Condair 2596645-B Nortec GS Series Installation guide

Condair 2596645-B Nortec GS Series Installation guide
2596645_B_EN_2010_Nortec-GS_IM
NORTEC
INSTALLATION MANUAL
Gas-fired Steam Humidifier
Nortec GS
Series II
Humidification and Evaporative Cooling
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 vapors and liquids in the vicinity of this or any other
appliance.
WHAT TO DO IF YOU SMELL GAS
•
DO NOT try to light any appliance.
•
DO NOT touch any electrical switch.
•
DO NOT use any phone in 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
1.1
Introduction
Notes on this manual
6
6
2
For Your Safety
7
3
3.1
3.2
Receiving and Storage
Inspection
Storage and Transportation
10
10
10
4
4.1
4.2
4.3
4.4
4.5
Product Overview
General Description
Model Designation
Model Specifications
Options
Accessories
11
11
11
12
14
14
5
5.1
5.2
5.2.1
5.2.2
5.3
5.4
5.4.1
5.4.1.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
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
Mounting and Installation Work
General
Installation Overview
Typical Installation – Compact Units
Typical Installation – Full-Size Units
Site Requirements
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 Installation
Water Connections
Installing Exhaust Condensate Drain Line (CS/NX Model Only)
Water Connections
Water Connections Checklist
Combustion Air Connection
Space Air Installation
Sealed Combustion Installation
Combustion Air Checklist
Exhaust Vent Installation
General Requirements
Exhaust Vent Installation for CS/NX Model
Installation as a Category III Appliance
15
15
16
16
17
18
20
20
21
22
23
24
24
25
25
26
27
30
31
32
32
33
34
36
37
37
37
39
39
39
44
44
4 Contents
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
5.8.2.2
Installation as a Category IV Appliance
5.8.2.3
Installation Requirements for Category III/IV Appliances.
5.8.3
Exhaust Vent Checklist
5.9
Gas Connection
5.9.1
Gas Connection, Compact and Full-Size Unit
5.9.2
Gas Leakage Test
5.9.3
Gas Connection Checklist
5.10
Humidity Control Systems
5.10.1
Control Device Locations
5.10.2
Permissible Control Signal Inputs
5.11
Electrical Connections
5.11.1
General
5.11.2
Wiring Diagrams
5.11.2.1
Nortec GS - All Units
5.11.2.2
Nortec GS - 450/600
5.11.3
External Connections
5.11.3.1
External Security Loop
5.11.3.2
Modulating Demand or Humidity/Limiter Signal
5.11.3.3
On/Off Humidistat Signal
5.11.3.4
Full Tank Blowdown Signal Connection
5.11.3.5
Remote Fault PCB Connections
5.11.3.6
Single-Phase Power Supply Connection
5.11.3.7
Modbus Connection
5.11.4
Connecting Multiple Units Using Linkup
5.11.5
Electrical Connections Checklist
44
44
45
46
46
47
47
48
48
48
49
49
50
50
51
52
52
52
54
54
54
55
56
57
58
6
6.1
6.1.1
6.1.2
Commissioning
Commissioning Checklist
Pre-Start-Up Checklist
Performance Checklist
59
59
59
65
7
Installation Checklist
67
8
8.1
8.2
Product Specifications
Weights
Dimensions
70
70
70
9
9.1
9.2
Performance and Operating Data
Performance Data
Operating Data
75
75
75
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Contents 5
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.
6 Introduction
2596645_B_EN_2010_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
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 electrostatic discharge (ESD).
Prevention: Take appropriate measures to protect the electronic components inside the unit against
damage caused by electrostatic discharge (ESD).
Nortec GS
2596645_B_EN_2010_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 technician 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 humidifier 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 equipment 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_B_EN_2010_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
1
2
3
4
Figure 1: Safety Labels
1
2
3
4
5
Nortec GS
Label, gas safety warning
Label, keep cabinet closed warning
Label, installation guidelines
Label, general safety warning
Label, specification
2596645_B_EN_2010_Nortec-GS_IM
For Your Safety 9
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.
–
3.2
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 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.
10 Receiving and Storage
2596645_B_EN_2010_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 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.
5
4
2
1
3
Figure 2: Nortec GS-Series II Humidifiers
1
2
4.2
Nortec GS 50/100 (compact housing)
Nortec GS 150 (full-size housing)
3
4
Nortec GS 200/300 (full-size housing)
Nortec GS 450 (full-size housing)
5
Nortec GS 600 (full-size housing)
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_B_EN_2010_Nortec-GS_IM
Product Overview 11
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)
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)
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)
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)
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)
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)
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)
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)
Nortec GS 100-CS
Nortec GS 150-CS
Nortec GS 200-CS
Nortec GS 300-CS
Nortec GS 450-CS
Nortec GS 600-CS
12 Product Overview
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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)
Maximum
120,000 (35.2)
100 (45)
-0.01 (-2.5)
Minimum
26,000 (7.6)
20 (9)
-0.01 (-2.5)
Maximum
187,500 (55.0)
150 (68)
-0.01 (-2.5)
Minimum
39,000 (11.4)
30 (13.6)
-0.01 (-2.5)
Maximum
240,000 (70.3)
200 (91)
-0.01 (-2.5)
Minimum
26,000 (7.6)
20 (9)
-0.01 (-2.5)
Maximum
375,000 (109.9)
300 (136)
-0.01 (-2.5)
Minimum
39,000 (11.4)
30 (13.6)
-0.01 (-2.5)
Maximum
562,500 (164.9)
450 (204)
-0.01 (-2.5)
Minimum
39,000 (11.4)
30 (13.6)
-0.01 (-2.5)
Maximum
750,000 (219.8)
600 (272)
-0.01 (-2.5)
Minimum
39,000 (11.4)
30 (13.6)
-0.01 (-2.5)
Nortec GS 100-NX
Nortec GS 150-NX
Nortec GS 200-NX
Nortec GS 300-NX
Nortec GS 450-NX
Nortec GS 600-NX
Natural gas
Natural gas
Natural gas
Natural gas
Natural gas
Natural gas
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
Nortec GS
Maximum
840 000 (246.2)
600 (272)
-0.01 (-2.5)
Minimum
42 000 (12.3)
30 (13.6)
-0.01 (-2.5)
2596645_B_EN_2010_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 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
4.4
Feet (ft)
Meters (m)
0-2000
0-610
De-rating (%)
0
2001-3000
610-915
8
3001-4000
915-1220
12
4001-4500
1220-1370
16
4501 and higher
1370 and higher
Contact factory
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
4.5
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
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 (remotemounted)
For direct room humidification or use in conditioned spaces without a built-in air distribution 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.
14 Product Overview
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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, 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 assistance is required, 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_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 15
5.2
Installation Overview
5.2.1
Typical Installation – Compact Units
1, 2
3
28
27
17
24
6
26
25
2, 5
4
7
16
21
12
29
15
18
14
10
9
13
22
23
11
19
8
20
7
Figure 5: Installation Overview – Compact Unit
1
2
Humidistat, On/Off (for humidity control)
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
16 Mounting and Installation Work
12
13
14
15
16
17
18
19
20
21
22
23
Inlet, gas
Supply line, water
Trap, sediment
Supply line, gas
Valve, manual gas shutoff
Switch, disconnect, electrical fused
(dedicated)
Fitting, union
Valve, water shutoff
Filter, water (optional, but recommended)
Fitting, union
Drain line
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)
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
5.2.2
Typical Installation – Full-Size Units
1,2
3
23
22
20
19
21
6
2,5
16
4
7
9
10
8
11
12
24
15
Nortec GS150
13
14
Nortec GS 200-600
17
7
18
Figure 6: Installation Overview – Full-Size Units (Nortec GS 150 Shown)
1
2
3
4
5
6
7
8
Nortec GS
Humidistat, On/Off (used for humidity
control)
Humidity sensor or modulating humidistat (used for control of the space in the
return duct, high limit in the supply duct)
Duct, return air
Duct, supply air
Humidistat, On/Off, high limit (external
security loop)
Drain line, condensate (with trap)
Funnel, air gap (with optional trap)
Supply line, gas
9
10
11
12
13
14
15
16
Manual gas shutoff valve
Fitting, union
Trap, sediment
Filter, water (optional, but recommended)
Valve, water shutoff
Supply line, water
Fitting, union
Switch, disconnect, electrical fused
(dedicated)
17 Drain line
18 Drain line, exhaust condensate (CS/NX
model only)
2596645_B_EN_2010_Nortec-GS_IM
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)
Mounting and Installation Work 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 sufficiently 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 ambient 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 maintenance.
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 drinking 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.
18 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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 building 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 regulations 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 humidifier 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
Natural gas (North America)
Propane (North America)
Operating Pressure
in H2O (kPa)
Minimum
Maximum
5 (1.3)
10.0 (2.5)
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.
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 19
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 specification 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)*
A
12
in
0
0.3
(
m)
*
12
in
(
0
0.3
*
m)
E
F
B
D
C
Figure 7: Humidifier Suggested Clearances
* minimum
20 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
Table 8: Required Clearances*
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)
Model
* 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)
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)
Model
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.
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 21
Table 10: Nortec GS Humidifier Overall Dimensions and Weights (includes stands)
Nortec GS CS/
NX Model
Height
Height
(with stand)
Weight
lb (kg)
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
GS 50-MT
5.4.2
Dimensions
in (mm)
Dimensions
in (mm)
Height
Height
(with stand)
Weight
lb (kg)
Width
Depth
Net
Operating
Floor
Stand
161 (73)
352 (160)
47.4 (21.5)
43.3 (1101)
65 (1643)
25.2 (640)
21.4 (542)
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)
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 Mounting and Installation Work
2596645_B_EN_2010_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. 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.
-A-
(option)
-BFigure 9: Mounting, Compact Unit. A - Wall mount , B - Floor mount (optional)
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 23
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
24 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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.
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 25
5.5.1
Installing the Main Steam Pipe
5
6
12 in (300 mm) *
12 in (300 mm) *
θ > 2°
θ > 10°
θ > 10°
2
3
4
1
6
5
Figure 12: Main Steam Line Installation
1
2
3
Steam outlet, humidifier
4
Clamp, gear (supplied)
5
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.
26 Mounting and Installation Work
Cuff, hose (supplied)
6
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.
2596645_B_EN_2010_Nortec-GS_IM
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.
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) exclusively. 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
Equivalent Steam Line
Length
ft (m)
lb/ft (kg/m)
Uninsulated
Insulated
Recommended
Max.
Max.
Max.
Allowable
Backpressure
in H2O (kPa)
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
Nortec GS
–
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 distributor. 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
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 27
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 vapors. 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.
Steam Line
2 in
(50 mm)
Condensate Drain Line
o
Minimum Upslope 10
12 in
(300 mm)
Min.
12 in (300 mm)
o
Minimum Downslope 2
½ in
(12 mm)
Min.
12 in (300 mm)
12 in (300 mm)
12 in (300 mm)
12 in
(300 mm)
1 in
(25 mm)
Minimum
o
Downslope 1.2
48 in
(1.2 m)
1 in
(25 mm)
Minimum
o
Downslope 1.2
48 in
(1.2 m)
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.
28 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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
Nortec GS
sign ref st151432911270
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 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
4
D
2, 5
3, 5
>10°
L
>1.2°
Figure 14: Common Steam and Condensate Line Installation Mistakes
1
2
3
4
5
D
L
Y
The condensate trap is located less than the required minimum 12 in (300 mm) below the steam distributor.
No condensate trap is installed at the horizontal-to-vertical transition.
The steam line does not run straight up for the required minimum 12 in (300 mm) before continuing on to the steam distributor.
Steam line is not sloped – upslope minimum 10° downslope minimum 2° is not maintained.
The required long radius elbow (for rigid pipe) is not used.
Diameter of condensate trap (minimum) is 12 in (300 mm).
Vertical steam line distance from the humidifier is 12 in (300 mm) (minimum).
Condensate trap distance below the steam distributor is 12 in (300 mm) (minimum).
30 Mounting and Installation Work
2596645_B_EN_2010_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 11 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?
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 31
5.6
Water Installation
Refer to "Site Requirements" on page 18 for the water supply and drain requirements. Read "Water Connections"
on page 34, and perform the water connections as shown in Figure 15 on page 32.
5.6.1
Water Connections
1
2
1
4
8
3
5
2
4
5
6
8
3
6
7
7
Figure 15: Water Supply Connections. Nortec GS 50/100 and Nortec GS 150 shown
1
2
3
Inlet, fill valve – 3/4 in BSPP
(plastic thread)
Adaptor, 3/4 in BSPP to 1/2 in NPT
(supplied)
Supply line, water – minimum 1/2 in
(13 mm) diameter
32 Mounting and Installation Work
4
5
6
Outlet, drain, 1 in (25 mm) O.D.
(unthreaded)
Clamp, hose (not supplied)
Hose, drain – minimum downslope of
1.2°, and must not touch sides or
bot-tom of funnel
2596645_B_EN_2010_Nortec-GS_IM
7
8
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).
Must be located within 3 ft (1 m) from
the unit (or according to code)
Double check valve backflow preventer
(supplied by others)
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
4
2
2
-B1
3
-C-
-A-
3
5
4
1
2
6
Compact
Full-Size
Figure 16: Exhaust Condensate Drain Line.
A - Nortec GS 50-100, B - Nortec GS 150, C - Nortec GS 200-600.
1
2
3
4
5
6
Nortec GS
Trap, internal condensate (Nortec GS 50-150) – primed with water
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.
Funnel, air gap – funnel must be located below the condensate outlet and within 3 ft (1 m) of the unit (or according to code)
Outlet, condensate drain
Floor stand (default for Nortec GS 150-600)
Bracket, p-trap to floor stand
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 33
5.6.3
Water Connections
Water Supply
The water supply installation is to be carried out according to Figure 15 on page 32 and the applicable
local plumbing codes.
–
Admissible water supply pressure regulated to 30-80 psig (207-550 kPa).
–
Admissible water supply temperature is 34-77 ˚F (1-25 ˚C). Recommended temp.: 34-60 °F (1-15 °C)
–
Notes on water quality:
•
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 10 l/min for Condair GS 23-130 unit or 20 l/
min for Condair GS 195-260 units. The water quality must meet the requirements listed below.
Table 13: Water Quality Requirements
•
Water Type
Hardness
gpg (PPM)
Alkalinity
pH
Chloride
PPM
Conductivity
µS/cm
Silica
PPM
Potable
0-15 (0-256)
6.5-7.5
0-40
0-1500
0-14
Treated
0-0.99 (0-17)
7-7.5
0-40
0-100
0-1
The use of additivies such as corrosion inhibitors, disinfectants, etc. is not allowed, since these
additives may endanger health and affect proper operation.
–
The water supply piping to the humidifier should have a minimum internal diameter of 1/2 in (12 mm)
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).
–
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.
–
If water hammers cannot be avoided in the supply line, a water shock arrestor must be installed.
–
Important! The water supply line must be well flushed out before being connected to the unit.
CAUTION!
Risk of damage to the plastic threads in the fill valve!
Prevention: Hand-tighten the NPT adaptor to the fill valve. The thread at the humidifier connection (inlet) is made of plastic.
Water Drain
The water drain is to be installed according to Figure 15 on page 32 and the applicable local plumbing codes.
–
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).
–
Attach the drain hose in such a way that it cannot slip out of the funnel.
–
The air gap funnel (with trap) 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 permitted for DI water).
–
The building waste water installation (including funnel and trap) should be made of a material rated
to handle high temperature discharge water at 212 °F (100 °C).
34 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
–
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.
–
Drain water cooling reduces the drain water exiting the unit to 140 ˚F (60 ˚C).
Exhaust condensate drain
The exhaust condensate drain is to be installed according to Figure 16 on page 33 and the applicable
local plumbing codes.
Nortec GS
–
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.
–
Prime the condensate trap inside the unit (CS/NX model only) with water.
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 35
5.6.4
Water Connections Checklist
Check the following to ensure that the water connections for the humidifier have been installed correctly:
–
Water supply
Water quality meet the requirements listed in Table 13 on page 34?
Filter valve (or shutoff valve and 125μm filter) and union fitting installed in supply line close to
the humidifier?
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
installation regulations?
Water supply piping to humidifier minimum 1/2 in (13 mm) diameter?
Are pressure-proof materials, certified for use with drinking water systems, used? 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 pressure regulated to 30-80 psig (207-550 kPa) and surge-protected?
Water supply system tight?
Water supply line flushed? Strainer in the fill valve free of debris?
–
Water drain
Air gap (open drain) 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 (open) 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 drain line flushed?
–
Exhaust condensate drain (CS models only)
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?
36 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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 37 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 . Refer to Table 15 on page 38 for outside diameter of elbow.
Table 14: Room Fresh Air Intake Cross-sectional Area
Model
Minimum Cross-sectional Area
in2 (cm2)
Nortec GS 50
8 (50)
Nortec GS 100
13 (88)
Nortec GS 150
18 (120)
Nortec GS 200
23 (150)
Nortec GS 300
35 (225)
Nortec GS 450
53 (350)
Nortec GS 600
71 (460)
1
2
Figure 17: Space Air Installation – GS 150-600
1
2
5.7.2
Elbow, fitted with screen (not supplied).
Intake air inlet (full-size unit)
Sealed Combustion Installation
A sealed combustion installation draws fresh combustion air from the outside. Sealed combustion
requirements 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.
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 37
In addition, refer to "Sealed Combustion Installation Requirements" on page 38.
Table 15: Air Intake Vent Diameter
Nortec Model
Intake Vent Diameter
in (mm)
GS 50*
2 (50)
GS 100
GS 150
3 (75)
GS 200
GS 300
4 (100)
GS 450
GS 600
6 (150)
* Requires 3 in (75 mm) adapter
shows the sealed combustion connection for the compact and full-size Nortec GS humidifiers.
3 ft
(1.0
m)*
6
4
n
i
12
3
30
(0.
m)
*
1
12
in
30
(0.
m)
*
5
4
7
2
* minimum
Figure 18: Sealed Combustion Connection (compact shown left)
1
Air intake terminal (elbow) – terminal
located outside building and facing
down (not supplied), 12 in (30cm) from
wall.
2
3
4
5
Air intake – wrapped with insulation
(not supplied)
Intake air inlet (full-size unit)
Exhaust gas outlet
Intake air inlet (compact unit)
6
7
Exhaust gas terminal ("Tee") – terminal
located outside building and opening
vertical (not supplied), 12in (30cm)
from wall.
Air intake adapter (compact unit)
Sealed Combustion Installation Requirements
In addition to the requirements of the applicable national and local codes for sealed combustion installations,
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.
38 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
–
The intake vent diameter is listed in Table 15 on page 38. 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.
5.7.3
–
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 on page 38. 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 (see Table 14 on page 37 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 used?
Vent diameter as listed in Table 15 on page 38, and uniform over the entire run?
All joints and seams sealed with appropriate sealant?
Intake vent correctly supported?
Spacing between air intake terminal and exhaust vent terminal minimum 3 ft (1 m)?
Intake vent heated and insulated in cold climates?
5.8
Exhaust Vent Installation
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:
–
Nortec GS
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.
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 39
–
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 accumulation 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 maintained 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 58.
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.
40 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
Table 16: Exhaust Vent Details - CS/NX/MT
Model
Appliance
Category
Exhaust Outlet
size
Exhaust Vent
Diameter
Category IV
60 mm*
2 in
Nortec GS 100-CS/NX
Category IV
80 mm*
3 in
Nortec GS 150-CS/NX
Category IV
80 mm*
3 in
Nortec GS 200-CS/NX
Category IV
100 mm*
4 in
Nortec GS 300-CS/NX
Category IV
100 mm*
4 in
Nortec GS 450-CS/NX
Category IV
150 mm*
6 in
Nortec GS 600-CS/NX
Category IV
150 mm*
6 in
MT
CS/NX
Nortec GS 50-CS/NX
Nortec GS 50-MT
Category IV
3 in
3 in
Nortec GS 100-MT
Category IV
3 in
3 in
Nortec GS 150-MT
Category IV
3 in
3 in
Nortec GS 200-MT
Category IV
4 in
4 in
Nortec GS 300-MT
Category IV
4 in
4 in
Nortec GS 450-MT
Category IV
6 in
6 in
Nortec GS 600-MT
Category IV
6 in
6 in
Vent Type
CPVC or
3 in BH (stainless steel)
CPVC or
Type BH (stainless steel)
Type BH (stainless steel)
* 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:
Nortec GS
–
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.
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 41
Figure 19 on page 42 and Figure 20 on page 43 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 58,
and "Gas Connection" on page 46 . Adhere to all national or local codes.
A
1
B
2
3
4
2°
12
11
5
10
9
6
8
C
D
7
Figure 19: Vertical Venting (with Optional Sealed Combustion Hookup) – Category III/IV
1
2
3
4
5
6
7
8
9
10
11
Terminal, air intake – elbow pointed down (for optional sealed combustion vertical hookup)
Cap, vent, exhaust – UL/CSA-listed
Flashing
Air gap – must be maintained to local codes
"Tee", condensate
Terminal, air intake – 90° elbow pointed down, for optional sealed combustion hookup outside
Drain, condensate (with trap) – minimum 12 in (300 mm) trap height, and connected to floor drain or condensate pump
Inlet, air intake
Outlet, exhaust
Vent, air intake – for optional sealed combustion horizontal hookup
Vent, exhaust, type BH – refer to Table 16 on page 41 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
42 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
8
2 ft
(610 mm) *
9
1
12 in (300 mm) *.
7
2
6
5
4
3f
t (1
m)
*
3
Figure 20: Horizontal Venting (with Optional Sealed Combustion Hookup) – Category III/IV
1
2
3
4
5
6
7
8
9
Nortec GS
Terminal, exhaust ("Tee")
Terminal, air intake (90° elbow) – pointed down, for optional sealed combustion hookup
Outlet, exhaust outlet
Inlet, air intake
Vent, air intake – for optional sealed combustion horizontal hookup
Drain, condensate (with trap) – minimum 12 in (300 mm) trap height, and connected to floor drain or condensate pump
"Tee", condensate
Hanger
Vent, exhaust, type BH – refer to Table 16 on page 41 for vent details. All joints air and water-tight. Full condensate "Tee" with
condensate port and trap.
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 43
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 39.
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 39.
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
2
Vent, exhaust – CPVC or type BH (CPVC only for Nortec
GS 50-CS/NX)
Adaptor, exhaust (metric-to-imperial) – plastic (supplied)
5.8.2.3
3
4
Screw, sheetmetal (×4, supplied)
Outlet, humidifier exhaust
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 42 and Figure 20 on page 43. Adhere
to vent manufacturer's instructions.
–
Refer to Table 16 on page 41 for vent type and diameter of the exhaust vent for this type of installation.
The vent diameter must remain uniform over the entire run.
44 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
–
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 appliance 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).
5.8.3
–
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 42 or Figure 20 on page 43.
–
Category IV: Install condensate neutralizer, if required by local code.
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 requirements?
Proper clearances maintained between exhaust vent and combustible materials?
Exhaust vent diameter as listed in Table 16 on page 41, 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?
Exhaust vent secured properly with hangers or pipe straps?
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 45
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 page 20. In addition, refer to "Gas Connection Requirements" on page 46.
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
5
3
1
2
5
4
3
1
2
4
Figure 22: Gas Connection
1
2
Gas inlet NPT female (full-size unit)
Fitting, union (not supplied)
3
Valve, manual gas shutoff (not
supplied)
4
5
Trap, sediment (not supplied)
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: Where measuring of the gas firing rate of the humidifier is necessary, installing a gas meter (not
supplied) at the gas supply line is recommended.
Gas Connection Requirements
In addition to the requirements of the applicable national and local codes for gas connections, the following
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 humidifier. 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 47 .
46 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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 damage 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. 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?
Gas piping adequately supported?
Gas leakage test completed, and all leaks fixed?
De-pressurize gas supply line after leak test?
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 47
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 48.
Δp
φ
φ
max
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 distributor – 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 Controller Control Signals
Humidity Control with Internal PI
Controller Humidity Sensor Signals
Digital Inputs (via Modbus,
BACnet IP/MSTP slave)
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
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
BACnet IP
BACnet MSTP
Lonworks (Option)
BACnet MSTP BTL Certified (Option)
BACnet IP BTL Certified (Option)
Humidistat (24 V On/Off)
48 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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 50, and Figure 25
on page 51, as applicable) and the instructions for "External Connections" on page 52.
For connecting multiple Nortec GS humidifiers, refer to "Connecting Multiple Units Using Linkup" on page 57.
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 installation work has been completed, checked for correct workmanship, and the access panels are
installed and properly locked.
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.
Nortec GS
•
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.
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 49
5.11.2
Wiring Diagrams
5.11.2.1 Nortec GS - All Units
R
Y
FTBD
6
7
8
R
R
9
EXTERNAL
Unit ON Steam Service
INTERNAL
Bk
L
NO
COM
NO
COM
NC
NO
COM
NC
NO
COM
+10 VDC
5
PRIMARY VOLTAGE
CONNECTION
Error
Remote Fault PCB
On/Off
Switch
Transformer
6A
1
3
R 24V
Gr/Y
1 2
Tank
Temp
ON CTS
Stack
Hi-Limit
Tank
Hi-Limit
J1
Fill 2
S
S
Bk
R
Bk
J10
J1
float
J7
pwm1
Y
R
Gr
R
SIM
card
DRIVER
BOARD #1
pwm2
Bl
R
J3
JP4
R
O
JP8
pmp_fre
drn_blower
Bk
Bk
R
Bk
24Vout
ntc
J15
JP1
J12
Y
M
J13
J9
power
R
a/p
J2
R
RS485-1
ignition2
ignition1
J6
J5
R
W
R
J16
RS485-2
3
4
Br
M
Gr
Drain Valve
(optional)
RFB
Linkup
J10
JP11
ext
Gr/Y
7
Modbus
battery
fill 1,2,3
R
R
Bk
5 1 6 2
J6
JP7
digi inputs
J14
8
J3 J2
ACC
J1
J17
J11
R
Bl
Bk
J8
W
3 or 4-Burner
Units Only
Blower
Relay
INTEGRATED
CONTROL
BOARD
J12
R
Bk
Gr
J14
Gr
Bk
J16 J15
display
Drain
Pump
J17
comm port
J19
display
Bk
R
Bk
Gr
J18
LED
J22
R
Bk
Gr
USB
J23
U U
ethernet
J21
U U
W
Bk
Air Pressure
Switches
Note 1
Br
Gr/Y
R W Bl
Ignition
Module 1
Br
_
Spark
Igniter
For Nortec GS 50, 100, 200 models
see Note 1
2-Burner
Units Only
Gr/Y
+
L1
Gr PS Bk PWM
GND
W
HS out
R
PS +
1
R
R W Bl
Ignition
Module 2
Spark
Igniter
Blower 1
For Nortec GS 50, 100, 200 models
rectifier is required for
each gas valve.
Gas Valve2
GND
TH
V1
V2
GND
TH
V1
V2
Gr/Y
Br
Gas Valve1
Rectifier
Bk
R W Bl
M
Gr/Y
L2
GND
TH
V1
V2
Fill 1
Gr
W
Br
R
Bk
R
W
Bk
Gr
R
W
Bk
Gr
JP2
Bk R Br W Gr
Bl
Br
4
S1
Gr/Y
INTERNAL
2
Float Board
N
EXTERNAL
S
R
Gr/Y
Y
4
GND
3
Gr/Y
2
CH 1
GND
1
CH 2
24 VAC
Low voltage
terminal strip
CONTROL SIGNAL
CONNECTIONS
Security Loop
Legend:
Wire Colors
R - Red
W - White
Bk - Black
Bl - Blue
Br - Brown
O - Orange
Y - Yellow
Gr - Green
Gr/Y - Green & Yellow
Ignition
Module
Blower 2
L1
Gr PS Bk PWM
GND
W
HS out
R
PS +
1
2-Burner
Units Only
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
M
Gr/Y
L2
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
J6
JP7
JP8
J10
Jumper – for activating the termination resistor for Modbus or BACnet MSTP network.
Connector, Modbus (RS485 interface)
Jumper – for activating Modbus or BACnet MSTP communication via connector J6.
Termination, Linkup system
Connector, Linkup
50 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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
connections are carried over from Figure 24 on page 50.
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
Continued from
previous wiring diagram
A
D
1 2
S1
ON CTS
J10
J1
Fill 3
S
Fill 4
S
Bk
R
Bk
JP2
float
R
W
Bk
Gr
R
W
Bk
Gr
J7
pwm1
Blower 3
J8
DRIVER
BOARD #2
pwm2
Bl
L1
J3
digi inputs
Gr PS Bk PWM
GND
W
HS out
R
PS +
1
J17
W
fill 1,2,3
R
J14
J11
pmp_fre
drn_blower
ext
Gr/Y
J15
JP1
J12
power
a/p
J2
RS485-1
ignition1
J5
R
W
ignition2
J6
R
J16
Gr PS Bk PWM
GND
W
HS out
R
PS +
1
R
Bk
Gr
RS485-2
Br
Br
Gr/Y
L2
Gas Valve4
R W Bl
GND
TH
V1
V2
GND
TH
V1
V2
Ignition
Module 3
Gr/Y
4-Burner
Units Only
Gas Valve3
R W Bl
M
W
Bk
Gr/Y
L2
L1
24Vout
ntc
Gr/Y
Blower 4
J13
J9
Y
R
M
Spark
Igniter
Ignition
Module 4
Spark
Igniter
4-Burner
Units Only
Figure 25: Wiring Diagram - Nortec GS 450/600
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 51
5.11.3
External Connections
This section describes the different external control signal and power connections to the Nortec GS
humidifier.
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 50 and Figure 26.
IMPORTANT! Keep length of the 24V security loop (safety chain) as short as possible. The legnth
of the security loop depends on the cross section of the wires used.
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 external 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 contacts of the external On/Off devices.
6
24 VAC 1
2
GND
3
CH 1
4
CH 2
5
+10 VDC
6
7
FTBD
8
X-Vent
9
INTERNAL
GND
5
Æ
”p
K
4
Æ
max
3
2
1
EXTERNAL
Security Loop
Figure 26: External Security Loop Connections
1
2
3
4
5
6
Blower pack
Humidistat, On/Off
Humidistat, high limit
Switch, air proving
Interlock, ventilation
Jumper (installed if no devices connected to security loop)
5.11.3.2 Modulating Demand or Humidity/Limiter 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 50 and Figure 27. The permissible control signal input
values are shown in Table 17 on page 48.
52 Mounting and Installation Work
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
Do not connect multiple modulating signals to the same modulating input on the humidifier. If necessary,
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
communication 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".
2
GND
3
CH 1
4
CH 2
5
+10 VDC
6
7
FTBD
8
X-Vent
9
INTERNAL
GND
EXTERNAL
24 VAC 1
Security Loop
1
2
Figure 27: Modulating Demand or Humidity Signal Connections
1
2
Nortec GS
Modulating demand or humidity sensor signal
Modulating high limit demand or humidity sensor signal (additional, for Dual channels)
2596645_B_EN_2010_Nortec-GS_IM
Mounting and Installation Work 53
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 Figure 28. 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 VDC
6
7
FTBD
8
X-Vent
9
INTERNAL
GND
JP2
4
5
123
CH 1
CH 2
24V
3
EXTERNAL
2
GND
10V
24 VAC 1
Security Loop
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 Figure 29.
24 VAC
Security Loop
2
GND
3
CH 1
4
CH 2
5
+10 VDC
6
7
FTBD
8
X-Vent
9
INTERNAL
GND
EXTERNAL
24 VAC 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.
54 Mounting and Installation Work
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Nortec GS
•
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
warnings – 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.
1
2
1
2
3
4
F1
100mA
Analog Out
•
Service
Steam Unit ON
H1
1 2 3 4 5 6 7 8 9 10
Sensor Supply
Max. 60mA
Error
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). The installation of an external fused disconnect switch with 10A, slow acting
fuses in the main supply line are mandatory.
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
2
Nortec GS
External fused disconnect switch
Terminal block, power supply
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Mounting and Installation Work 55
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 representative 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.
RFB
ACC
JP4
Modbus
JP7
J3 J2
J1
SIM
card
JP4
J6
Modbus
J6
JP7
JP8
JP8
Linkup
J10
battery
JP11
J12
CONTROL
BOARD
J14
J16 J15
display
J17
comm port
display
J19
J18
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
Modbus
Signal Type
Recommended Cable
EIA-485, 2-wire
18-24 AWG shielded, twisted
pair, 120Ω *
Maximum Distance from
humidifier to BMS
ft (m)
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
Default
Adjustable Range
EIA-485
–
Transmission mode
RTU
–
Baud rate
9600
110, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 76800 or 115200
Data bits
8
–
Stop bits
1
–
Parity
Even
Odd, Even, None
Address
10
1-247
Time out
300 s
1-300 s
56 Mounting and Installation Work
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Nortec GS
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 connectors 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.
3
2
1
J6
J10 Linkup
U U
U U
1
2
3
4
5
6
7
X-Vent
9
+10 Vdc
GND
8
FTBD
7
CH 2
6
CH 1
5
24 VAC
Security loop
4
GND
3
+10 Vdc
GND
U U
2
X-Vent
1
FTBD
9
CH 2
8
GND
7
CH 1
6
24 VAC
Security loop
5
X-Vent
4
+10 Vdc
GND
3
FTBD
2
GND
1
CH 1
Internal
CH 2
24 VAC
Security loop
U U
U U
U U
JP8
8
9
External
All Inputs
4
4
Figure 33: Multi-Unit Linkup Connections
1
2
3
4
Nortec GS
Main unit (all control signals connected to main unit)
Extension unit #1 (no control signals to unit)
Extension unit #X (no control signals to unit)
Jumper (on all extension units)
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Mounting and Installation Work 57
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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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 65. Enter all notes and exceptions in the space provided on page 66. 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.
Serial Number:
Tag:
Model:
Capacity:
Customer/Job:
Voltage and Phase:
Representative:
Customer
Address:
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 13 on page 34 for water quality requirements. Note: Run the water for approximately five minutes before performing the tests:
Site Water Quality
Acceptable Range
Conductivity (μS/cm):
0-1500
Hardness gpg (ppm):
0-15 (256)
Silica (ppm):
0-14
Chlorides (ppm):
0-40
pH level:
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.
Nortec GS
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Commissioning 59
Site Water Supply, continued...
Water supply pressure meets requirement:
(Permissible range – 30-80 psig (207-550 kPa)
Select checkbox, or enter measurement, as appropriate).
Water supply pipe sized correctly:
(Minimum 1/2 in (13 mm) diameter required).
Water supply temperature meets requirement:
(Optimal range – 34-59 °F (1-15 °C); maximum 77 °F
(25 °C))
Select checkbox, or enter measurement, as appropriate).
Water supply piping material:
(Materials certified for drinking water systems permitted; 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 necessary).
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) diameter 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 bottom 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).
60 Commissioning
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Nortec GS
Site Gas Connection
Gas type:
(Natural gas or propane)
Gas supply pressure:
(Natural gas permissible range – 5-10 in H20 (1.252.49 kPa)
Propane permissible range – 9-14 in H20 (2.2423.49 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 8 on page 21 and Table 9 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 11 on page 27 for details).
Steam line piping material meets requirement:
(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 minimum 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 backpressure 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).
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Commissioning 61
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 requirement:
(Minimum 12 in (300 mm) below condensate Tee and
steam distributor required).
Condensate traps installed at all low
points, and horizontal-to-vertical transitions 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:
62 Commissioning
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Nortec GS
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 37 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 38 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 41 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 requirement:
(Refer to Table 16 on page 41 for exhaust vent size).
Exhaust vent diameter uniform over
entire length:
Slope of exhaust vent meets requirement:
(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:
Nortec GS
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Commissioning 63
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:
64 Commissioning
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Nortec GS
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 66.
Preliminary
Distribution System
Note: For commissioning the distribution system itself, refer
to the individual commissioning checklist for the distribution
system.
Pre-start-up checklist completed:
Gas leakage test inside unit completed:
SAM-e
Check for water leaks inside unit completed:
Mini-SAM-e
Condensate trap inside the unit primed:
Blower Pack
(Nortec GS CS/NX models only).
All access panels installed and fastened
securely:
ASD/BSD/CSD
Model:
Start-Up
Number of XSD units:
Shutoff valve in water supply line open:
Distance to obstruction:
(Minimum 1× absorption distance required from the
distributor to first obstruction (coil/bend ) downstream).
Fill tests completed successfully:
Distance to filter:
Ignition safety shutoff test completed
successfully:
(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).
Manual gas shutoff valve open:
On/Off switch set to the On position:
Software version:
Controls
Select the type of signal input connected
to the channels of the low voltage terminal strip #1:
(Enter setpoint value (if applicable) in the field below
the checkbox).
Demand Humidistat
On/Off Humidistat
Transducer
Digital Controls
Demand Humidistat
On/Off Humidistat
Transducer
Digital Controls
(modulating)
(modulating)
CH 1:
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:
(modulating)
(modulating)
(Enter setpoint value (if applicable) in the field below
the checkbox).
CH 1:
CH 2:
On/Off:
Control signal configuration in the software matches inputs connected to unit:
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
Commissioning 65
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:
Commissioning Date:
Company:
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.
66 Commissioning
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Nortec GS
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 11 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 13 on page 34?
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).
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Installation Checklist 67
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 installation 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 37 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 38, 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 requirements?
Proper clearances maintained between exhaust vent and combustible materials?
Exhaust vent diameter as listed in Table 16 on page 41, 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?
Exhaust 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?
68 Installation Checklist
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Nortec GS
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?
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?
Nortec GS
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Installation Checklist 69
8
Product Specifications
8.1
Weights
For the weights of the Nortec GS humidifier models refer to "Overall Dimensions and Weight" on page 21.
Dimensions
17.5in
443mm
6.8in
173mm
9.3in
236mm
3.9in
100mm
8.2
Exhaust Outlet *
Ø 2.4 in (60 mm)
Ø 3.1 in (80 mm)**
14.1in
359mm
Steam Outlet
Ø 1.75 in (45 mm)
Controls In
Ø 7/8 in (22 mm)
2.5in
63mm
O 7/8in
22mm
21.4in
542mm
25.2in
640mm
43.3in
1101mm
38.8in
985mm
Power In
Ø 7/8 in (22 mm)
2.7in
69mm
8.0in
202mm
Figure 35:
19.8in
503mm
8.8in
224mm
4.0in
101mm
Air Inlet
Ø 2 in (50 mm)
Ø 3 in (80 mm)**
Drain Outlet
Ø 1 in (25 mm)
6.1in
154mm
2.2in
56mm
4.3in
110mm
17.2in
438mm
5.1in
129mm
Gas Inlet
1/2 in NPT
3.7in
94mm
3.0in
76mm
Water Inlet
3/4 in BSPP
Condensate Drain
Ø 1/2 in (13 mm)
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
70 Product Specifications
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
12.8 in (324 mm)
9.8 in (248 mm)
3.3 in (83 mm)
21.4 in (544 mm)
1.9 in (49 mm)
Steam Outlet
Ø 3 in (75 mm)
25.0 in (635 mm)
19.6 in (497 mm)
8.3 in (212 mm)
Exhaust Outlet *
Ø 3 in (80 mm)
Air Inlet
Ø 3 in (80 mm)
Controls In
Ø 7/8 in (22 mm)
2.3 in (59 mm)
28.2 in (717 mm)
Gas Inlet
3/4 in NPT
29.0 in (738 mm)
30.9 in (786 mm)
30.8 in (783 mm)
62.7 in (1592 mm)
56.8 in (1442 mm)
49.7 in (1262 mm)
Drain Outlet
Ø 1 in (25 mm)
Condensate Drain
Ø 5/8 in (16 mm)
17.6 in (447 mm)
16.0 in (426 mm)
22.2 in (563 mm)
70.5 in (1792 mm)
Water Inlet
3/4 in BSPP
Figure 36: 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
Nortec GS
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Product Specifications 71
12.2 in (311 mm)
6.0 in (153 mm)
4.4 in (112 mm)
33.1 in (841 mm)
24.0 in (610 mm)
8.1 in (207 mm)
Exhaust Outlet *
Ø 4 in (100 mm)
21.5 in (547 mm)
Steam Outlet
Ø 3 in (75 mm)
Controls In
Ø 7/8 in (22 mm)
Air Inlet
Ø 4 in (100 mm)
38.1 in (968 mm)
29.0 in (738 mm)
Gas Inlet
1 in NPT
70.5 in (1792 mm)
1.9 in (49 mm)
2.4 in (61 mm)
40.4 in (1026 mm)
30.8 in (783 mm)
62.7 in (1592 mm)
56.8 in (1442 mm)
49.7 in (1262 mm)
Drain Outlet
Ø 1 in (25 mm)
Condensate Drain
Ø 5/8 in (16 mm)
17.6 in (447 mm)
22.2 in (563 mm)
426 mm (16.0 in)
Water Inlet
3/4 in BSPP
Figure 37: 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
72 Product Specifications
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
Air Inlet
Ø 6 in (150 mm)
11.4 in (290 mm)
8.0 in (203 mm)
4.4 in (112 mm)
Steam Outlet
Ø 4 in (100 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
2.4 in (61 mm)
30.8 in (783 mm)
17.6 in (447 mm)
62.7 in (1592 mm)
22.2 in (563 mm)
16.0 in (426 mm)
57.0 in (1448 mm)
56.8 in (1442 mm)
29.0 in (738 mm)
49.7 in (1262 mm)
54.4 in (1382 mm)
70.5 in (1792 mm)
1.7 in (44 mm)
21.5 in (547 mm)
49.4 in (1254 mm)
31.9 in (811 mm)
8.0 in (204 mm)
Condensate Drain
Ø 5/8 in (16 mm)
Drain Outlet
Ø 1 in (25 mm)
Figure 38: Nortec GS 450
Mounting stand supplied
* Metric to imperial size adaptor supplied with unit
Note: Water inlet BSPP to NPT adaptor supplied with unit
Nortec GS
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Product Specifications 73
Steam Outlet
Ø 4 in (100 mm)
Exhaust Outlet *
Ø 6 in (150 mm)
15.3 in (389 mm)
8.0 in (202 mm)
4.4 in (112 mm)
Air Inlet
Ø 6 in (150 mm)
Controls In
Ø 7/8 in (22 mm)
Gas Inlet
1 in NPT
2.4 in (61 mm)
30.8 in (783 mm)
62.7 in (1592 mm)
56.8 in (1442 mm)
447 mm (17.6 in)
22.2 in (563 mm)
426 mm (16.0 in)
66.9 in (1700 mm)
Water Inlet
3/4 in BSPP
29.0 in (738 mm)
49.7 in (1262 mm)
64.3 in (1632 mm)
70.5 in (1792 mm)
1.7 in (44 mm)
21.5 in (547 mm)
59.2 in (1504 mm)
33.9 in (861 mm)
8.0 in (204 mm)
Condensate Drain Drain Outlet
Ø 5/8 in (16 mm) Ø 1 in (25 mm)
Figure 39: Nortec GS 600
Mounting stand supplied.
* Metric to imperial size adaptor supplied with unit
Note: Water inlet BSPP to NPT adaptor supplied with unit
74 Product Specifications
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
9
Performance and Operating Data
9.1
Performance Data
Minimum Input (gross) BTUh (kW)
Maximum Input (gross) BTUh (kW)
Natural Gas
Propane
Natural Gas
Propane
GS 50-CS
GS 50-NX
GS 50-MT
12,400 (3.6)
13,000 (3.8)
13,000 (3.8)
–
–
62,000 (18.2)
65,000 (19.0)
62,000 (18.2)
–
–
Min./Max. Steam
Capacity
lb/h (kg/h)
10-50 (4.5-23)
10-50 (4.6-23)
10-50 (4.6-23)
GS 100-CS
GS 100-NX
GS 100-MT
24,800 (7.3)
26,000 (7.6)
24,800 (7.3)
–
–
124,000 (36.3)
120,000 (35.2)
124,000 (36.3)
–
–
20-100 (9-45)
20-100 (9-45)
20-100 (9-45)
186,000 (54.5)
–
–
30-150 (13.6-68)
30-150 (13.6-68)
30-150 (13.6-68)
248,000 (72.7)
–
–
20-200 (9-91)
20-200 (9-91)
20-200 (9-91)
372,000 (109.0)
–
–
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)
Nortec
Model
GS 150-CS
GS 150-NX
GS 150-MT
GS 200-CS
GS 200-NX
GS 200-MT
GS 300-CS
GS 300-NX
GS 300-MT
9.2
GS 450-CS
GS 450-NX
GS 450-MT
14 000 (4.1)
28 000 (8.2)
37,200 (10.9)
39,000 (11.4)
70 000 (20.5)
140 000 (41.0)
37,200 (10.9)
–
–
42 000 (12.3)
24,800 (7.3)
26,000 (7.6)
186,000 (54.5)
187,500 (55.0)
210 000 (61.5)
24,800 (7.3)
–
–
28 000 (8.2)
37,200 (10.9)
39,000 (11.4)
248,000 (72.7)
240,000 (70.3)
280 000 (82.1)
37,200 (10.9)
–
–
42 000 (12.3)
37,200 (10.9)
39,000 (11.4)
372,000 (109.0)
375,000 (109.9)
420 000 (123.1)
558,000 (163.5)
562,500 (164.9)
42 000 (12.3)
37,200 (10.9)
–
–
630 000 (184.6)
558,000 (163.5)
–
–
GS 600-CS
GS 600-NX
37,200 (10.9)
39,000 (11.4)
37,200 (10.9)
–
744,000 (218.0)
750,000 (219.8)
744,000 (218.0)
–
30-600 (13.6-272)
30-600 (13.6-272)
GS 600-MT
42 000 (12.3)
–
840 000 (246.2)
–
30-600 (13.6-272)
Operating Data
Control Signal Input Types:
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
135-10 kΩ ohmic humidity sensor
On/Off control
<2.5 VDC
Digital (via Modbus,
BACnet IP/MSTP
BACnet IP, BACnet MSTP, Modbus, LonWorks (Option), BACnet MSTP BTL-Certified (Option), BACnet IP BTL-Certified (Option)
Off, 2.5-20 VDC
On
Ambient Conditions:
Ambient temperature
41-104 °F (5-40 °C)
Relative humidity
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) for compact unit
10 in H2O (2.49 kPa) for full-size unit
Nortec GS
2596645_B_EN_2010_Nortec-GS_IM
PerformanceandOperatingData 75
Gas Operating Pressure:
Natural gas
4.5-10.0 in H2O (1.1-2.4 kPa)
Propane
9.0-13.0 in H2O (2.2-3.2 kPa)
Water Supply:
Water pressure (regulated)
30-80 psig (3.0-8.0 bar, 300-800 kPa)
Flow rate
2.6 gpm (10 L/min) for Nortec GS 50-300 , 5.3 gpm (20 L/min) for Nortec GS 450600
Water temperature
34-59 °F (1-15 °C) recommended; maximum 77 °F (25 °C)
Water quality
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.
Drain Water:
Drain water temperature
140 °F (60 °C) maximum (with drain water cooling), 212 °F (100 °C) (without
drain water cooling)
Drainage capacity
5.3 gpm (20 L/min)
Power:
Maximum current draw
15 A (slow acting fuse)
IP Rating:
IP20 for all units
76 Performance and Operating Data
2596645_B_EN_2010_Nortec-GS_IM
Nortec GS
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
damage 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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