Condair 2596646-A Nortec GS Series Operating instructions

Condair 2596646-A Nortec GS Series Operating instructions
2596646_A_EN_2001_Nortec-GS_OM
NORTEC
OPERATION AND
MAINTENANCE MANUAL
Gas-fired Steam Humidifier
Nortec GS
Series II
Humidification and Evaporative Cooling
Thank you for choosing Condair
Installation date (DD/MM/YYYY):
Commissioning date (DD/MM/YYYY):
Site:
Model:
Serial number:
Proprietary Notice
This document and the information disclosed herein are proprietary data of Condair Ltd. Neither this document, nor
the information contained herein shall be reproduced, used, or disclosed to others without the written authorization of
Condair Ltd., except to the extent required for installation, operation or maintenance of the customer's equipment.
Liability Notice
Condair Ltd. does not accept any liability due to incorrect installation, maintenance or operation of the equipment,
or due to the use of parts/components/equipment that are not authorized by Condair Ltd..
Copyright Notice
© Condair Ltd., All rights reserved.
Technical modifications reserved.
Contents
1
1.1
Introduction
General
5
5
2
For Your Safety
6
3
3.1
3.2
Product Overview
General Description
Functional Description
10
10
12
4
4.1
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.6.1
4.2.6.2
4.2.6.3
4.2.6.4
4.3
4.3.1
4.3.2
Operator Interface
Controls
Control Software
Home Screen
Operating Status
Maintenance and Fault Status
Help
System Information
Main Menu
Configuration Menu
Service Menu
Setpoint
Administrator Menu
Software Configuration
Configuring the Control Software
Configuring for Multi-Unit Operation
14
14
14
14
15
16
16
16
20
20
34
36
36
38
38
38
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
Operation
General
Operating Procedures
Filling the System
Ignition Safety Shutoff Test
Starting the Humidifier
Remote Monitoring
Inspections During Operation
Manually Initiate Tank Draining
Full Tank Blowdown
Shutting Down
Restarting After Shutdown
40
40
40
40
40
41
42
42
43
43
44
44
6
6.1
6.2
6.3
6.4
6.4.1
6.5
6.5.1
6.5.2
Maintenance
General
Mandatory Maintenance Schedule
List of Consumables
Management of Scale and Chloride Levels
Adjusting Blowdown Settings
Maintenance Procedures
Removal and Installation of Access Panels
Cleaning the Tank
45
45
46
47
47
48
49
49
50
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Contents 3
6.5.3
6.5.4
6.5.5
6.5.6
6.5.7
6.5.8
6.5.9
6.5.10
Cleaning the Secondary Heat-exchanger
Cleaning the Float Chamber
Cleaning Hoses, Dual Fill Valves and Drain Pump
Cleaning the Burner Assembly
Replacing Backup Battery
Replacing Internal Fuse
Resetting Service Reminder
Installing Software Updates
51
52
53
55
56
57
57
57
7
7.1
7.2
7.3
7.4
7.5
Fault Isolation
General
Fault Indication
General Troubleshooting
Warning and Fault List
Resetting Fault Status
58
58
58
58
59
66
8
8.1
8.2
8.3
Decommissioning
General
Removal from Service for Disposal or Long-term Storage
Disposal/Recycling
67
67
67
67
9
9.1
9.2
Performance and Operating Data
Performance Data
Operating Data
68
68
68
4 Contents
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
1
Introduction
Thank you for purchasing the Nortec GS humidifier.
The Nortec GS humidifier incorporates the latest technical advances and meets all recognized safety
standards. Improper use of the Nortec GS humidifier may result in danger to the user or third parties,
and/or damage to property.
To ensure proper operation of the Nortec GS humidifier, observe and comply with all information and
safety instructions contained in this manual, as well as all relevant documentation of components of the
installed humidification system. Comply with all local and regional regulations dealing with gas, combustion air, flue gases, water, steam and electrical systems.
If you have additional questions, contact your Condair representative. They will be glad to assist you.
1.1
General
Limitations
The subject of this manual is the Nortec GS humidifier. The various options and accessories may only be
described in-so-far as is necessary for proper installation and operation of the equipment. Additional 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 humidifier, and is intended
for well trained personnel who are suitably qualified for their respective tasks.
Symbols Used in This Manual
CAUTION!
The catchword "CAUTION" with the general caution symbol is used to provide safety instructions that, if neglected, may cause
damage and/or malfunction of the unit or damage to property.
WARNING!
The catchword "WARNING" with the general warning symbol is used to provide safety instructions that, if neglected, may cause
injury to personnel. Other specific warning symbols may also be used in place of the general symbol.
DANGER!
The catchword "DANGER" with the general danger symbol is used to provide safety instructions that, if neglected, may cause
severe injury to personnel or even death. Other specific danger symbols may also be used in place of the general symbol.
Other Related Publications
This manual is supplemented by other publications such as the 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.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Introduction 5
2
For Your Safety
General
Every person who is tasked with the operation and maintenance of the Nortec GS humidifier must read
and understand this manual before performing any work on the unit. Knowing and understanding the
contents of the Installation Manual, and the Operation and Maintenance Manual is a basic requirement
for protecting personnel against any kind of danger, preventing faulty operation, and operating the unit
safely and correctly.
All labels, signs and markings applied to the Nortec GS humidifier must be observed and kept in a
readable state.
Personnel Qualifications
All procedures described in this manual must only be performed by personnel who are adequately qualified, well trained and are authorized by the customer.
For safety and warranty reasons, any activity beyond the scope of this manual must only be performed
by qualified personnel authorized by Condair.
All personnel working with the Nortec GS humidifier must be familiar with, and comply with the appropriate regulations on workplace safety and prevention of accidents.
Intended Use
The humidifier is intended exclusively for air humidification using a Condair-approved steam distributor
within specified operating conditions (refer to "Operating Data" on page 68 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 humidifier is mains powered. Live parts may be exposed when the access
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Before performing any work inside the Nortec GS humidifier shut down the humidifier
properly and secure it against accidental power-up as described in "Shutting Down" on page 44.
WARNING!
Wiring errors can cause improper and dangerous operation of the humidifier!
Prevention: Tag all wires before disconnecting them. Reconnect all wires correctly after servicing,
and check the unit functions properly.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidifier are sensitive to electrostatic discharge (ESD).
Prevention: Take appropriate measures to protect the electronic components inside the unit against
damage caused by electrostatic discharge (ESD).
6 For Your Safety
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
DANGER!
Risk of fire or explosion!
The Nortec GS is a gas-fired humidifier. Improper installation, adjustment, alteration, service,
maintenance or use can cause carbon monoxide poisoning, explosion, fire or other hazards
that can cause serious injury, death or property damage.
If over-heating occurs or if the gas fails to shut off: Shut off the gas supply at the manual gas
shutoff valve before shutting off the electrical power supply.
DO NOT spray aerosols in the vicinity of this appliance while it is in operation.
DO NOT place articles on or against this appliance.
DO NOT use or store flammable materials in or near this appliance.
DO NOT use this appliance if any part has been under water. Call a qualified service technician immediately to inspect and replace any part of the control system or gas control that has been
under water.
Any work on the gas system must only be performed by a qualified installer, service agency or
your local gas supplier. Use only factory-authorized and listed kits or accessories when installing or
modifying this appliance.
DO NOT store or use gasoline or other flammable vapours and liquids in the vicinity of the humidifier or any other appliance.
What to do if You Smell Gas:
DO NOT try to light any appliance.
DO NOT touch any electrical switch.
DO NOT use any phone in the building.
Leave the building immediately.
Call your gas supplier immediately from a location far away from the building with the gas leak.
Follow the gas supplier's instructions.
If you cannot reach your gas supplier, call the fire department.
WARNING!
Risk of severe burns from contact with hot surfaces, steam or hot water!
The tank may contain steam or hot water at up to 100 °C (212 °F). Contact with the hot surfaces, steam vapours or hot water can result in severe burns.
Prevention: Always 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.
WARNING!
Risk of severe burns from contact with hot steam vapours!
The Nortec GS humidifier produces hot steam vapours for humidification. Bare skin in contact with
hot steam vapours can result in severe burns.
Prevention: Never perform any work on the steam system (including the steam lines, steam distributors, etc.) while the humidifier is operating. Shut down the Nortec GS steam humidifier, as
described in "Shutting Down" on page 44 before fixing any leaks in the steam system.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
For Your Safety 7
WARNING!
Risk of severe burns from contact with hot surfaces!
The water tank, steam line and exhaust system in the Nortec GS humidifier get very hot during
operation. Bare skin in contact with hot surfaces can result in severe burns.
Prevention: Shut down the Nortec GS steam humidifier as described in "Shutting Down" on page 44
and wait for the components to cool down before performing any work on the unit. 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 43.
WARNING!
Risk of personal injury!
Prevention: Wear a safety mask and clean the burner assembly in a well ventilated area.
CAUTION!
Risk of damage to the humidifier 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.
WARNING!
Risk of fire!
DO NOT clean the sacrificial anode with any chemicals. The anode can react with acids to
create flammable hydrogen gas.
CAUTION!
Risk of damage to the humidifier 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.
DANGER!
Risk of harm to personnel or damage to property.
Operating a damaged or improperly secured humidifier presents a risk of danger to personnel or damage to property.
Prevention: Do not restart a damaged or improperly secured humidifier.
Preventing Unsafe Operation
All personnel working with the unit must immediately report to the customer any alterations to the unit
that may affect safety, and if it is suspected that the Condair GS steam humidifier cannot be operated
safely for any of the reasons listed below, shut it down immediately as described in "Shutting Down" on
page 44 and secure it against accidental power-up.
•
Humidifier is damaged
•
Electrical connections are loose or damaged
•
Humidifier is not operating properly
• Leaks in the steam system or gas supplyDO NOT modify this appliance.
Modifications are NOT permitted on the Nortec GS humidifier without the express written consent of
Condair.
Always use original Condair replacement parts and accessories available through your Condair
representative.
8 For Your Safety
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
The location of the various safety labels on the Nortec GS humidifier is shown below.
5
1
2
3
4
Figure 1: Safety Labels
1
2
3
4
5
Nortec GS
Label, gas safety warning
Label, keep cabinet closed warning
Label, installation guidelines
Label, general safety warning
Label, specification
2596646_A_EN_2001_Nortec-GS_OM
For Your Safety 9
3
Product Overview
3.1
General Description
The Nortec GS series is a completely new design of gas-fired steam humidifiers. It is designed to provide
clean steam humidification at an economical price. The Nortec GS humidifier is available in condensing
high-efficiency (CS), ultra-low NOx condensing (NX), and Mid-Temperature models in capacities ranging from 50 lb/h to 600 lb/h (23 kg/h to 260 kg/h). The CS and NX models are installed as Category IV
appliances. The MT models are installed as Category III and Category IV appliances.
The humidifier has an integrated control board that controls the humidifier, and also allows the humidifier 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 humidifiers can be set up in a "MainExtension" configuration using Condair's Linkup system to satisfy large humidification needs.
The Nortec GS humidifier comes in two housing styles – compact 50-100 lb/h (23-45 kg/h), and full-size
150-600 lb/h (65-260 kg/h). Refer to Figure 2.
5
4
3
2
1
Figure 2: Nortec GS-Series II Humidifiers
1
2
Nortec GS 50/100 (compact housing)
Nortec GS 150 (full-size housing)
3
4
Nortec GS 200/300 (full-size housing)
Nortec GS 450 (full-size housing)
5
Nortec GS 600 (full-size housing)
The table below lists the summary of major components in each GS model. Refer to on page 11.
Table 1: GS Components by Model
Quantity
Component
*
Nortec GS
50/100
Nortec GS
150
Nortec GS
200/300
Nortec GS
450
Nortec GS
600
Primary heat-exchanger
1
1
2
3
4
Secondary heat-exchanger
1*
1*
1*
2*
2*
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 flame sensor
1
1
2
3
4
Dual fill valve
1
1
1
2
2
Secondary heat-exchanger on CS and NX models only.
10 Product Overview
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
1
7
15
1
3
16
6
2
4
15
14
12
4
2
5
12
5
3
6
11
8
7
10
11
14
11
10
13
17
13
19
18
9
20
Figure 3: Humidifier Components (GS 100 and 300 shown). Door, side and top panels removed for clarity.
1
2
3
4
5
6
7
Nortec GS
Steam outlet
High limit sensor
Blower
Burner
Tank door
Gas inlet
Combustion air inlet
8
9
10
11
12
13
14
Exhaust Manifold (GS 200-600)
Float chamber
Overflow
Condensate trap (from exhaust)
Secondary heat-exchanger (CS/NX)
Drain valve
Dual fill valve
2596646_A_EN_2001_Nortec-GS_OM
15
16
17
18
19
20
Silicone tube, exhaust
Exhaust adapter
Low voltage terminal
Integrated control board
PCB board
High voltage terminal
Product Overview 11
3.2
Functional Description
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), the over-temperature switch and the external vent, 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 Operating" appears. When the
functions of the safety systems have been verified successfully, the gas valve(s) opens and the gasair 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.
If a flame is not sensed by the flame sensor(s), the above sequence is repeated after 15 seconds. The
sequence is repeated up to a maximum of three times, after which the ignition control module(s) locks
out and the fault message "Ignition Fail" appears. If a flame is sensed by the flame 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 flue 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-efficiency
model, the hot flue gases pass through the primary heat-exchanger and exit through the exhaust vent.
Water Management
The humidifier is equipped with a float chamber that monitors the water level in the tank.
The tank 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 the CS and NX model, a secondary heat-exchanger promotes higher efficencies. This is achieved by
using the heat from the exhaust to pre-heat the cold fill water entering the tank.
The float 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 float chamber and its control board consists of two
magnetic floats (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
L2 (green and red LED) — intermediate water level
L1 (red LED) — low water level
L3 (green LED) — middle water level
On initial start-up, the dual fill valves fill the tank and the float chamber. A start-up test monitors the water
level as the tank and float chamber fills, 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 float, then the main float.
2. As water fills the float chamber and reaches the L1 level, the control software performs a test to
verify proper functioning of the dual fill valves and the drain pump.
a. Water enters the float chamber via the tank. The fill valves will allow water to fill the tank and
raise the water level in the float chamber to L5.
b. The drain pump energizes to lower the water level to just below L3.
12 Product Overview
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
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 lvel does not drop below the level L3.
3. When the test is complete, the dual fill valves activate and the water level should rise to level L3.
4. If a demand signal is present, the humidifier begins the combustion sequence.
5. The drain pump and dual fill 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 floats, dual fill valves,
and the drain pump.
1,2
3
23
22
20
19
21
6
2,5
16
4
7
10
9
8
11
12
24
13
15
Nortec GS150
14
Nortec GS 200-600
17
18
7
Figure 4: General System Overview (full-size unit Nortec GS 150 shown)
1
2
3
4
5
6
7
8
Nortec GS
Humidistat, On/Off (used for humidity
control)
Humidity sensor or modulating humidistat (used for control of the space in the
return duct, high limit in the supply duct)
Duct, return air
Duct, supply air
Humidistat, On/Off, high limit (external
security loop)
Drain line, condensate (with trap)
Funnel, air gap (with optional trap)
Supply line, gas
9
10
11
12
13
14
15
16
Manual gas shutoff valve
Fitting, union
Trap, sediment
Filter, water (optional, but recommended)
Valve, water shutoff
Supply line, water
Fitting, union
Switch, disconnect, electrical fused
(dedicated)
17 Drain line
18 Drain line, exhaust condensate (CS/NX
model only)
2596646_A_EN_2001_Nortec-GS_OM
19 Steam line
20 Vent, air intake (connected to exterior
– optional)
21 Vent, exhaust vent (connected to
exterior)
22 Distributor, steam
23 Switch, air proving (external security
loop)
24 Double check valve backflow preventer
(supplied by others)
Product Overview 13
4
Operator Interface
4.1
Controls
The operator interface in the Nortec GS humidifier 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/Off switch. Refer to Table 2 for
a description of each of these elements.
1
2
3
Figure 5: Operator Interface
1
Display, touchscreen
2
Status indicator, LED
3
Switch, On/Off
DANGER!
Risk of electric shock!
The control cabinet in the humidifier has live voltage. Turning off the unit at the On/Off
switch does not shut off power to the control cabinet, which still has live voltage. Touching
live parts may cause severe injury or even death.
Prevention: Shut down the humidifier properly as described in "Shutting Down" on page 44 before accessing the control cabinet in the humidifier.
Table 2: Operator Interface Element Functions
Element
Description
Touchscreen display
Allows the user to monitor or control the Nortec GS humidifier. Refer to "Control Software" on page 14
for details of the software interface.
LED status indicator
The status LED is a multi-function LED, which lights up in different colours depending on the operating status of the humidifier.
Green: indicates that the Nortec GS humidifier is operating normally and humidifying.
Flashing Green: indicates that the Nortec GS humidifier is in standby mode.
Yellow: indicates that a warning condition is present, or the humidifier is due for maintenance.
Red: indicates that a fault condition is present, and humidification is stopped.
On/Off switch
Allows the user to turn the Nortec GS humidifier on or off.
4.2
Control Software
4.2.1
Home Screen
When the Nortec GS humidifier 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.
14 Operator Interface
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
1
10
2
3
9
4
8
7
6
5
Figure 6: Home Screen Elements
1
2
3
4.2.2
Date and time, Current
4
Operating status message – refer to
"Operating Status" on page 15 for
details.
5
Humidity control information – shows
the type of control signal and the steam
output requested.
6
Service/Warning/Fault status message –
refer to "Maintenance and Fault Status"
on page 16 for details.
Button, <Help> – access technical support help information. Refer to "Help" on
page 16 for details.
Button, <Drain> – manually initiate the
drain function. Refer to "Manually Initiate
Tank Draining" on page 43 for details.
7
Button, <About> – access the system information. Refer to "System Information"
on page 16 for details.
8 Button, <Menu> – access the Main menu.
Refer to "Main Menu" on page 20
for details.
9 Visual indication, current steam output
level
10 Model number, humidifier
Operating Status
The operating status area of the Home screen (refer to Table 3 on page 15) 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
Nortec GS
Message
Description
Humidifying
The humidifier is generating steam.
Stopped
The humidifier is stopped because a condition with a "Fault" status is active.
Disabled
The Nortec GS humidifier is disabled by the BMS (building management system).
Safety Loop
One or more contacts in the external security loop is open, so the humidifier has stopped producing steam.
Idle
The humidifier is in standby mode (no humidity demand). The humidifier will remain in this state until it receives a valid humidity demand signal.
Idle Drain
The humidifier is in standby mode (no humidity demand) and will remain in this state until a demand signal is
received, or until the Idle Drain Time has elapsed (and the Idle Drain function is active). The humidifier will drain
when Idle Drain Time has elapsed.
Idle Empty
Indicates that the tank is empty during idle.
Keep Warm
The humidifier is in standby mode, and the Keep Warm function is activated.
Filling
Indicates that the tank is being filled.
Fill check
The humidifier is performing a fill check.
Drain check
The humidifier is performing a drain check.
Draining
The humidifier is draining.
2596646_A_EN_2001_Nortec-GS_OM
Operator Interface 15
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.
Warning
Fault
4.2.3
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 humidifier will continue to produce steam when
there is a demand (unless the warning relates to a control signal).
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
humidifier 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.
The icon shown appears to the left of the maintenance/fault status message when a condition with a
"Fault" status is active. The humidifier stops producing steam.
A condition with a "Fault" status is active. Typically, these are conditions which prevent further operation of the humidifier, or conditions that can cause damage to the system. When a fault condition
occurs, the Nortec GS humidifier stops steam production immediately.
When a fault message is active, the status LED turns red in color.
Maintenance and Fault Status
The Service/Warning/Fault status area of the Home screen (refer to Table 5 on page 16) shows maintenance reminders, warning and fault status messages along with associated status icons. This field 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 field 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 ""Warning and Fault List" on page 59 .
Table 5: Maintenance/Fault Status Descriptions
4.2.4
Message
Description
Service info
No faults conditions present.
Maint. Warning
This maintenance reminder appears when the Service Interval time set in the control software
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 49.
Warning
A condition with a "Warning" status is active. Depending on the warning condition, the humidifier 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 colour.
Fault
A condition with a "Fault" status is active. The humidifier will not produce steam until the fault
condition is cleared.
In addition, the status LED turns red in colour.
Help
Touch the <Help> button on the Home screen (refer to Figure 6 on page 15) to view your local technical
support help details.
4.2.5
System Information
Select the <About> button on the Home screen (refer to Figure 6 on page 15) to view the system information for your Nortec GS humidifier. The tab structure for this selection is shown below.
16 Operator Interface
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Nortec GS
General Tab
–– Serial Number: shows the serial number, which is also shown on
the specification label.
–– Humidifier Model: shows the model number, which is also shown
on the specification label (on the right side of the humidifier).
–– Humidifier Capacity: shows the total steam output capacity of the
humidifier.
–– Software Version: shows the current version of the control software. Select the field to update the control software – refer to
"Software Settings Tab" on page 37 for details.
–– 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.
Timer Tab
–– On/Off Timers: allow you to enable or disable the On/Off timer
function to permit disabling of steam production during specified
days and times.
Configuration >Features > Operation > On/Off Timers
–– Capacity Timers: allow you to enable or disable the timer function, and configure up to eight different events with different output
capacities. The event timers for the capacity set in
Configuration > Features > Operation > Capacity Timers
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Operator Interface 17
Operational Status Tab
–– Output: shows the current actual steam output level of the
humidifier.
–– Operating Hours: shows the current accumulated number of hours
the humidifier 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 (based on average humidifier demand).
Control Status Tab
–– Demand: shows the calculated demand for the unit as a percentage of its maximum capacity.
–– Linkup: shows the humidifier's 'position' in the linkup chain. Select
to set the humidifier
–– Safety Loop: shows the current status of the On/Off 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 percentage of the maximum capacity of the unit. Select the field to set
a fixed maximum output capacity.
–– Channel 1: shows the input signal for Channel 1. If configured for
demand control, it represents the demand. If configured for RH(P/
PI), it represents sensed humidity.
–– Setpoint Channel 1: shows the current fixed humidity setpoint
value for the unit. Select the field to adjust the setpoint value. Refer
to "PI Control Parameters Tab" on page 25 for more details.
Note: This field appears only if Control Mode is set to "RH P" or "RH PI".
–– Channel 2: shows the input signal for Channel 2. If configured for
demand control, it represents the demand. If configured for RH(P/
PI), it represents sensed humidity.
Note: This field appears only if the Control Channels is set to "Dual".
–– Setpoint Channel 2: shows the high limit setpoint value for the
unit. Select the field to adjust the value.
Note: This field appears only if Control Mode is set to "RH P" or "RH
PI", and Control Channels is set to "Dual".
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Nortec GS
Features Tab
–– 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 21 for more details.
–– Drain Cool: shows the configuration setting of the drain cool function. Select the field to choose a different mode – "Off", "On" or
"Smart". Refer to the "Water Management Tab" on page 21 for more
details.
–– Float Check: shows the configuration setting of the float check
function. Select the field to enable or disable the function. Refer to
the "Operation Tab" on page 23 for more details.
–– Float Check Time: allows you to see and set the time of day when
the float check function will occur.
–– FTBD (Full Tank Blowdown): shows the configuration setting of
the full tank blowdown function. Select the field to enable or disable
the function. Refer to the "Water Management Tab" on page 21 for more
details.
–– FTBD Interval: shows how often a full tank blowdown will occur.
Refer to the "Water Management Tab" on page 21 for more details.
–– FTBD Time: shows the time of day when a full tank blowdown
will occur. Refer to the "Water Management Tab" on page 21 for more
details.
–– Time Proportioning: shows the configuration setting of the time
proportioning function. Select the field to enable or disable the
function. Refer to the "Operation Tab" on page 23 for more details.
–– Idle Mode: allows you to set the idle function of the humidifier
when it is in standby mode.
–– Idle Drain Time: allows you to set the time duration the humidifier
stays in standby mode without a demand, after which the humidifier
carries out the function specified 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
humidifier from flooding 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.
Networking Settings Tab
–– Modbus: shows Modbus communication. Options shown: Off,
Modbus/RTU, or Modbus/TCP.
–– Modbus Address: shows the Modbus address.
–– BACnet MSTP MAC: shows the MAC address assigned to the
humidifier.
–– IP Address: shows the IP address assigned to the humidifier.
Nortec GS
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Operator Interface 19
4.2.6
Main Menu
Select the <Menu> button on the Home screen to view the Main menu. The Main menu and its contents
are password-protected. Refer to Figure 7. Enter the password "0335" to access the Main menu.
Figure 7: 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 20 >
"Configuration Menu" on
page 20 >
"Features Menu" on
page 21 >
"Water Management Tab" on page 21
"Control Settings Menu"
on page 24 >
"Basic Tab" on page 24
"Operation Tab" on page 23
"PI Control Parameters Tab" on page 25
"RH Alerts Tab" on page 26
"Multi-Unit Operation Tab" on page 27
"General Menu" on
page 29 >
"Basic Tab" on page 29
"Communications Menu"
on page 30 >
"Remote Enable Tab" on page 30
"Time Date Tab" on page 29
"IP Parameters Tab" on page 30
"BMS Timeout Tab" on page 31
"Modbus Parameters Tab" on page 31
"BACnet Parameters Tab" on page 31
"Remote Fault Board" on page 33
"Service Menu" on
page 34
"Humidifier Service Tab" on page 34
"General Service Tab" on page 34
"Fault/Service History Tab" on page 35
"Diagnostics Tab" on
page 35 >
Input Diagnostics
Output Diagnostics
Relay Diagnostics
"Setpoint" on page 36
"Administrator Menu" on
page 36 >
4.2.6.1
"Password Setting Tab" on page 37
"Software Settings Tab" on page 37
Configuration Menu
>
The Configuration menu lets you configure the operation of the Nortec GS humidifier. The menu and
sub-menu items are discussed below. Refer to Table 6 on page 20 for the menu structure.
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Nortec GS
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 humidifier
when it is in standby mode.
Options:
Idle Only – the humidifier waits indefinitely
for a demand signal.
Idle Drain – the tank is drained after Idle Drain
Time elapses without demand.
Keep Warm – the water in the tank is kept
warm while in standby mode.
Factory setting:
Idle Drain
–– Idle Drain Time: allows you to set the time duration the humidifier
stays in standby mode without a demand, after which the humidifier carries out the function specified in Idle Mode.
Setting range:
1-100 h
Factory setting:
72 h
–– Float Check: allows you to enable or disable the float check function. When enabled, the humidifier performs a float check at startup and every 24 hours (without interrupting steam production if
humidifier is operating, or in standby mode), to verify that the float
system is working properly. .
Options:
On or Off
Factory setting:
On
–– Float Check Time: allows you to set the time of day when the float
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 48 for additional details.
Setting range:
1-50%
Factory setting:
25%
–– Drain Cool: allows you to enable or disable the drain water cooling
function that is used to cool down the drain water before it is discharged.
Options:
On – enable the function.
Off – disable the function.
Smart – drain water cooling happens only if
the tank is hot.
Factory setting:
On
–– DWC (Drain Water Cooling) Source: allows you to select the
water source used in drain water cooling.
Options:
Internal – use the fill valve in the unit to supply water for drain water cooling
Seperate – use an alternate source to cool
the drain water (only for DWC setting)
Factory setting:
Internal or Seperate
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Operator Interface 21
–– 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 refilled and the unit resumes normal operation.
Options:
On or Off
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 blowdowns in weighted hours (equivalent to a unit operating at 100%
output). Refer to "Adjusting Blowdown Settings" on page 48 for additional details.
Setting range:
1-200 h
Factory setting:
100 h
–– Fill Correction 1: allows you to adjust all the parameters for the
high volume fill valve(s) to compensate for valve tolerances, as
well as site-specific conditions.
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range:
Factory setting:
0.1-2.0
1.0
–– Fill Correction 2: allows you to adjust all the parameters for the
low volume fill valve(s) to compensate for valve tolerances, as well
as site-specific conditions.
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range:
Factory setting:
0.1-2.0
1.0
–– Drain Correction: allows you to adjust all the parameters used for
draining the tank and blowdowns to compensate for drain pump
flow rates and site-specific conditions.
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range:
Factory setting:
22 Operator Interface
0.5-1.5
1.0
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
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, "Off":
timer controlled capacity limitation deactivated).
–– On/Off Timers: Present status of the On/Off timer function ("On":
On/Off timer function activated, "Off": On/Off timer function deactivated). A warning message is displayed whenever the humidifier is
turned off via the On/Off timer.
–– Time Proportioning: allows you to enable or disable the time proportioning 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 Off
Factory setting:
Off
–– 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
humidifier from flooding the environment with excess humidity from
false humidity readings.
Options:
On – the humidifier remains in standby mode
until the timer elapses even if there is a new
demand signal.
Off – disables the timer function.
Factory setting:
Off
–– 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: When set to ON, terminal 9 on the Low Voltage
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/off controls required for the Exhaust in Duct feature. At any time, if the on/
off controls open and the 24V is lost on the terminal 9 input, a E153
Exhaust in Duct Fault is generated and humidification 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 Off
Off – When set to OFF, all of the above is
ignored. JP1 should be in position 1-2..
–– Factory setting:
Nortec GS
Off
2596646_A_EN_2001_Nortec-GS_OM
Operator Interface 23
Control Settings Menu
Control Settings menu is discussed below. Refer to the structure of the tabs in Table 6 on page 20.
Basic Tab
–– Source: allows you to select the source of incoming control/humidity signal to the humidifier.
Options:
Analog – signals from analog sensors or
humidistats connected to the humidifier's
low voltage terminal block.
Modbus – signals from BMS via the Modbus
communication protocol.
BACnet – signals from the BMS via the
BACnet/IP or BACnet/MSTP communication
protocol.
Factory setting:
Analog
–– Control Channels: select one or two control signals to control the
humidifier.
Options:
Single – single control signal.
Dual – two control signals (typically a control, 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 – uses the internal (proportional) controller
to interpret the sensed humidity into a demand.
RH PI – uses the internal (proportionalintegral) controller to interpret the sensed
humidity into a demand.
On/Off – control signal is from an external
On/Off 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: select the signal type of the incoming control
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, 3.216V, 0-20mA, 4-20mA
Factory setting:
0-10V
–– Signal Type Channel 2: select the signal type for the high limit
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, 3.216V, 0-20mA, 4-20mA
Factory setting:
0-10V
24 Operator Interface
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Nortec GS
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 humidifier to operate at
a fixed 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 humidifier 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:
Factory setting:
6-65%
15%
–– ITime Channel 1: allows you to set the integral time for error corrections by the internal P/PI controller.
CAUTION! Do not adjust this value unless instructed to
do so by a Condair representative.
Setting range:
Factory setting:
1-60 minutes
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 s
Factory setting:
5s
Nortec GS
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Operator Interface 25
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.
Off – disables the function.
Factory setting:
Off
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 humidification stops.
Setting range:
1-10%
Factory setting:
5%
26 Operator Interface
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Nortec GS
Multi-Unit Operation Tab
–– Linkup: allows you to enable or disable the Linkup function, which
allows up to six humidifier to connect and operate together from
a single set of control signals. It also allows you to designate the
humidifier to operate as a "Main" or "Extension" unit.
Options:
Main – designated as the main (master) unit.
Ext 1 – designated as the first extension unit.
Ext 2 – designated as the second extension
unit.
Ext 3 – designated as the third extension unit.
Ext 4 – designated as the fourth extension unit.
Ext 5 – designated as the fifth extension unit.
Off – disables Linkup. The humidifier performs as a single unit.
Factory setting:
Off
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 humidifiers in the
Linkup chain.
Setting range:
1-6
Factory setting:
1
–– Linkup Type: allows you to select the mode of operation of the
humidifier in the Linkup chain.
Options:
Parallel – the humidity demand (from a single
zone) is distributed evenly on all humidifiers
in the Linkup chain.
Series – the main unit operates to its maximum 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 humidifiers. Note: This setting is available only if Linkup Type
is set to "Series".
Options:
On or Off.
Factory setting:
On
Nortec GS
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Operator Interface 27
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 humidifiers. Note: This setting is available only if Sequence Rotation is enabled.
Setting range:
24-1000 h
Factory setting: 24 h
–– 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 s
Factory setting: 60 s
–– 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 modified 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 modified if more than one unit is
physically connected to the Linkup chain.
Refer to "Configuring for Multi-Unit Operation" on page 38 for setup
procedure.
28 Operator Interface
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Nortec GS
General Menu
Each tab under the General menu is discussed below. Refer to Table 6 on page 20 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 format 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
–– Brightness: allows you to set the brightness level of the touchscreen 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
Time Date Tab
–– 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:
24 hour
Nortec GS
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Operator Interface 29
Communications Menu
Each tab under the Communications menu is discussed below. Refer to Table 6 on page 20 for the menu
structure.
Remote Enable Tab
–– Allow Remote Disable: allows you select whether steam production by the humidifier 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 address settings. Note: After five unsuccessful
attempts to acquire the address, the system
will revert to Fixed assignment.
Fixed – manually configure the network address 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".
–– 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) address for the Nortec GS humidifier.
–– Host Name: displays the host name for the Nortec GS
humidifier.
30 Operator Interface
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Nortec GS
BMS Timeout Tab
–– BMS Timeout: allows you to set the maximum time the humidifier
will wait without any communications from the BMS network before
a timeout warning is generated.
Setting range:
1-300 s
Factory setting:
300 s
Modbus Parameters Tab
–– Modbus: allows you to enable or disable the Modbus communications protocol. Enabling or disabling Modbus always requires a
power cycle of the unit.
Options:
Off, Modbus/RTU, Modbus/TCP
Factory setting:
Modbus/RTU
The following settings appear only if Modbus is enabled.
–– Modbus Address: allows you to set the Modbus address of the
humidifier 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 Parameters Tab
–– BACnet: allows you to enable or disable the BACnet communications 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 humidifier is a slave-only BACnet MSTP device.
Off – disables BACnet communications
protocol.
Factory setting:
Off
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Operator Interface 31
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 humidifier for
communications over the BACnet/IP protocol.
–– MSTP Mode: Master or Slave
When set to BACnet MSTP the Nortec GS humidifier communicates as a BACnet slave only. BACnet master functionality
requires installation of optional hardware.
–– Baud Rate: Determines the speed of data transmission for
communication on the Modbus network. The higher the value,
the more its per second is transferred.
–– Device Description: allows you to enter a description for the
humidifier.
–– Device Location: allows you to enter the location of the
humidifier.
–– Node ID: allows you to assign a node ID to the humidifier for
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
humidifier.
Setting range:
1-65535
Factory setting: 47808
–– BACnet MSTP MAC: allows you to assign a MSTP MAC address for the humidifier.
Setting range:
128-254
Factory setting: 128
–– Foreign Device: When Foreign Device is ON, BBMD IP Port,
IP Address, and Re-Register Time appears.
A foreign device will need to connect to the BACnet network.
When a foreign device is connected, it has to communicate
through a BBMD (such as an IP router) first. You will need the
IP address, IP port, and re-register time.
–– BBMD IP Address: Appears when Foreign Device is ON. Enter
the IP address of the foreign device.
–– BBMD IP Port: Appears when Foreign Device is ON.
Factory setting: 47808
–– BBMD Re-Register Time: Appears when Foreign Device is
ON. When a foreign device is connected, a client (external is
'registered' for a fixed amount of time. To conserve 'space' in
the foreign device, the registered device is removed if the device fails to re-register within the preset time.
Factory setting: 10 s
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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 notifications prior to completing automated corrective actions (ex. fill 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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Operator Interface 33
4.2.6.2
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 7
on page 20. Refer to Table 6 on page 20 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 6 on page 15.
Humidifier Service Tab
–– Drain Tank: allows you to drain the tank. It can take up to 1 hour to
drain the tank using this function. A warning message is displayed asking you to confirm if you want to proceed with draining the tank. Refer
to "Manually Initiate Tank Draining" on page 43 for detailed instructions.
–– Clean Tank: allows you to flush the tank in preparation for maintenance. It can take up to 2 hours to flush and drain the tank using
this function. A warning message is displayed asking you to confirm
if you want to proceed.
WARNING!
Risk of severe burns from contact with hot steam
vapours or hot water!
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 h
Factory setting:
500 h
–– 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 confirm the reset.
CAUTION!
Risk of damage to equipment!
DO NOT reset the service reminder unless the scheduled
maintenance has been performed.
General Service Tab
–– 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 burner; where "n" represents the burner number (1 to 4, depending
on the number of blowers in the unit).
Options:
On or Off
Factory setting: On
34 Operator Interface
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Nortec GS
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: (requires special service code - contact your
Condair representative) allows you to reset the fault history. A warning message is displayed asking you to confirm the reset. All previously recorded fault history is erased.
–– Reset Service History: (requires special service code - contact
your Condair representative) allows you to reset the service history.
A warning message is displayed asking you to confirm 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
–– FTBD
–– Exhaust in Duct
–– Safety Loop
System Tab
–– Over Temp
–– Float Low
–– A/P 1-4
–– Tank Temp
–– Float Mid
–– G/V 1-4
–– Float High
Blowers Tab
–– Blower RPM 1-4
Counters Tab
–– Primary Valve 1 and –– Secondary Valve 1
2 Count
and 2 Count
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2596646_A_EN_2001_Nortec-GS_OM
–– Pulse Time On 1
and 2
Operator Interface 35
–– Output Diagnostics: (requires special service code - contact your Condair
representative) allows you to access 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 humidifier
will be placed in standby mode.
Output Diagnostics Tab
–– Blower Relay
–– Drain Water Cool
Valve
–– Primary Fill Valve 1
and 2
–– Secondary Fill Valve –– Freeze Valve
1 and 2
–– Blower PWM
–– Drain Pump
–– Blower RPM 1 and 2
–– Fan On
–– Ignition Mod 1-4
–– 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 humidifier will be placed in standby mode.
Remote Fault Board Tab
–– Running
4.2.6.3
–– Service
–– Fault
Setpoint
–– Setpoint: the desired conditions (RH setpoint) that the humidifier
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 24.
4.2.6.4
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 20 for the menu structure.
Each tab under the Administrator menu is discussed below.
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Nortec GS
Password Setting Tab
–– Setpoint Password: allows you to enable or disable password
control to modify setpoint values when the humidifier is configured
to operate on internal RH(P) or RH(PI) control.
Options:
Yes – requires password to modify setpoint values.
No – requires no password to modify setpoint values.
Factory setting:
Yes
–– Main Menu Password: allows you to enable or disable password
control to access the Main menu.
Options:
Yes – requires password to access the Main menu.
No – requires no password to access the Main menu.
Factory setting:
Yes
Software Updates Tab
–– Software Update: allows you to update the control software. A
warning message is displayed asking you to confirm the software
updating.
CAUTION! The control software will be corrupted if
updating is interrupted, which may render the humidifier
unusable.
Refer to "Installing Software Updates" on page 57 for detailed
instructions.
–– Driver A/B Update: allows you to update the driver board firmware
for steam cylinder A/B
Software Settings Tab
–– Load Contact Info Page: allows you to automatically insert contact
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 Definition: allows you to load a logger definition file
from a USB drive to save data (CSV file) on the USB while the unit
is functioning. A factory supplied access file is required to enable
operation. The interval between recordings can be changed from
the Engineering menu (see your Condair representative).
–– Backup Parameters to USB: saves the current value of all persistent parameters from a certain integrated controller to USB (XML
file).
–– Restore Parameters from USB (selected): loads the persistent
paramters (XML file) from USB to an integrated controller.
–– Restore Factory Defaults: Return the GS software settings to
values set at the factory.
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Operator Interface 37
4.3
Software Configuration
The Nortec GS humidifier is shipped fully configured from the factory to suit your site-specific requirements, but this can be modified as needed. This section provides the necessary instructions to reconfigure the control software.
4.3.1
Configuring 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 humidifier ("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 humidifier. Otherwise, select
an applicable digital communication protocol from the list. If your humidifier has the optional
Lonworks or BACnet (BTL) module installed, select "Modbus".
Control Channels – select the number of control channels.
Select "Dual" if controlling the humidifier 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/Off").
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/
Off" if the control signal is from an external On/Off 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".
3. 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
Configuring for Multi-Unit Operation
Set up the control software for multi-unit operation as described below. A maximum of four humidifiers
can be set up in a "Main-Extension" configuration using Condair's Linkup system to satisfy large humidification needs.
IMPORTANT! This procedure should only be used to control multiple humidifiers 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. Configure the main humidifier as described in "Configuring the Control Software" on page 38.
3. Set Linkup to "Main" on the humidifier 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 humidifiers in the Linkup chain. For example, if there is
one main unit and two extension units, then the total number of humidifier in the chain is 3.
38 Operator Interface
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Nortec GS
Linkup Type – select the mode of operation of the humidifiers in the Linkup chain ("Series" or
"Parallel").
Sequence Rotation – enable or disable the function that manages the starting order to balance the
operating hours on each steam cylinder. Note: This setting is available only if Linkup Type is set
to "Series".
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 humidifier as Ext1, Ext2, ...
Note: Each extension unit must be a unique extension number.
The humidifiers in the Linkup chain are now set up to generate steam upon humidity demand.
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Operator Interface 39
5
Operation
5.1
General
Personnel Qualifications
The Nortec GS humidifier must only be operated by personnel who are adequately qualified, well trained
and are authorized by the customer.
Safety
Observe all safety precautions described in "For Your Safety" on page 6.
5.2
Operating Procedures
5.2.1
Filling the System
Fill the Nortec GS humidifier as follows. The control software also performs the float test to ensure that
the fill system, the water level controls and the drain pump(s) are functioning properly.
1. Close the manual gas shutoff valve in the supply line.
2. Open the shutoff valve in the water supply line.
3. Set the On/Off button on the humidifier to the On position.
The control software then energizes the dual fill valve(s) and starts to fill the tank. When the water
in the float chamber(s) reaches the L1 level (red LED), the control software runs a series of tests on
the fill and drain system as described in "Water Management" on page 12. On successful completion of
the tests, the float chamber is filled to the L3 level (green LED), and the humidifier goes into standby
mode. This process can take approximately 10-30 minutes depending on the size of the unit.
4. Set the On/Off button to the Off position, and perform the "Ignition Safety Shutoff Test" described below.
5.2.2
Ignition Safety Shutoff Test
Perform the ignition safety shutoff test as described below:
1. Check that the manual gas shutoff 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.
3. Set the On/Off button to the On position. The control software runs a series of tests on the fill and
drain system, and on successful completion the humidifier goes into standby mode.
4. Set the demand signal to the humidifier 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 to purge the system. The control software then verifies the proper functioning of the
safety systems and the blowers as described in "Combustion" on page 12.
After the safety systems check is completed successfully, the ignition control module(s) is energized.
The spark-igniter(s) attempts to fire up three times to ignite the gas-air mixture. Since the gas supply
is shut off, no flame is detected by the flame sensor(s) and the gas valve(s) is de-energized. The
red LED in the ignition control module(s) flashes 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 shutoff test is successful when no gas flows to the burner(s) when the manual
gas shutoff valve is closed.
40 Operation
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Nortec GS
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 off.
5. Power cycle the humidifier to reset the fault condition.
6. Open the manual gas shutoff valve.
5.2.3
Starting the Humidifier
Start the humidifier as follows:
1. Make sure that the tank in the humidifier is filled with water – refer to "Filling the System" on page 40.
2. Make sure that the ignition safety shutdown test is completed – refer to "Ignition Safety Shutoff Test" on
page 40.
3. Check that the shutoff valve in the water supply line is open.
4. Check that the manual gas shutoff valve in the supply line is open
5. On the CS model, 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 humidifier are installed and fastened securely.
8. Set the On/Off button on the humidifier to the On position.
The control software then energizes the dual fill valve(s) and starts to fill the tank. It then performs
a series of tests to verify the function of the floats, the dual fill valves and the drain pump – refer to
"Water Management" on page 12. Upon successful completion of the tests, the combustion sequence
starts – refer to "Combustion" on page 12.
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 fill valves pulse to maintain
water at the proper level. In the CS model only, cold fill water passes through the secondary heatexchanger. Here, heat from the exhaust warms up the cold fill water entering the tank.
When the humidity demand has been satisfied (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 off.
If there is no humidity demand, the humidifier goes into standby mode to await the next humidity
demand signal.
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Operation 41
5.2.4
Remote Monitoring
The Nortec GS humidifier 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 humidifier is stopped due to a fault condition, or may be operable only for a limited period of time.
Service/Warning
Depending on the software configuration, indicates that a service
warning or a system warning/notification is active.
Unit On
The humidifier has power, and the On/Off switch is in the On
position.
The Nortec GS humidifier 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 humidifier and the humidification 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 humidifier and other system components have not shifted from their mountings, 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 humidifier for service or system warning messages.
If any irregularities (leakages, fault messages or damaged components) are found, shut down the Nortec
GS humidifier before performing service – refer to "Shutting Down" on page 44. Contact your Condair representative if assistance is required.
42 Operation
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Nortec GS
5.2.6
Manually Initiate Tank Draining
Figure 8: Drain Screens
During periods of inactivity, such as off-season or periods of low demand, drain the water from the tank.
To drain the tank in the Nortec GS humidifier, manually initiate draining as follows. Refer to Figure 8.
1. Select the <Drain> button on the Home screen. If more than one humidifier is connected in a Linkup
chain, select the appropriate tank, then press the check mark.
2. Select the <Yes> button on the confirmation screen. If humidification 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 confirm that the
tank has not been emptied fully.
Note: If necessary, set the On/Off switch to the Off position at the end of the drain cycle to prevent
the humidifier from filling the tank again.
WARNING!
Risk of severe burns from contact with hot surfaces, steam or hot water!
The tank may contain steam or hot water. Contact with the hot surfaces, steam vapours
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
The control software in the Nortec GS humidifier 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 refilled. Make sure the Drain Cool function is enabled if drain
cooling is required.
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Operation 43
5.2.8
Shutting Down
DANGER!
Risk of electric shock!
The control cabinet in the Nortec GS humidifier has live voltage. Turning off the unit at the
On/Off switch does not shut off power to the control cabinet, which is still live. Touching live
parts may cause severe injury or even death.
Prevention: Before performing any work inside the humidifier or with the humidification system,
shut down the humidifier properly as described below.
Shut down the Nortec GS humidifier as follows for maintenance, or at the end of the season:
1. Set the demand signal to the humidifier from the BMS or the humidistat at 0%. Then allow the burner(s)
to shut off 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 43.
Note: If the control software/drain valve(s) does not function properly, wait for the unit to cool down
before using the manual drain valve to empty the tank. Failure to do so may damage drain lines that
are not rated to handle 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-certified technician.
Select Service > Fault/Service History tab to access the fault history.
4. Set the On/Off button to the Off position.
5. Close the manual gas shutoff valve in the supply line.
6. Close the shutoff valve in the water supply line.
7. Disconnect the power supply to the humidifier at the external disconnect switch. To prevent accidental
power-up, lockout and tag out according to the established safety practices at your facility.
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 humidifier as follows after it has been shut down for maintenance or at the start
of the season:
1. Examine the humidifier and other system components for damage. Do not use the applicance if any
part of the humidifier has been under water. Call a qualified 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 humidifier 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 humidifier is connected to the exterior.
7. Make sure that all access panels on the humidifier are installed and fastened securely. Refer to
"Removal and Installation of Access Panels" on page 49.
8. Remove the lock and tag from the external disconnect switch, and restore power to the humidifier.
9. Open the water and gas supply to the unit.
10. Start up the humidifier as described in "Starting the Humidifier" on page 41.
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Nortec GS
6
Maintenance
6.1
General
To ensure proper performance and long operating life of the Nortec GS humidifier, Condair recommends
inspection of the appliance and installation at least once a year by a qualified service person. The amount
and type of maintenance required is generally dependent on how much the humidifier operates. The
Nortec GS humidifier 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 humidifier are negative-pressure-regulated 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 humidifier 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 46 for other maintenance requirements. Also perform
regular inspections when the unit is operating – refer to "Inspections During Operation" on page 42.
IMPORTANT! Damage caused by use of non-approved parts is not covered by warranty. Use only
original Condair replacement parts.
Personnel Qualifications
Maintenance on the Nortec GS humidifier must only be performed by well qualified and properly trained
personnel authorized by the customer. It is the customer's responsibility to verify qualifications of the
personnel.
Safety
Make sure that the Nortec GS humidifier is shut down properly as described in "Shutting Down" on page 44,
and observe all safety precautions described in "For Your Safety" on page 6 before performing any maintenance on the humidifier.
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Maintenance 45
6.2
Mandatory Maintenance Schedule
Table 8 lists the mandatory maintenance schedule for the Nortec GS humidifier.
Table 8: Mandatory Maintenance Schedule
Task
30 Days
After
Initial
Start-up
Midseason
End of
Season
(2000 hrs)
Inspect drainage.
X
X
X
Perform a visual check of the drainage system, including the air gap
funnel and drainage into the building drain.
Initiate a manual drain (refer to "Manually Initiate Tank Draining" on
page 43), and visually check that water flows freely through the
drain.
Perform water
analysis.
–
X
X
Perform a water analysis on a semi-annual basis to ensure optimal performance. Refer to "Management of Scale and Chloride Levels" on
page 47.
Inspect tank,
primary heatexchanger coils
and drain fitting
for scale buildup.
X
X
X
Adjust Blowdown Rate and FTBD Interval, as necessary, to reduce scale
build-up.
Inspect secondary heatexchanger (CS
model only) for
blockage.
–
Inspect sacrificial
anode in the
tank.
–
–
X
Inspect the anode for severe corrosion or scale build-up. Scrape off
excess scale – refer to "Cleaning the Tank" on page 50.
Clean the float
chamber.
X
X
X
Make sure that the floats move freely. Clean the float chamber –
refer to "Cleaning the Float Chamber" on page 52.
Inspect the
hoses, fill valve
and drain pump
for blockage.
–
X
X
Check the fill and drain hoses for blockage. Clean the inside of
the hoses – refer to "Cleaning Hoses, Dual Fill Valves and Drain Pump" on
page 53.
Maintenance
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 "Cleaning the Tank" on page 50.
X
X
Inspect water flow through the secondary heat-exchanger and make
sure there is not blockage. Clean, if necessary – refer to "Cleaning the
Secondary Heat-exchanger" on page 51.
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 51.
Clean the strainer in the dual fill valves – refer to "Cleaning Hoses, Dual
Fill Valves and Drain Pump" on page 53.
Clean the drain pump – refer to "Cleaning Hoses, Dual Fill Valves and Drain
Pump" on page 53.
Remove dust
build-up on the
blower housing.
–
X
X
Use an air gun to remove dust accumulation on the blower housing.
Inspect the
spark-igniter for
oxidation.
–
–
X
Clean the spark-igniter – refer to "Cleaning the Burner Assembly" on
page 55 for details.
Inspect the
exhaust vent and
terminal.
X
X
X
Check that there are no leaks in the exhaust vent, and it is not damaged 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 flue temperature
is 275-300 °F (135-149 °C) for the standard-efficiency model. Flue
temperature should be 120-140 °F (49-60 °C) for the CS model.
Inspect air
intake vent and
terminal.
46 Maintenance
–
X
X
Check the air intake vent for leaks, if used.
Make sure there is no blockage in the air intake terminal, if used.
Clean the screen on the elbow at the intake air inlet.
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
30 Days
After
Initial
Start-up
Midseason
End of
Season
(2000 hrs)
Inspect high
limit switch and
sensor.
X
X
X
Visually check that the thermocouple is attached to the exhaust vent,
and the thermocouple wires are connected properly to the switch.
Inspect condensate collection
system.
X
X
X
Check for leaks or blockages in the condensate lines throughout the
steam line and exhaust vent (if applicable).
Task
Maintenance
Make sure that the condensate traps are primed.
If a condensate neutralizer is installed, follow recommendations of the
device manufacturer.
Inspect the
mounting of the
unit.
–
–
X
Check the mounting surface on which the unit is installed is stable,
and the unit is secured properly to the mounting surface.
Inspect overall
condition of the
unit.
–
–
X
Check the unit for obvious signs of deterioration.
Inspect high temperature elbows
and hose cuffs
on the exhaust
connection(s)
–
–
X
Check the unit for obvious signs of deterioration. Check for leaks and
cracks.
Also perform regular inspections when the unit is operating – refer to "Inspections During Operation" on page 42.
6.3
List of Consumables
Table 9 shows the list of consumable items for the Nortec GS humidifier.
Table 9: Consumables
6.4
Consumable Item
Replace
Part Number
High temperature exhaust
hoses and elbows
After 4 seasons (8000 hours)
Refer to the Spare Parts List for kit part numbers.
Spark igniter
After 3 seasons (6000 hours)
Tank door gasket
After each cleaning
Sacrificial anode
When needed
All other gaskets
When removed
Management of Scale and Chloride Levels
As the humidifier 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 affect the efficiency and service life of components. Hardness of water may cause foaming and
contribute to scale build-up in the humidifier tank and float chamber, and chlorides increase the risk
of stress corrosion cracking in stainless steel components of the humidifier. All of these contribute to
reduced efficiency, 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 humidifier 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 refilled with fresh water. Weighted hours is defined as the hours equivalent to a unit
operating at 100% output.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Maintenance 47
The humidifier 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 48.
In addition to the software-controlled FTBD, a separate 24 VAC signal connected to pins "1" and "8" in
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 humidifier 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
6.4.1
Hardness
gpg (PPM)
Alkalinity
(pH)
Chloride
(PPM)
Conductivity
(µS/cm)
Silica
(PPM)
Potable
0-12 (0-205)
6.5-7.5
0-40
0-1500
0-14
Treated
0-0.99 (0-17)
7-7.5
0-40
0-100
0-1
Adjusting Blowdown Settings
Due to the wide range of water quality in different 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, and make a note of the recommended minimum blowdown rate for the hardness level of the feed water.
b. Then refer to Table 12, 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 humidifier 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 humidifier 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 reflect 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)
Recommended Minimum
Blowdown Rate (%)
Recommended Maximum
FTBD Interval (h)*
Weighted hours
0-3.51 (0-60)
12
72
3.51-7.02 (60-120)
25
72
7.02-10.50 (120-180)
40
72
50
48
10.50-20.42 (180-350)
> 20.42 (350)
48 Maintenance
Not recommended for the humidifier without treatment of the
water. Contact your local Condair representative.
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
Table 12: Blowdown and FTBD Settings Related to Chloride Levels
Feed Water
Chloride Levels (PPM)
Recommended Minimum
Blowdown Rate (%)
Recommended Maximum
FTBD Interval (h)*
Weighted hours
5
12
72
5-15
25
72
15-25
45
48
25-40
50
24
> 40
Not recommended for the humidifier without treatment of the
water. Contact your local Condair representative.
6.5
Maintenance Procedures
6.5.1
Removal and Installation of Access Panels
Removal
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, and remove the panel.
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 fixed rear panel.
Note: The Nortec GS 50/100 humidifier does not have a removable left side panel. To remove the
right side panel, slide the panel towards the front of the humidifier until the tabs at the top rear and
bottom rear of the panel clear the notches in the cabinet, then remove the panel.
Installation
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 fixed rear panel. Install the screws and fasten the panel securely.
Note: To install the right side panel in the Nortec GS 50/100 humidifier, 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 figure.
4. Make sure that the door panel fits flush 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.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Maintenance 49
4
1
5
9
3
2
8
6
7
Figure 9: Access Panels Removal and Installation (Nortec GS 300 Shown)
1
2
3
6.5.2
Screw
Panel, right side
Top tab, door panel
4
5
6
Notch, cabinet
Tab, side panel
Tab, door panel
7
8
9
Screw, captive
Door panel, control cabinet
Door panel, plumbing cabinet
Cleaning the Tank
Clean the inside of the tank, the outside of the primary heat-exchanger coils and the drain fitting as follows. Refer to Figure 10 on page 51. 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 flush and drain the tank, then shut down the
humidifier as described in "Shutting Down" on page 44.
2. Remove door panels – refer to "Removal and Installation of Access Panels" on page 49 and remove all covers.
3. Inspect all fill hoses for scale build-up or blockages. Clean or replace where necessary.
4. Remove and discard the tank gasket (Condair does NOT recommend reusing the tank gasket).
5. Use a soft-bristled or plastic brush or scraper (not wire brush, not metal) to remove all scale build-up
on the inside surfaces of the tank, all tank ports, the outside of the primary heat-exchanger coils, and
inside of the drain fitting. Carefully remove any scale build-up on the surface of the temperature sensor. Vacuum out the tank. Flush water through the drain fitting to remove any remaining sediment.
6. Rinse the inside of the tank thoroughly with clean tap water.
WARNING!
Risk of fire!
DO NOT clean the sacrificial anode with any chemicals. The anode can react with acids to
create flammable hydrogen gas.
7. Inspect the sacrificial anode on the inside of the tank cover and use a soft-bristled brush (not wire
brush) to remove scale build-up. Replace the anode, if necessary.
50 Maintenance
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
8. Install a new tank gasket and secure the tank cover to the tank. Note: The order of torquing the
bolts for the tank cover are shown in the hexagonal symbols in Figure 10 on page 51. Tighten bolts
with your fingers and torque at the end of assembly.
M6 (top of door)
Torque Values
M6x22
70 in-lb (7.91 N·m)
70 in-lb (7.91 N·m)
9. Re-start the humidifier – refer to "Restarting After Shutdown" on page 44. Check for leaks in the tank cover.
1
2
3
6
7
8
M6
4
11
5
M6x22
1
3
13
19
11
1
3
13
21
7
10
7
10
15
18
15
18
5
6
5
6
17
16
17
16
9
8
9
8
14
4
2
12
22
14
4
2
12
20
Figure 10: Tank Door Torque Sequence
1
2
3
6.5.3
Gasket
M6 nut - 70 in-lb (7.91 N·m)
Insulation
4
5
6
Tank door
7
M6x22 hex head screw - 70 in-lb (7.91 N·m) 8
Heat exchanger coils
Tank
Sacrificial anode
Cleaning the Secondary Heat-exchanger
Clean the secondary heat-exchanger and condensate trap (CS/NX model only) as follows. Refer to Figure 11.
1. Drain the tank, and shut down the humidifier as described in "Shutting Down" on page 44.
2. Remove the side panel – refer to "Removal and Installation of Access Panels" on page 49.
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. You may also refer to Figure 13.
6. Disconnect the condensate trap from the secondary heat-exchanger and flush out any scale build-up.
7. Reconnect the condensate trap, and prime the trap with water.
8. Re-start the humidifier – refer to "Restarting After Shutdown" on page 44 and check for leaks.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Maintenance 51
7
10
4
6
6
5
3*
8
2
1
7
9
10
4
5
Figure 11: Cleaning Secondary Heat-exchanger -CS/NX Model Only (compact and double unit shown)
1
2
3
6.5.4
Tank bracket
Hanger bracket
* L-bracket (for the top of the heatexchanger only)
4
5
6
7
Hose, fill valve to top of heat-exchanger 8 Exhaust adaptor
Hose, heat-exchanger to tank.
9 Screw 8-32 x 0.5 in TA and star washer
Silicone fitting elbow
10 Silicone exhaust tube
Hose clamp
Cleaning the Float Chamber
Clean the float chamber in the fill box as follows. Refer to Figure 12.
1. Shut down the humidifier as described in "Shutting Down" on page 44 and remove the side panel – refer
to "Removal and Installation of Access Panels" on page 49.
2. Remove hoses from the float chamber, and remove the float chamber by pulling on the rear tab and
lifting the float chamber upwards.
3. Open the float chamber and carefully remove the two floats. Make a note of the orientation of the floats.
4. Use a soft-bristled brush (not wire brush) to remove all scale build-up on the floats, the inside of the
float sleeve and the float chamber. Rinse with clean tap water.
5. Visually check each float for cracks or other damage. Place the two floats in a container filled with
clean water, and check that they both have equal buoyancy. If necessary, replace the floats.
6. Reassemble the float chamber, ensuring the orientation of the floats have been maintained. Reinstall
it to the bracket on the humidifier and reconnect hoses. Refer to Figure 13.
52 Maintenance
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
7. Re-start the humidifier – refer to "Restarting After Shutdown" on page 44 and ensure that the Float Check
is enabled in the features menu – refer to "Features Menu" on page 21.
8. Check for leaks.
8
2
6
3
1
4
5
7
Figure 12: Cleaning Float Chamber
1
2
3
6.5.5
Bracket, float chamber and P-trap
Float chamber
Tab, float chamber
4
5
6
Float (x2)
Seal, float chamber
Screw (x3)
7
8
Hose, to bottom of tank
Hose, to top of tank
Cleaning Hoses, Dual Fill Valves and Drain Pump
Clean the fill and drain hoses, the dual fill valves, and the drain pump as follows. Refer to Figure 13.
1. Shut down the humidifier as described in "Shutting Down" on page 44.
2. Remove the side panel – refer to "Removal and Installation of Access Panels" on page 49.
3. Loosen the clamps and remove the fill and drain hoses from the humidifier.
4. (Dual fill valves) Carefully remove the strainer in the dual fill valves. Use a soft-bristled brush (not
wire brush) and carefully remove any scale build-up on the strainer in the dual fill valves. Assemble
the dual fill valves after cleaning, taking care not to damage the strainer.
5. (Drain pump) Disconnect the fill hose from the drain adapter (9). Lift off the retaining tab/bracket
(6) and carefully pull the pump out of the adapter (do not damage the o-rings). 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.
6. (Hoses) Use a rubber mallet to knock out any scale build-up in the fill and drain hoses. Rinse the
hoses thoroughly with hot tap water before installing the hoses. Secure the hoses with clamps.
7. Re-start the humidifier – refer to "Restarting After Shutdown" on page 44. Check for leaks.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Maintenance 53
A
A
B
E
C F
D
A
C
A
B
B
F
E
D
B
3
3
2
5
C
4
E
F
4
D
C
5
D
2
1
F
E
1
1
2
6
7
11
8
10
13
14
9
12
Figure 13: Cleaning Hoses, Dual Fill Valves and Drain Pump (A-G are connection points to humidifier)
1
2
3
4
Drain pump
Fill valve
Float chamber
P-trap
54 Maintenance
5
6
7
8
9
Secondary heat-exchanger
(CS/NX models only)
Bracket, drain pump
O-ring
Drain valve
Drain pump adapter
2596646_A_EN_2001_Nortec-GS_OM
10
11
12
13
14
Drain pump, 24 V
Drain pump cover
O-ring (x2)
Dual fill valve
Strainer
Nortec GS
6.5.6
Cleaning the Burner Assembly
The burner(s) in the Nortec GS humidifier 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 14.
1. Shut down the humidifier. Remove the plumbing cabinet door panel and make sure that the tank
has been emptied.
2. Remove the four M5 nuts that secure the blower tube to the burner assembly.
3. Disengage the blower tube from the burner assembly.
4. Disconnect the ignition wire from the spark-igniter.
5. Remove the M6×12 hex-head bolts and the burner assembly. Discard the burner gasket.
11
12
6
10
6
13
5
15
10
9
7
5
1
15
14
4
11
8
2
11
3
M6x10
M6x10
M6x10
14
3
5
M6x12
M6x10
12
7
M6x10
10
M6x12
2
M6x12
M6x10
5
7
8
M6x12
3
1
M6x10
M6x10
4
M6x12
2
1
M6x12
M6x12
8
9
M6x10
11
M6x10
4
6
M6x10
6
M6x10
M6x10
13
M6x10
9
10
M6x12
M6x12
M6x10
Figure 14: Cleaning the Burner Assembly
1
2
3
4
5
Nortec GS
Spark-igniter, electrode)
Spark-igniter, bracket
Spark-igniter, gasket
Control wire
Blower tube, compact unit only
6
7
8
9
10
Blower tube, full size unit only
Lock nut M5 (x4) - 10 in-lb (1.2 N·m)
M6x12 hex head (x9) - 15 in-lb (1.69 N·m)
M6x10 socket cap (x15) - 60 in-lb (6.78 N·m)
Spark-igniter
2596646_A_EN_2001_Nortec-GS_OM
11
12
13
14
15
Burner
Burner gasket
Burner-blower gasket
M4 Nut (x2)
Burner assembly matting
Maintenance 55
6. Visually inspect the matting 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.
If the matting is clogged, DO NOT use a scraper to remove the blockage. Use low pressure air at
maximum 0.005 psi (35 Pa) to clear all blockages without damaging the matting. Blow air in the
direction of the arrow.
7. 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. Use a new igniter gasket.
8. Assemble the burner assembly in reverse order. Always use a new burner gasket.
9. Apply nickel anti-seize lubricant (Loctite® LB 771™ or equivalent) to the M6×12 hex-head bolts
before assembly. Install with M6 lock washers. Wipe off excess lubricant.
Torque the M6x12 bolts to 15 in-lb (1.69 N·m).
10. On the blower tube, torque the four M5 nuts to 10 in-lb (1.2 N·m).
11. Restart the unit and check that the burner(s) operates properly.
Torque Values
6.5.7
M6x10
M6x12
M5 nut
60 in-lb (6.78 N·m)
15 in-lb (1.69 N·m)
10 in-lb (1.2 N·m)
Replacing Backup Battery
Only a qualified 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 15 on page 56.
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 humidifier.
2
1
3
Figure 15: Backup Battery and Fuse Replacement
1
Board, integrated control
56 Maintenance
2
Battery – 3V (CR 2032)
2596646_A_EN_2001_Nortec-GS_OM
3
Slow-acting fuse (10 A)
Nortec GS
6.5.8
Replacing Internal Fuse
Only a qualified service technician authorized by the customer should replace the internal fuse.
Replace the internal fuse in the control cabinet as follows. Refer to "Resetting Service Reminder" on page 57.
1. Remove the door panel on the control cabinet. Swing the front panel open.
2. Replace the fuse with a 10 A slow-acting 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 humidifier.
6.5.9
Resetting Service Reminder
Reset the service reminder messages and maintenance warnings in the control software after performing the required scheduled maintenance:
1. Menu > Service > General Service tab > Reset Service Reminder. A reset dialogue appears and
prompts you to confirm the reset.
2. Select the <Yes> button on the confirmation screen. Select the <No> button to abort the reset.
6.5.10 Installing Software Updates
All software updates can be downloaded from www.condair.com. Download the file and extract it to a
USB memory stick that has been formatted to 32-bit FAT system. The software update file (ending with
.bin) should be located at the root level on the USB stick.
Install the updates for the control software as follows:
1. Set the On/Off button to the Off position and disconnect the power supply to the humidifier at the
external disconnect switch. To prevent accidental power-up, lockout and tag out according to the
established safety practices at your facility.
2. Remove the door panel on the control cabinet – refer to "Removal and Installation of Access Panels" on
page 49 and swing the front panel open.
3. Carefully insert the USB memory stick into the USB port. The maximum length of the memory stick
should not exceed 3 in (75 mm).
4. Close the front panel, and install the door panel.
5. Remove the lock and tag from the external disconnect switch, and restore power to the humidifier.
6. Set the On/Off button to the On position.
7. When the Home screen appears, select the <Menu> button, then enter the password to login.
CAUTION!
Risk of file corruption!
DO NOT interrupt software updating once it starts. Wait until updating is completed. Corrupted
control software can render the humidifier unusable.
Note: If software updating is accidentally interrupted, the humidifier 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.
8. 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.
9. Repeat Step 1 to Step 4, and carefully remove the USB memory stick.
10. Close the front panel. Install the door panel, making sure that it is fastened securely.
11. Repeat Step 5 and Step 6 to power up the humidifier.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Maintenance 57
7
Fault Isolation
7.1
General
Troubleshooting of the Nortec GS humidifier must only be performed by well qualified 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 humidifier may require personnel to access the inside of the control
cabinet in the humidifier which may expose personnel and equipment to the hazards described in "For
Your Safety" on page 6.
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 15). The warning and fault message types are described in Table 5 on page 16.
When a warning/fault condition occurs, select the warning or fault message to view the "Fault/Service History
Tab" and additional details. Refer to Figure 16.
Figure 16: 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/notification 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 humidifier and system components. Hence,
a full fault diagnosis always requires a thorough examination of the entire system (hose connections,
control systems, etc.).
Table 13 provides general guidelines for troubleshooting the humidifier. For detailed troubleshooting information of the auxiliary system components, refer to their product manuals.
The list of warning and fault messages, and corrective actions are shown in Table 14 on page 59.
58 Fault Isolation
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
Table 13: General Troubleshooting – Humidifier
Problem
Probable Cause
Nothing happens when the
On/Off switch is turned On.
Incorrect voltage, or no voltage.
–– Check the disconnect switch in the supply line.
–– Check the fuse between the transformer and the On/Off switch.
Step-down transformer not outputting 24 VAC.
–– Check the fuse.
–– Measure and confirm 24 VAC on the transformer primary connections. Replace the transformer, if necessary.
Humidifier will not produce
steam, or does not reach RH
setpoint value.
Safety loop is open.
–– Check if the message “Safety Loop” is displayed in the operating status area of the Home
screen.
–– Check if there is 24 VAC supply at low voltage terminal strip pin “2”.
–– Check that all On/Off devices connected to low voltage terminal strip pins “1” and “2” are
wired properly, and their contacts are closed when they should be.
Output is limited by the high limit humidistat signal.
–– Check if the high limit humidistat is installed too close to the steam distributor. The recommendation is five times the absorption distance or minimum 3 m. Check the setpoint value
for the high limit – typically set at 80% RH.
No signal on Channel 1.
–– Check voltage between low voltage terminal strip pins “3” and “4”. For a demand signal
configuration, the signal must be 27% of full scale signal for the humidifier to start. For a
transducer signal configuration, the signal must be lower than the setpoint value for the
humidifier to start.
No signal on Channel 2 (on units with Control Channels set to "Dual").
–– Check voltage between low voltage terminal strip pins “3” and “5”. For a demand signal
configuration, the signal must be 27% of full scale signal for the humidifier to start. For a
transducer signal configuration, the signal must be lower than the setpoint value for the
humidifier to start.
Capacity has been manually limited.
–– Check/adjust Manual Capacity, if necessary.
Humidifier displays warning
or fault message.
7.4
The control software has detected an abnormal condition.
–– Refer to "Warning and Fault List" on page 59.
Warning and Fault List
Table 14 shows the list of warning and fault messages triggered by the control software in the humidifier, 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 fixing a fault condition, reset the fault status as described
in "Resetting Fault Status" on page 66.
Table 14: Warning and Fault List
Code
Warning
Fault
W01
E01
Message
Smartcard missing
Probable Cause
No communication with the SIM card.
The SIM card may not be seated properly on the integrated control board.
Check that the SIM card is seated properly.
Defective SIM card.
Contact your Condair representative.
W06
–
Main Unit Missing
(or)
Extension Missing
(No Signal
Warning)
No communication between the Extension unit and the Main unit in the Linkup chain.
Operation is interrupted until a signal is received.
The Linkup configuration between the Main and Extension unit is not set correctly.
–– Check the Linkup configuration.
The Main unit or Extension unit may be switched off.
–– Switch on the Main and/or Extension unit.
Loose connection.
–– Check the connection between the Main and Extension units.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Fault Isolation 59
Code
Warning
Fault
W07
–
Message
Ext Fault
Probable Cause
An Extension unit has a fault condition which was communicated to the
Main unit.
Alarm condition in the Extension
unit(s).
–– Check the Extension unit(s).
–
E10
CTRLR Fault
(or)
Memory
(or)
CTRLR Reset
Flash memory read/write fault.
–– Contact your Condair representative.
W22
E22
Fill Warning
(W22)
Fill Timeout
(E22)
The fill valve(s) have been active for an extended length of time and the water level is
still zero. The dual fill 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 supply line is open, and there is adequate flow and pressure.
Loose wiring, or clogged strainer in dual fill valves.
–– Check the wiring to the float board and the dual fill valves.
–– Check the strainer in the dual fill valves is not clogged – refer to "Cleaning Hoses, Dual Fill
Valves and Drain Pump" on page 53.
Drain pump running, or manual drain valve open.
–– Check that the manual drain valve is closed, and the drain pump is not running.
Floats may be stuck.
–– Visually check that the different LEDs on the float board light up as the water level in
the float chamber changes. If necessary, clean the float chamber – refer to "Cleaning the
Float Chamber" on page 52.
Fill valve relay on the driver board not seated properly, or defective.
CAUTION! Electro-static discharge damage to board.
–– Check that LED3 (corresponding to REL4 for the high volume fill valve) and LED4
(corresponding to REL5 for the low volume fill valve) on the driver board light up when
the fill 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.
Defective dual fill valves.
–– Check for 24 VAC on the pins of the dual fill valves. If necessary, replace the dual fill
valves. Reconnect the wires correctly.
Scale build-up in the drain fitting.
–– Clean the drain fitting, as described in "Cleaning the Tank" on page 50.
W28
E28
Maintenance
Due Warning
Maintenance
Due Fault (on
fault)
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 45 for maintenance procedures.
–– Reset the service reminder after performing the required scheduled maintenance –
refer to "Resetting Fault Status" on page 66.
W32
–
RH Signal
The RH input is less than 3%. Operation is interrupted until an input higher than 3% is
received.
Loose wiring, faulty sensor.
–– Check the connection between the sensor and the unit.
–– Swap the sensor with another sensor and verify that it is working. If necessary, replace
the sensor.
Layout of the humidifier control system may be causing signal interference.
–– Check that the controls layout permits accurate readings.
60 Fault Isolation
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
Code
Warning
Fault
W34
–
Message
Remote Disabled
Probable Cause
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 by the BMS.
–– Enable the unit through the BMS.
–– If unit cannot be enabled remotely, try enabling the unit through the Modbus setting in
the control software.
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 humidifier 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 configured in the control software. The unit
will remain idle until the sensed RH value drops below the setpoint value.
Incorrect layout of the humidifier control system (sensor location too close to steam
distributor or other sources that affect measurement), or defective components.
–– Check the humidifier control system.
Humidifier capacity too large for the space being humidified.
–– Limit the output capacity of the humidifier – refer to Manual Capacity.
–– Adjust the Proportional / Integral value of the controller.
The RH High value for the sensor signal may be set too low.
–– Adjust the RH High value for the sensor signal.
W43
–
RH Low Warning
Sensed humidity is below the minimum value configured in the control software. The unit
should continue operating unless it is in standby mode.
Incorrect layout of the humidifier control system (sensor location too close to steam
distributor or other sources that affect measurement), or defective components.
–– Check the humidifier control system.
The RH Low value for the sensor signal may be set too high.
–– Adjust the RH Low value for the sensor signal.
Unit may be in standby mode.
–– Check the safety loop is closed, and that all burners are operational.
–
E46
Drain Check
The drain pump has been active for an extended period of time without the water level
changing in the float chamber. The unit needs to drain for optimal performance. Fix the
problem before restarting the unit.
Back pressure in the drain line may be causing slow drain.
–– Remove any blockages in the drainage system.
Loose connection.
–– Check the connections between the float board and the driver board, as well as the
drain pump.
Floats may be stuck.
–– Visually check that the different LEDs on the float board light up as the water level in
the float chamber changes. If necessary, clean the float chamber – refer to "Cleaning the
Float Chamber" on page 52.
Drain pump may be clogged.
–– Clean the drain pump – refer to "Cleaning Hoses, Dual Fill Valves and Drain Pump" on page 53.
W52
–
Float Inconsistent
On unit startup the float levels do not rise logically from low water level L1 (red LED) to
high water level L5 (yellow LED).
Excess back pressure in the steam line.
–– Check the steam line.
Float level sensor may be malfunctioning.
–– Inspect all hoses and connections.
–– Clean the float chamber – refer to "Cleaning the Float Chamber" on page 52.
W57
–
Startup Code
Activation code required to use the humidifier.
Activation code missing.
–– Contact your Condair representative.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Fault Isolation 61
Code
Warning
Fault
–
E84
Message
Driver Board
Fault
Probable Cause
No communication between the integrated control board and the driver 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.
–– 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 flashing. Otherwise, contact your Condair representative.
Unspecified driver board fault.
–– Check that the heartbeat LED10 on the driver board is blinking. Otherwise, contact
your Condair representative.
–
E138
Over-Temperature 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 first, then reset the over-temperature
switch as described in"Resetting Fault Status" on page 66.
Unit may be operating with incorrect water level.
–– Check that the float chamber is operating properly.
Exhaust vent may be blocked.
–– Make sure that the exhaust vent is free of obstructions.
Dual fill valves may not be working properly.
–– Refer to the troubleshooting procedure for fault code “Fill Check Fault“.
Thermocouple wire may be damaged.
–– Visually inspect the thermocouple wire for kinks or other damage.
Excess scale build-up on the coils of the primary heat-exchanger.
–– Remove scale build-up – refer to "Cleaning the Tank" on page 50.
Temperature of the water supply may be too high.
–– Check that the temperature of the water supply. For optimal performance, temperature
must not exceed 70 °F (21 °C).
Exhaust condensate removal (on CS/NX model) may be blocked.
–– Check for blockages in the exhaust drain line in the unit.
W139
–
No Burners
Available
All burners have been disabled through the control software. No burners 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 software.
–
E140
Keep Warm
Fault
The Keep Warm function is activated, but the tank temperature has not increased in the
allotted time.
Loose connection.
–– Check the tank temperature sensor connection.
Burners may be disabled.
–– Check that no more than one burner is disabled in the control software.
Scale build-up on the temperature sensor.
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 50.
Defective temperature sensor.
CAUTION! The tank may be hot to the touch.
–– Check the tank to see if it is hot. Then check the electrical signal to the sensor.
Replace the sensor, if defective.
62 Fault Isolation
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
Code
Warning
Fault
W141
Message
Ignition Fail
Probable Cause
The ignition module identified has failed to ignite within the allotted time (4 minutes). The
unit will index to next available burner in the sequence.
Loose wiring, or defective spark-igniter.
–– 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 connection. If necessary, replace the spark-igniter.
Gas supply problem.
–– Check the gas supply is open.
–– Check for 24 VAC at the gas valve.
–– Check the status LED on the ignition control module – three flashes 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.
Faulty ignition control module.
–– Check the status LED on the ignition control module – a solid red LED indicates an
ignition control module failure. Replace the ignition control module, if necessary.
Incorrect gas valve adjustments.
–– Check if the throttle adjustment on the gas valve has been tampered.
–
E142
No Burners
Available
All burners have experienced an ignition control module failure, and no 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.
–– Check for 24 VAC at the gas valve.
–– Check the status LED on the ignition control module – three flashes 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.
Loose wiring, or defective spark-igniter.
–– Visually check the sight port of problematic burner – check for a glowing red sparkigniter followed by a flame.
–– Check the spark-igniter connection. If necessary, replace the spark-igniter.
Faulty ignition control module.
–– Check the status LED on the ignition control module – a solid red LED indicates an
ignition control module failure. Replace the ignition control module, if necessary.
–
E143
Gas Valve Fail
The identified gas valve was energized out of sequence, or when it was 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 electronics are connected according to the wiring diagram.
–– Check the status LED on the ignition control module – three flashes 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.
Faulty gas valve.
–– Check for voltage at locations labelled "TH" and "V2" on the ignition control module
after the blower has completed pre-purging 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.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Fault Isolation 63
Code
Warning
Fault
–
E144
Message
Float Level
Probable Cause
On three consecutive occasions, more than one float level was registering at the same
time. The unit cannot operate without accurate float level reading. Fix the problem before
restarting the unit.
Floats may not be working properly.
–– Check the float chamber for scale build-up, and clean if necessary – refer to "Cleaning
the Float Chamber" on page 52.
–– Check that both floats have equal buoyancy, as described in "Cleaning the Float Chamber"
on page 52. Replace the floats, if necessary.
Faulty float board
–– Examine the float board for signs of corrosion, splashed water on it, or other damage.
Replace the float board, if necessary.
Obstructions in hoses, or hoses plumbed incorrectly.
–– Check for obstructions in the hoses.
–– Check that all hoses are plumbed correctly.
–
E145
Fill Check Fault
The dual fill valves have been active for an extended period of time without the water
level rising in the float 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 supply line is open, and there is adequate flow and pressure.
Loose wiring, or clogged strainer in dual fill valves.
–– Check the wiring to the float board and the dual fill valves.
–– Check the strainer in the dual fill valves is not clogged – refer to "Cleaning Hoses, Dual Fill
Valves and Drain Pump" on page 53.
Drain pump running, or manual drain valve open.
–– Visually check that the manual drain valve is closed, and the drain pump is not
running.
Floats may be stuck.
–– Visually check that the different LEDs on the float board light up as the water level in
the float chamber changes. If necessary, clean the float chamber – refer to "Cleaning the
Float Chamber" on page 52.
Fill valve relay on the driver board not seated properly, or defective.
CAUTION! Electro-static discharge damage to board.
–– Check that LED3 (corresponding to REL4 for the high volume fill valve) and LED4
(corresponding to REL5 for the low volume fill valve) on the driver board light up when
the fill 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. Replace if
necessary.
Defective dual fill valves.
–– Check for 24 VAC on the pins of the dual fill valves. If necessary, replace the dual fill
valves. Reconnect the wires correctly.
Scale build-up in the drain fitting.
–– Clean the drain fitting, as described in "Cleaning the Tank" on page 50.
64 Fault Isolation
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
Code
Warning
Fault
–
E146
Message
Blower Not
Operating
Probable Cause
The identified blower is not operating, or registered a value below 500 rpm 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 modulation) and power connection to the blower.
Blower relay on driver board may be defective.
CAUTION! Electro-static discharge damage to board.
–– Visually check that LED7 (corresponding 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.
Blower feedback signal may be missing.
–– Restart the unit, and check the blower rpm in Input Diagnostics in the control software. If
the rpm is low, contact your Condair representative.
Restrictions at blower, or damaged blower.
–– Visually inspect the blower and blower inlet for restrictions.
–– Visually inspect the blower impeller for damage. Order a replacement blower, if
necessary.
Main power to blower relay damaged.
–– Visually inspect the connections between the main power.
–– Visually inspect the blower relay for damage and replace if necessary.
Worn out blower.
–– The blower speed may decrease due to wear. The blower is safe to operate, but the
output may be reduced. Order a replacement blower.
W147
–
Blower RPM
Low
The blower identified is running at a lower rpm than exptected by more than the allowable tolerance. The unit will continue monitoring the blower rpm.
Loose connections.
–– Check the PWM and power connection to the blower.
Low voltage.
–– Visually check that LED7 (corresponding 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 output side of the blower relay.
Restrictions at blower, or damaged blower.
–– Visually inspect the blower and blower inlet for restrictions.
Worn out blower.
–– The blower speed may decrease due to wear. The blower is safe to operate, but the
output may be reduced. Order a replacement blower.
W148
–
Blower RPM
High
The blower identified is running at a higher rpm than expected by more 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 the blower.
W149
E149
AP Open Warn
The air proving switch identified has opened while the unit was operating 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.
–– Visually inspect the air intake vent and air intake terminal for blockages.
Defective air proving switch.
–– Check that the air proving switch 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.
Pressure tubes not connected, or loose wiring.
–– Check the pressure tube connections are attached securely.
–– Check the wiring between the air proving switch(es) and connector J2 on the driver
board. With demand off and the blower not operating, check for 24 VAC at pins 1 and
2 on connector J2.
Exhaust condensate removal (on CS model) may be blocked.
–– Check for blockages in the exhaust drain line in the unit.
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
Fault Isolation 65
Code
Warning
Fault
–
E153
Message
AP Exhaust
Fault
Probable Cause
One or more of the external safety switches installed for the Exhaust in Duct feature
have opened.
–– Safety switches have been wired incorrectly. Verify for the proper installation of all
safety switches, and verify that the switches have been wired correctly to the controls
low-voltage terminal.
–– Verify that the air handling system is operational.
7.5
Resetting Fault Status
With the exception of the over-temperature fault, 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/Off button to the Off position. Wait approximately for 5 seconds, then set the On/Off 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 and wait for the unit to cool down.
2. Press the reset button on the over-temperture switch.
3. Set the On/Off button to the Off position. Wait approximately for 5 seconds, then set the On/Off 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.
66 Fault Isolation
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
8
Decommissioning
8.1
General
If the Nortec GS humidifier needs to be removed from service (for disposal or long-term storage), strictly
follow all instructions in this chapter.
Personnel Qualifications
Decommissioning of the Nortec GS humidifier must only be performed by a qualified service technician
authorized by the customer. It is the customer's responsibility to verify qualifications of the personnel.
Safety
Decommissioning of the Nortec GS humidifier will require personnel to access the inside of the control
and plumbing cabinets in the humidifier, which may expose personnel and equipment to the hazards.
Refer to "For Your Safety" on page 6.
8.2
Removal from Service for Disposal or Long-term Storage
Remove the Nortec GS humidifier from service (for disposal or long-term storage) as follows:
1. Drain the tank, and shut down the humidifier as described in "Shutting Down" on page 44. Follow all
safety precautions.
2. Disconnect the gas connection to the humidifier.
3. Disconnect and remove the power supply to the Nortec GS humidifier. Refer to "Wiring Diagrams"
in the Installation Manual.
4. Disconnect and remove the control signal inputs to the humidifier.
5. Disconnect the steam and condensate lines, and empty out all fluids.
6. Disconnect the water and drain connections to the humidifier.
7. Disconnect and remove the intake and exhaust vents.
8. Remove the humidifier from its mounting surface.
9. If the Nortec GS humidifier is to be put into long-term storage, store the humidifier 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 humidifier is to be disposed off, refer to "Disposal/Recycling".
8.3
Disposal/Recycling
The Nortec GS humidifier should not be disposed off in domestic waste, and should only be disposed
off 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
2596646_A_EN_2001_Nortec-GS_OM
Decommissioning 67
9
Performance and Operating Data
9.1
Performance Data
Minimum Input (gross) BTUh (kW)
Maximum Input (gross) BTUh (kW)
Natural Gas
Propane
Natural Gas
Propane
GS 50-CS
GS 50-NX
GS 50-MT
12,400 (3.6)
13,000 (3.8)
13,000 (3.8)
–
–
62,000 (18.2)
65,000 (19.0)
62,000 (18.2)
–
–
Min./Max. Steam
Capacity
lb/h (kg/h)
10-50 (4.5-23)
10-50 (4.6-23)
10-50 (4.6-23)
GS 100-CS
GS 100-NX
GS 100-MT
24,800 (7.3)
26,000 (7.6)
24,800 (7.3)
–
–
124,000 (36.3)
120,000 (35.2)
124,000 (36.3)
–
–
20-100 (9-45)
20-100 (9-45)
20-100 (9-45)
GS 150-CS
GS 150-NX
GS 150-MT
37,200 (10.9)
39,000 (11.4)
37,200 (10.9)
–
–
186,000 (54.5)
187,500 (55.0)
186,000 (54.5)
–
–
30-150 (13.6-68)
30-150 (13.6-68)
30-150 (13.6-68)
GS 200-CS
GS 200-NX
GS 200-MT
24,800 (7.3)
26,000 (7.6)
24,800 (7.3)
–
–
248,000 (72.7)
240,000 (70.3)
248,000 (72.7)
–
–
20-200 (9-91)
20-200 (9-91)
20-200 (9-91)
GS 300-CS
GS 300-NX
GS 300-MT
37,200 (10.9)
39,000 (11.4)
37,200 (10.9)
–
–
372,000 (109.0)
375,000 (109.9)
372,000 (109.0)
–
–
30-300 (13.6-136)
30-300 (13.6-136)
30-300 (13.6-136)
GS 450-CS
GS 450-NX
GS 450-MT
37,200 (10.9)
39,000 (11.4)
558,000 (163.5)
562,500 (164.9)
42 000 (12.3)
37,200 (10.9)
–
–
630 000 (184.6)
558,000 (163.5)
–
–
30-450 (13.6-204)
30-450 (13.6-204)
30-450 (13.6-204)
GS 600-CS
GS 600-NX
37,200 (10.9)
39,000 (11.4)
37,200 (10.9)
–
744,000 (218.0)
750,000 (219.8)
744,000 (218.0)
–
30-600 (13.6-272)
30-600 (13.6-272)
GS 600-MT
42 000 (12.3)
–
840 000 (246.2)
–
30-600 (13.6-272)
Nortec
Model
9.2
14 000 (4.1)
28 000 (8.2)
42 000 (12.3)
28 000 (8.2)
42 000 (12.3)
70 000 (20.5)
140 000 (41.0)
210 000 (61.5)
280 000 (82.1)
420 000 (123.1)
Operating Data
Control Signal Input Type:
Active
0-5 VDC, 1-5 VDC, 0-10 VDC, 2-10 VDC, 0-20 VDC, 0-16 VDC, 3.2-16 VDC, 0-20 mADC, 4-20 mADC
Passive
135-10 kΩ ohmic humidity sensor
On/Off control
<2.5 VDC
Digital (via Modbus,
BACnet IP/MSTP
BACnet IP, BACnet MSTP, Modbus, LonWorks (Option), BACnet MSTP BTL-Certified (Option), BACnet IP BTL-Certified (Option)
Off, 2.5-20 VDC
On
Ambient Conditions:
Ambient temperature
41-104 °F (5-40 °C)
Relative humidity
5-80% (non-condensing)
Combustion Air:
Combustion air maximum temperature
86 °F (30 °C)
Backpressure:
Maximum permissible backpressure (duct static pressure and line backpressure) 6 in H2O (1.49 kPa) compact unit
10 in H2O (2.49 kPa) full-size unit
68 Performance and Operating Data
2596646_A_EN_2001_Nortec-GS_OM
Nortec GS
Gas Operating Pressure:
Natural gas
4.5-10.0 in H2O (1.1-2.4 kPa)
Propane
9.0-13.0 in H2O (2.2-3.2 kPa)
Water Supply:
Water pressure (regulated)
30-80 psig (3.0-8.0 bar, 207-550 kPa)
Flow rate
2.6 gpm (10 L/min) for Nortec GS 50-300 , 5.3 gpm (20 L/min) for Nortec GS 450600
Water temperature
34-59 °F (1-15 °C) recommended; maximum 77 °F (25 °C)
Water quality
Cold potable water filtered to 5 μm, hardness of 0-14.94 gpg (0-205 ppm), pH
level between 5-8 and chloride 0-40 ppm.
Drain Water:
Drain water temperature
140 °F (60 °C) maximum (with drain water cooling), 212 °F (100 °C) (without
drain water cooling)
Drainage capacity
5.3 gpm (20 L/min)
IP Rating:
IP20 for all units
Nortec GS
2596646_A_EN_2001_Nortec-GS_OM
PerformanceandOperatingData 69
Warranty
Condair Inc. and/or Condair Ltd. (hereinafter collectively referred to as THE COMPANY), warrant for a period of two
years after installation or 30 months from manufacturer’s ship date, whichever date is earlier, that THE COMPANY’s manufactured and assembled products, not otherwise expressly warranted, are free from defects in material
and workmanship. No warranty is made against corrosion, deterioration, or suitability of substituted materials used
as a result of compliance with government regulations.
THE COMPANY’s obligations and liabilities under this warranty are limited to furnishing replacement parts
to the customer, F.O.B. THE COMPANY’s factory, providing the defective part(s) is returned freight prepaid
by the customer. Parts used for repairs are warranted for the balance of the term of the warranty on the
original humidifier or 90 days, whichever is longer.
The warranties set forth herein are in lieu of all other warranties expressed or implied by law. No liability
whatsoever shall be attached to THE COMPANY until said products have been paid for in full and then
said liability shall be limited to the original purchase price for the product. Any further warranty must be in
writing, signed by an officer of THE COMPANY.
THE COMPANY’s parts or materials that are considered consumables, including but not limited to: cylinders,
filters, nozzles, membranes, media, gaskets, O-rings, etc. are NOT covered by the warranty.
THE COMPANY makes no warranty and assumes no liability unless the equipment is installed in strict
accordance with a copy of the catalog and installation manual in effect at the date of purchase and by a
contractor approved by THE COMPANY to install such equipment.
THE COMPANY makes no warranty and assumes no liability whatsoever for consequential damage or damage resulting directly from misapplication, incorrect sizing or lack of proper maintenance of the equipment.
THE COMPANY makes no warranty and assumes no liability whatsoever for damage resulting from freezing
of the humidifier, supply lines, drain lines, or quality of the water used.
THE COMPANY retains the right to change the design, specification and performance criteria of its products
without notice or obligation.
THE COMPANY’s limited warranty on accessories, not of the companies manufacture, such as controls,
humidistats, pumps, etc. is limited to the warranty of the original equipment manufacturer from date of
original shipment of humidifier.
Extended Warranty
Extended warranties are available to purchase under the conditions listed above.
CONSULTING, SALES AND SERVICE:
Condair Ltd.
U.S.A.
835 Commerce Park Ave
Ogdensburg, NY 1366-2209
CANADA
2740 Fenton Road
Ottawa, ON, K1T 3T7
Tel: 1.866.667.8321
Fax: 613.822.7964
Email: [email protected]
Website: www.condair.com
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