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2582954_C_EN_1611
IMPORTANT! Read and save these instructions. This manual to be left with the equipment.
OPERATION AND
MAINTENANCE MANUAL
Electrode Steam Humidifier
Nortec EL Series
Humidification and Evaporative Cooling
Thank you for choosing Nortec
Installation date (DD/MM/YYYY):
Commissioning date (DD/MM/YYYY):
Site:
Model:
Serial number:
Manufacturer
Nortec Humidity Ltd.
2740 Fenton Road, Ottawa, ON, Canada K1T 3T7
Tel. 1.866.NORTEC1, Fax 613.822.7964
[email protected], www.humidity.com
Proprietary Notice
This document and the information disclosed herein are proprietary data of Nortec Humidity Ltd. Neither this document, nor the information contained herein shall be reproduced, used, or disclosed to others without the written
authorization of Nortec Humidity Ltd., except to the extent required for installation, operation or maintenance of
the customer's equipment.
Liability Notice
Nortec Humidity 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 Nortec Humidity Ltd.
Copyright Notice
Copyright 2016, Nortec Humidity Ltd, All rights reserved.
Technical modification rights reserved.
Contents
1Introduction
1.1
Before You Start!
1.2
General
1
1
1
2
For Your Safety
3
3
3.1
3.2
Product Overview
General Description
Functional Description
5
5
6
4
4.1
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.7.1
4.2.7.2
4.2.7.3
4.3
4.3.1
4.3.2
Operator Interface
Controls
Control Software
Home Screen
General Navigational Elements
Operating Status
Maintenance and Fault Status
Help
System Information
Main Menu
Configuration Menu
Service Menu
Administrator Menu
Software Configuration
Configuring the Control Software
Configuring for Multi-Unit Operation
9
9
11
11
12
12
13
14
14
21
23
44
48
50
50
51
5Operation
5.1
General
5.2
Operating Procedures
5.2.1
Starting Up
5.2.2
Remote Monitoring
5.2.3
Inspections During Operation
5.2.4
Manually Initiate Steam Cylinder Draining
5.2.5
Exporting Trend Data
5.2.6
Shutting Down
5.2.7
Restarting After Shutdown
53
53
54
54
54
55
55
56
58
58
6Maintenance
6.1
General
6.2
Maintenance List
6.2.1
Regular Replacement of Steam Cylinder(s)
6.2.2
Regular Maintenance of Steam Humidifier
6.3
Maintenance Procedures
6.3.1
Removal and Installation of Door Panels
6.3.2
Removal and Installation of Steam Cylinder
6.3.3
Removal and Installation of Drain Valve
6.3.4
Replacement of Backup Battery and Fuses
59
59
60
60
60
61
61
62
64
65
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Contents
iii
iv
6.4
6.4.1
6.4.2
6.5
6.6
Cleaning
Cleaning Agents
Cleaning Procedures
Resetting Cylinder
Installing Software and Firmware Updates
67
67
67
68
69
7
7.1
7.2
7.3
7.4
7.5
7.6
Fault Isolation
General
Fault Indication
General Troubleshooting
Nortec EL Warning and Fault List
Exporting Fault and Service History
Resetting Fault Status
71
71
71
72
74
79
79
8
Wiring Diagrams
81
9Decommissioning
9.1
General
9.2
Removal from Service for Disposal or Long-term Storage
9.3
Disposal/Recycling
85
85
86
86
10
10.1
10.2
10.3
10.3.1
10.3.2
87
87
87
88
88
88
Contents
Product Specifications
Performance Data
Operating Data
Size and Weight
Size
Weight
2582954_C_EN_1611
Nortec EL
1
Introduction
1.1
Before You Start!
Thank you for purchasing the Nortec EL steam humidifier.
The Nortec EL steam humidifier incorporates the latest technical advances and meets all recognized
safety standards. Never-the-less, improper use of the Nortec EL steam humidifier may result in danger
to the user or third parties, and/or damage to property.
To ensure safe, proper and economical operation of the Nortec EL steam humidifier, observe and comply
with all information and safety instructions contained in this manual, as well as all relevant documentation of components of the installed humidification system.
If you have additional questions, contact your local Nortec representative. They will be glad to assist you.
1.2
General
Limitations
The subject of this manual is the Nortec EL steam humidifier. The various options and accessories may
only be described in-so-far as is necessary for proper operation of the equipment. Additional information
on 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 EL steam humidifier, and is
intended for well trained personnel who are suitably qualified for their respective tasks.
Symbols Used in This Manual
CAUTION!
The word "CAUTION" in conjunction with the general caution symbol is used to provide safety
instructions that, if neglected, may cause damage and/or malfunction of the unit or damage to
property.
WARNING!
The word "WARNING" in conjunction 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 word "DANGER" in conjunction with the general danger symbol is used to provide safety
instructions that, if neglected, may cause severe injury to personnel or even death. Other specific
danger symbols may also be used in place of the general symbol.
Nortec EL
2582954_C_EN_1611
Introduction
1
Other Related Publications
This operation 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 crossreferences 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 local Nortec representative for a replacement copy.
2
Introduction
2582954_C_EN_1611
Nortec EL
2
For Your Safety
General
Every person who is tasked with the operation and maintenance of the Nortec EL steam humidifier must
read and understand this manual before performing any work. Knowing and understanding the contents
of the operation 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 marking applied to the Nortec EL steam 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 Nortec.
All personnel working with the Nortec EL steam humidifier must be familiar with, and comply with the
appropriate regulations on workplace safety and prevention of accidents.
Intended Use
The Nortec EL steam humidifier is intended exclusively for air humidification using a Nortec-approved
steam distributor or blower pack within specified operating conditions (refer to "Operating Data" on page 87
for details). Any other type of application, without the express written consent of Nortec, 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.
Dangers that may arise from the Nortec EL steam humidifier:
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Before performing any work inside the Nortec EL steam humidifier, shut down the
humidifier properly and secure it against accidental power-up as described in "Shutting Down" on
page 58.
WARNING!
Risk of severe burns from exposure to hot steam vapours!
The Nortec EL steam humidifier produces hot steam vapours. Contact with the 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 EL steam humidifier, as
described in "Shutting Down" on page 58 before fixing any leaks in the steam system.
Nortec EL
2582954_C_EN_1611
For Your Safety
3
WARNING!
Risk of severe burns from contact with hot surfaces!
Components of the stream system (including the steam cylinder, steam distributors, etc.)
get up to 212°F (100°C) during operation. Contact with the hot surfaces can result in severe
burns.
Prevention: Shut down the Nortec EL steam humidifier as described in "Shutting Down" on page 58
and wait for the components to cool down before performing any work on the steam system.
CAUTION!
Risk of damage to internal components from electrostatic discharge (ESD)!
The electronic components inside the humidifier are sensitive to electrostatic discharge
(ESD).
Prevention: Take appropriate measures to protect the electronic components inside the unit against
damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.
Preventing Unsafe Operation
If it is suspected that the Nortec EL steam humidifier cannot be operated safely for any of the reasons
listed below, shut it down immediately, as described in "Shutting Down" on page 58, 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
All personnel working with the Nortec EL steam humidifier must immediately report to the customer any
alternations to the humidifier that may affect safety.
Modifications Prohibited
Modifications are not permitted on the Nortec EL steam humidifier without the express written consent
of Nortec.
Always use original Nortec replacement parts and accessories available through your local Nortec
representative.
4
For Your Safety
2582954_C_EN_1611
Nortec EL
3
Product Overview
3.1
General Description
The Nortec EL steam humidifier is an atmospheric steam generator, which operates on the electrode
heating principle. It is designed for direct room humidification using a blower pack, or humidification
through the ducts in an air handling unit using a steam distributor.
The Nortec EL steam humidifier has state-of-the-art features. It has an integrated control board which
not only controls the humidifier, but 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 six humidifiers (12 cylinders) can be set up in a main-extension configuration using
Nortec's Linkup system to satisfy large humidification needs.
The Nortec EL steam humidifier comes in three different housing sizes – small, medium and large. The
small and medium size models have a single steam cylinder, while the large model is equipped with
dual steam cylinders. Each steam cylinder has its own dedicated driver board to receive control signal
inputs. The dual driver boards allow the large models to be configured to operate in series, in parallel
or independent mode to control humidity in one or more zones depending on how they are configured.
Figure 1 shows the various components of the Nortec EL steam humidifier (door panels removed for clarity).
11
25
12
10
1
9
13
24
2
14
8
23
15
3
16
22
4
21
7
20
19
18
17
6
5
Figure 1: Nortec EL Steam Humidifier (Medium size model shown)
1
2
3
4
5
6
7
8
9
10
11
12
13
Nortec EL
Main contactor, K1
Driver board
Terminal block, high voltage supply
Specification label
Transformer
Remote fault indication PCB
Integrated control board
Cylinder strap
Electrode plug
Steam outlet hose (optional)
Steam adaptor (optional)
Sensor, high water level (orange wire)
Low voltage terminal
14
15
16
17
18
19
20
21
22
23
24
25
2582954_C_EN_1611
Front panel
Touchscreen display
On/Off switch
Drain canal
Drain valve
Steam cylinder
Fill hose (fill cup to cylinder)
Fill valve
Fill hose (fill valve to fill cup)
Steam outlet, steam cylinder
Overflow hose
Fill cup
Product Overview
5
3.2
Functional Description
Refer to Figure 1 on page 5 and Figure 2 on page 7.
Water Supply
Water enters the humidifier through the fill valve into the open fill cup with integral air gap, and then flows
down through the fill hose into the steam cylinder.
Steam Generation
When the humidifier receives a signal to supply steam the contactor closes, and after a 60 second delay
the fill valve opens and water enters the bottom of the steam cylinder, as described above.
As soon as the electrodes come in contact with the water, current begins to flow between the electrodes,
generating heat. As the water level continues to rise, more surface of the electrodes come in contact
with the water. This results in more current draw. Once the water has heated to the boiling point, steam
will be produced. (Note: On first startup when the conductivity level of the water is low, it may take 3060 minutes for water to heat sufficiently to produce steam).
When the steam output reaches the requested level, the fill valve closes. As water is evaporated, the
water level and current drop. When the current falls below a certain percentage of the requested level,
the fill valve opens to raise the water level and the current and maintain the required steam output level.
When the actual output is higher than the requested steam output, the fill valve remains closed until
the desired output level is achieved through a gradual lowering of the water level due to evaporation.
Water Level Monitoring
A sensor monitors the high water level in the steam cylinder. When the sensor detects the high water
level, the fill valve closes to prevent over-filling.
Drainage
As the evaporation process continues, the conductivity level of the water increases due to the increasing
levels of residual minerals left behind as the water turns into steam. This affects the current draw, which
can rise beyond optimal levels. To prevent this from happening, the Nortec EL's auto-adaptive control
algorithm periodically drains some concentrated water in the cylinder and replaces it with fresh water.
Control
Steam production can be controlled using the continuous proportional (P) or the proportional-integral
(PI) controller internal to the humidifier, or an external modulating controller, or with an On/Off control
signal from an external humidistat.
6
Product Overview
2582954_C_EN_1611
Nortec EL
2, 3
)
ft
. 10
(3m
min
m)
.4-3
(2
0 ft
in.
13
Bn
8-1
or m
1, 2
4
12
10
9
11
5
6
8
7
Figure 2: Nortec EL Duct Humidification
1
2
3
4
5
6
7
Nortec EL
High limit On/Off humidistat (external safety chain)
Humidity sensor or modulating humidistat (used for
control of space in return duct, or high limit in supply duct)
On/Off humidistat (used for humidity control)
Steam line
Electrical disconnect, high voltage supply
Drain line
Air gap with optional trap
2582954_C_EN_1611
8
9
10
11
12
13
Water supply
Condensate line
Steam distributor
Air proving switch (external safety chain)
Supply air duct
Return air duct
Product Overview
7
1
2
12
3
11
4
5, 6
7
10
8
9
Figure 3: Nortec EL Direct Room Humidification
1
2
3
4
5
6
7
8
9
10
11
12
8
Blower pack, remote-mounted
Steam line
Blower pack, built-on
High level On/Off humidistat (external safety chain)
Humidity sensor or humidistat (used for control of space humidity or high limit)
On/Off humidity control
Electrical disconnect, high voltage supply
Drain line
Air gap with optional trap
Water supply
Condensate drain line (routed to floor drain)
Condensate drain connection through fill cup to steam cylinder (for remote blower pack)
Product Overview
2582954_C_EN_1611
Nortec EL
4
Operator Interface
4.1
Controls
The operator interface in the Nortec EL steam humidifier is located on the front of the unit – refer to
Figure 4. It consists of a touchscreen display with a LED status indicator, and an On/Off switch. Refer to
Table 1 on page 10 for a description of each of these elements.
1
2
3
Figure 4: Nortec EL Operator Interface
1
2
3
Touchscreen display
LED status indicator
On/Off switch
DANGER!
Risk of electric shock!
The control cabinet in the Nortec EL steam humidifier has live voltage. Turning off the unit
at the On/Off switch does not shut off power to the control cabinet. Touching live parts may
cause severe injury or even death.
Prevention: Shut down the humidifier properly as described in "Shutting Down" on page 58 before accessing the control cabinet in the humidifier.
Nortec EL
2582954_C_EN_1611
Operator Interface
9
Table 1: Operator Interface Element Functions
Element
Description
Touchscreen display
Allows the user to monitor or control the Nortec EL humidifier. Refer to
"Control Software" on page 11 for details of the software interface.
LED status indicator
The status LED is a multi-function LED, which lights up in different colors
depending on the operating status of the humidifier.
Green: indicates that the Nortec EL is operating normally and humidifying.
Flashing Green: indicates that the Nortec EL 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. Note: On units with a dual steam cylinders, it indicates that a
fault condition exists in one or both steam cylinders, and humidification is
stopped in the steam cylinder(s) with the fault condition.
On/Off switch
10
Operator Interface
Allows the user to turn the Nortec EL humidifier on or off.
2582954_C_EN_1611
Nortec EL
4.2
Control Software
The control software runs in the background and controls all the functions of the Nortec EL steam humidifier.
The user interacts with the control software through the screens on the touchscreen display. Details of
the screens are described in the sections below.
Note: The screens shown in this chapter are for representation purposes only, and may differ from what
is displayed on your humidifier.
4.2.1
Home Screen
When the Nortec EL steam 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 5.
1
11
2
3
10
4
5
9
8
7
6
Figure 5: Home Screen Elements
1
2
3
4
5
Current date and time
Operating status message – refer to "Operating Status" on page 12 for details.
Humidity control information – shows the type of control signal and the steam output requested.
Service/Warning/Fault status message – refer to "Maintenance and Fault Status" on page 13 for details.
Steam Cylinder selector. Only available on units with dual steam cylinders, and units controlled by the Nortec Linkup system. Select
the appropriate tab to view its status on the Home screen.
6 <Help> button – access technical support help information. Refer to "Help" on page 14 for details.
7 <Drain> button – manually initiate the drain function. Refer to "Manually Initiate Steam Cylinder Draining" on page 55 for details.
8 <About> button – access the system information. Refer to "System Information" on page 14 for details.
9 <Menu> button – access the Main menu. Refer to "Main Menu" on page 21 for details.
10 Visual indication of the current steam output level.
11 Nortec humidifier model number
Nortec EL
2582954_C_EN_1611
Operator Interface
11
4.2.2
General Navigational Elements
Figure 6 show the general navigational elements/features of the screens on the touchscreen display.
1
2
4
3
5
6
7
10
9
8
Figure 6: General Navigational Elements
1
2
3
4
5
6
7
8
9
10
4.2.3
Return button – cancel and return to previous menu level.
Current menu/sub-menu selection
Previous Tab button – return to the previous tab in the current menu/sub-menu selection.
Next Tab button – continue/go to the current/next tab in the menu/sub-menu selection.
Current tab
Increase button – increase the setpoint value.
Decrease button – decrease the setpoint value.
Help button – access context-sensitive help.
Confirm button – confirm the change/selection. Changes will not be stored if this button is not pressed.
Additional information icon – access additional information.
Operating Status
The operating status area of the Home screen (refer to Figure 5) shows the current operating status
message and an associated status icon. The messages are described in Table 2, and the status icons
are described in Table 3 on page 13.
Table 2: Operating Status Descriptions
12
Message
Description
Standby
The humidifier is in standby mode (no humidity demand).
Draining
The humidifier is draining the steam cylinder.
Idle Drain
There has been no demand for humidity for an extended period of time.
The idle drain function has drained the humidifier. The humidifier will automatically refill when it receives a humidity demand.
Partial Drain
There has been no demand for humidity for an extended period of time.
The partial drain function has drained the water off of the electrodes.
Humidifying
The humidifier is generating steam.
Operator Interface
2582954_C_EN_1611
Nortec EL
Message
Description
Keep Warm
The humidifier is in standby mode, and the keep warm function is activated.
Disabled
The Nortec EL humidifier is disabled by the BMS (building management
system).
Stopped
The humidifier is stopped because a condition with a "Fault" status is
active.
Safety Loop
One or more contacts in the external safety loop is open, so the humidifier
has stopped producing steam.
Blower Pack
The blower pack input signal to the humidifier is open. The humidifier will
not produce steam.
Warning
A condition with a "Warning" status is active. In addition, the message
"Warning" is shown in the maintenance/fault status area of the Home
screen. The humidifier will continue to produce steam when there is a
demand (unless the warning relates to a control signal).
Fault
A condition with a "Fault" status is active. The humidifier is stopped. In addition, the message "Fault" is shown in the maintenance/fault status area
of the Home screen.
Table 3: Status Icon Descriptions
Icon
Description
The icon appears to the left of the operating status message or the maintenance/fault message when the system is working normally.
The icon appears to the left of the maintenance/fault status message
when a maintenance reminder or a condition with a "Warning" status is
active. The humidifier will continue to produce steam when there is a
demand (unless the warning relates to a control signal).
The icon shown appears to the left of the maintenance/fault status message when a condition with a "Fault" status is active. The humidifier stops
producing steam.
4.2.4
Maintenance and Fault Status
The Service/Warning/Fault status area of the Home screen (refer to Figure 5 on page 11) shows maintenance reminders, maintenance 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 Fault History list 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 4,
and the status icons are described in Table 3. Refer to "Nortec EL Warning and Fault List" on page 74 for a
detailed list of warning and fault messages.
Table 4: Maintenance/Fault Status Descriptions
Message
Description
Service info
No faults conditions present.
Cylinder Spent
This message appears if the control software has detected that the steam
cylinder is filled with scale and can no longer achieve the required output.
If the steam cylinder is not replaced, and the maintenance cylinder is not
reset within 72 hours (run time), a corresponding fault message appears.
Replace the steam cylinder, then reset the maintenance cylinder in the
Service menu. Refer to "Removal and Installation of Steam Cylinder" on page 62.
Nortec EL
2582954_C_EN_1611
Operator Interface
13
Message
Description
Warning
A condition with a "Warning" status is active. Depending on the warning
condition, the Nortec EL 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 color.
Fault
A condition with a "Fault" status is active. Depending on the fault condition, the Nortec EL humidifier will not produce steam until the fault condition is cleared.
In addition, the status LED turns red in color.
4.2.5
Help
Touch the <Help> button on the Home screen (refer to Figure 5 on page 11) to view your local technical
support help details.
4.2.6
System Information
Select the <About> button on the Home screen (refer to Figure 5 on page 11) to view the system information for your Nortec EL steam humidifier. The tab structure for this selection is shown below.
About >
"General Tab" on page 15
"Timer Cylinder A (Timer Cylinder B) Tab" on page 16
"Service Cylinder A (Service Cylinder B) Tab" on page 16
"Operating Cylinder A Tab" on page 16
"Operating Cylinder B Tab" on page 18
"Features Tab" on page 19
"Network Tab" on page 20
14
Operator Interface
2582954_C_EN_1611
Nortec EL
General Tab
–– Humidifier Model: shows the model number, as also seen
on the specification label (on the underside and right side
of the humidifier).
–– Cyl. Series: shows the cylinder series used in the
humidifier.
–– Voltage: shows the rated heating voltage of the humidifier.
–– Software Version: shows the current version of the control software. Select the field to update the control software
or the driver board firmware – refer to "Software Update Tab"
on page 49 for details.
–– Serial Number: shows the serial number, as also seen on
the specification label.
–– Graph: allows you to view a graphical presentation of the
recent humidifier performance.
–– Export Trend Data: allows you to save the performance
data as a .csv file to a USB memory stick. Refer to
"Exporting Trend Data" on page 56.
Note: Insert a USB memory stick (formatted to 32-bit FAT
system) into the USB port on the control board before
selecting this function.
Nortec EL
2582954_C_EN_1611
Operator Interface
15
Timer Cylinder A (Timer Cylinder B) Tab
Note: The Timer Cylinder B tab appears only on units with
dual steam cylinders that are set to work in independent
mode. It is identical to the Timer Cylinder A tab.
–– On/Off Timers: shows the current status of the On/Off timers function. Refer to On/Off Timers for more details. Note: A
warning message is displayed whenever the humidifier is
turned off by the On/Off timer.
–– Capacity Timers: shows the current status of the capacity limitation timer function. Refer to Capacity Timers for more
details.
–– Setpoint Timers: shows the current status of the setpoint
timers function. Refer to Setpoint Timers for more details.
Note: This field only appears if Control Mode is set to "RH P"
or "RH PI".
Service Cylinder A (Service Cylinder B) Tab
Note: The Service Cylinder B tab appears only on units with
dual steam cylinders, and is identical to the Service Cylinder A
tab.
–– Cylinder A Installed: shows the date of installation of the
steam cylinder.
–– Cylinder A Hours: shows the number of operating hours
on the steam cylinder since its installation.
–– Sensor Counter: shows the number the number of high
water level sensor activations. A high sensor counter value
may indicate the cylinder is nearing end of life or that a
newly installed cylinder is concentrating cylinder water to
optimal level.
Operating Cylinder A Tab
–– Output: shows the actual output level of steam cylinder A.
–– Current Sensor: shows the actual current draw (in amperes) by steam cylinder A.
–– Control Mode CH 1/3: shows the general control mode
setting for the control signals to the humidifier. Select
the field to choose a different control mode – "Demand",
"RH P", "RH PI" or "On/Off". Refer to Control Mode for more
details.
–– Control Mode CH 2/4: shows the general control mode
setting for the high limit input signal to the humidifier.
Select the field to choose a different control mode –
"Demand", "RH P", "RH PI" or "On/Off". Refer to Control
Mode for more details. Note: This field only appears if
Control Channels is set to "Dual".
16
Operator Interface
2582954_C_EN_1611
Nortec EL
Operating Cylinder A Tab, continued...
–– 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 fixed humidity setpoint
value for steam cylinder A. Select the field to adjust the
setpoint value. Refer to "Setpoint Tab" on page 32 for more
details.
Note: This field appears only if the 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 Control Channels is set to
"Dual".
–– Setpoint Channel 2: shows the high limit setpoint value
for steam cylinder A. Select the field to adjust the value.
Note: This field appears only if the Control Mode is set to
"RH P" or "RH PI", and Control Channels is set to "Dual".
–– Demand: shows the demand the control software has calculated for steam cylinder A, as a percentage of maximum
capacity.
–– Blower Pack: shows the status of the blower pack security loop – "Closed" when the blower pack is connected and
powered, and "Open" when it is not.
Note: When a blower pack is not connected, a jumper
must be installed in the blower pack security loop, and the
status should display "Closed".
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Operating Cylinder B Tab
Note: The Operating Cylinder B tab appears only on units with dual steam cylinders.
–– Output: shows the actual output of steam cylinder B.
–– Current Sensor: shows the actual current draw (in amperes) by steam cylinder B.
–– Linkup Type: shows the current mode of operation of
the steam cylinder in the Linkup chain. Select the field
to choose a different mode – "Series", "Parallel" or
"Independent". Refer to Linkup Type for more details.
–– Channel 1: shows the input signal for Channel 1 of
Cylinder B.
Note: This field is only displayed if Dual Cylinder Mode is set
to "Independent". If configured for demand control, it represents the demand. If configured for RH(P/PI), it represents
sensed humidity.
–– Setpoint Channel 1: shows the fixed humidity setpoint
value for steam cylinder B. Select the field to adjust the
value. Refer to "Setpoint Tab" on page 32 for more details.
Note: This field appears only if the Control Mode is set
to "RH P" or "RH PI", and Dual Cylinder Mode is set to
"Independent".
–– Channel 2: shows the input signal for Channel 2 of
Cylinder B.
Note: This field is only displayed if Dual Cylinder Mode is set
to "Independent" and Control Channels is set to "Dual". If
configured for demand control, it represents the demand. If
configured for RH(P/PI), it represents sensed humidity.
–– Setpoint Channel 2: shows the high limit setpoint value
for steam cylinder B. Select the field to adjust the value.
Note: This field appears only if the Control Mode is set
to "RH P" or "RH PI", and Dual Cylinder Mode is set to
"Independent" and Control Channels is set to "Dual".
–– Demand: shows the demand the control software has calculated for steam cylinder B, as a percentage of maximum
capacity.
–– Blower Pack: shows the status of the blower pack security
loop for cylinder B – "Closed" when the blower pack is connected and powered, and "Open" when it is not.
Note: When a blower pack is not connected, a jumper
must be installed in the blower pack security loop, and the
status should display "Closed".
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Features Tab
–– Manual Capacity A: shows the set capacity limitation
value as a percentage of the maximum capacity of steam
cylinder A. Select the field to adjust the value. Refer to
"Manual Capacity Tab" on page 25 for more details.
–– Manual Capacity B: shows the set capacity limitation
value as a percentage of the maximum capacity of steam
cylinder B. Select the field to adjust the value.
Note: This field appears only on units with dual steam
cylinders.
–– Low Conductivity: shows the status of the low conductivity function. Select the field to enable or disable the function. Refer to Low Conductivity for more details.
–– Idle Mode: shows the idle function that is active when the
humidifier is in standby mode. Select the field to choose a
different function – "Idle Only", "Idle Drain", "Keep Warm",
or "Partial Drain". Refer to Idle Mode for more details.
–– Forced Drain: shows the status of the forced drain function. Select the field to enable or disable the function.
Refer to Forced Drain for more details.
–– Forced Drain Interval: shows the number of run hours
after which the forced drain function is triggered. Select
the field to change the time interval. Refer to Forced Drain
Interval for more details.
–– Short Cycle: shows the status of the short cycle function.
Select the field to enable or disable the function. Refer to
Short Cycle for more details.
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Network Tab
The information shown in this tab varies depending on whether a BAS (building automation system)
protocol is on, and which protocol is selected. If no BAS protocol is on, then only Online Status and IP
Address are shown.
Modbus Network
–– Modbus: shows the current status of the Modbus communications protocol.
Note: This field appears only if the Modbus communication protocol is enabled. Refer to Modbus for more details.
–– Modbus Address: shows the Modbus address of the
Nortec EL steam humidifier.
Note: This field appears only if the Modbus communication
protocol is enabled, and the BACnet communication protocol is disabled.
BACnet Network
–– BACnet: shows the current selection for the BACnet communication protocol – "MSTP" or "BACnet/IP".
Note: This field appears only if the BACnet communication
protocol is enabled. Refer to BACnet for more details.
BACnet MSTP Network
–– BACnet MSTP MAC: shows the actual BACnet MSTP
MAC address for the Nortec EL steam humidifier.
Note: This field appears only if "BACnet MSTP" is enabled. Refer to BACnet for more details.
BACnet IP Network
–– Node ID: shows the actual BACnet node ID for the
Nortec EL steam humidifier.
Note: This field appears only if "BACnet IP" is enabled.
Refer to BACnet for more details.
–– IP Address: shows the IP address of the
Nortec EL steam humidifier.
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4.2.7
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.
0
3
3
5
Figure 7: Main Menu Access
To access the Configuration menu and its features, refer to "Configuration Menu" on page 23.
To access the Service menu and its features, refer to "Service Menu" on page 44.
To access the Administrator menu and its features, refer to "Administrator Menu" on page 48.
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The structure of the Main menu and its sub-menus is shown in Table 5.
Table 5: Main Menu Structure
"Main Menu" on
page 21 >
"Configuration Menu" on
page 23 >
"Features Menu" on
page 23 >
"Water Management Tab" on page 23
"Operation Tab" on page 25 >
"Manual Capacity Tab" on
page 25
"Accessory Board Tab" on page 28
"Control Settings Menu"
on page 29 >
"Basic Tab" on page 29
"PI Control Parameters (A and B)
Tab" on page 32
"Setpoint Tab" on page 32
"RH Alerts Tab" on page 34
"Multi-Unit Operation Tab" on page 35
"General Menu" on
page 37 >
"Basic Tab" on page 37
"Communication Menu"
on page 39 >
"Remote Enable Tab" on page 39
"Time/Date Tab" on page 38
"Network Parameters Tab" on page 39
"BMS Timeout Tab" on page 40
"Modbus Parameters Tab" on page 41
"BACnet Parameters Tab" on page 41
"Remote Fault Board Tab" on page 43
"Service Menu" on
page 44 >
"Startup Code Tab" on page 44
"General Service Tab" on page 44
"Fault/Service History Tab" on page 45
"Diagnostics Tab" on
page 46 >
Input Diagnostics tab >
"Cylinder (A and B) Tab" on
page 46
Relay Diagnostics tab >
"Remote Fault Board Tab" on
page 47
"Accessory Board Tab" on
page 47
"Administrator Menu" on
page 48 >
"Password Setting Tab" on page 48
"Software Update Tab" on page 49
"Software Settings Tab" on page 49
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4.2.7.1 Configuration Menu
The Configuration menu lets you configure the operation of the Nortec EL steam humidifier. The menu
and sub-menu items are discussed below. Refer to Table 5 on page 22 for the menu structure.
Features Menu
Each tab under the Features Menu is discussed below.
Water Management Tab
–– Drain Cool: allows you to enable or disable the optional
drain water cooling function.
Options:
On or Off
Factory setting:
On
–– 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 steam cylinder is
drained after Idle Drain time passes
without demand.
Keep Warm – the water in the steam
cylinder is kept warm while in standby mode.
Partial Drain – the steam cylinder
is drained until water is below the
electrodes after Idle Drain time passes
without a demand.
Factory setting:
Idle Only
–– 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 hours
Factory setting:
72 hours
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Water Management Tab, continued...
–– Forced Drain: allows you to enable or disable the forced
drain function, which drains the steam cylinder to remove
minerals every time a fixed number of run hours passes.
It can be useful when operating with water that has high
conductivity.
Options:
On or Off
Factory setting:
Off
–– Forced Drain Interval: allows you to set the number of
run hours after which a forced cylinder drain takes place.
Setting range:
1-100 hours
Factory setting:
72 hours
–– D(rain) Factor: allows you to adjust the drain time calculated by the Nortec EL's auto-adaptive drain algorithm.
Setting range:
0.0-100.0
Factory setting:
1.0
–– Drain Mode: allows you to select when the humidifier will
perform a drain because current draw exceeds requirements. Note: Float ED can respond more quickly to drops
in demand.
Options:
Fixed ED – corrective drain occurs
when current draw exceeds 115% of
full steam capacity.
Float ED – corrective drain occurs
when current draw exceeds 115% of
steam demand.
Factory setting:
Fixed ED
–– Foam Mode: allows you to select the foam detection
function in the steam cylinder. The humidifier will perform
drains to attempt to eliminate foaming, if it is detected.
Options:
Basic – detects foaming by monitoring current before and after the high
water level sensor is activated.
Advanced – detects foaming by
using an external float. Note: This
option requires the installation of an
optional hardware kit.
Off – performs no foam detection.
Factory setting:
Basic
–– Cal. Drain Mode: allows you to select how the steam cylinder is drained in order to control conductivity of water in
the cylinder. Both Prefill and Multi can prevent water from
draining off the electrode when long drains are required.
Options:
Prefill – fills to a preset level first,
then drains.
Basic – drains for calculated drain
time.
Multi – performs multiple short drains
and fills until the accumulated time
of the short drains is equal to calculated drain time.
Factory setting:
Prefill
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Operation Tab
–– Manual Capacity A: allows you to select the Manual
Capacity menu, shown below. This menu allows you to set
a fixed maximum output capacity, or set a time-dependant
maximum output capacity using a timer function.
Manual Capacity Tab
Allows you to set a fixed
maximum output capacity
without the use of timers.
–– Capacity Timers: allow you to enable or disable
the timer function, and configure up to eight different
events with different output capacities.
Timer: allows you to enable or disable the Manual
Capacity timer function to reduce maximum output during selected days and times of the day.
Options:
On or Off
Factory setting: Off
Event "n": allows you to define a maximum output that
will be allowed by: day of the week or over a range of
days, the start time and capacity. "n" represents events
1-8. Each event can also be turned off individually.
Note: The settings for an event are active up to the
next event. Check the timer settings make sense, as
the software does not check the plausibility of the settings. At least two events must be set. The On/Off timer
overrides the Capacity timer.
–– Manual Capacity A: allows you to set a fixed maximum output capacity at the specified time and date.
Setting range: 20-100%
Factory setting: 100%
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Operation Tab, continued...
–– 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.
Timer: allows you to enable or disable the On/Off timer
function.
Options:
On or Off
Factory setting:
Off
Event "n": allows you to set whether the humidifier can or
cannot produce steam by: day of the week or over a range
of days, the start time and operating mode of the steam
cylinder. "n" represents events 1-8. Each event can also
be turned off individually.
Note: The settings for an event are active up to the next
event. Check the timer settings make sense, as the
software does not check the plausibility of the settings. At
least two events must be set. The On/Off timer overrides
the Capacity timer and Setpoint timer.
–– Ground FI: allows you to set the main contactor to disengage whenever the drain valve is activated. This prevents
current leakage to the drain, which could trip sensitive GFI
circuitry in the building.
Options:
On – the main contactor is disengaged during draining.
Off – the main contactor remains
engaged if humidification is in
progress.
Factory setting:
Off
–– Fill Stop: allows you to set the fill valve to close during filling (to prevent overshooting the demand) when the heating current draw equals 95% of the demand.
Options:
On – the fill valve closes when the
current draw equals 95% of demand.
Off – the fill valve remains open until
100% of the demand is achieved.
Factory setting:
Off
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Operation Tab, continued...
–– Overcurrent:
CAUTION! Do not adjust this value unless instructed to
do so by a Nortec representative.
Setting range:
Factory setting:
0.0-2.0
1.5
–– Low Conductivity: allows you to adjusts the end-ofcylinder-life detection to prevent false end-of-cylinder-life
detection when conductivity of the supply water is less
than 250 μS/cm.
Options:
On – use when conductivity of the
supply water is less than 250 μS/cm.
Off – use when conductivity of the
supply water is greater than 250 μS/
cm.
Factory setting:
Off
–– Short Cycle: allows you to enable or disable the function
that enforces a time delay between the humidifier stopping
and restarting steam production (to reduce mechanical
wear on contactors and other peripheral devices). This
function is typically used with On/Off controllers. It can also
be useful if a high limit humidistat is cycling the humidifier
on/off too frequently.
Options:
On – the humidifier runs in short
cycle mode.
Off – the humidifier cycles normally.
Factory setting:
Off
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Accessory Board Tab
Note: This tab requires the optional accessory relay PCB (printed circuit board) be installed in your
humidifier. The accessory relay PCB is used to control an external fan in the ventilation system, or an
external valve for flushing the water supply line.
–– Fan On: allows you to enable or disable the external fan
connected to the corresponding relay on the accessory
relay PCB.
Options:
On – enables the relay.
Off – disables the relay.
Factory setting:
Off
–– Fan Delay: allows you to set the time duration for which
the external fan continues to run (to remove any additional steam that may have continued to enter the air duct
post-humidification).
Setting range:
0-300 seconds
Factory setting:
60 seconds
–– Hygiene Flush: allows you to enable or disable an external flushing valve connected to the corresponding relay
on the accessory relay PCB. Flushing occurs only when
the humidifier is in standby mode, according the Hygiene
Flush Interval and Hygiene Flush Time settings described
below.
Options:
On – performs hygiene flush at
specified intervals.
Off – disables hygiene flush.
Factory setting:
Off
Note: The following two settings are only available if the
hygiene flush function is enabled.
–– Hygiene Flush Interval: allows you to set the time
duration after which the water supply line is flushed.
Setting range: 1-999 hours
Factory setting: 24 hours
–– Hygiene Flush Time: allows you to set the time duration of the flush.
Setting range: 1-3600 seconds
Factory setting: 5 seconds
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Control Settings Menu
Each tab under the Control Settings menu is discussed below. Refer to the structure of the tabs in Table 5
on page 22.
Basic Tab
–– Source: allows you to select the source of incoming control/humidity signal to the humidifier.
Options:
Analog – the control/humidity signals
are from analog sensors or humidistats connected to the humidifier's low
voltage terminal block.
Modbus – the control signals are
from the BMS via the Modbus communication protocol.
BACnet/IP – the control signals are
from the BMS via the BACnet/IP
communication protocol.
BACnet/MSTP – the control signals
are from the BMS via the BACnet/
MSTP communication protocol.
LonWorks – the control signals are
from the BMS via the LonWorks
communication protocol.
Factory setting:
Analog
–– Dual Cylinder Mode: allows you to configure the operation of humidifiers with dual steam cylinders. Note: This
function appears only on units with dual steam cylinders.
Options:
Parallel – the cylinders operate in
parallel based on humidifier demand.
This results in a lower turn-down
ratio, but even wear on both steam
cylinders.
Series – the cylinders are modulated in sequence to meet humidifier
demand. Cylinder A will operate from
0-50% demand, and Cylinder B will
operate from 51-100% demand.
Independent – the steam cylinders
work independently based on control
signals from two separate zones.
Factory setting:
Series
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Basic Tab, continued...
–– Control Mode CH 1/3: allows you to select the general
control mode for the incoming control signal.
Options:
Demand – control signal is from an
external controller.
RH P – control signal uses the
internal P (proportional) controller
to interpret sensed humidity into
demand.
RH PI – control signal uses the internal PI (proportional-integral) controller to interpret sensed humidity into
demand.
On/Off – control signal is from an
external On/Off humidistat.
–– Control Mode CH 2/4: allows you to select the general
control mode for the incoming high limit signal. Note: This
setting appears only if Control Channels is set to "Dual".
Options:
Demand – control signal is from an
external controller.
RH P – control signal uses the
internal P (proportional) controller
to interpret sensed humidity into
demand.
RH PI – control signal uses the internal PI (proportional-integral) controller to interpret sensed humidity into
demand.
On/Off – control signal is from an
external On/Off humidistat.
Factory setting:
Demand
Note: Channel 3 and 4 are used to control cylinder B when
Dual Cylinder Mode is set to "Independent"; otherwise they are
ignored.
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Basic Tab, continued...
–– Control Channels: allows you set whether the humidifier
is controlled by one or two signals.
Options:
Single – single control.
Dual – Two control signals (typically
a control, plus a high limit signal).
Factory setting:
Dual
–– Signal Type Channel 1/3: allows you to select the signal
type of the incoming control signal. Note: This setting is
ignored if signal Source is not set to "Analog". Channel 3
applies only to units with dual steam cylinders set to operate in independent mode.
Options:
0-5V, 1-5V, 0-10V, 2-10V, 0-20V,
0-16V, 3.2-16V, 0-20mA, 4-20mA
Factory setting:
0-20V
–– Signal Type Channel 2/4: allows you to select the signal
type of the incoming high limit signal. Note: This setting
is ignored if signal Source is not set to "Analog". Channel 4
applies only to units with dual steam cylinders set to operate in independent mode.
Options:
0-5V, 1-5V, 0-10V, 2-10V, 0-20V,
0-16V, 3.2-16V, 0-20mA, 4-20mA
Factory setting:
0-20V
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PI Control Parameters (A and B) Tab
Note: The PI Control Parameters tab appears as tab A and tab B on units with dual steam cylinders
set to operate in independent mode. This menu appears only if Control Mode is set to "RH P" or "RH PI".
–– Setpoint Channel 1: allows you to select the Setpoint
menu, shown below. This menu allows you to set the
humidifier to operate at different humidity setpoint values
(% RH) using a timer function, or at a fixed humidity setpoint value.
Setpoint Tab
Allows you to set a fixed
humidity setpoint without the
use of timers.
–– Setpoint Timers: allow you to enable or disable the
timer function, or configure up to eight different events
with different humidity setpoint values.
Timer: allows you to enable or disable the Setpoint
timer function.
Options:
On or Off
Factory setting: Off
Event "n": allows you to define a setpoint that will be
in effect by: day of the week or over a range of days,
the start time and capacity. "n" represents events 1-8.
Each event can also be turned off individually.
Note: The settings for an event are active up to the
next event. Check the timer settings make sense, as
the software does not check the plausibility of the settings. At least two events must be set. The On/Off timer
overrides the Setpoint timer.
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Setpoint Tab, continued...
–– Setpoint Channel 1: allows you to set the humidifier to
operate at a fixed humidity setpoint value at the specified
time and date.
Setting range:
0-95% RH
Factory setting:
40% RH
PI Control Parameters Tab, continued from previous page...
–– Band Channel 1: 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.
Setting range:
6-65%
Factory setting:
15%
–– ITime Channel 1: allows you to set the integral time for
error corrections by the internal P/PI controller.
Setting range:
1-60 minutes
Factory setting:
5 minutes
–– Setpoint Channel 2: allows you to set the high limit
setpoint value. Note: This setting appears only if Control
Channels is set to "Dual".
Setting range:
0-95% RH
Factory setting:
80% RH
–– Band Channel 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: This setting appears
only if Control Channels is set to "Dual".
Setting range:
6-65%
Factory setting:
15%
–– Damp Channel 2: allows you to set the time duration after
which the high limit setpoint value takes control of the
demand signal. Note: This setting appears only if Control
Channels is set to "Dual".
Setting range:
1-60 seconds
Factory setting:
5 seconds
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RH Alerts Tab
Note: This tab appears only if Control Mode is set to "RH P" or "RH PI".
–– RH Alerts: allows you to enable or disable the alert function that warns if sensed humidity is too high or too low.
Options:
On – enables the function.
Off – disables the function.
Factory setting:
Off
Note: The following four 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%
–– Enable Input: allows you to enable or disable steam
production using an external contact. When set to On,
steam production will not be allowed unless the points
of terminal X11 on the driver board are closed.
Options:
On – enables the function.
Off – disables the function.
Factory setting: On
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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 control signal. It also allows
you to designate the humidifiers to operate as the main or
extension unit(s).
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 are only available
on the main unit when 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.
Independent – should not be used
for Linkup.
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
Refer to "Configuring for Multi-Unit Operation" on page 51 for setup
procedure.
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Multi-Unit Operation Tab, continued...
–– Sequence Interval: allows you to set the time interval
used by the control software to establish a new operating sequence to balance operating hours of linked humidifiers. Note: This setting is available only if Sequence
Rotation is enabled.
Setting range: 24-1000 hours
Factory setting: 24 hours
–– Linkup Timeout: allows you to set the maximum time
limit that the units in the Linkup chain can operate without communication to each other before they generate
a timeout warning message.
Setting range: 60-120 seconds
Factory setting: 60 seconds
–– Zero Out A: shows the percentage value of the system demand signal at which cylinder A of the unit being
examined is switched on.
–– Full Out A: shows the percentage value of the system
demand signal at which cylinder A of the unit being
examined achieves 100% demand.
–– Zero Out B: shows the percentage value of the
system demand signal at which cylinder B of the unit
being examined is switched on.
–– Full Out B: shows the percentage value of the system
demand signal at which cylinder B of the unit being
examined achieves 100% demand.
Note: Zero Out B and Full Out B are only displayed if the
unit being examined has dual cylinders.
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General Menu
Each tab under the General menu is discussed below. Refer to Table 5 on page 22 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, Czeck, 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 set the brightness level of
the LED status indicator (refer to Figure 4 on page 9).
Setting range:
1-100
Factory setting:
50
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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:
12 hour
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Communication Menu
Each tab under the Communication menu is discussed below. Refer to Table 5 on page 22 for the menu
structure.
Remote Enable Tab
–– Allow Remote Disable: allows you set whether steam
production of the humidifier can be remotely disabled via
the BMS.
Options:
Yes – remote disable permitted.
No – remote disable not permitted.
Factory setting:
Yes
Network Parameters Tab
The following settings are used only for communications via
the integrated BACnet IP protocol, Nortec Online 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".
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Network Parameters Tab, continued...
–– 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 EL steam humidifier.
–– Host Name: displays the host name for the
Nortec EL steam humidifier.
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 seconds
Factory setting:
300 seconds
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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:
On or Off
Factory setting:
Off
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 EL humidifier is a slave-only
BACnet MSTP device.
Off – disables BACnet communications protocol.
Factory setting:
Off
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BACnet Parameters Tab, continued...
The following settings appear only if BACnet is set to
"BACnet/IP".
–– Device Name: allows you to assign a name to the
humidifier for communications over the BACnet/IP
protocol.
–– 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
The following settings appear only if BACnet is set to
"MSTP". Note: When set to BACnet MSTP the Nortec EL
communicates as a BACnet slave only. BACnet master
functionality requires installation of optional hardware.
–– Parity: allows you to set the parity bit for the data
transfer.
Options:
None, Even or Odd
Factory setting: Even
–– Baud Rate: 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
–– Device name: allows you to assign a device name to
the humidifier for communications over the BACnet/
MSTP protocol.
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BACnet Parameters Tab, continued...
–– 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/MSTP
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
Remote Fault Board Tab
–– Indication: allows you to select how system warnings are
handled by the optional remote fault indication PCB.
Options:
Warning – activates the Service
relay in the remote fault indication
PCB when any system warnings or
notifications are triggered.
Service – activates the Service relay
in the remote fault indication PCB
only when service-related warnings
are triggered.
Factory setting:
Warning
–– Safety Chain Indication: allows you to enable or disable
the function that activates the Service relay in the optional
remote fault indication PCB when the safety chain is open.
Options:
Yes – activates the Service relay in
the remote fault indication PCB if the
safety chain is open.
No – safety chain warning does not
activate the service relay.
Factory setting:
No
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4.2.7.2 Service Menu
The Service menu lets you reset the cylinder when it is replaced, access the fault and maintenance
history lists and perform diagnostics. Refer to Figure 7 on page 21. Refer to Table 5 on page 22 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 5 on page 11.
Startup Code Tab
Note: This tab only appears if the humidifier is being operated for the very first time, or the startup code
has been enabled. Contact Nortec to request a startup code, then enter it in the field described below.
–– Startup Code: allows you to enter the startup code required to operate the humidifier.
General Service Tab
–– Cylinder A Reset: allows you to reset the Cylinder Spent
service message after replacing cylinder A. A warning
message is displayed asking you to confirm the reset.
Options:
Yes or No
Factory setting:
No
–– Cylinder B Reset: allows you to reset the Cylinder Spent
service message after replacing cylinder B. A warning
message is displayed asking you to confirm the reset.
Note: This setting appears only on units with dual steam
cylinders.
Options:
Yes or No
Factory setting:
No
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Fault/Service History Tab
Note: Fault and maintenance history events can only be correctly analysed if the date and time are set
correctly.
–– Fault History: allows you to view the fault history list.
–– Service History: allows you to view the service history list.
–– Export History: allows you export the fault and service
history list to a USB memory stick. Refer to "Exporting Fault
and Service History" on page 79.
Note: Insert a USB memory stick (formatted to 32-bit FAT
system) into the USB port on the control board before
selecting this function.
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Diagnostics Tab
–– Input Diagnostics: allows you to access the Input
Diagnostics menu which shows the current status of all
inputs to the integrated control board, as well as calculated
drain parameters.
Cylinder (A and B) Tab
Note: The Cylinder B tab appears only on units with dual
steam cylinders.
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Diagnostics Tab, continued...
–– Relay Diagnostics: allows you to access the Relay
Diagnostics menu to enable or disable the relays on the
optional remote fault board or the optional accessory relay
board. Note: The diagnostic menu is only displayed after
a warning message indicating that the humidifier will be
placed in standby mode is acknowledged.
Remote Fault Board Tab
Accessory Board Tab
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4.2.7.3 Administrator Menu
The Administrator menu lets you enable and disable password control, or install updates for the control
software or the firmware for the driver board(s). Refer to Figure 7 on page 21. Refer to Table 5 on page 22
for the menu structure.
Each tab under the Administrator menu is discussed below.
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.
–– 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.
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Software Update Tab
–– Software Update: allows you to update the control software. Refer to "Installing Software and Firmware Updates" on
page 69.
–– Driver Board A.DB.A: allows you to update the driver
board firmware for steam cylinder A. Refer to "Installing
Software and Firmware Updates" on page 69.
–– Driver Board A.DB.B: allows you to update the driver
board firmware for steam cylinder B. Note: This setting
appears only on units with dual steam cylinders. Refer to
"Installing Software and Firmware Updates" on page 69.
Software Settings Tab
–– Load Contact Info Page: allows you to update the contract/technical support information from a file on a USB
memory stick. Please contact your Nortec representative
for assistance with this.
–– Manually Load Contact Info: allows you manually enter
the contract/technical support information. Please contact
your Nortec representative for assistance with this.
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4.3
Software Configuration
The Nortec EL steam 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, or configure the humidifier to operate as part of a multi-unit system.
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".
•
Dual Cylinder Mode (on large units with dual steam cylinders only) – select the mode of operation
("Parallel", "Series" or "Independent") of the two steam cylinders.
If two separate sets of control signals are available to the humidifier from two separate zones
that require humidification, select "Independent" to operate the two steam cylinders independent
of each other. Otherwise, select "Parallel" or "Series", as appropriate.
•
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 CH1/3 and Control Mode CH2/4 – select the general control mode for the incoming control
and 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. Note: Control Mode CH2/4 must only be
set if Control Channels is set to "Dual".
Note: On Nortec EL humidifiers with dual steam cylinders, if the Dual Cylinder Mode selection is
set to "Independent" and the Control Channels selection is set to "Dual", the Control Mode setting
and the Signal Type setting (described below) also extends to the control signals on Channel 3
and Channel 4.
•
Signal Type Channel 1/3 and Signal Type Channel 2/4 – select the signal type of the incoming control
signal if Control Mode is set to "Demand", "RH P" or "RH PI", and signal Source is set to "Analog".
Select from "0-5V", "1-5V", "0-10V", "2-10V", "0-20V", "0-16V", "3.2-16V", "0-20mA", or "4-20mA",
as appropriate for the external control device connected to Channel 1. Note: Signal Type Channel
2/4 must only be set if Control Channels is set to "Dual".
•
Enable Input – if an external control has been connected to terminal X11 on the Nortec EL's driver
board to remotely disable the humidifier, then set the Enable Input function to "On", if required.
Note: The external contact connected to "X11" on the driver board can be used to enable or
disable the humidifier. This is in addition to any On/Off devices in the safety loop or the On/Off
input connected to Channel 1 that are used to enable or disable the humidifier.
This concludes the basic setup of the control software.
Note: The humidifier can also be controlled using Capacity Timers, or Setpoint Timers, or On/Off Timers. If
assistance is required to set it up, please contact your Nortec representative.
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4.3.2
Configuring for Multi-Unit Operation
Set up the control software for multi-unit operation as described below. A maximum of six humidifiers
can be set up in a "main-extension" configuration using Nortec'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 50.
3. Set Linkup to "Main" on the humidifier that will be designated "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.
•
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.
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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5
Operation
5.1
General
Personnel Qualifications
The Nortec EL steam humidifier must only be operated by personnel who are adequately qualified, well
trained and are authorized by the customer.
Safety
Certain operations of the Nortec EL steam humidifier may require the user to access the control cabinet
or plumbing cabinet, which may expose the user and equipment to the hazards described below.
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Shut down the unit as described in "Shutting Down" on page 58 before opening the door
panels.
WARNING!
Risk of severe burns from exposure to hot steam vapours!
The Nortec EL steam humidifier produces hot steam vapours. Contact with the hot steam
vapours can result in severe burns.
Prevention: Never open the plumbing cabinet in the humidifier while it is operating, or expose skin
to escaping steam vapours.
WARNING!
Risk of severe burns from contact with hot surfaces!
Components of the steam system may reach 212°F (100°C) during operation. Contact with
the hot surfaces can result in severe burns.
Prevention: Avoid touching any components in the plumbing cabinet until the unit has cooled down.
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). Refer to ANSI/ESD-S20.20.
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5.2
Operating Procedures
5.2.1
Starting Up
Start up the Nortec EL steam humidifier as follows:
1. Set the On/Off button to the On position – refer to Figure 4 on page 9.
The control software then starts initializing and performs system checks. When initialization and
system checks are completed successfully, the Home screen is displayed on the touchscreen display
– refer to Figure 5 on page 11. The humidifier goes into the normal operating mode.
If a valid humidity demand signal is present the contactor closes, and after a 60 second delay the
fill valve opens and begins to fill the steam cylinder(s) with water. When the water level rises and
makes contact with the electrodes, the water starts to heat and the status LED turns green in color.
Depending on the conductivity of the water, it may take approximately 30-60 minutes to generate
steam on the first startup.
Note: If the water conductivity is low, it is possible that the humidifier does not output steam at full
capacity during the first few hours (or even days) of operation. This is quite normal. As vaporization
continues the mineral concentration increases and the conductivity of water reaches an optimum
level, at which point the humidifier will start to output steam at full capacity.
If there is no humidity demand the status LED turns to a flashing green, and the humidifier goes into
standby mode to await the next humidity demand signal.
5.2.2
Remote Monitoring
The Nortec EL steam humidifier can be monitored remotely if it is equipped with an optional remote fault
indication board and wired to a remote monitoring system. Table 6 describes the function of each relay
on the board. Refer to Indication and Safety Chain Indication for additional details.
Table 6: Remote Fault Indication 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 if the cylinder is
spent, and/or if a warning condition is present.
Steam
A humidity demand is present, and the humidifier is producing
steam.
Unit On
The humidifier has power, and the On/Off switch is in the On
position.
The Nortec EL steam humidifier may also be monitored remotely from a laptop or desktop computer using
the ethernet port on the control board. Please contact your local Nortec representative for assistance.
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5.2.3
Inspections During Operation
Perform regular inspection of the Nortec EL steam humidifier and the humidification system when it is
in operation. Inspect the following:
…… Check the water and steam connections for any leakages.
…… Check the humidifier and other system components have not shifted from their mountings, and are
fastened securely.
…… Visually check the electrical wiring for any damage.
…… Check the Home screen on the humidifier for maintenance or alarm messages.
If any irregularities (leakages, fault messages or damaged components) are found, shut down the
Nortec EL steam humidifier before performing service – refer to "Shutting Down" on page 58. If you require
assistance, contact your Nortec representative for assistance.
5.2.4
Manually Initiate Steam Cylinder Draining
Figure 8: Drain Screens
Manually initiate draining of the steam cylinder(s) in the Nortec EL steam humidifier as follows. Refer
to Figure 8.
1. Select the <Drain> button on the Home screen.
2. If you have a dual cylinder humidifier select the cylinder(s) to drain, then press the check mark.
3. Select the <Yes> button on the confirmation screen. If humidification is in progress, it is interrupted
and the drain valve empties the steam cylinder(s). A progress bar shows the status of the drain cycle.
Select the <Cancel> button at any time to interrupt the drain cycle and return to the previous screen.
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 steam cylinder again.
Note: If the control software/drain valve does not function properly, shut down the humidifier – refer
to "Shutting Down" on page 58. Then disconnect the fill hose (fill cup to cylinder) at the fill cup, and
drain the cylinder. Refer to Figure 9 on page 56.
WARNING!
Cylinder may contain hot water or steam. Risk of severe burn injury!
Prevention: Always wait for the unit to cool down to a safe temperature before draining the
cylinder manually using the fill hose.
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2
1
Figure 9: Disconnecting Fill Hose
1
2
5.2.5
Fill hose (fill cup to cylinder) – disconnected at the fill cup
Hose connection, fill cup
Exporting Trend Data
Export the humidifier performance data to a USB memory stick as follows. Refer to Figure 10 on page 57.
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Shut down the humidifier properly at the external disconnect switch before accessing
the control board in the humidifier.
1. Set the On/Off button to the Off position.
2. 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.
3. Remove the door panel on the control cabinet in the humidifier – refer to "Removal and Installation of
Door Panels" on page 61.
CAUTION! Any previous trend data on the memory stick will be over-written.
4. Carefully insert a USB memory stick (formatted to 32-bit FAT system) into the USB port. Make sure
that the maximum length of the memory stick does not exceed 3 in (75 mm).
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5. Close the front panel, and install the door panel.
6. Remove the lock and tag from the external disconnect switch, and restore power to the humidifier.
7. Set the On/Off button to the On position.
8. When the Home screen appears, select the <About> button, then General tab > Export Trend
Data. The humidifier performance data for the previous 24 hours is then downloaded to the memory
stick as a file labelled TREND.csv.
Press the <Cancel> button at any time to abort the operation.
9. Repeat Step 1 to Step 3, and carefully remove the USB memory stick.
10.Close the front panel. Install the door panel making sure that it is fastened securely – refer to "Removal
and Installation of Door Panels" on page 61.
11. Repeat Step 6 and Step 7 to power up the humidifier.
3
1
2
Figure 10: Accessing the Control Board
1
2
3
Nortec EL
Control board
USB port
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5.2.6
Shutting Down
DANGER!
Risk of electric shock!
The control cabinet in the Nortec EL steam humidifier has live voltage. Turning off the unit
at the On/Off switch does not shut off power to the control cabinet. 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 EL steam humidifier as follows:
1. If the humidifier needs maintenance, or it needs to be taken out of service for long-term storage, manually initiate drain of the steam cylinder(s). Refer to "Manually Initiate Steam Cylinder Draining" on page 55.
2. Shut off the water supply to the humidifier.
3. Make a note of the fault code, if any, displayed on the Home screen.
4. Set the On/Off button to the Off position.
5. 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.
WARNING!
Risk of severe burns from contact with hot surfaces!
Components of the steam system may reach 212°F (100°C) during operation. Contact
with the hot surfaces can result in severe burns.
Prevention: Avoid touching any components in the plumbing cabinet until the unit has cooled
down to room temperature.
6. Wait for the unit to cool down to a safe temperature before performing any maintenance inside the
plumbing cabinet.
5.2.7
Restarting After Shutdown
Restart the Nortec EL steam humidifier after a shutdown as follows:
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.
1. Examine the humidifier and other system components for damage. Check for loose or damaged
electrical connections, and make sure that the humidifier and its components have not shifted from
their mountings, and are fastened securely.
2. Turn on the water supply to the humidifier, and check for any water leaks.
3. Install both door panels. Make sure that they are fastened securely. Refer to "Removal and Installation
of Door Panels" on page 61.
4. Remove the lock and tag from the external disconnect switch, and restore power to the humidifier.
5. Set the On/Off button to the On position.
The humidifier then powers up and awaits a humidity demand signal to resume steam production.
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6
Maintenance
6.1
General
Perform only those maintenance procedures described in this manual, and follow all instructions closely.
Use only original Nortec replacement parts.
Personnel Qualifications
Maintenance work in the Nortec EL steam 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
Certain maintenance tasks in the Nortec EL steam humidifier may require the user to access the inside
of the control and plumbing cabinets in the humidifier, which may expose the user and equipment to the
hazards described below.
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Shut down the unit as described in "Shutting Down" on page 58 before performing any
maintenance work.
WARNING!
Risk of severe burns from exposure of skin to hot water or hot steam vapours!
The water in the steam cylinder(s) in the humidifier can be up to 203°F (95°C). Contact with
the hot water or hot steam vapours can result in severe burns.
Prevention: Shut down the unit as described in "Shutting Down" on page 58 and wait for the unit to
cool down before performing any maintenance work.
WARNING!
Risk of severe burns from contact with hot surfaces!
Components of the stream system may reach 212°F (100°C) during operation. Contact with
the hot surfaces can result in severe burns.
Prevention: Avoid touching any components in the plumbing cabinet until the unit has cooled down
to room temperature.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidifier are sensitive to electrostatic discharge (ESD).
Prevention: Take appropriate measures to protect the electronic components inside the unit against
damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.
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6.2
Maintenance List
Regular maintenance of the Nortec EL steam humidifier is a requirement for maintaining the safety
and operational efficiency of the humidifier. Maintenance of the Nortec EL steam humidifier is broken
down into two categories – regular replacement of the steam cylinder(s), and regular maintenance of
the steam humidifier.
6.2.1
Regular Replacement of Steam Cylinder(s)
The Nortec EL steam humidifier control software monitors the performance of the cylinder and indicates
when a cylinder is full of scale and no longer able to achieve full output.
When the control software detects the cylinder can no longer achieve full output, the "Cylinder Spent"
warning message appears on the Home screen. Replace the steam cylinder(s) – refer to "Removal and
Installation of Steam Cylinder" on page 62.
Note: If the steam cylinder is not replaced, and the maintenance counter is not reset within 72 hours
(run time), a corresponding fault message appears.
6.2.2
Regular Maintenance of Steam Humidifier
Regular maintenance should be performed on the Nortec EL steam humidifier at least once a year, and
whenever the cylinder is replaced.
Table 7: Maintenance List
Component
Description
Frequency
Drain valve
Inspect and clean, if necessary – refer to "Removal and
Installation of Drain Valve" on page 64.
During cylinder change
Fill valve
Remove and clean the fill valve strainer.
Annually
Drain cup
Inspect and clean, if necessary.
Annually
Fill cup and hoses
Inspect and clean, if necessary.
Annually
Steam installation
Inspect the steam and condensate hoses in the humidifier for cracks, and check that they are fastened securely.
Replace cracked hoses.
Annually
Water installation
Inspect the water hoses for cracks, and check that they
are fastened securely. Replace cracked hoses.
Annually
Clean the water filter in the supply line.
60
Electrical installation
Inspect all cables for damage and insulation breakdown.
Replace damaged cables. Make sure that all cables are
securely properly.
Annually
Main electrical
contactor(s) (K1)
Replace the main electrical contactor(s) (K1). Refer to the
instructions that come with the replacement contactors.
At least once
every 5 years
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6.3
Maintenance Procedures
Make sure that the humidifier is shut down properly as described in "Shutting Down" on page 58, and observe all safety precautions before performing any maintenance work on the humidifier.
6.3.1
Removal and Installation of Door Panels
Removal
Remove the two door panels in the humidifier as follows. Refer to Figure 11.
1. Turn the captive screw in each door panel counter-clockwise with a screwdriver.
2. Lift up the door panel slightly so that the tabs clear the notches in the cabinet, then carefully remove
the panel.
6
7
5
1
4
2
3
Figure 11: Door Panels Removal and Installation
1
2
3
4
Stationary panel
Door panel, control cabinet
Captive screw
Door panel, plumbing cabinet
5
6
7
Top tab, door panel
Long tab, door panel
Notch, cabinet
Installation
Install the two door panels in the humidifier as follows. Refer to Figure 11.
1. Position each door panel so that the two tabs in the top rear of the panel align with the notches in
the cabinet.
2. Lower the door panel to seat the tabs in the notches, while ensuring that the long tab on the side of
the panel slides behind the stationary panel.
3. Make sure that the door panel fits flush on the front and the side. Turn the captive screw in the door
panel clockwise with a screwdriver to secure the door panel. Check that it is fastened securely.
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6.3.2
Removal and Installation of Steam Cylinder
Removal
Remove the steam cylinder as follows. Refer to Figure 12.
WARNING!
Risk of severe burns from contact with hot surfaces, steam or hot water!
The steam cylinder temperature may be up to 212°F (100°C), and may contain steam or hot
water at up to 212°F (100°C). Contact with the hot surfaces, steam vapors or hot water can
result in severe burns.
Prevention: Avoid touching any components in the plumbing cabinet until the unit has cooled down
to room temperature.
1. Shut down the humidifier as described in "Shutting Down" on page 58.
2. Remove the door panels – refer to "Removal and Installation of Door Panels" on page 61.
3. Loosen the hose clamp that secures the steam hose to the steam outlet in the cylinder, and slide
the clamp up on the hose.
4. Disconnect all the electrode plugs from the electrodes in the steam cylinder.
5. Disconnect the plug from the high water level sensor.
6. Release the tab in the strap that secures the steam cylinder, and pull the strap open.
7. Tilt the steam cylinder forward so the steam outlet disengages from the steam hose, then remove
the cylinder from the drain valve.
8. Remove and discard the O-ring in the drain valve.
Installation
Install the steam cylinder as follows. Refer to Figure 12 on page 63.
1. For safety reasons, always install a new O-ring in the drain valve when installing a new steam cylinder. Lubricate the O-ring with water – do not use grease or oil, or any other lubricant.
2. Make sure that the new steam cylinder is of the same model as the one that was removed. The
model number for the steam cylinder is located on the upper left corner of the cylinder label.
3. Holding the cylinder at a slight angle, carefully slide the bottom of the steam cylinder into the drain
valve.
4. Pull the steam hose forward to engage the steam outlet in the cylinder. Tip the cylinder back while
pulling the steam hose over the steam outlet until the cylinder is seated in the drain valve and the
steam hose is engaged on the steam outlet.
5. Install the strap and secure the steam cylinder in place.
CAUTION!
Risk of damage to the steam outlet on the cylinder!
The steam outlet in the steam cylinder is made of plastic. Do not over-tighten the hose clamp.
A leaky steam hose can cause damage to the components inside the humidifier.
6. Pull the hose down and torque the hose clamp to a maximum of 12 in·lbs (135 N·cm) for a 7/8 in
(22 mm) steam hose, or 16 in·lbs (180 N·cm) for a 1-3/4 in (45 mm) steam hose.
7. Connect the electrode plugs to the electrodes in the steam cylinder. The electrode pins and the
electrode plugs are color-coded – make sure that they match, and are installed correctly.
8. Connect the plug to the high water level sensor.
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9. Restart the humidifier as described in "Restarting After Shutdown" on page 58.
10.Reset the cylinder – refer to "Resetting Cylinder" on page 68.
1
2
7
6
5
4
3
Figure 12: Steam Cylinder Removal and Installation
1
2
3
4
5
6
7
Nortec EL
Hose clamp
Socket, high water level sensor
Drain valve
Steam cylinder
Strap
Electrode plug
Steam hose
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6.3.3
Removal and Installation of Drain Valve
Removal
Remove the drain valve as follows. Refer to Figure 13.
1. Remove the steam cylinder – refer to "Removal and Installation of Steam Cylinder" on page 62.
2. Release the hose clamp, and disconnect the fill hose (fill cup to cylinder) from the drain valve.
3. Disconnect the electrical connectors and the ground wire from the drain valve.
4. Remove the two screws that secure the drain valve to the cabinet.
5. Remove and discard the O-ring in the drain valve.
6. To disassemble the valve, loosen the brass nut and remove the solenoid assembly from the valve body.
7. Disassemble the solenoid assembly, and clean all components.
6
3
2
4
5
7
8
1
Figure 13: Drain Valve Removal and Installation
1
2
3
4
5
6
7
8
Fill hose (fill cup to cylinder)
Screw (×2)
O-ring
Valve body
Plunger
Spring (note its orientation)
Brass nut and solenoid
Solenoid
Installation
Install the drain valve as follows. Refer to Figure 13.
1. For safety reasons, always install a new O-ring in the drain valve.
2. Assemble the solenoid assembly making sure that the tapered end of the spring is oriented as shown.
3. Assemble the solenoid assembly to the valve body, and hand-tighten. Then turn an additional quarter
turn.
4. Install the drain valve and secure it to the cabinet with the two screws.
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5. Connect the fill hose to the drain valve, and secure it with the hose clamp.
6. Connect the electrical connectors and the ground wire to the drain valve.
7. Install the steam cylinder – refer to "Removal and Installation of Steam Cylinder" on page 62.
6.3.4
Replacement of Backup Battery and Fuses
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Shut down the unit as described in "Shutting Down" on page 58 before replacing the
backup battery or fuses.
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). Refer to ANSI/ESD-S20.20.
Only a qualified service technician authorized by the customer should replace the backup battery in the
control board and the fuses in the driver board(s).
Always replace defective fuses with new fuses that match the specification given in the procedure below.
Never short-circuit and bypass the fuses.
Replace the backup battery in the control board, and the fuses in the driver board(s) as follows. Refer
to Figure 14 on page 66.
1. Remove the door panel on the control cabinet. Remove the locking screw and swing the front panel
open.
2. Replace the backup battery in the control board with a new 3V battery (CR 2032).
3. Replace the fuse "F1" with a new slow-acting 1A fuse.
IMPORTANT! For safety reasons, always install the protective cover on the fuse "F3".
4. Remove the protective cover over the fuse "F3" in the driver board. Replace the fuse with a new
slow-acting 4A fuse. Install the protective cover on the fuse.
5. Close the front panel and install the locking screw to secure it. Install the door panel, making sure
that it is fastened securely.
6. Remove the lock and tag from the external disconnect switch, and restore power to the humidifier.
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2
1
4
3
Figure 14: Backup Battery and Fuses Replacement
1
2
3
4
66
Maintenance
Protective cover
Fuse 4A, slow-acting
Fuse 1A, slow-acting
Battery 3V (CR 2032)
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6.4
Cleaning
6.4.1
Cleaning Agents
Use only the cleaning agents described in the procedures below. Disinfectants may only be used if they
do not leave behind toxic residue. Rinse all parts thoroughly with clean tap water after cleaning.
Follow all instructions, and observe the safety precautions stated below.
CAUTION!
Risk of damage to the humidifier components!
Do not use solvents, aromatized or halogenized hydrocarbons, or other harsh chemicals for
cleaning.
6.4.2
Cleaning Procedures
Water Hoses
Use a rubber mallet to knock out any scale buildup in the
hoses. Rinse the hoses thoroughly with hot tap water.
Fill valve
Use a soft-bristled brush (not wire brush) to carefully remove
any scale buildup inside the fill valve and in the strainer.
1
1Strainer
Drain Valve - Valve Body
Use a soft-bristled brush (not wire brush) to remove any scale
buildup inside the valve body of the drain valve.
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Fill Cup
Release the two tabs and remove the cover on the fill cup.
Use a soft-bristled brush (not wire brush) to remove any scale
buildup inside the fill cup.
Install the cover on the fill cup.
Drain Cup
Use a soft-bristled brush (not wire brush) to carefully remove
any scale buildup inside the drain cup.
Wash the drain cup with lukewarm soap solution, and rinse
thoroughly with tap water.
6.5
Resetting Cylinder
WARNING!
Risk of damage to equipment and property!
DO NOT reset the cylinder in the control software unless the steam cylinder has been
replaced.
Reset the cylinder in the control software as follows after replacing the steam cylinder(s):
1. Select the <Menu> button on the Home screen, then enter the password to login. Refer to "Main
Menu" on page 21.
2. Select Service > General Service tab > Cylinder A Reset. A reset dialog appears prompts you to
confirm the cylinder reset. Note: On units with dual steam cylinders, individually reset the appropriate maintenance counter – A, B, or both for the cylinder(s) replaced.
3. Select the <Yes> button on the confirmation screen. The Cylinder Status and the Cylinder Spent
status message are reset.
Select the <No> button at any time to abort the reset.
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6.6
Installing Software and Firmware Updates
Install the updates for the control software or the driver board firmware as follows. Refer to Figure 10 on
page 57.
Note: If software update is accidentally interrupted, the humidifier will not operate, but the software
update can be resumed by leaving the USB key inserted in the board and power cycling the unit. The
integrated control board will detect the software was not properly installed, and restart the update.
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Shut down the humidifier properly at the external disconnect switch before accessing
the control board in the humidifier.
1. Set the On/Off button to the Off position.
2. 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.
3. Remove the door panel on the control cabinet in the humidifier – refer to "Removal and Installation of
Door Panels" on page 61.
4. Swing the front panel open.
5. Carefully insert the USB memory stick (formatted to 32-bit FAT system and containing the software
updates) into the USB port. Make sure that the maximum length of the memory stick does not exceed 3 in (75 mm).
6. Close the front panel, and install the door panel.
7. Remove the lock and tag from the external disconnect switch, and restore power to the humidifier.
8. Set the On/Off button to the On position.
9. When the Home screen appears, select the <Menu> button, then enter the password to login.
CAUTION!
Risk of file corruption!
Do not interrupt software and firmware updates once it starts. Wait until updating is completed.
Corrupted control software or firmware can render the humidifier unusable.
Note: If software update is accidentally interrupted, the humidifier will not operate, but the software update can be resumed by leaving the USB key inserted in the board and power cycling
the unit. The integrated control board will detect the software was not properly installed, and
restart the update.
10.Select Administrator > Software Settings tab > Software Update to update the control software.
Select Driver Board A.DB.A to update the firmware for the driver board. Or select Driver Board
A.DB.B to update the firmware for the second driver board (on units with dual steam cylinders).
A progress bar shows the status of the updating process. When updating is completed, the Home
screen is displayed.
Note: The software and firmware updates must be located at the root level on the USB memory stick.
11. Repeat Step 1 to Step 4, and carefully remove the USB memory stick.
12.Close the front panel and install the locking screw to secure it. Install the door panel making sure
that it is fastened securely – refer to "Removal and Installation of Door Panels" on page 61.
13.Repeat Step 7 and Step 8 to power up the humidifier.
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7
Fault Isolation
7.1
General
Troubleshooting of the Nortec EL steam 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 Nortec service technicians.
Troubleshooting the Nortec EL steam humidifier may require the user to access the inside of the control and plumbing cabinets in the humidifier which may expose the user and equipment to the hazards
described below.
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Shut down the unit as described in"Shutting Down" on page 58 before performing any
work inside the humidifier.
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). Refer to ANSI/ESD-S20.20.
7.2
Fault Indication
When a condition that is not normally expected occurs, it is detected by the control software and a warning or fault message is displayed in the Service/Warning/Fault status area of the Home screen (refer to
Figure 5 on page 11). The warning and fault message types are described in Table 8.
Table 8: Maintenance/Fault Status Descriptions
Message Type
Warning
Descriptions
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 EL 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.
Fault
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 EL
humidifier stops steam production immediately.
When a fault message is active, the status LED turns red in color.
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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 15.
Figure 15: Fault History Screens
In addition, the Service relay in the optional remote fault indication PCB can also be set up to notify the
user when a warning or maintenance notification message is triggered.
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 9 to Table 13 provide general guidelines for troubleshooting the Nortec EL humidifier and other auxiliary system components. For detailed troubleshooting information of the auxiliary system components,
refer to their product manuals.
The list of Nortec EL warning and fault messages, and corrective actions are shown in Table 14 on page 74.
Humidifier
Table 9: General Troubleshooting – Nortec EL Humidifier
Problem
Nothing happens when the
On/Off switch is turned On.
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Fault Isolation
Probable Cause
Corrective Action(s)
Blown fuse(s).
–– Check the fuses ("F1" and "F3") on the driver board.
Replace, if necessary.
Incorrect voltage, or no voltage.
–– Check the disconnect switch in the supply line.
Step-down transformer not outputting 24 VAC.
–– Replace the transformer. Verify primary wiring.
2582954_C_EN_1611
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Problem
Humidifier will not produce
steam, or does not reach RH
setpoint value.
Probable Cause
Safety loop is open.
Corrective Action(s)
–– Check if the message "Safety Loop" is displayed in
the operating status area of the Home screen.
–– Check if there is 24VAC supply at low voltage terminal strip contact "2".
–– Check that all On/Off devices connected to low
voltage terminal strip contacts "1" and "2" are wired
properly, and their contacts are closed when they
should be.
Humidifier displays warning
or fault message.
Output is limited by the high limit
humidistat signal.
–– Check if the high limit humidistat is installed too
close to the humidifier, and if it is operating correctly.
No signal on Channel 1.
–– Check voltage between low voltage terminal strip
contacts "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
contacts "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.
Water conductivity is low.
–– Check if the message "Max Level" is displayed in
the operating status area of the Home screen. If the
water conductivity is low, it may take several hours
before the humidifier can reach full output capacity. This is quite normal. The steam cylinder is not
drained to permit the mineral concentration (and
hence conductivity) to rise.
The control software has detected an abnormal condition.
–– Refer to "Nortec EL Warning and Fault List" on page 74.
Steam Distributors
Table 10: General Troubleshooting – Steam Distributors
Problem
Distributor spitting out water.
Condensation in duct.
Nortec EL
Probable Cause
Corrective Action(s)
Distributor not level.
–– Use end supports on the distributor to make sure
that it is level.
The condensate trap is too close
to the distributor.
–– The condensate trap must be located a minimum
of 12 in (30 cm) below the distributor. Relocate, if
necessary.
Condensate line not sloped sufficiently.
–– The condensate line must have a minimum
downslope of 1.2°. Reinstall, if necessary.
Clogged condensate trap.
–– Make sure the traps allow water to flow freely.
Condensate line has double traps
in close proximity to each other.
–– Condensate traps should not be in close proximity to
each other, to prevent air locks.
Steam line is not insulated.
–– If steam line is too long, condensate build up could
overload the distributor condensate port. Insulate
the steam line to improve efficiency, and install additional condensate traps as required.
Installation clearances not
observed.
–– Refer to distributor installation manual for required
clearances. Relocate the distributor, if necessary.
Design conditions changed.
–– Check supply air temperature and humidity to determine if conditions have changed.
High limit humidistat not functioning.
–– Check setting and operation of high limit humidistat.
Replace, if defective.
Air proving switch not installed or
not working
–– Check that the humidifier will only operate when air
is moving through the duct.
Improper location of high limit
humidistat.
–– Check that the high limit humidistat is located where
it can detect high duct humidity.
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SAM-e
Table 11: General Troubleshooting – SAM-e
Problem
Probable Cause
SAM-e spitting out water.
SAM-e grommet leaks
Corrective Action(s)
The condensate trap is too close
to SAM-e.
–– The condensate trap must be located a minimum
of 12 in (30 cm) below the header. Relocate, if
necessary.
Condensate line not sloped sufficiently.
–– The condensate line must have a minimum
downslope of 1.2°. Reinstall, if necessary.
Steam line is not insulated.
–– If steam line is too long, condensate build up could
overload the SAM-e condensate port. Insulate the
steam line to improve efficiency, and install additional condensate traps as required.
Distributor tubes not seated
properly.
–– Push the distributor tubes down until support washer
is resting on rubber grommet.
Damaged grommet.
–– Replace any damaged grommets.
Blower Pack
Table 12: General Troubleshooting – Blower Pack
Problem
Probable Cause
Blower pack not operating.
Note: The blower pack will
not come on unless steam is
produced by the humidifier.
Corrective Action(s)
No power to the blower pack.
–– Check power connection.
–– Check blower pack fuses.
Blower pack thermostat not
closing.
–– Check thermostat wiring.
–– Replace the thermostat if it's contact does not close
when exposed to steam.
Digital Humidistats
Table 13: General Troubleshooting – Digital Humidistats
Problem
Probable Cause
Humidistat reading humidity
levels incorrectly.
7.4
Corrective Action(s)
Sensor out of calibration.
–– Calibrate the sensor – refer to humidistat manual.
Improper sensor location.
–– Check that the humidistat is installed at a location
which correctly represents the humidity in the room.
Relocate, if necessary.
Exposed to draft or heat source.
–– Check that heat/cold fluctuations, drafts, sunlight,
doors, or vents do not affect the humidity reading.
Relocate, if necessary.
No vapor barrier.
–– Make sure that the vapor barrier is in place and
working, so that drafts cannot affect the humidity
reading.
Nortec EL Warning and Fault List
Table 14 shows the list of warning and fault messages triggered by the control software in the Nortec EL
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.
Table 14: Nortec EL Warning and Fault List
Code
74
Warning
Fault
W01
E01
Fault Isolation
Message
Smartcard
Probable Cause
Corrective Action(s)
No communication with the SIM card.
No SIM card installed.
–– Contact your local Nortec
representative.
Defective SIM card.
–– Contact your local Nortec
representative.
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Code
Warning
Fault
W06
–
W07
–
–
Message
Probable Cause
Main Missing
(or)
Ext Missing
Corrective Action(s)
The link between the main unit and the extension unit in the Linkup chain
is missing.
Ext Fault
No communication between the main
unit and the extension unit.
–– Check/connect the bus cable.
The main unit or the extension unit
may be switched off.
–– Switch on the main unit and/or
the extension unit.
The main unit may not be configured
properly.
–– Make sure that Linkup Units on
the main unit is configured for
the correct number of extension
units in the Linkup chain.
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).
–– Contact your local Nortec
representative.
E10
CTRLR Fault
(or)
Memory
(or)
CTRLR Reset
Flash memory read/write fault.
W12
–
On/Off Timer
The humidifier is turned off by the On/Off timer.
W21
E21
Max. Level
Water level is at the top of the cylinder, or foaming was detected.
No current (on fault)
Humidifier has filled to the top of the
cylinder without reaching demand.
–– No action is required – for
information purposes only. It
is normal for a new cylinder to
reach the maximum level before
water in the cylinder is concentrated, and for an old cylinder to
reach maximum level near the
end of its life cycle.
–– If the cylinder is new, add ¼ tsp
(1.25 ml) of salt to the fill cup to
raise the conductivity level.
–– The conductivity of the water
supply may be too low. Use potable water supply with conductivity greater than 150 μS/cm.
W22
Nortec EL
E22
Fill T/O (timeout)
Permissible filling time exceeded.
Water supply line clogged, shutoff
valve closed, or a clogged filter.
Water pressure too low.
–– Check the supply line, shutoff
valve, filter and water pressure.
Clogged or defective fill valve.
–– Clean the strainer in the fill
valve. Replace the fill valve, if
necessary.
Excessive backpressure in the steam
line (duct pressure too high, steam
line too long or kinked), causing
water loss through the fill cup.
–– Check duct pressure, inspect
steam installation. If necessary,
install the optional fill cup extension kit.
Leaks in the water supply.
–– Fix all water leaks.
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Code
Warning
Fault
W23
E23
Message
Current T/O (timeout)
Probable Cause
Corrective Action(s)
No heating current to electrodes.
Failure of one or more phases of the
heating current.
–– Check the power supply. Check
the optional primary fuse (if
installed).
–– Check/replace the main contactor, if necessary.
W24
W25
–
E24
E25
E26
Over Curr
Excess Curr
Current Off
Water supply line clogged, shutoff
valve closed, or a clogged filter.
Water pressure too low.
–– Check the supply line, shutoff
valve, filter and water pressure.
Clogged or defective fill valve.
–– Clean the strainer in the fill valve.
Replace the fill valve,
Excessive backpressure in the steam
line (duct pressure too high, steam
line too long or kinked), causing
water loss through the fill cup.
–– Check duct pressure, inspect
steam installation. If necessary,
install the optional fill cup extension kit.
Leaks in the water supply.
–– Fix all water leaks.
Current draw in relation to the humidification demand is too high.
Humidity demand decreased too fast.
–– The system regulates current
levels automatically to match the
humidity demand.
Clogged drain valve.
–– Check/clean the drain valve.
Excessive scale build-up in the steam
cylinder.
–– Replace the steam cylinder, if
necessary. Refer to "Removal
and Installation of Steam Cylinder" on
page 62.
Water conductivity too high for the
type of steam cylinder installed in
the unit.
–– Contact your local Nortec
representative.
Maximum permissible current draw exceeded.
Clogged drain valve.
–– Check/clean the drain valve.
Excessive scale build-up in the steam
cylinder.
–– Replace the steam cylinder, if
necessary. Refer to "Removal
and Installation of Steam Cylinder" on
page 62.
Water conductivity too high for the
type of steam cylinder installed in
the unit.
–– Contact your local Nortec
representative.
Current is detected when the controller has not energized the contactor.
Contactor jammed or short-circuited.
–– Check the secondary side of
contactor. Replace the contactor,
if necessary.
Current sensor on the driver board
not seated properly, or defective.
–– Check the current sensor is
seated properly on the driver
board.
–– Replace the current sensor, if
necessary.
76
Fault Isolation
2582954_C_EN_1611
Nortec EL
Code
Warning
Fault
W27
E27
Message
Probable Cause
Foam Cyl
Corrective Action(s)
Foam detected in the steam cylinder.
Foaming Cyl (on fault)
Foam in the steam cylinder.
–– Manually Initiate drain of the
steam cylinder – refer to "Manually
Initiate Steam Cylinder Draining" on
page 55. Repeat several times,
if necessary.
–– Check the quality of the water
supply.
Backpressure may be preventing
water from entering the cylinder.
–– Check for restrictions and proper
condensate removal in the
steam line.
–– If water goes down the drain
during the fill cycle, install a fill
cup extension kit.
W28
–
Cylinder Spent
Water may be contaminated with
organic material.
–– Install a filter to remove the
organic material.
Drain may be blocked due to overconcentration of minerals.
–– Clean the drain line.
Humidifier short cycling.
–– Check that the humidifier can
run normally long enough to perform a drain cycle. If not, enable
the Short Cycle feature.
Steam cylinder replacement required.
Electrodes in steam cylinder spent.
–
E29
Cyl Fault
Steam cylinder replacement overdue.
Electrodes in the steam cylinder fully
spent.
W32
–
–– Replace the steam cylinder –
refer to "Removal and Installation of
Steam Cylinder" on page 62.
CTRL Sigal
(or)
RH Signal
–– Replace the steam cylinder –
refer to "Removal and Installation of
Steam Cylinder" on page 62.
Invalid humidity demand signal.
Humidity sensor/humidistat not connected correctly.
–– Check connection.
Signal type for the sensor/humidistat
signal incorrectly configured (e.g.
mA instead of V signal) in control
software.
–– Check/correct the Signal Type setting for the sensor/humidistat in
the control software.
Defective humidity sensor/humidistat.
–– Replace defective sensor/
humidistat.
W34
–
Rem Disable
The humidifier is disabled remotely by the BMS (building management
system).
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
Sensed humidity is above the maximum value configured in the software.
Incorrect layout of the humidity control system, or defective components.
–– Check the humidity control
system.
Humidifier capacity too large for the
space being humidified.
–– Adjust the proportional and/or integral
value of the controller.
–– Run the humidifier with Capacity
Limitation.
The RH High value for the sensor
signal is set too low.
W43
Nortec EL
–
RH Low
–– Adjust the RH High value for the
sensor signal.
Sensed humidity is below the minimum value configured in the software.
Incorrect layout of the humidity control system, or defective components.
–– Check the humidity control
system.
The RH Low value for the sensor
signal is set too high.
–– Adjust the RH Low value for the
sensor signal.
2582954_C_EN_1611
Fault Isolation
77
Code
Warning
Fault
W57
–
Message
Startup Code
Probable Cause
Activation code required to use the humidifier.
Activation code missing.
W71
–
Low Cond
Corrective Action(s)
–– Contact your local Nortec
representative.
Water conductivity may be too low.
Water conductivity too low for the
type of steam cylinder installed in
the unit.
–– Contact your Nortec
representative.
Leak around the drain valve.
–– Fix any leaks between the steam
cylinder and the drain valve. If
necessary, clean the drain valve.
Backpressure may be causing fill
water to go down the drain.
–– Check for restrictions and proper
condensate removal in the
steam line.
–– If water goes down the drain
during the fill cycle, install a fill
cup extension kit.
Newly installed cylinder not reaching
demand for extended period of time
due to low conductivity.
–– Add ¼ tsp (1.25 ml) of salt to the
fill cup to raise the conductivity
level.
–– Adjust the D(rain) Factor to 0.7.
–– Enable Low Conductivity.
Conductivity level of water supply
may be too low.
–
–
78
Fault Isolation
E84
E128
Driver Bd
Curr Sensor
–– Contact your Nortec
representative.
No communication between the controller and the driver board.
Communication cable between the
driver board and the control board
not connected properly.
.
–– Make sure the RS485 cable is
connected to RS4851 on the
driver board and J12 on the
control board.
SW1 switch on the driver board may
not be set correctly.
–– Set the SW1 switch to "0" on
driver board A, and "1" on driver
board B, and power cycle the
humidifier.
Unspecified driver board fault.
–– Contact your Nortec
representative.
The current sensor cannot be calibrated on system startup.
Current sensor not connected
properly.
–– Check the current sensor is connected properly.
Defective current sensor.
–– Contact your local Nortec
representative.
2582954_C_EN_1611
Nortec EL
7.5
Exporting Fault and Service History
Export the humidifier fault and service history data to a USB memory stick as follows. Refer to Figure 10
on page 57.
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Shut down the unit as described in"Shutting Down" on page 58.
1. Set the On/Off button to the Off position.
2. 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.
3. Remove the door panel on the control cabinet in the humidifier – refer to "Removal and Installation of
Door Panels" on page 61.
4. Swing the front panel open.
CAUTION! Any previous history data on the memory stick will be over-written.
5. Carefully insert a USB memory stick (formatted to 32-bit FAT system) into the USB port. Make sure
that the maximum length of the memory stick does not exceed 3 in (75 mm).
6. Close the front panel, and install the door panel.
7. Remove the lock and tag from the external disconnect switch, and restore power to the humidifier.
8. Set the On/Off button to the On position.
9. When the Home screen appears, select the <Menu> button, then enter the password to login.
10.Select Service > Fault/Service History tab > Export History. The last 40 humidifier fault/
service history events are then downloaded to the memory stick as separate files labelled
WARNING_FAULT.csv and SERVICE_HISTORY.csv.
Press the <Cancel> button at any time to abort the operation.
11. Repeat Step 1 to Step 4, and carefully remove the USB memory stick.
12.Close the front panel. Install the door panel making sure that it is fastened securely – refer to "Removal
and Installation of Door Panels" on page 61.
13.Repeat Step 7 and Step 8 to power up the humidifier.
7.6
Resetting Fault Status
Reset a condition in the humidifier with a "Fault" status as follows:
1. Set the On/Off button to the Off position.
2. 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.
Nortec EL
2582954_C_EN_1611
Fault Isolation
79
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80
Fault Isolation
2582954_C_EN_1611
Nortec EL
8
Wiring Diagrams
Main Contactors
CYLINDER-A
To Module B (double unit only)
K1
To Level Sensor
QC2
R
To Connector
X4
B
Broken lines 3-phase
6-wire unit
R
To Level Sensor
QC2
To Level Sensor
QC1
Y
L3 L2 L1
To Current Sensor
K1
T3 T2 T1
L3 L2 L1
B
To Connector
X4
Primary
Fuse
Option
Module A (Three Phase)
Single Contactor
X0
To transformer
(primary side)
Main
Contactor K1
L2 L1
T2 T1
L2 L1
R
B
B
Module A (Single Phase)
s s
R
Steam Cylinder
Cylinder with Single Contactor
To Module B (double unit only)
A
s s s
Y
Cylinder with Dual Contactor
Main
Contactor
B
R
Y
B
R
B
R
Steam Cylinder
Module A (Three Phase)
Dual Contactor
X0
To transformer
(primary side)
R
To Level Sensor
QC1
Y
A
L3 L2 L1
Y
Y
B
To Current Sensor
T3 T2 T1
L3 L2 L1
B
Y
s s s s s s
R
Steam Cylinder
T3 T2 T1
L3 L2 L1
R
Y
B
L N
Fill
Drain
X0
4
On/Off
Switch
1
R
O
G
R
1
1
1
1
s
N
L1FU
INLET
O
110-120 VAC
Transformer
F3 4AT
LEVEL SENS.
O
PRI
L1SW
SWITCH
B
L1
Blower Pack Power Supply
(for 208-600 V Space and RMBP units)
SEC
24 VAC
R
Y
BL
X1
L1SC NSW
MAIN SUPPLY
NSW
N SC1 SC2 PE PE
L1SC
X2
X5
X4
X6
L1SW L1SW NSW
SPARE/DRAIN CONTACT.
QC2
O
s
3
QC1
1A
slow blow
2
CONT.
P1
N
X7
R
INLET
1
DRAIN SPARE
To Terminal X1
in Module B
(double unit only)
B
BL
P
MODULE B
PE
1
R
BL
SC OK
N.O. Blower Pack
Air Proving switch
F1 1AT
1
X11
1
X12
IN
X9
B
Y
1
X8
B
R
R
1
RS4852
X15
To Terminal X14 in Driver Board B
C (double unit only)
Sensor Supply
Max. 60mA
Service
CR2032
JP7
J15
COMM PORT
J19
Driver B
J21
JP11
TD RD GND 5V 3.3V
ETHERNET
JP8
Driver A
GND GND 24V
BAT
CONTROL BOARD
F1
USB
JP4
J14
J12
GND
B
J23
Error
J3 ACC J2 RFB
9
10
4
Unit ON Steam
Flush A
Flush B
Fan B
Fan A
3
-
2
+
Analog Out
1
SIM Card
Main unit
GND
-
100mA
3
4
5
6
7
8
J10
J6
G R
J16
G Y GY BR GY B
+
F1
2
4 CH 1
1
R
B
1
2
1
BP Loop
3 GND
2
Sec. Loop
1
24 VAC
R
Y
-
9
10
R
6 10 VDC
5 CH 2
R
B
1
24V
IN GND
LIM. SIGN. BLOWER
R
Y
R
+
3
4
5
6
7
8
R
8 +
7 GND
B
GY Y
1
2
9
GND D+ D-
X14
1
24V
ON/OFF
RS4851
X13
IN GND
CONT. SIGN.
24V
JP1
JP3
10V
SW1
LEVEL
LOW 24V GND
PWR IC
24V GND GND D+ D-
SPARE1 SPARE2 T1
R
R
V+
HB OK
DRIVER
BOARD A
HWS
CURRENT SENSOR
Wire Colors:
R Red
Y Yellow
B Black
BL Blue
BR Brown
GY Grey
G Green
O Orange
IN
R
COMM
100mA
Analog Out
1
2
1
2
3
J17
J18
DISPLAY
DISPLAY
J22 LED
4
Sensor Supply
Max. 60mA
Accessory Board (option)
Remote Fault Board (option)
Figure 16: Wiring Diagram - Nortec EL Humidifier, Steam Cylinder A (Module A)
Nortec EL
2582954_C_EN_1611
Wiring Diagrams
81
Legend: (Figure 16)
F1 Internal fuse, driver board (1A, slow-acting)
F3 Internal fuse, driver board (4A, slow-acting)
JP4 Jumper for activating the termination resistor for Modbus or BACnet MSTP network.
J6 Modbus connector (RS485 interface)
JP7 Jumper for activating Modbus or BACnet MSTP communication via connector J6.
JP8 Termination, Linkup system
J10 Linkup connector
K1 Main contactor, supply voltage
LV Low voltage terminal strip A
SW1Rotary switch, module identification (Module A: 0)
X0 Terminal block, supply voltage
Figure 17 shows the wiring diagram for large humidifiers with a second steam cylinder (usually referred
to as Cylinder B). Connections carried over from Figure 16 on page 81.
Main Contactors
CYLINDER-B
K1
Y
Y
B
To Current Sensor
T3 T2 T1
L3 L2 L1
B
Y
s s s s s s
R
Steam Cylinder
T3 T2 T1
L3 L2 L1
R
Y
B
A
Connects to Module A (Terminal Block X0)
To Level Sensor
QC2
R
R
To Level Sensor
QC1
To Connector
X4
B
Cylinder with Three Phase Dual Contactor
Cylinder with Three Phase Single Contactor
Broken lines 3-phase
6-wire unit
R
s s s
Y
B
K1
B
R
Y
B
R
B
T3 T2 T1
L3 L2 L1
R
Steam Cylinder
Y
Main
Contactor
A
Connects to Module A (Terminal Block X0)
Primary
Fuse
Option
Y
L N L N
2A
slow blow
G
R R R R
O
O
s
Fill
Drain
s
R
O
O
110-120 VAC
Blower Pack Power Supply
(for 208-600 V Space and RMBP units)
1
1
N
L1FU
INLET
L1SW
SWITCH
F3 4AT
L1
QC2
LEVEL SENS.
B
BL
R
Y
BL
X1
L1SC NSW
N SC1 SC2 PE PE
NSW
MAIN SUPPLY
1
QC1
1
L1SC
X2
X5
X4
X6
L1SW L1SW NSW
SPARE/DRAIN CONTACT.
GND
Connects to
B Terminal X1
GND
24Vac
in Driver Board A
P1
X7
N
P
MODULE B
PE
1
R
CONT.
INLET
1
DRAIN SPARE
SC OK
N.O. Blower Pack
Air Proving switch
F1 1AT
1
1
IN
1
IN
X12
R
Y
R
1
24V
R
8 +
7 GND
B
B
X9
Y
1
IN GND
9
R
X8
RS4852
R
B
R
Y
R
BP Loop
6 10 VDC
5 CH 2
4 CH 1
3 GND
2
Sec. Loop
1
24 VAC
B
R
R
V+
IN GND
R
1
RS4851
GND D+ D-
X15
X14
X13
24V
ON/OFF
LIM. SIGN. BLOWER
10V
24V
JP1
JP3
PWR IC
24V GND GND D+ D-
SPARE1 SPARE2 T1
CONT. SIGN.
HB OK
SW1
CURRENT SENSOR
HWS
DRIVER
BOARD B
LEVEL
LOW 24V GND
Wire Colors:
R Red
Y Yellow
B Black
BL Blue
BR Brown
GY Grey
G Green
O Orange
X11
R
COMM
1
G Y GY
C Connects to Terminal X15 in Driver Board A
Figure 17: Wiring Diagram - Nortec EL Humidifier, Steam Cylinder B (Module B)
82
Wiring Diagrams
2582954_C_EN_1611
Nortec EL
Legend:
F1 Internal fuse, driver board (1A, slow-acting)
F3 Internal fuse, driver board (4A, slow-acting)
K1 Main contactor, supply voltage
LV Low voltage terminal strip B
SW1Rotary switch, module identification (Module B: 1)
Nortec EL
2582954_C_EN_1611
Wiring Diagrams
83
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84
Wiring Diagrams
2582954_C_EN_1611
Nortec EL
9
Decommissioning
9.1
General
If the Nortec EL steam 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 EL steam 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 EL steam humidifier may require the user to access the inside of the
control and plumbing cabinets in the humidifier which may expose the user and equipment to the hazards described below.
DANGER!
Risk of electric shock!
The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door
panels are removed. Touching live parts may cause severe injury or even death.
Prevention: Shut down the unit as described in "Shutting Down" on page 58 before proceeding.
WARNING!
Risk of severe burns from exposure of skin to hot water or hot steam vapours!
The water in the steam cylinder(s) in the humidifier can be up to 203°F (95°C). Contact with
the hot water or hot steam vapours can result in severe burns.
Prevention: Shut down the unit as described in "Shutting Down" on page 58 and wait for the unit to
cool down before proceeding.
WARNING!
Risk of severe burns from contact with hot surfaces!
Components of the stream system may reach 212°F (100°C) during operation. Contact with
the hot surfaces can result in severe burns.
Prevention: Avoid touching any components in the plumbing cabinet until the unit has cooled down
to room temperature.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidifier are very sensitive
to electrostatic discharge (ESD).
Prevention: Take appropriate measures to protect the electronic components inside the unit
against damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.
Nortec EL
2582954_C_EN_1611
Decommissioning
85
9.2
Removal from Service for Disposal or Long-term Storage
Remove the Nortec EL humidifier from service (for disposal or long-term storage) as follows:
1. Drain the steam cylinder, and shut down the humidifier as described in "Shutting Down" on page 58.
Follow all safety precautions.
2. Disconnect and remove the power supply to the Nortec EL humidifier. Refer to "Wiring Diagrams" on
page 81.
3. Disconnect and remove the control signal inputs to the humidifier.
4. Disconnect the steam and condensate lines, and empty out all fluids.
5. Disconnect the water and drain connections to the humidifier.
6. Remove the humidifier from its mounting surface.
7. If the Nortec EL 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
8. If the Nortec EL humidifier is to be disposed off, refer to "Disposal/Recycling".
9.3
Disposal/Recycling
The Nortec EL steam 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, please contact the appropriate local authorities or your local Nortec representative.
86
Decommissioning
2582954_C_EN_1611
Nortec EL
10
Product Specifications
10.1
Performance Data
Housing
Size
Nortec EL
Model
S
005
M
L
10.2
277V/1~
380-415V/1~
440-480V/1~
550-600V/1~
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
5
(2.2)
1.9
15.6
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
010
–
–
–
10
(4.5)
3.7
18.0
10
(4.5)
3.7
15.6
10
(4.5)
3.7
13.5
10
(4.5)
3.7
9.0
10
(4.5)
3.7
7.8
10
(4.5)
3.7
6.2
020
–
–
–
20
(9)
7.5
36.0
20
(9)
7.5
31.2
20
(9)
7.5
27.0
20
(9)
7.5
18.0
20
(9)
7.5
15.6
20
(9)
7.5
12.5
030
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
050
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
075
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
100
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
150*
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
200*
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
S
L
220-240V/1~
A
Nortec EL
Model
lb/h
(kg/h)
208V/1~
kW
Housing
Size
M
110-120V/1~
208V/3~
220-240V/3~
380V/3~
440-480V/3~
550-600V/3~
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
lb/h
(kg/h)
kW
A
005
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
010
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
020
20
(9)
7.5
20.8
20
(9)
7.5
18.0
20
(9)
7.5
10.4
20
(9)
7.5
9.0
20
(9)
7.5
7.2
030
30
11.2
(13.6)
31.1
30
11.2
(13.6)
27.0
30
11.2
(13.6)
15.6
30
11.2
(13.6)
13.5
30
11.2
(13.6)
10.8
050
50
18.7
(22.7)
51.9
50
18.7
(22.7)
45.0
50
18.7
(22.7)
26.0
50
18.7
(22.7)
22.5
50
18.7
(22.7)
18.0
075
75
(34)
28.1
77.9
75
(34)
28.1
67.5
75
(34)
28.1
39.0
75
(34)
28.1
33.7
75
(34)
28.1
27.0
100
90
(41)
33.7
93.4
100
(45)
37.4
90.0
100
(45)
37.4
52.0
100
(45)
37.4
45.0
100
(45)
37.4
36.0
150*
150
(68)
56.1 155.7
150
(68)
56.1 135.0
150
(68)
56.1
78.0
150
(68)
56.1
67.5
150
(68)
56.1
54.0
200*
180
(82)
67.3 186.9
200
(91)
74.8 180.0
200
(91)
74.8 104.1
200
(91)
74.8
90.0
200
(91)
74.8
72.0
Operating Data
Control Signal Input Type:
Active
0-5VDC, 1-5VDC, 0-10VDC, 2-10VDC, 0-20VDC, 0-16VDC,
3.2-16VDC, 0-20mADC, 4-20mADC
Passive
135-10kΩ ohmic humidity sensor
On/Off control
<2.5VDC
Off
2.5-20VDC
On
Ambient Conditions:
Nortec EL
Ambient temperature
41-104 °F (5-40 °C)
Relative humidity
5-95% (non-condensing)
2582954_C_EN_1611
Product Specifications
87
Backpressure:
Maximum permissible backpressure (duct static pressure
and line backpressure)
5.5 in H2O (1.37 kPa)
Up to 10 in H2O (2.49 kPa) with optional fill cup extension
Water Supply:
Water pressure (regulated)
30-80 psig (207-550 kPa)
Flow rate
Minimum 0.9 gpm (3.3 L/min)
Water temperature
34-104 °F (1-40 °C)
Water quality
Cold potable water filtered to 5 μm (optional), with conductivity of
150-1200 μS/cm (hardness 0-12 gpg when silica is between
0-4 ppm, 0-3 gpg when silica is between 4-14 ppm, silica content
above 14 ppm is not recommended), and pH level between 7-7.5
Drain Water:
Drain water temperature
140 °F (60 °C) maximum
Drainage capacity
Minimum 2.3 gal/min (8.7 L/min) per steam cylinder
Power:
10.3
Maximum current draw
Refer to the specification label on the unit.
Maximum external fuse rating
Refer to the specification label on the unit.
Size and Weight
10.3.1 Size
Model
EL
EL Space
Housing Size
Dimensions (W×D×H)
Small
16.5 × 14.5 × 26.4 in (418 × 370 × 670 mm)
Medium
20.9 × 15.8 × 30.7 in (530 × 400 × 780 mm)
Large
39.4 × 15.8 × 30.7 in (1000 × 400 × 780 mm)
Small
16.5 × 15.8 × 35.2 in (418 × 400 × 893 mm)
Medium
20.9 × 16.3 × 39.5 in (530 × 415 × 1003 mm)
10.3.2 Weight
Model
EL
EL Space
88
Product Specifications
Housing Size
Net Weight
Operating Weight
Small
45 lb (21 kg)
65 lb (30 kg)
Medium
85 lb (39 kg)
150 lb (68 kg)
Large
120 lb (55 kg)
245 lb (112 kg)
Small
83 lb (38 kg)
103 lb (47 kg)
Medium
123 lb (56 kg)
188 lb (85 kg)
2582954_C_EN_1611
Nortec EL
Notes
Warranty
Nortec Humidity Inc. and/or Nortec Humidity 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 (with the exception of the cylinder), 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, provided that the defective part(s) is returned freight
prepaid by the customer. The replacement parts 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 limited warranty on accessories, not manufactured by the COMPANY, such as controls,
humidistats, pumps, etc., is limited to the warranty of the original equipment manufacturer from date of
original shipment of humidifier.
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 to the humidifier,
supply lines, drain lines, or steam distribution systems caused by freezing.
THE COMPANY reserves the right to change the design, specifications and performance criteria of its
products without notice or obligation.
Consulting, Sales and Service:
U.S.A.
835 Commerce Park Drive,
Ogdensburg, NY 1366-2209
CANADA
2740 Fenton Road
Ottawa, ON, K1T 3T7
Tel: 1.866.NORTEC1
Fax: 613.822.7964
Email: [email protected]
Website: www.humidity.com
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