Condair Nortec GS Series, Nortec GS50, Nortec GS300, Nortec GS 450, Nortec GS 100 Operation And Maintenance Manual
...Page 1
IMPORTANT! Read and save these instructions. This manual to be left with the equipment.
2583701_C_EN_1812_Nortec-GS_OM
NORTEC
OPERATION AND
MAINTENANCE MANUAL
Gas-fired Steam Humidifier
Nortec GS-Series
Humidication and Evaporative Cooling
Page 2
DANGER!
Fire or explosion hazard!
If the information in this manual is not followed
exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
DO NOT store or use gasoline or other ammable vapors and liquids in the vicinity of the humidier 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.
• 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 re
department.
Page 3
OPERATION AND
MAINTENANCE MANUAL
Gas-fired Steam Humidifier
Nortec GS-Series
2583701_C_EN_1812_Nortec-GS_OM
Page 4
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.
Loctite® is a registered mark of the Henkel Corporation.
Technical modication rights reserved.
Page 5
Contents
1 Introduction 7
1.1 Before You Start! 7
1.2 General 7
2 For Your Safety 9
3 Product Overview 13
3.1 General Description 13
3.2 Functional Description 15
4 Operator Interface 18
4.1 Controls 18
4.2 Control Software 19
4.2.1 Home Screen 19
4.2.2 General Navigational Elements 20
4.2.3 Operating Status 21
4.2.4 Maintenance and Fault Status 22
4.2.5 Help 22
4.2.6 System Information 23
4.2.7 Main Menu 27
4.2.7.1 Conguration Menu 28
4.2.7.2 Service Menu 42
4.2.7.3 Administrator Menu 47
4.3 Software Conguration 48
4.3.1 Conguring the Control Software 48
4.3.2 Conguring for Multi-Unit Operation 49
5 Operation 50
5.1 General 50
5.2 Operating Procedures 50
5.2.1 Filling the System 50
5.2.2 Ignition Safety Shuto Test 50
5.2.3 Starting the Humidier 51
5.2.4 Remote Monitoring 52
5.2.5 Inspections During Operation 52
5.2.6 Manually Initiate Tank Draining 53
5.2.7 Full Tank Blowdown 53
5.2.8 Shutting Down 54
5.2.9 Restarting After Shutdown 54
6 Maintenance 56
6.1 General 56
6.2 Mandatory Maintenance Schedule 57
6.3 List of Consumables 58
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
5Contents
Page 6
6.4 Management of Scale and Chloride Levels 58
6.4.1 Adjusting Blowdown Settings 59
6.5 Maintenance Procedures 60
6.5.1 Removal and Installation of Access Panels 60
6.5.2 Cleaning the Tank 61
6.5.3 Cleaning the Secondary Heat-exchanger 64
6.5.4 Cleaning the Float Chamber 65
6.5.5 Cleaning Hoses, Dual Fill Valves and Drain Pump 66
6.5.6 Cleaning the Burner Assembly 68
6.5.7 Replacing Backup Battery 70
6.5.8 Replacing Internal Fuse 71
6.5.9 Resetting Service Reminder 72
6.6 Installing Software Updates 72
7 Fault Isolation 74
7.1 General 74
7.2 Fault Indication 74
7.3 General Troubleshooting 75
7.4 Nortec GS Warning and Fault List 77
7.5 Resetting Fault Status 86
7.6 Driver Board Layout 87
7.7 Integrated Control Board Layout 87
8 Wiring Diagrams 88
9 Decommissioning 90
9.1 General 90
9.2 Removal from Service for Disposal or Long-term Storage 91
9.3 Disposal/Recycling 91
10 Product Specications 92
10.1 Performance Data 92
10.2 Operating Data 92
10.3 Size and Weight 93
A Appendix 94
A.1 Torque Values 94
A.1.1 Torque Sequences 95
6 Contents
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 7
1 Introduction
1.1 Before You Start!
Thank you for purchasing the Nortec GS humidier.
The Nortec GS humidier incorporates the latest technical advances and meets all recognized safety
standards. Never-the-less, improper use of the Nortec GS humidier may result in danger to the user
or third parties, and/or damage to property.
To ensure safe, proper and economical operation of the Nortec GS humidier, observe and comply with
all information and safety instructions contained in this manual, as well as all relevant documentation of
components of the installed humidication system. Comply with all local and regional regulations dealing
with gas, combustion air, ue gases, water, steam and electrical systems.
If you have additional questions, contact your Condair representative. They will be glad to assist you.
1.2 General
Limitations
The subject of this manual is the Nortec GS humidier. 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 operation and maintenance of the Nortec GS humidier, and is intended
for well trained personnel who are suitably qualied for their respective tasks.
Symbols Used in This Manual
CAUTION!
The catchword "CAUTION" in conjunction with the general caution symbol is used to provide safety
instructions that, if neglected, may cause damage and/or malfunction of the unit or damage to
property.
WARNING!
The catchword "WARNING" in conjunction with the general warning symbol is used to provide
safety instructions that, if neglected, may cause injury to personnel. Other specic warning symbols
may also be used in place of the general symbol.
Nortec GS
DANGER!
The catchword "DANGER" in conjunction with the general danger symbol is used to provide safety
instructions that, if neglected, may cause severe injury to personnel or even death. Other specic
danger symbols may also be used in place of the general symbol.
2583701_C_EN_1812_Nortec-GS_OM
7Introduction
Page 8
Other Related Publications
This Operation and Maintenance Manual is supplemented by other publications such as the Installation
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.
8 Introduction
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 9
2 For Your Safety
General
Every person who is tasked with the operation and maintenance of the Nortec GS humidier must read
and understand this manual before performing any work. 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 humidier must be observed and kept in a
readable state.
Personnel Qualications
All procedures described in this manual must only be performed by personnel who are adequately qualied, 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 qualied personnel authorized by Condair.
All personnel working with the Nortec GS humidier must be familiar with, and comply with the appropriate regulations on workplace safety and prevention of accidents.
Intended Use
The Nortec GS humidier is intended exclusively for air humidication using a Condair-approved steam
distributor within specied operating conditions (refer to "Operating Data" on page 86 for details). 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 humidier 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: Before performing any work inside the Nortec GS humidier shut down the humidier
properly and secure it against accidental power-up as described in "Shutting Down" on page 48.
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
9For Your Safety
Page 10
DANGER!
Risk of re or explosion!
The Nortec GS is a gas-red humidier. Improper installation, adjustment, alteration, service,
maintenance or use can cause carbon monoxide poisoning, explosion, re or other hazards
that can cause serious injury, death or property damage.
If over-heating occurs or if the gas fails to shut o: Shut o the gas supply at the manual gas
shuto valve before shutting o the electrical power supply.
DO NOT use this appliance if any part has been under water. Call a qualied 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 qualied 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 ammable vapors and liquids in the vicinity of the humidier
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 re department.
WARNING!
Risk of severe burns from contact with hot steam vapors!
The Nortec GS humidier produces hot steam vapors for humidication. Bare skin in contact with
hot steam vapors can result in severe burns.
Prevention: Never perform any work on the steam system (including the steam lines, steam distributors, etc.) while the humidier is operating. Shut down the Nortec GS steam humidier, as
described in "Shutting Down" on page 48 before xing any leaks in the steam system.
WARNING!
Risk of severe burns from contact with hot surfaces!
The water tank, steam line and exhaust system in the Nortec GS humidier get very hot during
operation. Bare skin in contact with hot surfaces can result in severe burns.
Prevention: Shut down the Nortec GS steam humidier as described in "Shutting Down" on page 48
and wait for the components to cool down before working on the steam system.
WARNING!
Risk of severe burns from contact with hot surfaces, steam or hot water!
The tank may contain steam or hot water at up to 212 °F (100 °C). Contact with the hot
surfaces, steam vapors or hot water can result in severe burns.
Prevention: Never open the tank until it has been fully drained, and the unit has cooled down
to a safe temperature. Never use the manual drain valve until the unit has cooled down. Use
the manual drain valve to verify that the tank is empty before removing the tank cover. Drain the
tank as described in "Manually Initiate Tank Draining" on page 47.
10 For Your Safety
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 11
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidier 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.
Preventing Unsafe Operation
If it is suspected that the Nortec GS steam humidier cannot be operated safely for any of the reasons
listed below, shut it down immediately as described in "Shutting Down" on page 48 and secure it against
accidental power-up.
• Humidier is damaged
• Electrical connections are loose or damaged
• Humidier is not operating properly
• Leaks in the steam system or gas supply
All personnel working with the Nortec GS humidier must immediately report to the customer any alternations to the humidier that may aect safety.
Modications to the Unit Prohibited
Modications are NOT permitted on the Nortec GS humidier without the express written consent of
Condair.
Always use original Condair replacement parts and accessories available through your Condair
representative.
The location of the various safety labels on the Nortec GS humidier is shown in Figure 1.
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
11For Your Safety
Page 12
5
1
2
3
Figure 1:
1 Label, gas safety warning
2 Label, keep cabinet closed warning
3 Label, installation guidelines
4 Label, general safety warning
5 Label, specication
Safety Labels
4
12 For Your Safety
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 13
3 Product Overview
3.1 General Description
The Nortec GS humidier provides clean steam humidication at an economical operating cost. It is
available in condensing high-eciency (CS) and ultra-low NOx condensing (NX) models, in capacities
ranging from 50 lb/h (23 kg/h) to 600 lb/h (260 kg/h). It is designed for humidication through the ducts
in an air handling unit using a steam distributor. The CS and NX models are classied as Category IV
appliances.
The Nortec GS humidier has an integrated control board which not only controls the humidier, but also
allows the humidier to be connected to a building automation system (BACnet, Lonworks, Modbus) or the
internet so it can be controlled and monitored remotely. In addition, up to four humidiers can be set up
in a "Main-Extension" conguration using Condair's Linkup system to satisfy large humidication needs.
The Nortec GS humidier comes in two dierent housing styles – compact and full-size. The compact
units are available in capacities of 50 lb/h (23 kg/h) and 100 lb/h (45 kg/h). The full-size units range in
capacities from 150 lb/h (65 kg/h) to 600 lb/h (260 kg/h).
Figure 2 shows the various Nortec GS series humidier models.
1 2
Figure 2:
1 GS 50/100 (compact housing)
2 GS 150 (full-size housing)
Nortec GS Series Humidier Models
3
3 GS 200/300 (full-size housing)
4 GS 450 (full-size housing)
4
5 GS 600 (full-size housing)
5
Table 1 lists the summary of major components in each Nortec GS model. Refer to Figure 3 on page 14.
Table 1: Nortec GS Components by Model
Quantity
Component
Primary heat-exchanger 1 1 2 3 4
Secondary heat-exchanger 1* 1* 2* 3* 4*
Water tank 1 1 1 1 1
Burner 1 1 2 3 4
Blower 1 1 2 3 4
Gas valve 1 1 2 3 4
Ignition control module 1 1 2 3 4
Spark-igniter and ame sensor 1 1 2 3 4
Fill box 1 1 1 2 2
Dual ll valve 1 1 1 2 2
* Secondary heat-exchanger on CS and NX models only.
Nortec GS
50/100
Nortec GS
150
Nortec GS
200/300
Nortec GS
450
Nortec GS
600
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
13Product Overview
Page 14
18
20
27
4
5
21
24
23
14
28
1
22
17
16
10
Figure 3:
Nortec GS Humidier Components (GS 100 shown)
13
11, 12
8
9
15
2
25
3
19
26
6
7
Note: Door, side and top panels removed for clarity.
1 Vent, exhaust
2 Hose, dual ll valve to ll box
3 Inlet, gas
4 Inlet, dual ll valve
5 Heat-exchanger, secondary
(CS/NX models only)
6 Port, drain
7 Port, condensate (CS/NX mod-
els only)
8 Trap, condensate (CS/NX mod-
els only)
9 Valve, manual drain
10 Panel, front
11 Hose, ll box to drain pump
12 Hose, ll box to water tank
13 Hose, oat chamber to water
tank
14 Fill box
15 Chamber, oat
16 Switch, On/Off
17 Display, touchscreen
18 Hose, ll box overow
19 Pump, drain
20 Cover, water tank
21 Tank, water
22 Spark-igniter and ame sensor
23 Combustion chamber and pri-
mary heat-exchanger
24 Module, ignition control
25 Assembly, blower
26 Inlet, air intake
27 Outlet, steam
28 Switch, air proving
3.2 Functional Description
Refer to Figure 3 on page 14. Figure 4 on page 16 shows the general system overview.
Combustion
The combustion system consists of a fully modulating forced-draft combustion air blower(s), a negative
pressure regulated gas valve(s), and a premix burner(s). On a call for humidity, the blower is energized
to purge the system. During this time the control software performs diagnostic checks of the safety
systems – the air proving switch (not shown) and the over-temperature switch, as well as the blowers. If
the air proving switch is open, the warning message "AP Open Warn" appears, and escalates to the fault
message "AP Open Fault" if three consecutive warnings occur. At the same time, if the over-temperature
switch is open, the fault message "Over-Temperature Fault" appears. In addition, if any of the blowers fail
to operate during this time, the fault message "Blower Not Operational" appears. When the functions of
the safety systems have been veried successfully, the gas valve(s) opens and the gas-air mixture is
pushed through the burner ports into the combustion chamber(s). The spark-igniter(s) is simultaneously
activated to ignite the gas-air mixture.
14 Product Overview
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 15
If a ame is not sensed by the ame sensor(s), the above sequence is repeated after 15 seconds. The
sequence is repeated upto a maximum of three times, after which the ignition control module(s) locks out
and the fault message "Ignition Fail" appears. If a ame is sensed by the ame sensor(s), the gas valve(s)
remains open and combustion continues. The gas valve(s) continues to maintain a constant air-to-gas
ratio independent of the blower speed or external conditions.
On the CS and NX models, the hot ue gases pass through the primary heat-exchanger then the secondary heat-exchanger, where it is cooled further before it exits through the exhaust vent. The heat recovered by the secondary heat-exchanger is used to warm up the feed water. On the standard-eciency
model, the hot ue gases pass through the primary heat-exchanger and exit through the exhaust vent.
Water Management
The Nortec GS humidier is equipped with a ll box and a oat chamber that monitors the water level
in the tank.
The combination ll box is connected to the tank and to the oat chamber. The ll box is supplied with
water from the water supply, and from the secondary heat exchanger in CS and NX models. A vacuum
break valve is used to prevent siphoning in the drain connection.
In CS and NX models, a secondary heat-exchanger promotes higher eciencies. This is achieved by
using the heat from the exhaust to pre-heat the cold ll water entering the ll box. Water from the ll box
then enters the bottom of the tank.
The oat chamber is connected to the top and bottom of the tank to monitor water levels with reference
to the low operational pressure inside the tank. The oat chamber and its control board consists of two
magnetic oats (one is a backup) that measure the water level. These levels correspond to 3 LEDs on
a display panel and are monitored by the control software.
Water Levels:
– L5 (yellow LED) – high water level
– L4 (green and yellow LED) – intermediate water level
– L3 (green LED) – middle water level
– L2 (green and red LED) – intermediate water level
– L1 (red LED) – low water level
On initial start-up, the dual ll valves ll the tank and the oat chamber. A start-up test monitors the water
level as the tank and oat chamber lls, and ensures proper functioning of the unit.
Note: A fault message “Float Level” may appear at any time. This indicates an invalid combination of
readings from the control software (for example, if L5 and L1 LEDs activate at the same time).
1. The water level reaches the backup oat, then the main oat.
2. As water lls the oat chamber and reaches the L1 level, the control software performs a test to
verify proper functioning of the dual ll valves and the drain pump.
a. Water enters the oat chamber via the tank. The ll valves will allow water to ll the tank and
raise the water level in the oat chamber to L5.
b. The drain pump energizes to lower the water level to just below L3.
Note: The water levels should appear in ascending then descending order; L1, L2, L3, L4, L5, L4,
L3. A fault message “Fill Check Fault” appears if the water level does not rise to level L5. A fault
message “Drain Check” appears if the water level does not drop below the level L3.
Nortec GS
3. When the test is complete, the dual ll valves activate and the water level should rise to level L3.
4. If a demand signal is present, the humidier begins the combustion sequence.
5. The drain pump and dual ll valves maintain the water level between levels L2 and L5.
If Float Check is enabled during steam production, the control software will activate the drain sequence
every 24 hours (adjustable to any time of day) to verify proper functioning of the oats, dual ll valves,
and the drain pump.
2583701_C_EN_1812_Nortec-GS_OM
15Product Overview
Page 16
1
2
3
4
5
10
6
7
15
14
16
13
9
11
12
9
8
Figure 4:
1 Vent, air intake – connected to
exterior (optional connection)
2 Steam line (rigid pipe)
3 Vent, exhaust
4 Valve, manual gas shutoff
5 Supply line, gas
6 Distributor, steam (SAM-e)
7 Duct
16 Product Overview
Nortec GS General System Overview
8 Drain line, condensate (with
trap)
9 Funnel (with trap)
10 Filter, Water (optional, but
recommended)
11 Valve, water shutoff
12 Supply line, water
13 Cables, power and control
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
signal
14 Drain line
15 Drain line, condensate (CS and
NX models only)
16 Valve, backow preventer (dou-
ble check)
Page 17
4 Operator Interface
4.1 Controls
The operator interface in the Nortec GS humidier is located on the front of the unit – refer to Figure 5. It
consists of a touchscreen display with a LED status indicator, and an On/O switch. Refer to Table 2 for
a description of each of these elements.
1
2
3
Figure 5:
1 Display, touchscreen
2 Status indicator, LED
3 Switch, On/Off
Nortec GS Operator Interface
DANGER!
Risk of electric shock!
The control cabinet in the Nortec GS humidier has live voltage. Turning o the unit at the
On/O switch does not shut o power to the control cabinet, which still has live voltage.
Touching live parts may cause severe injury or even death.
Prevention: Shut down the humidier properly as described in "Shutting Down" on page 48 before ac-
cessing the control cabinet in the humidier.
Table 2: Operator Interface Element Functions
Element Description
Touchscreen display Allows the user to monitor or control the Nortec GS humidier. Refer to "Control Software"
LED status indicator The status LED is a multi-function LED, which lights up in dierent colors depending on the
On/O switch Allows the user to turn the Nortec GS humidier on or o.
on page 18 for details of the software interface.
operating status of the humidier.
Green: indicates that the Nortec GS humidier is operating normally and humidifying.
Flashing Green: indicates that the Nortec GS humidier is in standby mode.
Yellow: indicates that a warning condition is present, or the humidier is due for maintenance.
Red: indicates that a fault condition is present, and humidication is stopped.
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
17Operator Interface
Page 18
4.2 Control Software
The control software runs in the background and controls all the functions of the Nortec GS humidier.
The user interacts with the control software through the screens on the touchscreen display. Details of
the screens are described in the following sections.
Note: The screens shown in this chapter are for representation purposes only, and may dier from what
is displayed on your humidier.
4.2.1 Home Screen
When the Nortec GS humidier is turned on, it starts initializing and performs system checks. When
initialization and system checks are completed successfully, it goes into the normal operating mode.
The Home screen then appears on the touchscreen display.
The major elements of the Home screen are shown in Figure 6.
10
9
5
8
Figure 6:
1 Date and time, current
2 Operating status message – refer to "Operating Status" on page 19 for details.
3 Humidity control information – shows the type of control signal and the steam output requested.
4 Service/Warning/Fault status message – refer to "Maintenance and Fault Status" on page 20 for details.
5 Button, <Help> – access technical support help information. Refer to "Help" on page 20 for details.
6 Button, <Drain> – manually initiate the drain function. Refer to "Manually Initiate Tank Draining" on page 47 for details.
7 Button, <About> – access the system information. Refer to "System Information" on page 20 for details.
8 Button, <Main Menu> – access the Main menu. Refer to "Main Menu" on page 24 for details.
9 Visual indication, current steam output level
10 Model number, Condair humidier
Home Screen Elements
6
7
1
2
3
4
4.2.2 General Navigational Elements
Figure 7 show the general navigational elements/features of the screens on the touchscreen display.
18 Operator Interface
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 19
9
2
4
1
3
8
5
6
14
Figure 7:
General Navigational Elements and Features
1 Button, <Return> – cancel and
return to previous menu level.
2 Current menu/sub-menu
selection
3 Button, <Previous Tab> –
return to the previous tab in
the current menu/sub-menu
selection.
4 Button, <Next Tab> – continue/
go to the current/next tab in the
menu/sub-menu selection.
7
11
12
13
5 Tab, current
6 Icon, additional information –
access additional information.
7 Button, <Move Cursor Left> –
move the cursor to the left on
the display.
8 Button, <Delete> – delete the
entry.
9 Button, <Move Cursor Right>
– move the cursor to the right
on the display.
10
10 Keypad, alpha-numeric
11 Button, <Increase> – increase
the setpoint value.
12 Button, <Decrease> – de-
crease the setpoint value.
13 Button, <Help> – access con-
text-sensitive help.
14 Button, <Conrm> – conrm
the change/selection. Changes
will not be stored if this button
is not pressed.
4.2.3 Operating Status
The operating status area of the Home screen (refer to Figure 6 on page 18) shows the current operating
status message and an associated status icon. The messages are described in Table 3, and the status
icons are described in Table 4.
Table 3: Operating Status Descriptions
Message Description
Humidifying The humidier is generating steam.
Stopped The humidier is stopped because a condition with a "Fault" status is active.
Disabled The Nortec GS humidier is disabled by the BMS (building management system).
Safety Loop One or more contacts in the external security loop is open, so the humidier has stopped producing steam.
Idle The humidier is in standby mode (no humidity demand).
Idle Drain The humidier has been in standby mode for a number of hours. The Idle Drain Time has elapsed and the Idle Drain
Idle Empty Indicates that the tank is empty during idle.
Keep Warm The humidier is in standby mode, and the Keep Warm function is activated.
Filling Indicates that the tank is being lled.
Fill check The humidier is performing a ll check.
Drain check The humidier is performing a drain check.
Draining The humidier is draining.
Warning A condition with a "Warning" status is active. In addition, the message "Warning" is shown in the maintenance/fault
Fault A condition with a "Fault" status is active. The humidier is stopped. In addition, the message "Fault" is shown in
function is active – the humidier is being drained. The humidier will automatically rell when it receives a valid
humidity demand signal.
status area of the Home screen. The humidier will continue to produce steam when there is a demand (unless the
warning relates to a control signal).
the maintenance/fault status area of the Home screen.
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
19Operator Interface
Page 20
Table 4: Status Icon Descriptions
Icon Description
The icon appears to the left of the operating status message or the maintenance/fault message when the system is working normally.
The icon appears to the left of the maintenance/fault status message when a maintenance
reminder or a condition with a "Warning" status is active. The humidier will continue to produce steam when there is a demand (unless the warning relates to a control signal).
The icon shown appears to the left of the maintenance/fault status message when a condition with a "Fault" status is active. The humidier stops producing steam.
4.2.4 Maintenance and Fault Status
The Service/Warning/Fault status area of the Home screen (refer to Figure 6 on page 18) shows maintenance reminders, warning and fault status messages along with associated status icons. This eld also
allows access to the "Service Menu". When a maintenance reminder, warning or fault status message is
active, the list of current faults/warnings can be accessed directly from this eld to view additional details.
The general maintenance reminders and alarm messages displayed in this area are described in Table 5,
and the status icons are described in Table 4. Refer to "Nortec GS Warning and Fault List" on page 71 for a
detailed list of warning and fault messages.
Table 5: Maintenance/Fault Status Descriptions
Message Description
Service info No faults conditions present.
Maint. Warning This maintenance reminder appears when the Service Interval time set in the control software
Warning A condition with a "Warning" status is active. Depending on the warning condition, the
Fault A condition with a "Fault" status is active. Depending on the fault condition, the Nortec GS
4.2.5 Help
Touch the <Help> button on the Home screen (refer to Figure 6 on page 18) to view your local technical
support help details.
has elapsed. The unit can continue to operate for another 200 hours, after which a corresponding fault message appears and the unit stops operating.
Perform the required scheduled maintenance, then reset the service reminder in the Service
menu. Refer to "Maintenance Procedures" on page 54.
Nortec GS humidier will continue to produce steam when there is a demand (unless the
warning relates to a control signal).
In addition, the status LED turns yellow in color.
humidier will not produce steam until the fault condition is cleared.
In addition, the status LED turns red in color.
4.2.6 System Information
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Select the <About> button on the Home screen (refer to Figure 6 on page 18) to view the system information for your Nortec GS. The tab structure for this selection is shown below.
About > "General Tab" on page 21
"Timer Tab" on page 21
"Operational Status Tab" on page 21
"Control Status Tab" on page 22
"Features Tab" on page 22
"Networking Settings Tab" on page 23
General Tab
– Serial Number: shows the serial number, which is also shown on
the specication label.
– Humidier Model: shows the model number, which is also shown
on the specication label (on the right side of the humidier).
– Humidier Capacity: shows the current setting of the humidier's
steam output capacity.
– Software Version: shows the current version of the control soft-
ware. Select the eld to update the control software – refer to
"Software Settings Tab" on page 41 for details.
Timer Tab
– Driver Board A/B Version: shows the current version of the driver
board.
– Graph: shows you a trend data.
– Export Trend Data: sends the data to a connected USB drive.
– On/O Timers: allow you to enable or disable the On/O timer
function to permit disabling of steam production during specied
days and times.
Conguration >Features > Operation > On/O Timers
– Capacity Timers: allow you to enable or disable the timer func-
tion, and congure up to eight dierent events with dierent output
capacities. The event timers for the capacity set in
Conguration > Features > Operation > Capacity Timers
Nortec GS
Operational Status Tab
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Control Status Tab
– Output: shows the current actual steam output level of the
humidier.
– Operating Hours: shows the current accumulated number of hours
the humidier has been producing steam since startup.
– Weighted Hours: shows the number of operating hours on the unit
weighted x demand % output.
– Average Demand: shows the time-averaged demand on the
system.
– Service Hours: shows the service interval.
– Est(imated) Days to Service: shows the number of days before
the unit is due for service.
– Demand: shows the calculated demand for the unit as a percentage
of its maximum capacity.
– Linkup: shows the humidier's 'position' in the linkup chain. Select
to set the humidier
– Safety Loop: shows the current status of the On/O devices in the
safety loop. If the loop is open, the unit will not produce steam.
– Manual Capacity: shows the capacity limitation value as a percent-
age of the maximum capacity of the unit. Select the eld to set a
xed maximum output capacity.
– Channel 1: shows the input signal for Channel 1. If congured for
demand control, it represents the demand. If congured for RH(P/
PI), it represents sensed humidity. Refer to Control Mode.
– Setpoint Channel 1: shows the current xed humidity setpoint
value for the unit. Select the eld to adjust the setpoint value. Refer
to "PI Control Parameters Tab" on page 29 for more details.
Note:
This eld appears only if Control Mode is set to "RH P" or "RH PI".
– Channel 2: shows the input signal for Channel 2. If congured for
demand control, it represents the demand. If congured for RH(P/
PI), it represents sensed humidity.
Note: This eld appears only if the Control Channels is set to "Dual".
Features Tab
22 Operator Interface
– Setpoint Channel 2: shows the high limit setpoint value for the unit.
Select the eld to adjust the value.
Note: This eld appears only if Control Mode is set to "RH P" or "RH
PI", and Control Channels is set to "Dual".
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– Blowdown Rate: shows the rate at which the tank is partially
drained, as a percentage of actual steam production. Refer to the
"Water Management Tab" on page 25 for more details.
– Drain Cool: shows the conguration setting of the drain cool function.
Select the eld to choose a dierent mode – "O", "On" or "Smart".
Refer to the "Water Management Tab" on page 25 for more details.
– Float Check: shows the conguration setting of the oat check func-
tion. Select the eld to enable or disable the function. Refer to the
"Operation Tab" on page 27 for more details.
– Float Check Time: allows you to see and set the time of day when
the oat check function will occur.
– FTBD (Full Tank Blowdown): shows the conguration setting of
the full tank blowdown function. Select the eld to enable or disable
the function. Refer to the "Water Management Tab" on page 25 for more
details.
– FTBD Interval: shows how often a full tank blowdown will occur.
Refer to the "Water Management Tab" on page 25 for more details.
– FTBD Time: shows the time of day when a full tank blowdown will oc-
cur. Refer to the "Water Management Tab" on page 25 for more details.
– Time Proportioning: shows the conguration setting of the time pro-
portioning function. Select the eld to enable or disable the function.
Refer to the "Operation Tab" on page 27 for more details.
Networking Settings Tab
– Idle Mode: allows you to set the idle function of the humidier when it
is in standby mode.
– Idle Drain Time: allows you to set the time duration the humidier
stays in standby mode without a demand, after which the humidier
carries out the function specied in Idle Mode.
– Short Cycle: allows you to enable or disable a timer function that
delays steam production until the already delivered humidity can
stabilize in the conditioned environment. This feature prevents the
humidier from ooding the environment with excess humidity from
false humidity readings.
– Short Cycle Time: allows you to set the time duration that the unit
waits in standby mode before responding to a new demand signal.
– Modbus: shows if Modbus communication is enabled.
– Modbus Address: shows the Modbus address.
– BACnet MSTP MAC: shows the MAC address assigned to the
humidier.
– IP Address: shows the IP address assigned to the humidier.
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4.2.7 Main Menu
Select the <Main Menu> button on the Home screen to view the Main menu. The Main menu and its
contents are password-protected. Refer to Figure 8. Enter the password "0335" to access the Main menu.
3350
Figure 8:
Main Menu Access
The structure of the Main menu and its sub-menus is shown in Table 6.
Table 6: Main Menu Structure
"Main Menu" on
page 24 >
"Conguration Menu" on
page 24 >
"Service Menu" on
page 38
"Setpoint" on page 40
"Administrator Menu" on
page 40 >
"Features Menu" on
page 25 >
"Control Settings Menu"
on page 28 >
"General Menu" on
page 33 >
"Communications Menu"
on page 34 >
"Humidier Service Tab" on page 38
"General Service Tab" on page 38
"Fault/Service History Tab" on page 39
"Diagnostics Tab" on
page 39 >
"Password Setting Tab" on page 41
"Software Updates Tab" on page 41
"Software Settings Tab" on page 41
"Water Management Tab" on page 25
"Operation Tab" on page 27
"Basic Tab" on page 28
"PI Control Parameters Tab" on page 29
"RH Alerts Tab" on page 30
"Multi-Unit Operation Tab" on page 31
"Basic Tab" on page 33
"Time Date Tab" on page 33
"Remote Enable Tab" on page 34
"IP Parameters Tab" on page 34
"BMS Timeout Tab" on page 35
"Modbus Parameters Tab" on page 35
"BACnet Parameters Tab" on page 35
"Nortec Online Tab" on page 37
"Remote Fault Board" on page 37
Input Diagnostics
Output Diagnostics
Relay Diagnostics
4.2.7.1 Conguration Menu
The Conguration menu lets you congure the operation of the Nortec GS humidier. The menu and
sub-menu items are discussed below. Refer to Table 6 on page 24 for the menu structure.
24 Operator Interface
>
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Features Menu
Each tab under the Features menu is discussed below.
Water Management Tab
– Idle Mode: allows you to set the idle function of the humidier
when it is in standby mode.
Options: Idle Only – the humidier waits indenitely
Idle Drain – the tank is drained after Idle Drain
Keep Warm – the water in the tank is kept
Factory setting: Idle Drain
– Idle Drain Time: allows you to set the time duration the humidier
stays in standby mode without a demand, after which the humidier carries out the function specied in Idle Mode 2.
Setting range: 1-100 hours
Factory setting: 72 hours
– Float Check: allows you to enable or disable the oat check func-
tion. When enabled, the humidier performs a oat check at startup and every 24 hours (without interrupting steam production if
humidier is operating, or in standby mode), to verify that the oat
system is working properly. .
Options: On or O
Factory setting: On
for a demand signal.
Time elapses without demand.
warm while in standby mode.
– Float Check Time: allows you to set the time of day when the oat
check function will occur.
– Blowdown Rate: allows you to set the rate (as a percentage of
actual steam production) at which the tank is drained. Refer to
"Adjusting Blowdown Settings" on page 53 for additional details.
Setting range: 1-50%
Factory setting: 25%
– Drain Cool:
function that is used to cool down the drain water before it is discharged.
Options: On – enable the function.
O – disable the function.
Smart – drain water cooling happens only if
Factory setting: On
– DWC (Drain Water Cooling) Source: allows you to select the
water source used in drain water cooling.
Options: Internal – use the ll valve in the unit to sup-
allows you to enable or disable the drain water cooling
the tank is hot.
ply water for drain water cooling setting:
Internal
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– FTBD (Full Tank Blowdown): allows you to enable or disable the
full tank blowdown function. Depending on the water quality, this
function can be used to extend operational life and service intervals by reducing mineral build-up in the tank. When enabled, the
FTBD function performs a full drain of the tank when the weighted
runtime hours exceed the FTBD Interval. When blowdown is completed, the tank is relled and the unit resumes normal operation.
Options: On or O
Factory setting: On
– FTBD Time: allows you to set the time of day when a full tank
blowdown will occur.
– FTBD Interval: allows you to set the frequency of full tank blow-
downs in weighted hours (equivalent to a unit operating at 100%
output). Refer to "Adjusting Blowdown Settings" on page 53 for addi-
tional details.
Setting range: 1-200 hr
Factory setting: 100 hr
– Fill Correction 1: allows you to adjust all the parameters for the
high volume ll valve(s) to compensate for valve tolerances, as
well as site-specic conditions.
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range: 0.1-10.0
Factory setting: 1.0
– Fill Correction 2: allows you to adjust all the parameters for the
low volume ll valve(s) to compensate for valve tolerances, as well
as site-specic conditions.
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range: 0.1-10.0
Factory setting: 1.0
– Drain Correction: allows you to adjust all the parameters used for
draining the tank and blowdowns to compensate for drain pump
ow rates and site-specic conditions.
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range: 0.5-1.5
Factory setting: 1.0
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Operation Tab
– Manual Capacity: allows you to set the capacity limitation value
as a percentage of the maximum capacity of the unit.
Setting range: 20-100 %
Factory setting: 100 %
– Capacity Timers: Present status of the timer controlled capacity
limitation ("On": timer controlled capacity limitation activated, "O":
timer controlled capacity limitation deactivated).
– On/O Timers: Present status of the On/O timer function ("On":
On/O timer function activated, "O": On/O timer function deactivated). A warning message is displayed whenever the humidier is
turned o via the On/O timer.
– Time Proportioning: allows you to enable or disable the time pro-
portioning function, which allows the controller to operate the burners on a time-proportional sequence when the system demand is
below the minimum output of a single burner.
Options: On or O
Factory setting: O
– Short Cycle: allows you to enable or disable a timer function that
delays steam production until the already delivered humidity can
stabilize in the conditioned environment. This feature prevents the
humidier from ooding the environment with excess humidity from
false humidity readings.
Options:
O – disables the timer function.
Factory setting: O
On – the humidier remains in standby mode
until the timer elapses even if there is a new
demand signal.
– Short Cycle Time: allows you to set the time duration that the unit
waits in standby mode before responding to a new demand signal.
Setting range: 0-300 s
Factory setting: 60 s
– Exhaust in Duct:
terminal strip is monitored at all times for a 24V input. This input
behaves similarly to the security loop but is used for the on/o controls required for the Exhaust in Duct feature. At any time, if the on/
o controls open and the 24V is lost on the terminal 9 input, a E153
Exhaust in Duct Fault is generated and humidication will stop immediately. A power cycle reset is required to clear the fault. In addition
to setting the feature in the software, a jumper selection needs to be
made on the driver board. JP1 needs to be moved to position 2-3.
Options: On or O
O – When set to OFF, all of the above is
– Factory setting: O
When set to ON, terminal 9 on the Low Voltage
ignored. JP1 should be in position 1-2..
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Control Settings Menu
Control Settings menu is discussed below. Refer to the structure of the tabs in Table 6 on page 24.
Basic Tab
– Source: allows you to select the source of incoming control/hu-
midity signal to the humidier.
Options: Analog – signals from analog sensors or
humidistats connected to the humidier's
low voltage terminal block.
Modbus – signals from BMS via the Modbus
communication protocol.
BACnet/IP – signals from the BMS via the
BACnet/IP communication protocol.
BACnet/MSTP – signals from the BMS via
the BACnet/MSTP communication protocol.
LonWorks – signals from the BMS via the
LonWorks communication protocol.
Factory setting: Analog
– Control Channels: select one or two control signals to control the
humidier.
Options: Single – single control signal.
Dual – two control signals (typically a con-
trol, plus a high limit signal).
Factory setting: Single
– Control Mode CH 1: select the general control mode for the
incoming control signal.
Options: Demand – signal from an external controller.
RH P –
to interpret the sensed humidity into a demand.
RH PI – uses the internal (proportional-
integral) controller to interpret the sensed
humidity into a demand.
On/O – control signal is from an external
On/O humidistat.
Factory setting: Demand
– Limiter Mode CH2: only appears when control mode is set to
double. Allows you to set the limiter signal type.
– Signal Type Channel 1:
signal. Note: This setting is ignored if signal Source is not set to "Analog".
Options: 0-5V, 1-5V, 0-10V, 2-10V, 0-20V, 0-16V, 3.2-
16V, 0-20mA, 4-20mA
Factory setting: 0-10V
– Signal Type Channel 2:
signal. Note: This setting is ignored if signal Source is not set to "Analog".
Channel 2 applies only when Control Channels is set to "Dual".
Options: 0-5V, 1-5V, 0-10V, 2-10V, 0-20V, 0-16V, 3.2-
16V, 0-20mA, 4-20mA
Factory setting: 0-10V
uses the internal (proportional) controller
select the signal type of the incoming control
select the signal type for the high limit
28 Operator Interface
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PI Control Parameters Tab
Note: This tab appears only if Control Mode is set to "RH P" or "RH PI".
– Setpoint Channel 1: allows you to set the humidier to operate at
a xed humidity setpoint value.
Setting range: 0-95% RH
Factory setting: 40%
– Band Channel 1/2: allows you to set the proportional range for
the internal P/PI controller as a percentage of relative humidity
(% RH) within which the humidier will modulate between 0 and
100% output. Note: Band channel 2 setting appears only if Control
Channels is set to "Dual".
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range: 6-65%
Factory setting: 15%
– ITime Channel 1: allows you to set the integral time for error cor-
rections by the internal P/PI controller.
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range: 1-60 minutes
Factory setting: 5 minutes
– Setpoint Channel 2: allows you to set the high limit setpoint
value. Note: This setting appears only if Control Channels is set to
"Dual".
Setting range: 0-95% RH
Factory setting: 80%
– Damp Channel 2: allows you to set the time duration after which
the high limit setpoint value takes control of the demand signal.
Note: This setting appears only if Control Channels is set to "Dual".
Setting range: 1-60 seconds
Factory setting: 5 seconds
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RH Alerts Tab
Note: This tab appears only if Control Mode is set to "RH P" or "RH PI".
– RH Alerts: allows you to enable or disable the alert function that
warns if sensed humidity is too high or too low.
Options: On – enables the function.
O – disables the function.
Factory setting: O
Note: The following settings are only available if the RH Alerts function is enabled.
– RH High: allows you to set the upper limit value of the humidity
sensor signal. The RH High warning message is triggered when the
signal value exceeds this limit.
Setting range: 20-95%
Factory setting: 75%
– RH Low: allows you to set the lower limit value of the humidity
sensor signal. The RH Low warning message is triggered when the
signal value drops below this limit.
Setting range: 20-95%
Factory setting: 20%
– Sensor Min: allows you to set the minimum signal value of the
humidity sensor. If the signal value drops below this setting, the
sensor is assumed to be damaged or disconnected. The RH Signal
warning message is triggered when the signal value drops below
this limit, and humidication stops.
Setting range: 1-10%
Factory setting: 5%
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Multi-Unit Operation Tab
– Linkup: allows you to enable or disable the Linkup function, which
allows up to six humidier to connect and operate together from
a single set of control signals. It also allows you to designate the
humidier to operate as a "Main" or "Extension" unit.
Options: Main – designated as the main (master) unit.
Ext 1-5 – designated as the rst extension
unit, second, third, fourth, or fth extension
unit.
O – disables Linkup. The humidier per-
forms as a single unit.
Factory setting: O
Note: The remaining settings in this tab and the next are only available on the main unit when the Linkup function is enabled.
– Linkup Units: allows you to set the number of humidiers in the
Linkup chain.
Setting range: 1-6
Factory setting: 1
– Linkup Type: allows you to select the mode of operation of the
humidier in the Linkup chain.
Options: Parallel – the humidity demand (from a single
zone) is distributed evenly on all humidiers
in the Linkup chain.
Series – the main unit operates to its maxi-
mum capacity, and as demand increases the
extension units generate steam in sequential
order. Each unit scales steam production in
small increments. Series setting maximizes
turndown.
Factory setting: Series
– Sequence Rotation: allows you to enable or disable the function
that manages the starting order to balance operating hours of all
linked humidiers. Note: This setting is available only if Linkup Type
is set to "Series".
Options: On or O.
Factory setting: On
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Multi-Unit Operation Tab, continued...
– Sequence Interval: allows you to set the time interval used by
the control software to establish a new operating sequence to
balance operating hours of linked humidiers. Note: This setting is available only if Sequence Rotation is enabled.
Setting range: 24-1000 hours
Factory setting: 24 hours
– Linkup Timeout: allows you to set the maximum time limit
that the units in the Linkup chain can operate without communication to each other before a timeout warning message is
generated.
Setting range: 60-120 seconds
Factory setting: 60 seconds
– Zero Out: shows the percentage value of the system demand
signal at which the unit is switched on.
Setting range: 0-100%
Factory setting: 0%
Note: This setting can only be modied if more than one unit is
physically connected to the Linkup chain.
– Full Out: shows the percentage value of the system demand
signal at which the unit achieves 100% demand.
Setting range: 0-100%
Factory setting: 100%
Note: This setting can only be modied if more than one unit is
physically connected to the Linkup chain.
Refer to "Features Tab" on page 22 for setup procedure.
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General Menu
Each tab under the General menu is discussed below. Refer to Table 6 on page 24 for the menu structure.
Basic Tab
– Date: allows you to set the current date in MM/DD/YYYY or DD/
MM/YYYY format depending on the Date Format setting.
– Time: allows you to set the current time in 12-hour or 24-hour for-
mat depending on the Clock Format setting.
– Language: allows you to select the language displayed on the
touchscreen display.
Options: English, German, French, Italian, Spanish,
Dutch, Danish, Finnish, Swedish, Polish,
Czech, Hungarian, Russian, Japanese or
Chinese
– Units: allows you to select the units of measurement.
Options: Imperial or Metric
– Contrast: allows you to set the contrast level of the touchscreen
display.
Setting range: 1 (low) - 31 (high)
Factory setting: 8
Time Date Tab
– Brightness: allows you to set the brightness level of the touch-
screen display.
Setting range: 1 (black) - 100 (white)
Factory setting: 52
– LED Brightness: allows you to adjust the brightness of the LEDs.
Setting Range: 1-100
Factory setting: 50
– Date Format: allows you to select the date format.
Options: MM/DD/YY or DD/MM/YY
Factory setting: MM/DD/YY
– Clock Format: allows you to select the time format.
Options: 12 hour or 24 hour
Factory setting: 12 hour
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Communications Menu
Each tab under the Communications menu is discussed below. Refer to Table 6 on page 24 for the menu
structure.
Remote Enable Tab
– Allow Remote Disable: allows you select whether steam produc-
tion by the humidier can be remotely disabled via the BMS.
Options: Yes – remote disable permitted.
No – remote disable not permitted.
Factory setting: Yes
IP Parameters Tab
The following settings are used only for communications via the integrated BACnet IP protocol and web pages.
– IP Type: allows you to select how the IP address settings are
assigned.
Options: DHCP – automatically acquire network ad-
dress settings. Note: After ve unsuccessful
attempts to acquire the address, the system
will revert to Fixed assignment.
Fixed – manually congure the network ad-
dress and settings.
Factory setting: DHCP
– IP Address: allows you to manually set the IP address. Set the IP
address only if IP Type is set to "Fixed".
– Subnet Mask: allows you to manually set the IP subnet mask for
the IP network. Note: Set the subnet mask only if IP Type is set to
"Fixed".
– Default Gateway: allows you to manually set the default gateway
for the IP network. Note: Set the default gateway only if IP Type is
set to "Fixed".
– Primary DNS: allows you to manually set the primary DNS
(domain name server) for the IP address. Note: Set the primary
DNS only if IP Type is set to "Fixed".
34 Operator Interface
– Secondary DNS: allows you to manually set the secondary
DNS (domain name server) for the IP address. Note: Set the
secondary DNS only if IP Type is set to "Fixed"
– MAC Address: displays the MAC (media access control) ad-
dress for the Nortec GS humidier.
– Host Name: displays the host name for the Nortec GS
humidier.
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BMS Timeout Tab
Modbus Parameters Tab
– BMS Timeout: allows you to set the maximum time the humidier
will wait without any communications from the BMS network before
a timeout warning is generated.
Setting range: 1-300 seconds
Factory setting: 300 seconds
– Modbus: allows you to enable or disable the Modbus communica-
tions protocol. Enabling or disabling Modbus always requires a
power cycle of the unit.
Options: On or O
Factory setting: On
The following settings appear only if Modbus is enabled.
BACnet Parameters Tab
– Modbus Address: allows you to set the Modbus address of the
humidier on the network.
Setting range: 1-247
Factory setting: 10
– Parity: allows you to set the parity bit for the data transfer.
Options: None, Even or Odd
Factory setting: Even
– Baudrate: allows you to set the baudrate for the data transfer.
Options: 110, 300, 600, 1200, 2400, 4800, 9600,
19200, 38400, 57600, 76800 or 115200
Factory setting: 9600
– BACnet: allows you to enable or disable the BACnet communica-
tions protocol. Enabling or disabling BACnet always requires a
power cycle of the unit.
Options: BACnet/IP – enables BACnet/IP over the
RJ45 (Ethernet) interface.
MSTP – enables BACnet MSTP over the
RS485 interface. Note: The Nortec GS humidier is a slave-only BACnet MSTP device.
O – disables BACnet communications
protocol.
Factory setting: O
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BACnet Parameters Tab (continued)
The following settings appear only if BACnet is set to "BACnet/IP" or
"MSTP".
– Device Name: allows you to assign a name to the humidier for
– MSTP Mode: Master or Slave
– Baud Rate: Determines the speed of data transmission for
– Device Description: allows you to enter a description for the
– Device Location: allows you to enter the location of the
– Node ID: allows you to assign a node ID to the humidier for
communications over the BACnet/IP protocol.
When set to BACnet MSTP the Nortec GS humidier communicates as a BACnet slave only. BACnet master functionality
requires installation of optional hardware.
communication on the Modbus network. The higher the value,
the more its per second is transferred.
humidier.
humidier.
communications over the BACnet/IP protocol.
Setting range: 1-9999999
Factory setting: 1001
– BACnet IP Port: allows you to assign a IP port number for the
humidier.
Setting range: 1-65535
Factory setting: 47808
– BACnet MSTP MAC: allows you to assign a MSTP MAC ad-
dress for the humidier.
Setting range: 128-254
Factory setting: 128
– Foreign Device: Determines the speed of data transmission.
The higher the value, the more its per second is transferred.
When Foreign Device is ON, BBMD IP Port, IP Address, and
Re-Register Time appears.
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Nortec Online Tab
– Nortec Online: provides web-based remote monitoring. This
operation operates in conjunction with a server at Condair's facilities and allows the user to monitor and control various aspects of
humidier operation, such as diagnostics and trend data, and send
email notications for service/fault warnings.
Options: Enabled – connects to Nortec Online.
Disabled – prevents connection to Nortec Online
Network Time
– Online Status:
– PIN: shows the PIN generated by the server. The PIN is required to
register the unit on the Nortec Online server.
– Serial Number: shows the serial number of the humidier (that
was registered online)
– JID: shows the Jabber ID of the humidier. This ID is used by the
server to identify the humidier.
(available when Nortec Online is enabled)
– Time Zone: Sets the time zone the humidier is installed in, and
the interval Nortec Online will use to check the current time.
Range: 0-0
Factory setting: 6
– Update Interval: Set the time for logging events on the Nortec
Online server.
Range: 1-120 min
Factory setting: 60 min
shows the current connection status to Nortec Online
Nortec GS
Remote Fault Board
– Indication: Alters how system warnings are generated on the
remote fault board. If warning is selected the RFB will activate the
service output on any system warning, including system notications prior to completing automated corrective actions (ex. ll timeout). If Service is selected, the RFB will activate the service output
only for service warnings.
Options: Warning, Service
Factory setting: Warning
– Safety Loop: when enabled the remote fault board will activate the
service relay upon the security loop opening
Options: Yes, No
Factory setting: No
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4.2.7.2 Service Menu
The Service menu lets you enter the startup code, reset the service reminder after performing scheduled
maintenance, access the fault and maintenance history lists and perform diagnostics. Refer to Figure 8
on page 24. Refer to Table 6 on page 24 for the menu structure.
Each tab under the Service menu is discussed below. The Service menu can also be accessed from the
maintenance and fault status area on the Home screen – refer to Figure 8 on page 24.
Humidier Service Tab
– Drain Tank:
drain the tank using this function. A warning message is displayed asking you to conrm if you want to proceed with draining the tank. Refer
to "Manually Initiate Tank Draining" on page 47 for detailed instructions.
– Clean Tank: allows you to ush the tank in preparation for main-
tenance. It can take up to 2 hours to ush and drain the tank using
this function. A warning message is displayed asking you to conrm
if you want to proceed.
DO NOT remove the tank cover until the until has cooled
down to a safe temperature and the tank is fully empty.
– Service Interval: allows you to set the time interval between
scheduled maintenance on the unit.
Setting range: 0-3999 hr
Factory setting: 500 hr
– Reset Service Reminder: allows you to reset the service reminder
message after performing scheduled maintenance on the unit. A
warning message is displayed asking you to conrm the reset.
allows you to drain the tank. It can take up to 1 hour to
WARNING!
Risk of severe burns from contact with hot steam
vapours or hot water!
General Service Tab
CAUTION!
Risk of damage to equipment!
DO NOT reset the service reminder unless the scheduled
maintenance has been performed.
– Disable Burners: allows you to view the Burners tab (not shown)
so you can enable or disable individual burners in the unit.
– Burner "n": allows you to enable or disable the individual burn-
er; where "n" represents the burner number (1 to 4, depending
on the number of blowers in the unit).
Options: On or O
Factory setting: On
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Fault/Service History Tab
Note: Make sure that Date and Time are set correctly so that fault and maintenance history events can
be correctly analyzed.
– Fault History: allows you to view the fault history list.
– Service History: allows you to view the service history list.
– Reset Fault History: (contact your Condair representative) allows
you to reset the fault history. A warning message is displayed asking you to conrm the reset. All previously recorded fault history is
erased.
– Reset Service History: (contact your Condair representative)
allows you to reset the service history. A warning message is displayed asking you to conrm the reset. All previously recorded
service history is erased.
– Export History: allows you to send your fault and service history to
a USB device.
Diagnostics Tab
– Input Diagnostics: allows you to access the Input Diagnostics menu and
view the following tabs which show the current status of all inputs to the integrated controller, as well as calculated parameters.
Controls Tab
– Digital RH/Demand
Channel 1 and
Channel 2
System Tab
– Over Temp
– Tank Temp
Blowers Tab
– Blower RPM 1-4
Counters Tab
– Primary Valve 1 and
2 Count
– FTBD
– Safety Loop
– Float Low
– Float Mid
– Float High
– Secondary Valve 1
and 2 Count
– Exhaust in Duct
– A/P 1-4
– G/V 1-4
– Pulse Time On 1
and 2
Nortec GS
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– Output Diagnostics: (contact your Condair representative) allows you to ac-
cess the Output Diagnostics menu to enable or disable various system components. Note: The diagnostic menu will only be displayed after you acknowledge the warning message that the humidier will be placed in standby mode.
Output Diagnostics Tab
– Blower Relay
– Drain Water Cool
Valve
– Primary Fill Valve 1
and 2
– Relay Diagnostics: allows you to access the Relay Diagnostics menu to
enable or disable the relays on the remote fault board. Note: The diagnostic
menu will only be displayed after you acknowledge the warning message that
the humidier will be placed in standby mode.
Remote Fault Board Tab
– Running – Service – Fault
4.2.7.3 Setpoint
– Secondary Fill Valve
1 and 2
– Drain Pump
– Fan On
– Ignition Mod 1-4
– Setpoint: set the desired conditions(RH setpoint) that the humidi-
er must try to maintain. This setting only appears when the Control
Mode CH 1 is set to RH P or RH PI. Refer to page 28.
– Freeze Valve
– Blower PWM
– Blower RPM 1 and 2
4.2.7.4 Administrator Menu
The Administrator menu lets you enable and disable password control, or install updates for the control
software. Refer to Figure 4 on page 32. Refer to Table 6 on page 24 for the menu structure.
Each tab under the Administrator menu is discussed below.
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Password Setting Tab
Software Updates Tab
– Setpoint Password: allows you to enable or disable password
control to modify setpoint values when the humidier is congured
to operate on internal RH(P) or RH(PI) control.
Options: Yes –
No –
Factory setting: Yes
– Main Menu Password: allows you to enable or disable password
control to access the Main menu.
Options: Yes –
No –
Factory setting: Yes
– Software Update: allows you to update the control software. A
warning message is displayed asking you to conrm the software
updating.
CAUTION! The control software will be corrupted if
updating is interrupted, which may render the humidier
unusable.
Refer to "Installing Software Updates" on page 66 for detailed
instructions.
requires password to modify setpoint values.
requires no password to modify setpoint values.
requires password to access the Main menu.
requires no password to access the Main menu.
Software Settings Tab
– Driver A/B Update: allows you to update the driver board rmware
for steam cylinder A/B
– Load Contact Info Page:
information (for technical support) in the unit, from a USB memory
stick. This information is shown when selecting Help on the Home
Screen. Information includes Company Name, Address, Telephone
Number, Email, and Website. Please contact your Condair representative for assistance with this.
– Manually Load Contact Info: allows you to manually enter the
Company Name, Address, Telephone Number, Email, and Website,
that will appear when the user selects Help from the Home Screen.
– Load Logger Denition: allows you to load a logger denition le
from a USB drive to save data (CSV le) on the USB while the unit
is functioning. A factory supplied access le is required to enable
operation. The interval between recordings can be changed from
the Engineering menu (see your Condair representative).
allows you to automatically insert contact
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4.3 Software Conguration
The Nortec GS humidier is shipped fully congured from the factory to suit your site-specic requirements, but this can be modied as needed. This section provides the necessary instructions to recongure the control software.
4.3.1 Conguring the Control Software
Perform the basic setup of the control software as follows, if necessary:
1. Make sure that all control wiring and jumpers are installed as described in "External Connections"
in the Installation Manual.
2. Set up the following parameters:
• Source – select the type of control signals to the humidier ("Analog", "Modbus", "BACnet/IP", etc.,).
Select "Analog" if a sensor/transducer signal or a demand signal from an external P/PI (proportional)/(proportional-integral) controller is wired directly to the humidier. Otherwise, select
an applicable digital communication protocol from the list. If your humidier has the optional
Lonworks or BACnet (BTL) module installed, select "Modbus".
• Control Channels – select the number of control channels.
Select "Dual" if controlling the humidier with a high limit and a control signal; otherwise set to
"Single".
• Control Mode – select the general control mode for the incoming control and high limit signal
("Demand", "RH P", "RH PI", or "On/O").
Select "Demand" if the control signal is a demand signal from an external controller. Select "RH
P" or "RH PI", as appropriate, if the control signal is from a sensor/transducer. Or select "On/O"
if the control signal is from an external On/O humidistat.
• Signal Type – select the signal type of the incoming control signal if Control Mode is set to "Demand",
"RH P" or "RH PI", and signal Source is set to "Analog".
Select from "0-5V", "1-5V", "0-10V", "2-10V", "0-20V", "0-16V", "3.2-16V", "0-20mA", or "4-20mA",
as appropriate for the external control device connected to Channel 1.
This concludes the basic setup of the control software.
4.3.2 Conguring for Multi-Unit Operation
Set up the control software for multi-unit operation as described below. A maximum of four humidiers
can be set up in a "Main-Extension" conguration using Condair's Linkup system to satisfy large humidication needs.
IMPORTANT! This procedure should only be used to control multiple humidiers that are using the
same control signal inputs from the same conditioned environment.
1. Make sure that all wiring and jumpers are installed, as described in "Connecting Multiple Units Using
Linkup" in the Installation Manual.
2. Congure the main humidier as described in "Conguring the Control Software" on page 42.
3. Set Linkup to "Main" on the humidier that will be designated as Main in the Linkup chain, and set up
the following parameters on it:
• Linkup Units – select the total number of humidiers in the Linkup chain. For example, if there is
one main unit and two extension units, then the total number of humidier in the chain is 3.
• Linkup Type – select the mode of operation of the humidiers in the Linkup chain ("Series" or
• Sequence Rotation – enable or disable the function that manages the starting order to balance the
42 Operator Interface
"Parallel").
operating hours on each steam cylinder. Note: This setting is available only if Linkup Type is set
to "Series".
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• Sequence Interval – set the time interval used by the control software to establish a new operating
sequence to balance the operating hours on the steam cylinders in the Linkup chain.
• Linkup Timeout – if required, change the maximum time limit that the units in the Linkup chain can
operate without a connection to each other before they generate a Linkup Timeout warning
message.
• Zero Out – if required, set the percentage value of the system demand signal at which the unit is
switched on.
• Full Out – if required, set the percentage value of the system demand signal at which the unit
achieves 100% demand.
4. Set Linkup in each extension humidier as Ext1, Ext2, ...
Note: Each extension unit must be a unique extension number.
The humidiers in the Linkup chain are now set up to generate steam upon humidity demand.
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5 Operation
5.1 General
Personnel Qualications
The Nortec GS humidier must only be operated by personnel who are adequately qualied, well trained
and are authorized by the customer.
Safety
Observe all safety precautions described in "For Your Safety".
5.2 Operating Procedures
The procedures described in this section assume that the Nortec GS humidier has been set up properly
and commissioned by a Condair technician or Condair-approved technician.
Before the Nortec GS humidier can initiate combustion, it must be lled with water and the control
software must perform a series of functional and safety tests.
5.2.1 Filling the System
Fill the Nortec GS humidier as follows. The control software also performs the oat test to ensure that
the ll system, the water level controls and the drain pump(s) are functioning properly.
1. Close the manual gas shuto valve in the supply line.
2. Open the shuto valve in the water supply line.
3. Set the On/O button on the humidier to the On position.
The control software then energizes the dual ll valves and starts to ll the tank. When the water in
the oat chamber(s) reaches the L1 level (red LED), the control software runs a series of tests on
the ll and drain system as described in "Water Management" on page 15. On successful completion of
the tests, the oat chamber is lled to the L3 level (green LED), and the humidier goes into standby
mode. This process can take approximately 10-30 minutes depending on the size of the unit.
4. Set the On/O button to the O position, and perform the "Ignition Safety Shutoff Test" described below.
5.2.2 Ignition Safety Shuto Test
Perform the ignition safety shuto test as described below:
1. Check that the manual gas shuto valve in the supply line is still closed.
2. Make sure that the contacts of all devices connected to the external security loop are closed.
44 Operation
3. Set the On/O button to the On position. The control software runs a series of tests on the ll and
drain system, and on successful completion the humidier goes into standby mode.
4. Set the demand signal to the humidier from the building management system (BMS) or humidistat
at 100%.
The control software energizes the blower(s) to initiate the combustion sequence. The blower(s) run
at full capacity for the pre-purge duration to purge the system. The control software then veries the
proper functioning of the safety systems and the blowers as described in "Combustion" on page 14.
After the safety systems check is completed successfully, the ignition control module(s) is energized.
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The spark-igniter(s) attempts to re up three times to ignite the gas-air mixture. Since the gas supply
is shut o, no ame is detected by the ame sensor(s) and the gas valve(s) is de-energized. The
red LED in the ignition control module(s) ashes to indicate a safety lockout. The warning message
"Ignition Fail" also appears on the touchscreen display after a short delay.
Note: On units with multiple burners, each burner attempts to ignite in sequence. Hence, it is important to wait for all burners to complete its cycle.
The ignition safety shuto test is successful when no gas ows to the burner(s) when the manual
gas shuto valve is closed.
After all burners have failed to ignite, the fault message "No Burners Available" will appear on the
display. The blowers will perform a post-purge and then shut o.
5. Power cycle the humidier to reset the fault condition.
6. Open the manual gas shuto valve.
5.2.3 Starting the Humidier
Start the humidier as follows:
1. Make sure that the tank in the humidier is lled with water – refer to "Filling the System" on page 44.
2. Make sure that the ignition safety shutdown test is completed – refer to "Ignition Safety Shutoff Test" on
page 44.
3. Check that the shuto valve in the water supply line is open.
4. Check that the manual gas shuto valve in the supply line is open
5. On the CS/NX models, make sure that the condensate trap inside the unit is primed properly.
6. Check that the contacts of all devices connected to the external security loop are closed.
7. Make sure that all access panels on the humidier are installed and fastened securely.
8. Set the On/O button on the humidier to the On position.
The control software then energizes the dual ll valve(s) and starts to ll the tank. It then performs
a series of tests to verify the function of the oats, the dual ll valves and the drain pump – refer to
"Water Management" on page 15. Upon successful completion of the tests, the combustion sequence
starts – refer to "Combustion" on page 14.
Depending on the system demand, the blower(s) runs faster or slower to control the input of the
burner(s). The generated heat turns the water in the tank to steam, which is then delivered to the
distribution system.
As the water level in the tank is reduced due to evaporation, the dual ll valves pulse to maintain water
at the proper level. In CS/NX models, cold ll water passes through the secondary heat-exchanger.
Here, heat from the exhaust warms up the cold ll water entering the tank before entering the ll
box. The water will then ow from the ll box into the tank.
When the humidity demand has been satised (demand drops below the minimum %), the gas
valve(s) is de-energized. The blower(s) then performs a post-purge of the combustion chamber(s),
and then shuts o.
If there is no humidity demand, the humidier goes into standby mode to await the next humidity
demand signal.
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5.2.4 Remote Monitoring
The Nortec GS humidier can be monitored remotely through the remote fault board wired to a remote
monitoring system. Table 7 describes the function of each relay when triggered.
Table 7: Remote Relay Function
Remote Relay Description
Error The humidier is stopped due to a fault condition, or may be oper-
able only for a limited period of time.
Service/Warning Depending on the software conguration, indicates that a service
warning or a system warning/notication is active.
Unit On The humidier has power, and the On/O switch is in the On
position.
The Nortec GS humidier can also be monitored remotely from a laptop or desktop computer using
the ethernet port on the integrated control board. Contact your Condair representative for assistance.
5.2.5 Inspections During Operation
Perform regular inspection of the Nortec GS humidier and the humidication system when it is in operation. Inspect the following:
Check the gas connection for any leaks.
Check the water, drain and steam connections for any leakages.
If applicable, check the humidier and other system components have not shifted from their mount-
ings, and are fastened securely.
Check for leaks in the exhaust vent. Check that there are no obstructions anywhere in the exhaust
vent, including the exhaust terminal.
Keep the area around the air intake in the unit clear of all obstructions. If an air intake vent is used,
check for leaks and obstructions in the vent, including the intake terminal.
Check the area around the unit is clear of all insulating and combustible materials.
Visually check the electrical wiring for any damage.
Check the Home screen on the humidier for service or system warning messages.
If any irregularities (leakages, fault messages or damaged components) are found, shut down the
Nortec GS humidier before performing service – refer to "Shutting Down" on page 48. Contact your Condair
representative if assistance is required.
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5.2.6 Manually Initiate Tank Draining
Figure 9: Drain Screens
During periods of inactivity, such as o-season or periods of low demand, drain the water from the tank.
To drain the tank in the Nortec GS humidier, manually initiate draining as follows. Refer to Figure 9.
1. Select the <Drain> button on the Home screen. If more than one humidier is connected in a Linkup
chain, select the appropriate tank, then press the check mark.
2. Select the <Yes> button on the conrmation screen. If humidication is in progress, it is interrupted
and the drain pump(s) empties the tank. A progress bar shows the status of the drain cycle.
Select the <Cancel> button at any time to interrupt the drain cycle. If the drain cycle is interrupted
before it is completed, open the manual drain valve and verify that there is still water in the tank.
Close the manual drain valve, then select the <No> button on the next screen to conrm that the
tank has not been emptied fully.
Note: If necessary, set the On/O switch to the O position at the end of the drain cycle to prevent
the humidier from lling the tank again.
The tank may contain steam or hot water at up to 212 °F (100 °C). Contact with the hot
surfaces, steam vapors or hot water can result in severe burns.
Prevention: Never open the tank until it has been fully drained, and the unit has cooled down to
a safe temperature. Never use the manual drain valve until the unit has cooled down. Use the
manual drain valve to verify that the tank is empty before removing the tank cover.
Note: If the control software/drain valve(s) does not function properly, wait for the unit to cool down
then open the manual drain valve and empty the tank. Failure to do so may damage drain lines that are
not rated to handle hot water at up to 212 °F (100 °C). Close the drain valve after emptying the tank.
5.2.7 Full Tank Blowdown
WARNING!
Risk of severe burns from contact with hot surfaces, steam or hot water!
Nortec GS
The control software in the Nortec GS humidier performs a full tank blowdown to reduce the amount of
dissolved minerals accumulated inside the tank. The Drain Cool function in the control software permits
drain water cooling whenever the drain pump runs. Make sure that the function is enabled if drain cooling is required. The frequency of the blowdown can be set in the control software.
In addition to the software-controlled full tank blowdown, a separate 24 VAC signal connected to pins
"1" and "8" in the low voltage terminal strip can also initiate a full tank blowdown. When a full tank
blowdown is initiated, the tank is drained fully then relled. Make sure the Drain Cool function is enabled
if drain cooling is required.
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47Operation
Page 48
5.2.8 Shutting Down
DANGER!
Risk of electric shock!
The control cabinet in the Nortec GS has live voltage. Turning o the unit at the On/O
switch does not shut o power to the control cabinet. Touching live parts may cause severe
injury or even death.
Prevention: Before performing any work inside the humidier or with the humidication system,
shut down the humidier properly as described below.
Shut down the Nortec GS humidier as follows for maintenance, or at the end of the season:
1. Set the demand signal to the humidier from the BMS or the humidistat at 0%. Then allow the burner(s)
to shut o and the blower(s) to perform a post-purge of the combustion chamber(s).
2. Manually initiate draining of the tank. Refer to "Manually Initiate Tank Draining" on page 47.
The tank may contain steam or hot water at up to 212 °F (100 °C). Contact with the hot
surfaces, steam vapors or hot water can result in severe burns.
Prevention: Never open the tank until it has been fully drained, and the unit has cooled down to
a safe temperature. Never use the manual drain valve until the unit has cooled down. Use the
manual drain valve to verify that the tank is empty before removing the tank cover.
WARNING!
Risk of severe burns from contact with hot surfaces, steam or hot water!
Note: If the control software/drain valve(s) does not function properly, wait for the unit to cool down
then open the manual drain valve and empty the tank. Failure to do so may damage drain lines that are
not rated to handle hot water at up to 212 °F (100 °C). Close the drain valve after emptying the tank.
3. Make a note of any fault code displayed on the Home screen.
Note: At the end of the season, report the fault history to a Condair-certied technician.
Select Service > Fault/Service History tab to access the fault history.
4. Set the On/O button to the O position.
5. Close the manual gas shuto valve in the supply line.
6. Close the shuto valve in the water supply line.
7. Disconnect the power supply to the humidier at the external disconnect switch. To prevent accidental
power-up, lockout and tag out according to the established safety practices at your facility.
WARNING!
Risk of severe burns from contact with hot surfaces!
Components of the steam system may reach 212°F (100°C) during operation. Contact
with the hot surfaces can result in severe burns.
Prevention: Avoid touching any components in the plumbing cabinet until the unit has cooled
down to a safe temperature.
8. Wait for the unit to cool down to a safe temperature before performing any maintenance inside the
plumbing cabinet.
5.2.9 Restarting After Shutdown
Restart the Nortec GS humidier as follows after it has been shut down for maintenance or at the start
of the season:
48 Operation
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DANGER!
Risk of harm to personnel or damage to property.
Operating a damaged or improperly secured humidier presents a risk of danger to person-
nel or damage to property.
Prevention: Do not restart a damaged or improperly secured humidier.
1. Examine the humidier and other system components for damage. Do not use the applicance if any
part of the humidier has been under water. Call a qualied service technician to inspect and replace
any part of the control system or gas control that has been under water.
2. Check for loose or damaged electrical connections, and repair if necessary.
3. If applicable, make sure that the humidier and its components have not shifted from their mountings, and are fastened securely.
4. Make sure that all condensate traps in the exhaust and steam lines are primed properly.
5. Clean any build-up of dirt around the control cabinet, the area around the burner(s). Clean the area
around the air intake inlet to prevent contaminants from being drawn into the combustion chamber.
6. Clean the air intake terminal, if the humidier is connected to the exterior.
7. Make sure that all access panels on the humidier are installed and fastened securely. Refer to
"Removal and Installation of Access Panels" on page 55.
8. Remove the lock and tag from the external disconnect switch, and restore power to the humidier.
9. Open the water and gas supply to the unit.
10. Start up the humidier as described in "Starting the Humidier" on page 45.
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6 Maintenance
6.1 General
To ensure proper performance and long operating life of the Nortec GS humidier, Condair recommends
inspection of the appliance and installation at least once a year by a qualied service person. The amount
and type of maintenance required is generally dependent on how much the humidier operates. The
Nortec GS humidier monitors the amount of steam produced over time and will indicate when service
is required. All units come with a default service interval of 1000 hours, which can be adjusted in the
control software.
The combustion air blower motors are permanently lubricated and do not require lubrication.
The gas valves in the Nortec GS humidier are negative static pressure regulating valves. The valves are
factory-set for the correct gas type. The valve setting listed on the product rating plate is shown relative
to atmosphere – this setting will always remain constant. Contact the factory if adjustment is needed.
IMPORTANT! Tampering with the gas valve, without the express consent of Condair, will void the
warranty.
In general, the burners do not require adjustment or servicing. The combustion chamber and heatexchanger tubes are all fabricated from stainless steel, and do not require internal cleaning.
The exhaust vent connected to the Nortec GS humidier does not require cleaning, but needs to be
inspected regularly for leaks, blockages, sagging and proper condensate removal.
For proper and safe operation of the unit, the area around the air intake in the unit must be kept clear of
all obstructions. If an air intake vent is used, it must be inspected for leaks and obstructions (including
the intake terminal).
Refer to "Mandatory Maintenance Schedule" on page 51 for other maintenance requirements. Also perform
regular inspections when the unit is operating – refer to "Inspections During Operation" on page 46.
IMPORTANT! Damage caused by use of non-approved parts is not covered by warranty. Use only
original Condair replacement parts.
Personnel Qualications
Maintenance on the Nortec GS humidier must only be performed by well qualied and properly trained
personnel authorized by the customer. It is the customer's responsibility to verify qualications of the
personnel.
Safety
Make sure that the Nortec GS humidier is shut down properly as described in "Shutting Down" on page 48,
and observe all safety precautions described in "For Your Safety" before performing any maintenance on
the humidier.
WARNING!
Wiring errors can cause improper and dangerous operation of the humidier!
Prevention: Tag all wires before disconnecting them. Reconnect all wires correctly after servicing,
and check the unit functions properly.
50 Maintenance
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Page 51
6.2 Mandatory Maintenance Schedule
Table 8 lists the mandatory maintenance schedule for the Nortec GS humidier.
Table 8: Mandatory Maintenance Schedule
30 Days
Task
Inspect drainage. X X X Perform a visual check of the drainage system, including the air gap
Perform water
analysis.
Inspect tank,
primary heatexchanger coils
and drain tting
for scale buildup.
Inspect secondary heatexchanger (CS/
NX model only)
for blockage.
Inspect sacricial
anode in the
tank.
Clean the oat
chamber.
Inspect the
hoses, ll valve
and drain pump
for blockage.
Remove dust
build-up on the
blower housing.
Inspect the
spark-igniter for
oxidation.
Inspect the
exhaust vent and
terminal.
Inspect air
intake vent and
terminal.
Inspect high
limit switch and
sensor.
After
Initial
Start-up
Mid-Sea-
son
– X X Perform a water analysis on a semi-annual basis to ensure opti-
X X X Adjust Blowdown Rate and FTBD Interval, as necessary, to reduce scale
– X X Inspect water ow through the secondary heat-exchanger and make
– – X Inspect the anode for severe corrosion or scale build-up. Scrape o
X X X Make sure that the oats move freely. Clean the oat chamber –
– X X Check the ll and drain hoses for blockage. Clean the inside of
– X X
– – X
X X X Check that there are no leaks in the exhaust vent, and it is not dam-
– X X Check the air intake vent for leaks, if used.
X X X Visually check that the thermocouple is attached to the exhaust vent,
End of
Season
(2000 hrs)
Maintenance
funnel and drainage into the building drain.
Initiate a manual drain (refer to "Manually Initiate Tank Draining" on
page 47), and visually check that water ows freely through the
drain.
mal performance. Refer to "Management of Scale and Chloride Levels" on
page 52.
build-up.
Inspect the inside of the tank, and make sure that scale build-up
does not exceed 2 in (50 mm). De-scale as required. Refer to "Clean-
ing the Tank" on page 56.
sure there is not blockage. Clean, if necessary – refer to "Cleaning the
Secondary Heat-exchanger" on page 58.
Inspect the condensate trap connected to the secondary heat-exchanger for blockage. Flush and prime the condensate trap, if necessary – refer to "Cleaning the Secondary Heat-exchanger" on page 58.
excess scale – refer to "Cleaning the Tank" on page 56. Replace the
anode, if necessary.
refer to "Cleaning the Float Chamber" on page 59.
the hoses – refer to "Cleaning Hoses, Dual Fill Valves and Drain Pump" on
page 60.
Clean the strainer in the dual ll valves – refer to "Cleaning Hoses, Dual
Fill Valves and Drain Pump" on page 60.
Clean the drain pump – refer to "Cleaning Hoses, Dual Fill Valves and Drain
Pump" on page 60.
Use an air gun to remove dust accumulation on the blower housing.
Clean the spark-igniter – refer to "Cleaning the Burner Assembly" on
page 62 for details.
aged or corroded excessively. Check the vent is secured properly
and has the proper slope.
Make sure there is no blockage in the exhaust vent including the
exhaust terminal.
When operating in a stable state, make sure that ue temperature
is 275-300 °F (135-149 °C) for the standard-eciency model. Flue
temperature should be 120-140 °F (49-60 °C) for CS/NX model.
Make sure there is no blockage in the air intake terminal, if used.
Clean the screen on the elbow at the intake air inlet.
and the thermocouple wires are connected properly to the switch.
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
51Maintenance
Page 52
30 Days
Task
Inspect condensate collection
system.
Inspect the
mounting of the
unit.
Inspect overall
condition of the
unit.
After
Initial
Start-up
Mid-Sea-
X X X Check for leaks or blockages in the condensate lines throughout the
– – X
– – X Check the unit for obvious signs of deterioration.
Also perform regular inspections when the unit is operating – refer to "Manually Initiate Tank Draining" on
page 47.
6.3 List of Consumables
Table 9 shows the list of consumable items for the Nortec GS humidier.
son
End of
Season
(2000 hrs)
Maintenance
steam line and exhaust vent (if applicable).
Make sure that the condensate traps are primed.
If a condensate neutralizer is installed, follow recommendations of the
device manufacturer.
Check the mounting surface on which the unit is installed is stable,
and the unit is secured properly to the mounting surface.
Table 9: Consumables
Consumable Item Replace Part Number
Spark igniter After 3 seasons (6000 hours) Refer to the Spare Parts List for kit part numbers.
Tank door gasket After each cleaning
Sacricial anode When needed
All other gaskets When removed
6.4 Management of Scale and Chloride Levels
As the humidier produces steam, minerals dissolved in the water begin to concentrate in the tank over
time. The amount of dissolved minerals and the chloride levels need to be carefully controlled so they
do not aect the eciency and service life of components. Hardness of water may cause foaming and
contribute to scale build-up in the humidier tank and oat chamber, and chlorides increase the risk
of stress corrosion cracking in stainless steel components of the humidier. All of these contribute to
reduced eciency, and increased amount of service and related maintenance costs.
IMPORTANT! Component failures due to water quality outside the recommended ranges (refer to
Table 10) are not covered by warranty.
The Nortec GS humidier periodically drains water from the tank to reduce the concentration of dissolved
minerals that accumulate during long-term operation. This is achieved in two ways – through a partial
blowdown and a full tank blowdown (FTBD).
In a partial blowdown, a certain amount of water (determined by the Blowdown Rate setting) is drained
from the tank and replaced with fresh water, thus lowering the concentration levels. In a FTBD, the
entire tank is drained when a certain number of weighted hours (determined by the FTBD Interval setting)
have elapsed, then relled with fresh water. Weighted hours is dened as the hours equivalent to a unit
operating at 100% output.
The humidier is shipped with a default Blowdown Rate of 25% for the partial blowdown, and FTBD Interval
of 100 hours for FTBD. These settings ensure that concentration of dissolved minerals is minimized for
all water conditions. However, they can be adjusted in the control software once water conditions are
known for your site – refer to "Adjusting Blowdown Settings" on page 53.
In addition to the software-controlled FTBD, a separate 24 VAC signal connected to pins "1" and "8" in
52 Maintenance
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 53
the low voltage terminal strip can also be used to initiate a full tank blowdown at any time.
Water Quality
The water quality requirements for the Nortec GS humidier are shown in Table 10. Do-it-yourself kits
are available to test hardness in the feed water. You can also contact your local municipality for a water
quality report, or order a Condair water test kit.
Table 10: Water Quality Requirements
Water Type Hardness
gpg (PPM)
Potable 0-15 (0-256) 5-8 0-50
Treated 0-0.99 (0-17) 5-8 0-50
Alkalinity (pH) Chloride (PPM)
6.4.1 Adjusting Blowdown Settings
Due to the wide range of water quality in dierent locations, it is important to adjust blowdown to suit
the local water conditions. Use the following procedure to adjust the blowdown rate and FTBD interval
for the water conditions at your site.
1. Test the quality of the feed water to determine the hardness and the chloride levels.
2. Then set the blowdown rate as follows:
a. Refer to Table 11 on page 53, and make a note of the recommended minimum blowdown rate for
the hardness level of the feed water.
b. Then refer to Table 12 on page 54, and make a note of the recommended minimum blowdown
rate for the chloride level in the feed water.
c. Set the Blowdown Rate on the Nortec GS humidier to the higher of the two noted values.
3. Set the FTBD interval as follows:
a. Refer to Table 11, and make a note of the recommended maximum FTBD interval value for the
hardness level of the feed water.
b. Refer to Table 12, and make a note of the recommended maximum FTBD interval value for the
chloride level in the feed water.
c. Set the FTBD Interval on the humidier to the lesser of the two noted values.
4. Once the base settings are set, monitor the water quality and maintenance history periodically, and
adjust the settings accordingly.
Note: Factory tests have shown that increasing the blowdown rate reduces scale build-up, while
reducing the FTBD interval reduces the chloride concentration levels in the tank. The adjusted settings should reect a balance between reducing concentration levels and minimizing water usage.
Table 11: Blowdown and FTBD Settings Related to Hardness of Water
Feed Water Hardness
gpg (PPM)
0-3.5
(0-60)
3.5-7
(60-120)
7-10.5
(120-180)
10.5-20.5
(180-350)
> 20.5
(> 350)
* Weighted hours
Recommended Minimum
Blowdown Rate (%)
12 72
25 72
40 72
60 48
Not recommended for the Nortec GS humidier without treatment of the water. Contact your local Condair representative.
Recommended Maximum
FTBD Interval (h)*
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
53Maintenance
Page 54
Table 12: Blowdown and FTBD Settings Related to Chloride Levels
Feed Water
Chloride Levels (PPM)
5 12 72
5-15 25 72
15-25 45 48
25-40 80 24
40-50 100 12
> 50 Not recommended for the Nortec GS humidier without treat-
* Weighted hours
Recommended Minimum
Blowdown Rate (%)
ment of the water. Contact your local Condair representative.
6.5 Maintenance Procedures
6.5.1 Removal and Installation of Access Panels
Removal
Remove the door and side panels in the humidier as follows. Refer to Figure 10 on page 55.
1. Turn the captive screw at the bottom of the door panel (control cabinet/plumbing cabinet) counterclockwise with a screwdriver.
2. Lift up the door panel slightly so that the top tabs clear the notches in the cabinet, then carefully
swing the bottom of the panel up, as shown, and remove the panel.
Recommended Maximum
FTBD Interval (h)*
3. To remove the left/right side panel, remove the screws and slide the panel towards the front of the
unit, so the tabs in the side of the panel clear the notches in the xed rear panel.
Note: The Nortec GS 50/100 does not have a removable left side panel. To remove the right side
panel, slide the panel towards the front of the humidier until the tabs at the top rear and bottom
rear of the panel clear the notches in the cabinet, then remove the panel.
Installation
Install the door and side panels in the humidier as follows. Refer to Figure 10 on page 55.
1. Align and slide the side panel (left/right) towards the rear of the unit, so the tabs in the side of the
panel engage with the notches in the xed rear panel. Install the screws and fasten the panel securely.
Note: To install the right side panel in the Nortec GS 50/100, align the tabs at the top rear and bottom rear of the panel with the notches in the cabinet, then slide the panel towards the rear of the
unit until it is seated properly.
2. Position the door panel (control cabinet/plumbing cabinet) so that the two tabs in the top rear of the
panel align with the notches in the cabinet.
3. Lower the door panel to seat the tabs in the notches, while ensuring that the tabs in the (left/right)
side panel engage with the notches in the side of the door panel. Refer to the detail in the gure.
4. Make sure that the door panel ts ush on the front and the side. Turn the captive screw in the door
panel clockwise to secure the door panel. Check that it is fastened securely.
54 Maintenance
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 55
1
11
10
2
9
Figure 10:
Access Panels Removal and Installation (GS 150 Shown)
1 Screw, (×4) typical
2 Panel, right side
3 Top tab, door panel
4 Notch, cabinet
7
8
3
5 Tab, side panel
6 Notch, door panel
7 Screw, captive
8 Door panel, control cabinet
4
5
6
9 Door panel, plumbing cabinet
10 Panel, left side
11 Panel, xed rear
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
55Maintenance
Page 56
6.5.2 Cleaning the Tank
Clean the inside of the tank, the outside of the primary heat-exchanger coils and the drain tting as follows.
The tank may contain steam or hot water at up to 212 °F (100 °C). Contact with the hot surfaces, steam vapors or hot water can result in severe burns.
Prevention: Drain the tank and allow the unit to cool down to a safe temperature before cleaning
the tank. Never open the tank until it has been fully drained. Never use the manual drain valve until
the unit has cooled down. Use the manual drain valve to verify that the tank is empty before removing the tank cover.
CAUTION!
Risk of damage to the humidier components!
Do not use solvents, aromatized or halogenized hydrocarbons, or other harsh chemicals for cleaning. Disinfectants may only be used if they do not leave behind toxic residue. Rinse all parts thoroughly with clean tap water after cleaning.
Note: It is not necessary to remove the tank from the unit in order to clean it.
1. Use the Clean Tank function in the control software to ush and drain the tank.
WARNING!
Risk of severe burns from contact with hot surfaces, steam or hot water!
2. Shut down the humidier as described in "Shutting Down" on page 48.
3. Remove the door panels (refer to "Removal and Installation of Access Panels" on page 54) and all covers.
4. Disconnect the ll hose from the drain tting.
5. Remove the door locks, four clamps, and the tank cover. Remove and discard the tank gasket.
6. Use a soft-bristled brush (not wire brush) or plastic (not metal) scraper to remove scale build-up from the
inside surfaces of the tank, outside of the primary heat-exchanger coils, the inside of the drain tting, and
carefully from the surface of the temperature sensor. Vacuum out the tank.
7. Rinse the drain tting and the inside of the tank thoroughly with clean tap water.
WARNING!
Risk of re!
DO NOT clean the sacricial anode with any chemicals. The anode can react with acids to
create ammable hydrogen gas.
8. Inspect the sacricial anode on the inside of the tank cover for excessive corrosion or scale build-up.
Use a soft-bristled brush (not wire brush) to remove scale build-up. Replace the anode, if necessary.
9. Install a new tank gasket (Condair does not recommend reusing the tank gasket), and secure the
tank cover to the tank as follows:
Note: The order of installation/torquing of the bolts for the tank cover are shown in the hexagonal symbols in
Figure 12 on page 57. Tighten bolts with your ngers and torque at the end of assembly.
56 Maintenance
CAUTION!
Risk of damage to the humidier components or injury!
DO NOT over-torque the bolts. Ensure the proper order of torquing is followed. Failure to do so may
cause damage to the humidifer components or injury. Re-torque values are located Table A1 on page 89.
a. Loosen jam nuts and M8x25 screws on all clamps. Remove top clamps by removing the M6x40
screw securing them in place.
b. Remove the door locks then side clamps, then remove the door and bottom clamp.Put bottom
clamp in place with tabs at ends of the bracket resting on the supports that extend from the tank.
c. Place the gasket into the groove of the door (tank cover) and set door with gasket on the bottom
clamp. Take care that gasket remains in position.
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 57
d. Install the top clamp(s) using the M6x40 screws (with anti-seize).
M6x40
M8x25
M8x25
M6x40
M6x40
M8x25
M6x40
M8x25
M8x25
M8x25
Hand tighten to hold door in place.
e. Install the left and right clamps. Hand tighten M8x25 screws to hold brackets in place.
f. Use tightening sequence shown below and
Torque top M6x40 screw(s) securing the clamp to 35 in-lb (3.9 Nm)
Torque top clamp, M8x25 screw(s) securing the door to 10 in-lb (1.2 Nm).
Torque side and bottom clamp, M8x25 screws to 20 in-lb (2.3 Nm).
g. Place the door locks on the door, over the left and right clamps, and secure them in place with
the jam nuts.
h. Secure all remaining jam nuts against brackets to hold remaining M8x25 screws in place.
10. Connect the ll hose to the drain tting and secure it with a clamp.
11. Re-start the humidier – refer to "Restarting After Shutdown" on page 48. The humidier then goes through
the start-up sequence. Check for any leaks in the tank cover.
5
Figure 11:
1 Coils, primary heat-exchanger
2 Tank
3 Anode, sacricial
4 Gasket, tank
Cleaning the Tank
5 Clamp, top
6 Cover, tank
7 Clamp, right side
8 Clamp, bottom
Bolt Torquing Sequence for Tank Doors
M8x25
1
2
9
M8x25
3
M8x25
6
M8x25
11
M8x25
M8x25
5
M8x25
4
M8x25
M8x25
M8x25
1
2
13
10
4
3
9
6
10
7
8
9 Clamp, left side
10 Lock, door
3
1
5
15
4
7
M8x25
2
M8x25
6
M8x25
9
8
Nortec GS
12
M8x25
Figure 12:
10
M8x25
8
7
M8x25M8x25
16
M8x25
18M8x25 12
Torquing the Tank Doors. Small and Large Doors Shown.
2583701_C_EN_1812_Nortec-GS_OM
11
17
14
M8x25
57Maintenance
Page 58
6.5.3 Cleaning the Secondary Heat-exchanger
3
5
Clean the secondary heat-exchanger and the condensate trap (CS/NX model only) as follows. Refer
to Figure 13.
WARNING!
Risk of severe burns from contact with hot surfaces!
Components of the unit can be hot to the touch. Contact with the hot surfaces can result in
severe burns.
Prevention: Allow the unit to cool down to a safe temperature before cleaning the components.
CAUTION!
Risk of damage to the humidier components!
Do not use solvents, aromatized or halogenized hydrocarbons, or other harsh chemicals for cleaning. Disinfectants may only be used if they do not leave behind toxic residue. Rinse all parts thoroughly with clean tap water after cleaning.
58 Maintenance
1
2
4
Figure 13:
1 Hose, dual ll valve to secondary heat-exchanger
2 Hose, secondary heat-exchanger to ll box via dual ll valve
3 Heat-exchanger, secondary
4 Dual ll valve
5 Trap, condensate
Cleaning Secondary Heat-exchanger - CS/NX Model Only (Nortec GS 100 Shown)
1
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 59
1. Drain the tank, and shut down the humidier as described in "Shutting Down" on page 48.
2. Remove the side panel – refer to "Removal and Installation of Access Panels" on page 54.
3. Disconnect the two water hoses from the secondary heat-exchanger.
4. Flush the inside of the secondary heat-exchanger with clean tap water.
5. Reconnect the water hoses.
6. Disconnect the condensate trap from the secondary heat-exchanger and ush out any scale build-up.
7. Reconnect the condensate trap, and prime the trap with water.
8. Re-start the humidier – refer to "Restarting After Shutdown" on page 48.
9. Check for leaks.
6.5.4 Cleaning the Float Chamber
Clean the oat chamber in the ll box as follows. Refer to Figure 14.
1
2
3
4
6
5
Nortec GS
Figure 14:
1 Screw (×3)
2 Sleeve, oat
3 Float (×2)
CAUTION!
Risk of damage to the humidier components!
Cleaning Float Chamber
2583701_C_EN_1812_Nortec-GS_OM
4 Float chamber
5 Support, oat chamber
6 Fill box weldment
59Maintenance
Page 60
Do not use solvents, aromatized or halogenized hydrocarbons, or other harsh chemicals for clean-
ing. Disinfectants may only be used if they do not leave behind toxic residue. Rinse all parts thoroughly with clean tap water after cleaning.
1. Shut down the humidier as described in "Shutting Down" on page 48.
2. Remove the side panel – refer to "Removal and Installation of Access Panels" on page 54.
3. Remove the oat chamber from the ll box weldment, the three screws, and the oat sleeve.
4. Carefully remove the two oats. Make a note of the orientation of the oats.
5. Use a soft-bristled brush (not wire brush) to remove all scale build-up on the oats, the inside of the
oat sleeve and the oat chamber. Rinse with clean tap water.
6. Visually check each oat for cracks or other damage. Place the two oats in a container lled with
clean water, and check that they both have equal buoyancy. If necessary, replace the oats.
IMPORTANT! When assembling the oat sleeve, make sure that the oats are in the same orientation as when they were disassembled – opposing poles of the magnet within the oats must
face up.
7. Assemble the oat sleeve making sure that the oats are installed correctly. Install the oat sleeve
and secure it to the ll box with the three screws.
8. Re-start the humidier – refer to "Restarting After Shutdown" on page 48.
9. Ensure that the Float Check is enabled in the features menu – refer to "Features Menu" on page 25.
10. Check for leaks.
6.5.5 Cleaning Hoses, Dual Fill Valves and Drain Pump
Clean the ll and drain hoses, the dual ll valves and the drain pump as follows. Refer to Figure 15 on
page 61.
CAUTION!
Risk of damage to the humidier components!
Do not use solvents, aromatized or halogenized hydrocarbons, or other harsh chemicals for cleaning. Disinfectants may only be used if they do not leave behind toxic residue.
1. Shut down the humidier as described in "Restarting After Shutdown" on page 48.
2. Remove the side panel – refer to "Removal and Installation of Access Panels" on page 54.
3. Loosen the hose clamps and remove the ll and drain hoses from the humidier.
4. Carefully remove the strainer in the dual ll valves. Use a soft-bristled brush (not wire brush) and
carefully remove any scale build-up on the strainer in the dual ll valve. Assemble the dual ll valves
after cleaning, taking care not to damage the strainer.
5. Remove the setscrew, and rotate the drain pump assembly to disengage it from the drain tting.
Rotate and separate the pump cover from the pump housing. Use a soft-bristled brush (not wire
brush) to remove any scale build-up on the inside of the pump cover, impeller, large O-ring and pump
housing. Assemble all drain pump components in reverse order after cleaning. Install the pump assembly in the drain tting, making sure that the small O-ring is installed in the drain tting. Secure
the drain pump in place with the setscrew.
60 Maintenance
6. Use a rubber mallet to knock out any scale build-up in the ll and drain hoses. Rinse the hoses
thoroughly with hot tap water before installing the hoses. Secure the hoses with clamps.
7. Re-start the humidier – refer to "Restarting After Shutdown" on page 48.
8. Check for leaks.
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 61
12
23
10
19
22
21
20
3
7
13
11
14
15
16
17
18
9
6
Nortec GS
8
5
Figure 15:
1 Valves, dual ll
2 Strainer
3 Hose, ll box weldment to drain pump
4 Fitting, drain
5 O-ring
6 Setscrew
7 Cover, pump
8 Housing, pump
9 Hose, manual drain
10 Hose, overow
11 Hose, inlet
12 Hose, tank to ll box weldment drain
13 Board, oat
14 Hose, dual ll valve to secondary heat-exchanger
Cleaning Hoses, Fill Valve and Drain Pump
2583701_C_EN_1812_Nortec-GS_OM
2
1
4
15 Hose, secondary heat-exchanger to trap hose
16 Hose, secondary heat-exchanger to inlet hose
17 Hose, dual ll valve to inlet hose
18 Hose, trap
19 Hose, ll box to tank (main)
20 Hose, ll box to drain pump
21 Fill box
22 Hose, ll chamber to tank
23 Adaptor, ll
61Maintenance
Page 62
6.5.6 Cleaning the Burner Assembly
The burner(s) in the Nortec GS humidier does not require maintenance. However, if the burner(s) is not
operating properly, clean the burner(s) and spark-igniter as described below. Refer to Figure 16.
WARNING!
Risk of severe injury to personnel, or property damage!
Prevention: Follow proper shutdown procedure before cleaning the burner(s).
1. Shut down the humidier as described in "Shutting Down" on page 48. Make sure that the tank has
been emptied.
2. Remove the plumbing cabinet door panel.
3. Remove the four M5 nuts that secure the blower tube to the burner assembly.
Figure 16:
Cleaning the Burner Assembly
7
6
5
9
8
1
4
2
3
62 Maintenance
1 Bolt, M6×14, hex-head (qty. 9)
2 Nut, M5
3 Tube, blower
4 Gasket, blower
5 Spark-igniter
6 Matting, burner assembly
7 Gasket, burner – use a new gasket every time the burner assembly is reassembled
8 Assembly, burner
9 Lock washer M6
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 63
4. Carefully swing the blower assembly and attached blower tube up to disengage it from the burner
M6x12
M6x12
M6x12
M6x12
M6x12
M6x40
M6x106M6x10
M6x1013M6x10
M6x103M6x10
M6x10
M6x10
M6x10
M6x10
M6x10
assembly.
5. Disconnect the ignition wire from the spark-igniter.
6. Remove the ten M6×12 hex-head bolts (M6x14 for newer units) and the burner assembly. Discard
the burner gasket.
7. Visually inspect the mating on the inside surface of the burner assembly for hot spots, tears, or any
clogging. If the matting has hot spots or tears, replace the burner assembly.
WARNING!
Risk of personal injury!
Prevention: Wear a safety mask and clean the burner assembly in a well ventilated area.
If the matting is clogged, DO NOT use a scraper to remove the blockage. Use low pressure air at
maximum 5 psi (35 Pa) to clear all blockages without damaging the matting. Blow air in the direction
of the arrow.
8. Visually inspect the spark-igniter for any oxidation. Carefully remove any build-up with emery cloth.
Check the electrode gap is 1/8 ± 1/16 in (3 ± 1.5 mm). DO NOT adjust the gap – replace the sparkigniter, if necessary.
9. Assemble the burner assembly in reverse order. Always use a new burner gasket.
10. Apply nickel anti-seize lubricant (Loctite® LB 771™ or equivalent) to the M6×14 hex-head bolts
before assembly. Install with M6 lock washers. Wipe o excess lubricant. Torque the bolts to 4 in·lb
(0.5 N·m). Refer to Figure 17 on page 63 and Figure 18 on page 63.
11. Torque the four M5 nuts to 10 in·lb (1.2 N·m).
12. Restart the unit and check that the burner(s) operates properly.
Bolt Torqueing Sequence for the Burner Assembly
5
6
5
12
Figure 17:
7
M6x12
3
M6x12
1
M6x12
9
M6x12
Torque Sequence for the Burner
14
8
4
2
10
Nortec GS
Figure 18:
7
M6x10
1
M6x10
9
Torque Sequence onto the Primary Heat-exchanger
M6x10
11
4
2583701_C_EN_1812_Nortec-GS_OM
10
2
8
63Maintenance
Page 64
6.5.7 Replacing Backup Battery
DANGER!
Risk of electric shock!
The Nortec GS humidier is mains powered. Live parts may be exposed when the door panel
on the control cabinet is removed. Touching live parts may cause severe injury or even
death.
Prevention: Shut down the unit as described in "Shutting Down" on page 48 before replacing the
backup battery.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidier 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.
Only a qualied service technician authorized by the customer should replace the backup battery on
the integrated control board.
Replace the backup battery on the integrated control board as follows. Refer to Figure 19 on page 64.
1. Remove the door panel on the control cabinet. Swing the front panel open.
2. Replace the backup battery on the integrated control board with a new 3V battery (CR 2032).
3. Close the front panel, and install the door panel, making sure that it is fastened securely.
4. Remove the lock and tag from the external disconnect switch, and restore power to the humidier.
3
2
1
64 Maintenance
Figure 19:
1 Panel, front
2 Battery – 3V (CR 2032)
3 Board, integrated control
Backup Battery Replacement
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6.5.8 Replacing Internal Fuse
DANGER!
Risk of electric shock!
The Nortec GS humidier is mains powered. Live parts may be exposed when the door panel
on the control cabinet is removed. Touching live parts may cause severe injury or even
death.
Prevention: Shut down the unit as described in "Shutting Down" on page 48 before replacing the internal fuse.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidier 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.
Only a qualied service technician authorized by the customer should replace the internal fuse.
Replace the internal fuse in the control cabinet as follows. Refer to Figure 20 on page 65.
1. Remove the door panel on the control cabinet. Swing the front panel open.
2. Replace the fuse with a fast-acting 6 A fuse.
3. Close the front panel, and install the door panel, making sure that it is fastened securely.
4. Remove the lock and tag from the external disconnect switch, and restore power to the humidier.
Nortec GS
Figure 20: 1Internal Fuse Replacement
1 Fuse, fast-acting, 6 A
2583701_C_EN_1812_Nortec-GS_OM
65Maintenance
Page 66
6.5.9 Resetting Service Reminder
CAUTION!
Risk of damage to equipment!
DO NOT reset the service reminder unless the scheduled maintenance has been performed.
Reset the service reminder in the control software as follows after performing the required scheduled
maintenance:
1. Select the <Main Menu> button on the Home screen, then enter the password to login. Refer to
"Main Menu" on page 24.
2. Select Service > General Service tab > Reset Service Reminder. A reset dialog appears and
prompts you to conrm the reset.
3. Select the <Yes> button on the conrmation screen. The maintenance warning and the service
reminder messages are reset.
Select the <No> button at any time to abort the reset.
6.6 Installing Software Updates
All software updates can be downloaded from the Downloads link on www.humidity.com. Download the le
and extract it to a USB memory stick that has been formatted to 32-bit FAT system. The software update
le (ending with .bin) should be located at the root level on the USB stick.
Note: If software updating is accidentally interrupted, the humidier will not operate. However, updating
can be resumed by leaving the USB key inserted in the board and power cycling the unit. The integrated
control board will detect that the software was not installed properly, and restart the updating.
Install the updates for the control software as follows:
DANGER!
Risk of electric shock!
The Nortec GS is mains powered. Live parts may be exposed when the door panel is re-
moved. Touching live parts may cause severe injury or even death.
Prevention: Shut down the humidier properly at the external disconnect switch before accessing
the integrated control board in the humidier.
1. Set the On/O button to the O position.
2. Disconnect the power supply to the humidier at the external disconnect switch. To prevent accidental
power-up, lockout and tag out according to the established safety practices at your facility.
3. Remove the door panel on the control cabinet – refer to "Removal and Installation of Access Panels" on
page 54.
4. Swing the front panel open.
5. Carefully insert the USB memory stick into the USB port. Make sure that the maximum length of the
memory stick does not exceed 3 in (75 mm).
6. Close the front panel, and install the door panel.
7. Remove the lock and tag from the external disconnect switch, and restore power to the humidier.
8. Set the On/O button to the On position.
9. When the Home screen appears, select the <MAIN Menu> button, then enter the password to login.
66 Maintenance
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CAUTION!
Risk of le corruption!
DO NOT interrupt software updating once it starts. Wait until updating is completed. Corrupted
control software can render the humidier unusable.
Note: If software updating is accidentally interrupted, the humidier will not operate. However,
updating can be resumed by leaving the USB key inserted in the board and power cycling the
unit. The integrated control board will detect that the software was not installed properly, and
restart the updating.
10. Select Administrator > Software Settings tab > Software Update to update the control software.
A progress bar shows the status of the updating process. When updating is completed, the Home
screen is displayed.
11. Repeat Step 1 to Step 4, and carefully remove the USB memory stick.
12. Close the front panel. Install the door panel, making sure that it is fastened securely – refer to "Removal
and Installation of Access Panels" on page 54.
13. Repeat Step 7 and Step 8 to power up the humidier.
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67Maintenance
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7 Fault Isolation
7.1 General
Troubleshooting of the Nortec GS humidier must only be performed by well qualied and well trained
personnel. Electrical repairs must only be performed by a licensed electrician authorized by the customer
or by Condair service technicians.
Troubleshooting the Nortec GS humidier may require personnel to access the inside of the control
cabinet in the humidier which may expose personnel and equipment to the hazards described below.
DANGER!
Risk of electric shock!
The Nortec GS humidier is mains powered. Live parts may be exposed when the access
panels are removed. Touching live parts may cause severe injury or even death.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidier 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.
7.2 Fault Indication
When a condition that is not normally expected occurs, it is detected by the control software and a warning or fault message is displayed in the Service/Warning/Fault status area of the Home screen (refer to
Figure 6 on page 18). The warning and fault message types are described in Table 13.
Table 13: Maintenance/Fault Status Descriptions
Message Type Descriptions
Warning
Fault
A condition with a "Warning" status is active. Typically, these conditions are
of a temporary nature, or conditions that cannot cause damage to the system. Depending on the condition, the Nortec GS humidier may be stopped
or remains operable (unless the warning relates to a control signal). If the
cause of the condition clears on its own accord, the warning message is
automatically reset. If the condition becomes worse, a fault message may
be triggered.
When a warning message is active, the status LED turns yellow in color.
A condition with a "Fault" status is active. Typically, these are conditions
which prevent further operation of the humidier, or conditions that can
cause damage to the system. When a fault condition occurs, the Nortec GS
humidier stops steam production immediately.
When a fault message is active, the status LED turns red in color.
68 Fault Isolation
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When a warning/fault condition occurs, select the warning or fault message to view the "" on page 38
and additional details. Refer to Figure 21.
Figure 21: Fault History Screens
In addition, the Service relay in the remote fault board can also be set up to indicate that a service warning or a system warning/notication is active.
7.3 General Troubleshooting
Most operational warning/fault conditions are caused by improper installation, or by not adhering to the suggested best practices for installation of the humidier and system components.
Hence, a full fault diagnosis always requires a thorough examination of the entire system (hose
connections, control systems, etc.).
Table 14 provides general guidelines for troubleshooting the Nortec GS humidier. For detailed trouble-
shooting information of the auxiliary system components, refer to their product manuals.
The list of Nortec GS warning and fault messages, and corrective actions are shown in Table 15 on page 71.
Nortec GS
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Humidier
Table 14: General Troubleshooting – Nortec GS Humidier
Problem Probable Cause Corrective Action(s)
Nothing happens when the
On/O switch is turned On.
Humidier will not produce
steam, or does not reach RH
setpoint value.
Humidier displays warning
or fault message.
Incorrect voltage, or no voltage. – Check the disconnect switch in the supply line.
– Check the fuse between the transformer and the On/
Step-down transformer not outputting 24 VAC.
Safety loop is open. – Check if the message "Safety Loop" is displayed in
Output is limited by the high limit
humidistat signal.
No signal on Channel 1. – Check voltage between low voltage terminal strip
No signal on Channel 2 (on units
with Control Channels set to "Dual").
Capacity has been manually
limited.
The control software has detected an abnormal condition.
– Check the fuse.
– Measure and conrm 24 VAC on the transformer
– Check if there is 24 VAC supply at low voltage termi-
– Check that all On/O devices connected to low volt-
– Check if the high limit humidistat is installed too
– Check voltage between low voltage terminal strip
– Check/adjust Manual Capacity, if necessary.
– Refer to "Nortec GS Warning and Fault List" on page 71.
O switch.
primary connections. Replace the transformer, if
necessary.
the operating status area of the Home screen.
nal strip pin "2".
age terminal strip pins "1" and "2" are wired properly,
and their contacts are closed when they should be.
close to the steam distributor. The recommendation
is ve times the absorption distance or minimum
10 ft (3 m). Check the setpoint value for the high
limit – typically set at 80% RH.
pins "3" and "4". For a demand signal conguration,
the signal must be 27% of full scale signal for the
humidier to start. For a transducer signal conguration, the signal must be lower than the setpoint value
for the humidier to start.
pins "3" and "5". For a demand signal conguration,
the signal must be 27% of full scale signal for the
humidier to start. For a transducer signal conguration, the signal must be lower than the setpoint value
for the humidier to start.
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7.4 Nortec GS Warning and Fault List
Table 15 shows the list of warning and fault messages triggered by the control software in the Nortec GS
humidier, and the corrective actions. The warning code escalates to a fault code if the alarm condition is not resolved within a certain period of time. After xing a fault condition, reset the fault status as
described in "Resetting Fault Status" on page 80.
The components of the driver board and the integrated control board referenced in this section are shown
in Figure 22 on page 81 and Figure 23 on page 81.
Table 15: Nortec GS Warning and Fault List
Code
Warning Fault
W01 E01 Smartcard missing No communication with the SIM card.
W06 – Main Unit Missing
W07 – Ext Fault An Extension unit has a fault condition which was communicated to the
– E10 CTRLR Fault
Message Probable Cause Corrective Action(s)
(or)
Extension Missing
(No Signal Warning)
(or)
Memory
(or)
CTRLR Reset
The SIM card may not be seated
properly on the integrated control
board.
Defective SIM card. Contact your Condair representa-
No communication between the Extension unit and the Main unit in the
Linkup chain. Operation is interrupted until a signal is received.
The Linkup conguration between
the Main and Extension unit is not set
correctly.
The Main unit or Extension unit may
be switched o.
Loose connection. – Check the connection between
Main unit.
Alarm condition in the Extension
unit(s).
Flash memory read/write fault. – Contact your Condair
Check that the SIM card is seated
properly.
tive.
– Check the Linkup conguration.
– Switch on the Main and/or
Extension unit.
the Main and Extension units.
– Check the Extension unit(s).
representative.
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71Fault Isolation
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Code
Message Probable Cause Corrective Action(s)
Warning Fault
W22 E22 Fill Warning (W22)
Fill Timeout (E22)
W28 E28 Maintenance Due
Warning
Maintenance Due
Fault (on fault)
The ll valve(s) have been active for an extended length of time and the
water level is still zero. The dual ll valves remain activated.
The Fill Warning will eventually become a Fill Timeout if the issue has not
been addressed.
Water supply problems. – Make sure that the water sup-
Loose wiring, or clogged strainer in
dual ll valves.
Drain pump running, or manual drain
valve open.
Floats may be stuck. – Visually check that the dierent
Fill valve relay on the driver board
not seated properly, or defective.
Defective dual ll valves. – Check for 24 VAC on the pins
Scale build-up in the drain tting. – Clean the drain tting, as
The preset service interval time has elapsed. The unit will continue to run
for 200 hours before a fault message is generated.
The unit will not operate if the warning message escalates to a fault message.
IMPORTANT! Perform the required scheduled maintenance, then reset
the service reminder before restarting the unit.
Unit needs to be serviced. – Refer to "Maintenance" on page 51
ply line is open, and there is
adequate ow and pressure.
– Check the wiring to the oat
board and the dual ll valves.
– Check the strainer in the dual ll
valves is not clogged – refer to
"Cleaning Hoses, Dual Fill Valves and
Drain Pump" on page 62.
– Check that the manual drain
valve is closed, and the drain
pump is not running.
LEDs on the oat board light up
as the water level in the oat
chamber changes. If necessary,
clean the oat chamber – refer
to "Cleaning the Float Chamber" on
page 61.
CAUTION! Electro-static discharge
damage to board.
– Check that LED3 (corresponding
to REL4 for the high volume ll
valve) and LED4 (corresponding to REL5 for the low volume
ll valve) on the driver board
light up when the ll valves are
supposed to be energized. If
not, check the relay(s) is seated
properly on the driver board.
– Swap the relay(s) with another
relay on the board to verify that it
is working. If necessary, replace
the relay.
of the dual ll valves. If necessary, replace the dual ll valves.
Reconnect the wires correctly.
described in "Cleaning the Tank" on
page 57.
for maintenance procedures.
– Reset the service reminder
after performing the required
scheduled maintenance – refer
to "Resetting Service Reminder" on
page 68.
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Code
Warning Fault
W32 – RH Signal The RH input is less than 3%. Operation is interrupted until an input higher
Message Probable Cause Corrective Action(s)
than 3% is received.
Loose wiring, faulty sensor. – Check the connection between
Layout of the humidier control system may be causing signal interference.
W34 – Remote Disabled The unit has been disabled remotely by the building management system
(BMS) through Modbus communication. Operation is interrupted until the
unit is enabled again through Modbus or the control software.
Unit disabled through the BMS. – Enable the unit through the
W35 – BMS T/O (timeout) The maximum wait time without any communications from the BMS has
been exceeded. If the signal Source is set to "Analog", the humidier will
continue operating; otherwise it stops producing steam until communications with the BMS is re-established.
W42 – RH High Warning Sensed humidity is above the RH High value congured in the control soft-
ware. The unit will remain idle until the sensed RH value drops below the
setpoint value.
Incorrect layout of the humidier
control system (sensor location too
close to steam distributor or other
sources that aect measurement), or
defective components.
Humidier capacity too large for the
space being humidied.
The RH High value for the sensor
signal may be set too low.
W43 – RH Low Warning Sensed humidity is below the minimum value congured in the control soft-
ware. The unit should continue operating unless it is in standby mode.
Incorrect layout of the humidier
control system (sensor location too
close to steam distributor or other
sources that aect measurement), or
defective components.
The RH Low value for the sensor
signal may be set too high.
Unit may be in standby mode. – Check the safety loop is
the sensor and the unit.
– Swap the sensor with another
sensor and verify that it is working. If necessary, replace the
sensor.
– Check that the controls layout
permits accurate readings.
BMS.
– If unit cannot be enabled
remotely, try enabling the unit
through the Modbus setting in the
control software.
– Check the humidier control
system.
– Limit the output capacity of
the humidier – refer to Manual
Capacity.
– Adjust the proportional and/or integral
value of the controller.
– Adjust the RH High value for the
sensor signal.
– Check the humidier control
system.
– Adjust the RH Low value for the
sensor signal.
closed, and that all burners are
operational.
Nortec GS
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73Fault Isolation
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Code
Warning Fault
– E46 Drain Check The drain pump has been active for an extended period of time without
W52 – Float Inconsistent On unit startup the oat levels do not rise logically from low water level L1
W57 – Startup Code Activation code required to use the humidier.
– E84 Driver Board Fault No communication between the integrated control board and the driver
Message Probable Cause Corrective Action(s)
the water level changing in the oat chamber. The unit needs to drain for
optimal performance. Fix the problem before restarting the unit.
Backpressure in the drain line may
be causing slow drain.
Loose connection. – Check the connections be-
Floats may be stuck. – Visually check that the dierent
Drain pump may be clogged. – Clean the drain pump – refer to
(red LED) to high water level L5 (yellow LED).
Excess backpressure in the steam
line.
Float level sensor may be malfunctioning.
Activation code missing. – Contact your Condair
board.
Dip switch settings are not correct. – Verify dip switch settings.
Communication cable between the
driver board and the integrated control board not connected properly.
Unspecied driver board fault. – Check that the heartbeat LED10
– Remove any blockages in the
drainage system.
tween the oat board and the
driver board, as well as the drain
pump.
LEDs on the oat board light up
as the water level in the oat
chamber changes. If necessary,
clean the oat chamber – refer
to "Cleaning the Float Chamber" on
page 61.
"Cleaning Hoses, Dual Fill Valves and
Drain Pump" on page 62.
– Check the steam line.
– Inspect all hoses and
connections.
– Clean the oat chamber – refer
to "Cleaning the Float Chamber" on
page 61.
representative.
– Make sure the RS485 cable is
connected to J15 (RS4851) on
the driver board, and J12 on the
integrated control board.
– With the unit powered up,
check that LED1 and LED10 on
the driver board are ashing.
Otherwise, contact your Condair
representative.
on the driver board is blinking.
Otherwise, contact your Condair
representative.
74 Fault Isolation
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Code
Warning Fault
– E138 Over-Temperature
W139 – No Burners Available All burners have been disabled through the control software. No burn-
– E140 Keep Warm Fault The Keep Warm function is activated, but the tank temperature has not
Message Probable Cause Corrective Action(s)
Fault
The exhaust or tank safety sensor has exceeded the safety limit. The unit
will not operate when this fault condition is active. Fix the problem rst,
then reset the over-temperature switch as described in "Resetting Fault Status"
on page 80.
Unit may be operating with incorrect
water level.
Exhaust vent may be blocked. – Make sure that the exhaust vent
Dual ll valves may not be working
properly.
Thermocouple wire may be damaged.
Excess scale build-up on the coils of
the primary heat-exchanger.
Temperature of the water supply may
be too high.
Exhaust condensate removal (on CS/
NX model) may be blocked.
ers are available for operation of the unit. The unit will not respond to a
demand until one or more burners is enabled.
Burners disabled. – Enable the burners in the control
increased in the allotted time.
Loose connection. – Check the tank temperature sen-
Burners may be disabled. – Check that no more than one
Scale build-up on the temperature
sensor.
Defective temperature sensor. CAUTION! The tank may be hot to
– Check that the oat chamber is
operating properly.
is free of obstructions.
– Refer to the troubleshooting
procedure for fault code E145.
– Visualy inspect the thermo-
couple wire for kinks or other
damage.
– Remove scale build-up – refer to
"Cleaning the Tank" on page 57.
– Check that the temperature of
the water supply. For optimal
performance, temperature must
not exceed 70 °F (21 °C).
– Check for blockages in the ex-
haust drain line in the unit.
software.
sor connection.
burner is disabled in the control
software.
CAUTION! The tank may be hot to
the touch.
– Carefully remove scale build-up
on the sensor as described in
"Cleaning the Tank" on page 57.
the touch.
– Check the tank to see if it is hot.
Then check the electrical signal
to the sensor. Replace the sensor, if defective.
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Code
Warning Fault
W141 Ignition Fail The ignition module identied has failed to ignite within the allotted time
– E142 No Burners Available All burners have experienced an ignition control module failure, and no
Message Probable Cause Corrective Action(s)
(4 minutes). The unit will index to next available burner in the sequence.
Loose wiring, or defective sparkigniter.
Gas supply problem. – Check the gas supply is open.
Faulty ignition control module. – Check the status LED on the
Incorrect gas valve adjustments. – Check if the throttle adjustment
burners are available to produce steam. The unit is unsafe to operate with
this fault condition. Fix the problem before restarting the unit.
Gas supply problem. – Check the gas supply is open.
Loose wiring, or defective sparkigniter.
Faulty ignition control module. – Check the status LED on the
– Visually check the sight port of
problematic burner.
– Check if sparking can be seen
or heard during the ignition
sequence.
– Check if the burner ignites, but
stops after 3 seconds.
– Remove and clean oxidation on
the igniter.
– Check the distance between the
'spark gap'.
– Check the spark-igniter connec-
tion. If necessary, replace the
spark-igniter.
– Check for 24 VAC at the gas
valve.
– Check the status LED on the
ignition control module – three
ashes of the red LED indicate
problem with the supply, or gas
valve, or a loose connection.
Contact your Condair representative if further assistance is
required.
ignition control module – a solid
red LED indicates an ignition
control module failure. Replace
the ignition control module, if
necessary.
on the gas valve has been
tampered.
– Check for 24 VAC at the gas
valve.
– Check the status LED on the
ignition control module – three
ashes of the red LED indicate
problem with the supply, or gas
valve, or a loose connection.
Contact your Condair representative if further assistance is
required.
– Visually check the sight port of
problematic burner – check for
a glowing red spark-igniter followed by a ame.
– Check the spark-igniter connec-
tion. If necessary, replace the
spark-igniter.
ignition control module – a solid
red LED indicates an ignition
control module failure. Replace
the ignition control module, if
necessary.
76 Fault Isolation
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Page 77
Code
Warning Fault
– E143 Gas Valve Fail The identied gas valve was energized out of sequence, or when it was
– E144 Float Level On three consecutive occasions, more than one oat level was registering
Message Probable Cause Corrective Action(s)
not expected to be energized. The unit is unsafe to operate with this fault
condition. Fix the problem before restarting the unit.
Loose connections. – Make sure that all onboard elec-
Faulty gas valve. – Check for voltage at locations
at the same time. The unit cannot operate without accurate oat level reading. Fix the problem before restarting the unit.
Floats may not be working properly. – Check the oat chamber for
Faulty oat board – Examine the oat board for
Obstructions in hoses, or hoses
plumbed incorrectly.
tronics are connected according
to the wiring diagram.
– Check the status LED on the
ignition control module – three
ashes of the red LED indicate
problem with the supply, or gas
valve, or a loose connection.
– Check connections to all ignition
control modules and gas valves.
Check for 24 VAC at location
labelled "TH" on the ignition
control module.
labelled "TH" and "V2" on the
ignition control module after the
blower has completed prepurging the system. If 24 VAC
voltage is detected at "V2" but
not at "TH", replace the gas
valve. Contact Condair to order
a replacement gas valve.
scale build-up, and clean if necessary – refer to "Cleaning the Float
Chamber" on page 61.
– Check that both oats have
equal bouyancy, as described
in "Cleaning the Float Chamber" on
page 61. Replace the oats, if
necessary.
signs of corrosion, splashed
water on it, or other damage.
Replace the oat board, if
necessary.
– Check for obstructions in the
hoses.
– Check that all hoses are
plumbed correctly.
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77Fault Isolation
Page 78
Code
Warning Fault
– E145 Fill Check Fault The dual ll valves have been active for an extended period of time without
Message Probable Cause Corrective Action(s)
the water level rising in the oat chamber. The unit will not operate without
an accurate water level reading. Fix the problem before restarting the unit.
Water supply problems. – Make sure that the water sup-
Loose wiring, or clogged strainer in
dual ll valves.
Drain pump running, or manual drain
valve open.
Floats may be stuck. – Visually check that the dierent
Fill valve relay on the driver board
not seated properly, or defective.
Defective dual ll valves. – Check for 24 VAC on the pins
Scale build-up in the drain tting. – Clean the drain tting, as
ply line is open, and there is
adequate ow and pressure.
– Check the wiring to the oat
board and the dual ll valves.
– Check the strainer in the dual ll
valves is not clogged – refer to
"Cleaning Hoses, Dual Fill Valves and
Drain Pump" on page 62.
– Visually check that the manual
drain valve is closed, and the
drain pump is not running.
LEDs on the oat board light up
as the water level in the oat
chamber changes. If necessary,
clean the oat chamber – refer
to "Cleaning the Float Chamber" on
page 61.
CAUTION! Electro-static discharge
damage to board.
– Check that LED3 (corresponding
to REL4 for the high volume ll
valve) and LED4 (corresponding to REL5 for the low volume
ll valve) on the driver board
light up when the ll valves are
supposed to be energized. If
not, check the relay(s) is seated
properly on the driver board.
– Swap the relay(s) with another
relay on the board to verify that it
is working. If necessary, replace
the relay.
of the dual ll valves. If necessary, replace the dual ll valves.
Reconnect the wires correctly.
described in "Cleaning the Tank" on
page 57.
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Code
Warning Fault
– E146 Blower Not Operating The identied blower is not operating, or registered a value below 500 rpm
W147 – Blower rpm Low The blower identied is running at a lower rpm than expected by more than
W148 – Blower rpm High The blower identied is running at a higher rpm than expected by more
Message Probable Cause Corrective Action(s)
while being energized. The unit is unsafe to operate with this fault condition. Fix the problem before restarting the unit.
Loose connections. – Check the PWM (pulse width
Blower relay on driver board may be
defective.
Blower feedback signal may be
missing.
Restrictions at blower, or damaged
blower.
Main power to blower relay damaged. – Visually inspect the connections
Worn out blower. – The blower speed may decrease
the allowable tolerance. The unit will continue monitoring the blower rpm
and display this warning if the rpm remains low.
Loose connections. – Check the PWM and power con-
Low voltage. – Visually check that LED7 (cor-
Restrictions at blower, or damaged
blower.
Worn out blower. – The blower speed may decrease
than the allowable tolerance. The unit will continue monitoring the blower
rpm and display this warning if the rpm remains high.
Loose connection. – Check the PWM connection to
modulation) and power connection to the blower.
CAUTION! Electro-static discharge
damage to board.
– Visually check that LED7 (cor-
responding to relay REL8 for the
blower) on the driver board lights
up when the blower is supposed
to be energized. If LED7 does
not light up, the relay is faulty.
– Replace the driver board. Refer
to the GS Spare Parts List.
– Restart the unit, and check the
blower rpm in Input Diagnostics in
the control software. If the rpm
is low, contact your Condair
representative.
– Visually inspect the blower and
blower inlet for restrictions.
– Visually inspect the blower
impeller for damage. Order a replacement blower, if necessary.
between the main power.
– Visually inspect the blower
relay for damage and replace if
necessary.
due to wear. The blower is safe
to operate, but the output may
be reduced. Order a replacement blower.
nection to the blower.
responding to relay REL8 for the
blower) on the driver board lights
up when the blower is supposed
to be energized.
– Check for 120 VAC on the out-
put side of the blower relay.
– Visually inspect the blower and
blower inlet for restrictions.
due to wear. The blower is safe
to operate, but the output may
be reduced. Order a replacement blower.
the blower.
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
79Fault Isolation
Page 80
Code
Warning Fault
W149 E149 AP Open Warn The air proving switch identied has opened while the unit was operating
Message Probable Cause Corrective Action(s)
or during blower start-up. The unit will interrupt operation and retry three
times. After a third attempt a fault message is generated. The unit is unsafe
to operate with this fault condition. Fix the problem before restarting the
unit.
Blockage in the air intake vent or air
intake terminal.
Pressure tubes not connected, or
loose wiring.
Defective air proving switch. – Check that the air proving switch
Exhaust condensate removal (on CS/
NX model) may be blocked.
– Visually inspect the air intake
vent and air intake terminal for
blockages.
– Check the pressure tube con-
nections are attached securely.
– Check the wiring between the air
proving switch(es) and connecctor J2 on the driver board. With
demand o and the blower not
operating, check for 24 VAC at
pins 1 and 2 on connector J2.
remains closed during operation
of the blower. Check for suction
in the pressure tubes. If the air
proving switch does not close, it
may be defective and must be
replaced.
– Check for blockages in the ex-
haust drain line in the unit.
7.5 Resetting Fault Status
With the exception of the over-temperature fault (see below), the following procedure should be used to
reset all other fault conditions including the ignition control module safety lockout.
Reset the "Fault" status as follows:
1. Correct the cause of the problem.
2. Set the On/O button to the O position.
3. Wait approximately for 5 seconds, then set the On/O button to the On position.
If the alarm condition has been eliminated, the fault message is automatically reset; otherwise the
fault message reappears after a short while.
Resetting Over-Temperature Fault
Reset the over-temperature "Fault" status as follows:
1. Correct the cause of the problem.
2. Wait for the unit to cool down.
3. Press the reset button on the over-temperture switch.
4. Set the on/o button to the O position. Wait for approximately 5 seconds.
5. Set the on/o button to the On position. If the alarm condition has been eliminated, the fault message
is automatically reset. Otherwise, the fault message reappears after a short while.
80 Fault Isolation
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 81
7.6 Driver Board Layout
Figure 22 shows the components of the driver board that are referenced in Section 7.4, "Nortec GS Warning
and Fault List" of this manual.
61
J10
D31
C40
R44
R48
D30
C39
R43
R47
U6
14
J18
EXT1
R35
D24
R34
R30
R29
C4
D1
R9
R16
R1
TP3
Figure 22:
D29
R38
R40
C38
C44
C42
TP20
C43
C13
C35
C34
C29
C20
C30
U10
L2
C62
TP27
C55
U5
R94
R95
C59
S1
Fa
D2
C2
ZD2
R53
R13
R2
15141415621411 42
J1
R37
R39
C37
R42
C41
R46
T2
C33
U2
R26
C27
TP16
TP28
C23
C78
R98
D3
ZD3
R3
TP7
C83
FLOAT
R52
R50
TP22
C31
TP17
U1
C24
C3
R54
R20
TP32
TP19
TP21
TP18
R27
C32
TP11
C28
TP12
XT1
U7 U9
ZD4
C79
T1
LED10
C25
C80
J7
Nortec GS Driver Board Layout
D10
C8
D17
C15
C77
R55
R63
D28
R49
R51
R33
LED1
C26
R25
TP15
TP14
DIGI_INPUTS
TP33
U14
R41
U13
R92
R90
R45
R89
R91
C76
C75
10V 24V
D12
JP2
C10
R32
D48
J4
R23
D25
LED5
R24
TP13
D47
TP10
LED4
D46
LED3
C81
R64
PWM1
R62
R69
R65
J8
15
J3
C14
26
D13
C11
TP5
R14
R11
C18
R18
TP8
D15
D19
D22
REL6
REL5
REL4
C82
R85
PWM2
D16
Fb
R15
C22
TP9
R22
D23
R12
TP6
C19
R19
D20
R87
R88
C21
R21
U12
C12
FILL_1_2_3
PMP_FRE_DRN_BLOWER
REL10
D52
LED9
C66
R74
C65
R73
C64
R72
TP4
REL9
LED8
D51
REL8
D50
LED7
REL7
LED6
D49
C9
D18
R93
D11
R10
C17
R17
J11
17
C52
J14
28
D44
D42
C70
R78
C69
R77
C68
R76
C67
R75
C74
R56
D32
EXT1
U11
C72
U8
C71
C73
D53
C51
R31
R82
0
TP3
NTC
J9
J12
R59
C61
C58
POWER SUPPLYJ17
12
24Vout
C45
U3
LED12
D39
LED11
D38
L1
C57
LED2
C6
R6
TP1
R5
C5
C53
13
RS485-2
J16
D37
C47
IGNITION2
J6
D36
C46
IGNITION1
J5
D9
D6
D5
D8
A/P SWITCH
J2
REL1
TP25
L3
C54
3
1
3
1
3
1
Fc
13
RS485-1
J13
TP23
J15
R67
R61
C50
TP24
C48
D41
R86
REL3
R66
R60
C49
C36
D40
R68
REL2
TP29
R8
C7
TP2
R7
U4
C16
JP1
R97
R96
1 2 3
D7
D4
R71
D43
GS Driver 2580143
7.7 Integrated Control Board Layout
Figure 23 shows the components of the integrated control board that are referenced in Section 7.4, "Nortec
GS Warning and Fault List" of this manual.
J2
RFB
–
J3
ACC.
Modbus/ BACnet MSTP
J6
JP4 JP8
SIM Card
–
GND
+
Linkup
J10
–
GND
+
+
J12
JP11
JP7
GND
24 V
GND
J15J16
J14
CR2032
Battery
J17
Display
J18
Display
RDTD
GND
Comm. Port
J19
5 V
3.3 V
J21
ETHERNET
USB
J23
J22
LED
Nortec GS
Figure 23:
Integrated Control Board Layout
2583701_C_EN_1812_Nortec-GS_OM
81Fault Isolation
Page 82
8 Wiring Diagrams
Legend:
Wire Colors
R - Red
W - White
Bk - Black
Bl - Blue
Br - Brown
O - Orange
Y - Yellow
Gr - Green
Gr/Y - Green & Yellow
Float Board
J1
Bk
WRGrBr
S
Fill 1
S
Fill 2
3 or 4-Burner
Units Only
Air Pressure
Switches
CONTROL SIGNAL
CONNECTIONS
24 VAC
Security Loop
Low voltage
terminal strip
1 2 3 4 5 6 7 8 9
YR
12
S1
ON CTS
Gr
W
Br
J1
R
float
Bk
R
W
J7
Bk
pwm1
Gr
R
W
J8
V2
pwm2
J11
ext
J9
ntc
J12
power
J17
fill 1,2,3
JP1
a/p
J2 J5
R
Bk
Gas Valve1
Spark
Igniter
DRIVER
BOARD #1
ignition1
Bk
Bk
Gr
R
Bk
Bl
W
Gr/Y
Y
R
Br
Gr/Y
RWBl
V1
TH
GND
Ignition
Module 1
+10 VDC
CH 1
GND
CH 2
RRBk
R
Y
Gr/Y
Gr/Y
J10
JP2
Bk
R
J3
digi inputs
R
R
J14
pmp_fre
R
drn_blower
J13
24Vout
J15
RS485-1
J16
ignition2
RS485-2
J6
WR
WR
Br
Gr/Y
R
WBl
V1
TH
GND
Ignition
Module 2
For GS 23, 45, 90 models
see Note 1
FTBD
GND
EXTERNAL
INTERNAL
Y
R
Gr
R
R
O
Bk
Bk
Bk
Gr
Bk
R
Bk
Gr
R
Bk
Gr
M
M
NO
Unit ON
Drain Valve
(optional)
Drain
Pump
Tank
Temp
Gas Valve2
V2
Spark
2-Burner
Igniter
Units Only
NC
NC
NO
NO
COM
COM
COMNOCOM
Service
Error
Steam
Remote Fault PCB
Stack
Hi-Limit
Tank
Hi-Limit
Note 1
For GS 23, 45, 90 models
rectifier is required for
each gas valve.
Br
_
Gr/Y
W Bl
R
V1
TH
GND
Ignition
Module
R
Rectifier
+
Bk
V2
On/Off
Switch
2
4
J17
1
3
SIM
card
battery
INTEGRATED
CONTROL
BOARD
display
display
J18
LED
J22
2-Burner
Units Only
6 A
R
S
Gr/Y
ACC
J1
JP4
Modbus
JP7
Linkup
JP8
JP11
J12
J14
comm port
ethernetUSB
J23 J21
U
U
Gr
Bk
W
R
1
Gr
Bk
W
R
J10
J16
J19
EXTERNAL
INTERNAL
Transformer
24V
RFB
J2
J3
J6
J15
U
U
PS PWM
GND
HS out
PS +
PS PWM
GND
HS out
PS +
1
PRIMARY VOLTAGE
CONNECTION
Br
R
Bk
Gr
Gr
Bk
Blower 1
L1
M
L2
Blower 2
L1
M
L2
L
Blower
Relay
R
Bk
Gr/Y
N
Gr/Y
Bl
8
5162
3
7
4
Bl
Br
Gr/Y
Figure 24:
JP4 Jumper, for activating the termination resistor for Modbus or BACnet MSTP network.
J6 Connector, Modbus (RS485 interface)
JP7 Jumper, for activating Modbus or BACnet MSTP communication via connector J6.
JP8 Termination, Linkup system
J10 Connector, Linkup
82 Wiring Diagrams
B
3 or 4-Burner
Units Only
Continued on
next wiring diagram
3 or 4-Burner
Units Only
Continued on
next wiring diagram
A
3 or 4-Burner
Units Only
Continued on
next wiring diagram
Wiring Diagram - Nortec GS 50/100/150/200/300/450/600
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
3 or 4-Burner
Units Only
Continued on
next wiring diagram
DC
Page 83
Figure 25 shows the supplementary wiring diagram for the Nortec GS 450/600. Connections are carried
Y
over from Figure 24 on page 82.
Legend:
Wire Colors
R - Red
W - White
Bk - Black
Bl - Blue
Br - Brown
O - Orange
- Yellow
Gr - Green
Gr/Y - Green & Yellow
12
Continued from
previous wiring diagram
C D
Continued from
previous wiring diagram
AB
Continued from
previous wiring diagram
S1
ON CTS
WR
J14
pmp_fre
drn_blower
ignition2
J10
JP2
Blower 3
J3
digi inputs
R
R
J13
24Vout
R
J15
Bk
RS485-1
Gr
J16
RS485-2
J6
WR
Br
R
WBl
TH
GND
Ignition
Module 4
Gas Valve4
V1
V2
Spark
4-Burner
Igniter
Units Only
Gr/Y
L1
Gr
PS -
Bk
PWM
GND
W
HS out
R
PS +
1
L2
Blower 4
L1
Gr
PS -
Bk
PWM
GND
W
HS out
R
PS +
1
L2
Gr/Y
M
Gr/Y
M
4-Burner
Units Only
J1
float
R
W
J7
Bk
pwm1
Gr
R
W
J8
Bk
Bk
S
Fill 3
R
Bk
S
Fill 4
W
Gr/Y
Gr/Y
Gr
Bl
Y
R
WBl
TH
GND
Ignition
Module 3
pwm2
DRIVER
BOARD #2
J17
fill 1,2,3
J11
ext
J9
ntc
JP1
J12
power
a/p
ignition1
J2 J5
Bk
Br
Gas Valve3
V1
V2
Spark
Igniter
Nortec GS
Figure 25:
Wiring Diagram - Nortec GS 450/600
2583701_C_EN_1812_Nortec-GS_OM
83Wiring Diagrams
Page 84
9 Decommissioning
9.1 General
If the Nortec GS humidier needs to be removed from service (for disposal or long-term storage), strictly
follow all instructions in this chapter.
Personnel Qualications
Decommissioning of the Nortec GS humidier must only be performed by a qualied service technician
authorized by the customer. It is the customer's responsibility to verify qualications of the personnel.
Safety
Decommissioning of the Nortec GS humidier will require personnel to access the inside of the control
and plumbing cabinets in the humidier, which may expose personnel and equipment to the hazards
described below.
DANGER!
Risk of re or explosion!
The Nortec GS is a gas-red humidier. Improper decommissioning can cause an explosion,
re or other hazards that can cause serious injury, death or property damage.
Any work on the gas system must only be performed by a qualied installer, service agency or your
local gas supplier.
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 re department.
DANGER!
Risk of electric shock!
The Nortec GS humidier 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: Shut down the unit as described in "Shutting Down" on page 48 before proceeding.
WARNING!
Risk of severe burns from contact with hot water or hot steam vapors!
The water in the tank in the humidier can be up to 212 °F (100 °C). Contact with the hot water or hot steam vapors can result in severe burns.
Prevention: Shut down the unit as described in "Shutting Down" on page 48 and wait for the unit to
cool down before proceeding.
84 Decommissioning
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 85
WARNING!
Risk of severe burns from contact with hot surfaces!
Components of the stream system may reach 212 °F (100 °C) during operation. Contact with
the hot surfaces can result in severe burns.
Prevention: Avoid touching any components in the plumbing cabinet until the unit has cooled down
to room temperature.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidier 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.
9.2 Removal from Service for Disposal or Long-term Storage
Remove the Nortec GS humidier from service (for disposal or long-term storage) as follows:
1. Drain the tank, and shut down the humidier as described in "Shutting Down" on page 48. Follow all
safety precautions.
2. Disconnect the gas connection to the humidier.
3. Disconnect and remove the power supply to the Nortec GS humidier. Refer to "Wiring Diagrams" on
page 82.
4. Disconnect and remove the control signal inputs to the humidier.
5. Disconnect the steam and condensate lines, and empty out all uids.
6. Disconnect the water and drain connections to the humidier.
7. Disconnect and remove the intake and exhaust vents.
8. Remove the humidier from its mounting surface.
9. If the Nortec GS humidier is to be put into long-term storage, store the humidier in its original
packaging inside a protected area that meets the following requirements:
• Room temperature: 41 to 104 °F (5 to 40 °C)
• Room humidity: 10 to 75% RH
10. If the Nortec GS humidier is to be disposed o, refer to "Disposal/Recycling".
9.3 Disposal/Recycling
The Nortec GS humidier should not be disposed o in domestic waste, and should only be disposed
o in accordance with local regulations at authorized collection facilities.
If you have any questions, contact the appropriate local authorities or your local Condair representative.
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
85Decommissioning
Page 86
10 Product Specications
10.1 Performance Data
Nortec GS
Model
GS 50-CS 12,400 (3.6) 13,000 (3.8) 62,000 (18.2) 62,000 (18.2) 10-50 (4.5-23)
GS 50-NX 13,000 (3.8) – 65,000 (19.0) – 10-50 (4.6-23)
GS 100-CS 24,800 (7.3) 24,800 (7.3) 124,000 (36.3) 124,000 (36.3) 20-100 (9-45)
GS 100-NX 26,000 (7.6) – 120,000 (35.2) – 20-100 (9-45)
GS 150-CS 37,200 (10.9) 37,200 (10.9) 186,000 (54.5) 186,000 (54.5) 30-150 (13.6-68)
GS 150-NX 39,000 (11.4) – 187,500 (55.0) – 30-150 (13.6-68)
GS 200-CS 24,800 (7.3) 24,800 (7.3) 248,000 (72.7) 248,000 (72.7) 20-200 (9-91)
GS 200-NX 26,000 (7.6) – 240,000 (70.3) – 20-200 (9-91)
GS 300-CS 37,200 (10.9) 37,200 (10.9) 372,000 (109.0) 372,000 (109.0) 30-300 (13.6-136)
GS 300-NX 39,000 (11.4) – 375,000 (109.9) – 30-300 (13.6-136)
GS 450-CS 37,200 (10.9) 37,200 (10.9) 558,000 (163.5) 558,000 (163.5) 30-450 (13.6-204)
GS 450-NX 39,000 (11.4) – 562,500 (164.9) – 30-450 (13.6-204)
GS 600-CS 37,200 (10.9) 37,200 (10.9) 744,000 (218.0) 744,000 (218.0) 30-600 (13.6-272)
GS 600-NX 39,000 (11.4) – 750,000 (219.8) – 30-600 (13.6-272)
Natural Gas
BTUh (kW)
10.2 Operating Data
Minimum Input Maximum Input
Propane
BTUh (kW)
Natural Gas
BTUh (kW)
BTUh (kW)
Propane
Min./Max. Steam
Capacity
lb/h (kg/h)
Control Signal Input Type:
Active 0-5 VDC, 1-5 VDC, 0-10 VDC, 2-10 VDC, 0-20 VDC, 0-16 VDC, 3.2-16 VDC,
Passive 135-10 kΩ ohmic humidity sensor
On/O control <2.5 VDC O
Digital inputs (via Modbus, BACnet IP/
MSTP slave)
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 backpres-
sure)
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)
0-20 mADC, 4-20 mADC
2.5-20 VDC On
BACnet IP, BACnet MSTP Slave, Modbus, LonWorks (Option), BACnet MSTP
BTL-Certied (Option), BACnet IP BTL-Certied (Option)
6 in H2O (1.49 kPa) compact unit
10 in H2O (2.49 kPa) full-size unit
86 Product Specications
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 87
Water Supply:
Water pressure (regulated) 30-80 psig (207-550 kPa)
Flow rate 2.6 gpm (10 L/min) for GS 50-300, 5.3 gpm (20 L/min) for GS 450/600
Water temperature 34-59 °F (1-15 °C) recommended; maximum 77 °F (25 °C)
Water quality Cold potable water ltered to 5 μm (optional), hardness of 0-256 ppm, pH level
Drain Water:
Drain water temperature 140 °F (60 °C) maximum
Drainage capacity 5.3 gpm (20 L/min)
Power:
Maximum current draw 15 A
10.3 Size and Weight
between 5-8 and chloride content 0-50 ppm.
Nortec GS
Model
GS 50-CS
GS 50-NX
GS 100-CS
GS 100-NX
GS 150-CS
GS 150-NX
GS 200-CS
GS 200-NX
GS 300-CS
GS 300-NX
GS 450-CS
GS 450-NX
GS 600-CS
GS 600-NX
Weight
Net
lb (kg)
190 (86.2) 340 (154.2)
210 (95.3)
320 (145.1)
480 (217.7) 775 (351.5)
480 (217.7) 800 (362.8)
800 (362.9) 1200 (544.3)
910 (412.8) 1550 (703.1)
Operating
lb (kg)
365 (165.6)
500 (226.8)
Size – H × W × D
in (mm)
43.4 × 23.5 × 21.2
(1102 × 598 × 539)
55.5 × 27 × 27.7
(1410 × 684 × 705)
55.5 × 37.8 × 27.7
(1410 × 960 × 705)
55.5 × 62.2 × 27.7
(1410 × 1580 × 705)
55.5 × 73.2 × 27.7
(1410 × 1859 × 705)
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
87Product Specications
Page 88
A Appendix
A.1 Torque Values
Figure A1 shows the hardware in the Nortec GS humidier that MUST be torqued to the values shown in
Table A1 on page A-89.
10
1
8
7
6
Figure A1:
9
1
5
4
3
2
Nortec GS Hardware to be Torqued
88 Appendix-A
1 Bolt, M6×12, ange-head (qty. 4)
2 Stud, M6x30 (Bolt, M6×16, hex-head, for older units)
(qty. 4)
3 Bolt, M6×12, hex-head (qty. 4)
4 Bolt, M8×25, hex-head (qty. 8)
5 Bolt, M8×25, hex-head (qty. 1)
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
6 Bolt, M6×16, hex-head (qty. 1)
7 Bolt, M6×14, hex-head (qty. 9)
8 Bolt, M6×10, socket-head (qty. 14)
9 Nut, M5, hex-head (qty. 4)
10 Bolt, M5×16, hex-head (qty. 4)
Page 89
Table A1: Nortec GS Standard Torque Values
M6x40
M8x25
M8x25
M6x40
M6x40
M8x25
M6x40
M8x25
M8x25
M8x25
Figure A1
Item
Number
1
2
3
4
5
6
7
8
9
10
Fastener and Location Quantity
Bolt, M6×12, ange-head,
stainless steel – secondary
heat-exchanger/exhaust ange
bolts
Stud, M6×30 and serrated
ange nut (replace the M6x16
bolts in older units) – primary
heat-exchanger bottom ange
bolts
Bolt, M6×12, hex-head, stainless steel – drain tting ange
bolts
Bolt, M8×25, hex-head, stainless steel – tank cover side and
bottom bolts
Bolt, M8×25, hex-head, stainless steel – tank cover top bolt
Bolt, M6×40, hex-head, stainless steel – tank cover top
bracket bolt
Bolt, M6×14, hex-head, stainless steel – burner ange bolts9per burner
Bolt, M6×10, socket-head,
stainless steel – primary heatexchanger top ange bolts
Nut, M5, hex-head, galvanized
steel – blower tube
Bolt, M5×16, hex-head, galvanized steel – blower tube
4
per ange
4
per heat-
exchanger
4
per unit
8-10
per door
1-3
per door
1-3
per door
14
per heat-
exchanger
4
per burner
4
per blower
Anti-Seize
Lubricant*
– 15 in·lb (1.7 N·m) 15 in·lb (1.7 N·m)
– 10 in·lb (1.2 N·m) 10 in·lb (1.2 N·m)
– 10 in·lb (1.2 N·m) 10 in·lb (1.2 N·m)
* Apply nickel anti-seize lubricant (Loctite® LB 771™ or equivalent) to fastener.
Torque Re-torque
Tighten until metal to
metal contact occurs.
DO NOT EXCEED
130 in·lb (14.7 N·m)
30 in·lb (3.5 N·m)
20 in·lb (2.3 N·m)
then secure jam nut
10 in·lb (1.2 N·m)
then secure jam nut
35 in·lb (3.9 N·m) 35 in·lb (3.9 N·m)
4 in·lb (0.5 N·m) 4 in·lb (0.5 N·m)
110 in·lb (12.4 N·m) 110 in·lb (12.4 N·m)
DO NOT EXCEED
130 in·lb (14.7 N·m)
Do not Re-Torque
(Inside tank)
10 in·lb (1.2 N·m)
10 in·lb (1.2 N·m)
A.1.1 Torque Sequences
M8x25
1
2
9
M8x25
3
M8x25
6
M8x25
12
M8x25
8
7
Figure A2: Tank Cleanout Door Torque Sequence. Small and large doors shown.
3
11
M8x25
M8x25
5
M8x25
4
10
M8x25
M8x25M8x25
13
M8x25
M8x25
7
M8x25
10
16
M8x25
4
M8x25
18M8x25 12
1
2
M8x25
11
5
6
M8x25
17
15
9
8
14
M8x25
Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
89Appendix-A
Page 90
7
M6x14
M6x106M6x10
M6x1013M6x10
M6x103M6x10
M6x10
M6x10
M6x10
M6x10
M6x10
M6x14
5
8
M6x14
3
M6x14
1
M6x14
9
M6x14
M6x40
Figure A3: Burner Assembly Torque Sequence.
14
7
M6x10
1
M6x10
4
M6x14
2
M6x14
10
6
5
M6x14
12
10
2
Figure A4: Primary Heat Exchanger Torque Sequence.
9
M6x10
8
11
4
90 Appendix-A
2583701_C_EN_1812_Nortec-GS_OM Nortec GS
Page 91
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 humidier 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 ocer of THE COMPANY.
THE COMPANY’s parts or materials that are considered consumables, including but not limited to: cylinders,
lters, 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 eect 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 humidier, supply lines, drain lines, or quality of the water used.
THE COMPANY retains the right to change the design, specication 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 humidier.
Extended Warranty
Extended warranties are available to purchase under the conditions listed above.
Page 92
CONSULTING, SALES AND SERVICE:
U.S.A.
835 Commerce Park Drive
Ogdensburg, NY 1366-2209
CANADA
2740 Fenton Road
Ottawa, ON, K1T 3T7
Tel: 1.866.667.8321
Fax: 613.822.7964
Email: na.info@condair.com
Website: www.condair.com
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