidity sensor or modulating humidis-tat (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 loop) 29 Double check valve backflow preventer

(supplied by others)

17Mounting and Installation WorkNortec GS 2596645_B_EN_2010_Nortec-GS_IM

5.2.2 Typical Installation – Full-Size Units

1, 2

2, 56

Nortec GS 200-600Nortec GS150

Figure 6: Installation Overview – Full-Size Units (Nortec GS 150 Shown) 1 Humidistat, On/Off (used for humidity control) 2 Humidity sensor or modulating humidis-tat (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

18 Mounting and Installation Work Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

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 13.

� 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).

� 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.

19Mounting and Installation WorkNortec GS 2596645_B_EN_2010_Nortec-GS_IM

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 37.

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 Installation" on page 39.

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 7.

Table 7: Gas Operating Pressure Gas Type Operating Pressure in H2O (kPa)

Minimum Maximum

Natural gas (North America) 5 (1.3) 10.0 (2.5)

Propane (North America) 9.0 (2.2) 14.0 (3.5)

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

20 Mounting and Installation Work Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

� Gas Line Size Model Minimum Gas Line Size in (mm) Gas Inlet Size

Nortec GS 50 1/2 (15) 1/2 in NPT (female)

Nortec GS 100 1/2 (15) 1/2 in NPT (female)

Nortec GS 150 3/4 (20) 3/4 in NPT (female)

Nortec GS 200 1 (25) 1 in NPT (male)

Nortec GS 300 1 (25) 1 in NPT (male)

Nortec GS 450 1-1/4 (32) 1 in NPT (male)

Nortec GS 600 1-1/4 (32) 1 in NPT (male)

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.

5.4 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)*

12 in (0.30 m) *

12 in (0.30 m) *

A

B

C

D

E F

Figure 7: Humidifier Suggested Clearances

* minimum

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Table 8: Required Clearances*

Model Overhead

Clearance "A" in (mm)

Right Side Clearance "B" in (mm)

Floor Stand Height "C" in (mm)

Front Clearance "D" in (mm)

Left Side Clearance "E" in (mm)

Rear Clearance "F" in (mm)

Nortec

GS 50

16 (406) 24 (610) 26 (670) 36 (914) 0 (0) 0 (0)

Nortec

GS 100

16 (406) 24 (610) 26 (670) 36 (914) 0 (0) 0 (0)

Nortec

GS 150

16 (406) 24 (610) 17 (426)** 36 (914) 0 (0) 0 (0)

Nortec

GS 200

16 (406) 24 (610) 17 (426) 36 (914) 0 (0) 0 (0)

Nortec

GS 300

16 (406) 24 (610) 17 (426) 36 (914) 0 (0) 0 (0)

Nortec

GS 450

16 (406) 24 (610) 17 (426) 36 (914) 0 (0) 0 (0)

Nortec

GS 600

16 (406) 24 (610) 17 (426) 36 (914) 0 (0) 0 (0)

* Consult local and national installation codes.

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

Table 9: Suggested Clearances (for ease of service and maintenance)

Model Overhead

Clearance "A" in (mm)

Right Side Clearance "B" in (mm)

Floor Stand Height "C" in (mm)

Front Clearance "D" in (mm)

Left Side Clearance "E" in (mm)

Rear Clearance "F" in (mm)

Nortec

GS 50

36 (914) 30 (762) 26 (670) 36 (914) 0 (0) 0 (0)

Nortec

GS 100

36 (914) 30 (762) 26 (670) 36 (914) 0 (0) 0 (0)

Nortec

GS 150

36 (914) 30 (762) 17 (426) 36 (914) 0 (0) 0 (0)

Nortec

GS 200

36 (914) 30 (762) 17 (426) 36 (914) 0 (0) 0 (0)

Nortec

GS 300

36 (914) 30 (762) 17 (426) 36 (914) 0 (0) 0 (0)

Nortec

GS 450

36 (914) 30 (762) 17 (426) 36 (914) 0 (0) 0 (0)

Nortec

GS 600

36 (914) 30 (762) 17 (426) 36 (914) 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 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 70.

22 Mounting and Installation Work Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

Table 10: Nortec GS Humidifier Overall Dimensions and Weights (includes stands)

Nortec GS CS/ NX Model

Dimensions in (mm)

Weight lb (kg)

Height Height (with stand) Width Depth Net Operating Floor

Stand

GS 50-CS/NX 43.3 (1101) 65 (1643) 25.2 (640) 21.4 (542) 177 (80) 368 (167) 47.4 (21.5)

GS 100-CS/NX 43.3 (1101) 65 (1643) 25.2 (640) 21.4 (542) 197 (89) 388 (176) 47.4 (21.5)

GS 150-CS/NX 54.6 (1387) 70 (1788) 28.2 (717) 29.0 (738) 309 (140) 589 (267) 39.7 (18)

GS 200-CS/NX 54.6 (1387) 70 (1788) 40.4 (1026) 29.0 (738) 426 (193) 952 (432) 41.9 (19)

GS 300-CS/NX 54.6 (1387) 70 (1788) 40.4 (1026) 29.0 (738) 437 (198) 963 (437) 41.9 (19)

GS 450-CS/NX 54.6 (1387) 70 (1788) 57.0 (1448) 29.0 (738) 547 (248) 1459 (662) 57.3 (26)

GS 600-CS/NX 54.6 (1387) 70 (1788) 66.9 (1700) 29.0 (738) 821 (372) 1967 (892) 59.5 (27)

Nortec GS MT Models

Dimensions in (mm)

Weight lb (kg)

Height Height (with stand) Width Depth Net Operating Floor

Stand

GS 50-MT 43.3 (1101) 65 (1643) 25.2 (640) 21.4 (542) 161 (73) 352 (160) 47.4 (21.5)

GS 100-MT 43.3 (1101) 65 (1643) 25.2 (640) 21.4 (542) 181 (82) 373 (169) 47.4 (21.5)

GS 150-MT 54.6 (1387) 70 (1788) 28.2 (717) 29.0 (738) 289 (131) 569 (258) 39.7 (18)

GS 200-MT 54.6 (1387) 70 (1788) 40.4 (1026) 29.0 (738) 406 (184) 933 (423) 41.9 (19)

GS 300-MT 54.6 (1387) 70 (1788) 40.4 (1026) 29.0 (738) 417 (189) 944 (428) 41.9 (19)

GS 450-MT 54.6 (1387) 70 (1788) 57.0 (1448) 29.0 (738) 498 (226) 1411 (640) 57.3 (26)

GS 600-MT 54.6 (1387) 70 (1788) 66.9 (1700) 29.0 (738) 772 (350) 1918 (870) 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.

23Mounting and Installation WorkNortec GS 2596645_B_EN_2010_Nortec-GS_IM

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. Open the accessory box supplied and setup the mounting bracket:

a. At the desired position on the vertical mounting surface, secure one end of the mounting bracket to the wall using a suitable ø 3/8" (10 mm) screw and a plastic plug.

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

c. Install ø 3/8" (10 mm) screws and appropriate plastic plugs at the attachment points and secure the mounting bracket to the wall. Ensure the bracket is level before tightening screws.

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

5. Remove door panels of the humidifier, then carefully lower the humidifier onto the mounting bracket that is secured to the wall. Through the back panel, secure the humidifier to the bracket with screws.

6. Reinstall the door panels.

(option)

- B -

- A -

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

24 Mounting and Installation Work Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

5.4.4 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.

5.4.5 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. Place the floor stand at the desired position on the floor. Use shims to level the stand (as necessary) and if desired, secure the stand to the floor with 3/8 in (10 mm) bolts.

4. 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

25Mounting and Installation WorkNortec GS 2596645_B_EN_2010_Nortec-GS_IM

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

5.4.6 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?

5.5 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 manifolds

– refer to their respective manuals for installation details.

Refer to "Site Requirements" on page 18 for the steam and condensate line installation requirements.

26 Mounting and Installation Work Nortec GS 2596645_B_EN_2010_Nortec-GS_IM

5.5.1 Installing the Main Steam Pipe

12 in (300 mm) *

12 in (300 mm) * θ > 2° θ > 10° θ > 10°

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 11 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.

27Mounting and Installation WorkNortec GS 2596645_B_EN_2010_Nortec-GS_IM

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 11 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 11: Steam Pipe Diameter

Model

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 Backpres-sure in H2O (kPa)Uninsulated Insulated Max. Recommended

Max.

Nortec GS 50 1.5 (38) 1.75 (45) 0.10 (0.15) 0.03 (0.04) 50 (14) 20 (6) 6 (1.49)

Nortec GS 100 1.5 (38) 1.75 (45) 0.10 (0.15) 0.03 (0.04) 70 (21) 20 (6) 6 (1.49)

Nortec GS 150 3 (76) 3 (76) 0.16 (0.24) 0.04 (0.06) 100 (30) 33 (10) 10 (2.49)

Nortec GS 200 3 (76) 3 (76) 0.16 (0.24) 0.04 (0.06) 120 (37) 33 (10) 10 (2.49)

Nortec GS 300 3 (76) 3 (76) 0.16 (0.24) 0.04 (0.06) 150 (46) 33 (10) 10 (2.49)

Nortec GS 450 4 (102) 4 (102) 0.20 (0.30) 0.05 (0.07) 180 (55) 33 (10) 10 (2.49)

Nortec GS 600 4 (102) 4 (102) 0.20 (0.30) 0.05 (0.07) 230 (79) 33 (10) 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 11. Exceeding the maximum length can affect performance of the unit, and may void the warranty. Also refer to Table 12 on page 27 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.

Table 12: Equivalent Length of Typical Steam Line Fittings Nominal Tube Size in (mm) Standard 90° Elbow ft (m) Standard 45° Elbow ft (m) Side-Outlet Tee ft (m)

1.75 (45) 3.5 (1.1) 1.75 (0.5) 7 (2.1)

3 (75) 5 (1.5) 2.5 (0.8) 11 (3.4)

4 (100) 8 (2.4) 4 (1.2) 15 (4.6)

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

28 Mounting and Installation Work Nortec GS 2596645_B_EN_2010_Nortec-GS_IM 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.

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, clean 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.

Minimum Upslope 10 o

Minimum Downslope 2 o

Min.

12 in (300 mm)

12 in (300 mm)

Min.

12 in (300 mm)

12 in (300 mm)

Minimum

Downslope 1.2 o

Steam Line Condensate Drain Line

12 in (300 mm)

2 in (50 mm)

12 in (300 mm)

½ in (12 mm)

1 in (25 mm)

48 in (1.2 m)

1 in (25 mm)

48 in (1.2 m)

Minimum

Downslope 1.2 o

Figure 13: Steam and Condensate Line

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.

29Mounting and Installation WorkNortec GS 2596645_B_EN_2010_Nortec-GS_IM

An online-sign.com production sign ref st151432911270

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…