Attachment_5_-_Steam_Humidifier_Operation_and_Maintenance_Manual.pdf

OPERATION AND

MAINTENANCE MANUAL

Electrode Steam Humidifier Nortec EL

4_ A

E N

Humidification and Evaporative Cooling

IMPORTANT! Read and save these instructions. This manual to be left with the equipment.

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 nortec@humidity.com, www.humidity.com

Proprietary Notice This document and the information disclosed herein are proprietary data of Nortec Humidity Ltd. Neither this docu-ment, 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 2015, Nortec Humidity Ltd, All rights reserved.

Technical modification rights reserved.

iiiContentsNortec EL 2582954_A EN 1511

Contents

2 For Your Safety 3

iv Contents 2582954_A EN 1511 Nortec EL

9 Wiring Diagrams 81

1IntroductionNortec EL 2582954_A EN 1511

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, please 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, please contact your 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 catchword "CAUTION" in conjunction with the general caution symbol is used to provide safety instructions that, if neglected, may cause damage and/or malfunction of the unit or damage to property.

WARNING!

The catchword "WARNING" in conjunction with the general warning symbol is used to provide safety instructions that, if neglected, may cause injury to personnel. Other specific warning symbols may also be used in place of the general symbol.

DANGER!

The catchword "DANGER" in conjunction with the general danger symbol is used to provide safety instructions that, if neglected, may cause severe injury to personnel or even death. Other specific danger symbols may also be used in place of the general symbol.

2 Introduction 2582954_A EN 1511 Nortec EL

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 cross-references to these publications have been added in this manual.

Storage of Manual Keep this manual in a place where it is safe and readily accessible. If the equipment is moved to another location, please make sure that the manual is passed on to the new user.

If the manual is lost or misplaced, please contact your Nortec representative.

3For Your SafetyNortec EL 2582954_A EN 1511

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 quali-fied, 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 85 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 dis-tributors, 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.

4 For Your Safety 2582954_A EN 1511 Nortec EL

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 Nortec representative.

5Product OverviewNortec EL 2582954_A EN 1511

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 controller 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).

Figure 1:

141516

Nortec EL Steam Humidifier (Medium size model shown)

6 Product Overview 2582954_A EN 1511 Nortec EL

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 inlet 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 inlet 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 30- 60 minutes for water to heat sufficiently to produce steam).

When the steam output reaches the requested level, the inlet 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 inlet 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 inlet 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 inlet 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.

7Product OverviewNortec EL 2582954_A EN 1511

Figure 2:

min. 1 0 ft

(3m)

B or min. 8

-10 ft (2.4-3m) n

1, 2

2, 3

Nortec EL Duct Humidification

control of space in return duct, or high limit in supply duct)

8 Product Overview 2582954_A EN 1511 Nortec EL

Figure 3:

5, 6

Nortec EL Direct Room Humidification

9CommissioningNortec EL 2582954_A EN 1511

4 Commissioning

4.1 General

The Nortec EL steam humidifier must be commissioned and operated only by personnel who are well qualified and properly trained to use the Nortec humidifier. It is the customer's responsibility to verify the qualifications of personnel.

4.2 Commissioning

The unit must always be commissioned for the first time by a service technican from your Nortec repre-sentative, or by personnel who are well trained and authorized by the customer.

The steps are in the following order:

1. Inspect the steam humidifier for proper installation.

2. Inspect the electrical supply installation.

3. Inspect the water supply installation.

4. Inspect the steam and condensate line installation.

5. Flush the water supply line.

6. Configure the controls and the Nortec EL humidifier.

7. Conduct performance tests, including control and monitoring devices.

8. Fill out the commissioning protocol documents.

10 Commissioning 2582954_A EN 1511 Nortec EL

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11Operator InterfaceNortec EL 2582954_A EN 1511

5 Operator Interface

5.1 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 12 for a description of each of these elements.

Figure 4:

Nortec EL Operator Interface

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 ac-cessing the control cabinet in the humidifier.

12 Operator Interface 2582954_A EN 1511 Nortec EL

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 13 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 Allows the user to turn the Nortec EL humidifier on or off.

13Operator InterfaceNortec EL 2582954_A EN 1511

5.2 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.

5.2.1 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.

Figure 5:

Home Screen Elements

the appropriate tab to view its status on the Home screen.

14 Operator Interface 2582954_A EN 1511 Nortec EL

5.2.2 General Navigational Elements

Figure 6 show the general navigational elements/features of the screens on the touchscreen display.

Figure 6:

1 2 3 4

General Navigational Elements

5.2.3 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 15.

Table 2: Operating Status Descriptions

Message Description

Idle 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 auto-matically 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.

15Operator InterfaceNortec EL 2582954_A EN 1511

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 ad-dition, 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 main-tenance/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 mes-sage when a condition with a "Fault" status is active. The humidifier stops producing steam.

5.2.4 Maintenance and Fault Status

The Service/Warning/Fault status area of the Home screen (refer to Figure 5 on page 13) shows mainte-nance 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.

16 Operator Interface 2582954_A EN 1511 Nortec EL

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 condi-tion, the Nortec EL humidifier will not produce steam until the fault condi-tion is cleared.

In addition, the status LED turns red in color.

5.2.5 Help

Touch the <Help> button on the Home screen (refer to Figure 5 on page 13) to view your local technical support help details.

5.2.6 System Information

Select the <About> button on the Home screen (refer to Figure 5 on page 13) to view the system informa-tion for your Nortec EL steam humidifier. The tab structure for this selection is shown below.

About > "General Tab" on page 17 "Timer Cylinder A (Timer Cylinder B) Tab" on page 18 "Service Cylinder A (Service Cylinder B) Tab" on page 18 "Operating Cylinder A Tab" on page 18 "Operating Cylinder B Tab" on page 20 "Features Tab" on page 21 "Network Tab" on page 22

17Operator InterfaceNortec EL 2582954_A EN 1511

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 con-trol software. Select the field to update the control software or the driver board firmware – refer to "Software Update Tab" on page 50 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.

18 Operator Interface 2582954_A EN 1511 Nortec EL

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 tim-ers 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 capac-ity 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 am-peres) 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".

19Operator InterfaceNortec EL 2582954_A EN 1511

Operating Cylinder A Tab, continued...

–– Channel 1: shows the input signal for Channel 1. If con-figured 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 33 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 con-figured 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 cal-culated for steam cylinder A, as a percentage of maximum capacity.

–– Blower Pack: shows the status of the blower pack securi-ty 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".

20 Operator Interface 2582954_A EN 1511 Nortec EL

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 am-peres) 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 repre-sents 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 33 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 cal-culated 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 con-nected 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".

21Operator InterfaceNortec EL 2582954_A EN 1511

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 27 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 conductiv-ity function. Select the field to enable or disable the func-tion. 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 func-tion. 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.

22 Operator Interface 2582954_A EN 1511 Nortec EL

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 commu-nications protocol.

Note: This field appears only if the Modbus communica-tion 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 proto-col is disabled.

BACnet Network

–– BACnet: shows the current selection for the BACnet com-munication 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 ena-bled. 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.

–– Online Status: shows the connection status of the humidi-fier to Nortec Online. Refer to Nortec Online for more details.

–– IP Address: shows the IP address of the Nortec EL steam humidifier.

23Operator InterfaceNortec EL 2582954_A EN 1511

5.2.7 Main Menu

Select the <Main Menu> button on the Home screen to view the Main menu. The Main menu and its contents are password-protected. Refer to Figure 7. Enter the password "0335" to access the Main menu.

Figure 7:

33 50

Main Menu Access

To access the Configuration menu and its features, refer to "Configuration Menu" on page 25.

To access the Service menu and its features, refer to "Service Menu" on page 46.

To access the Administrator menu and its features, refer to "Administrator Menu" on page 49.

24 Operator Interface 2582954_A EN 1511 Nortec EL

The structure of the Main menu and its sub-menus is shown in Table 5.

Table 5: Main Menu Structure "Main Menu" on page 23 >

"Configuration Menu" on page 25 >

"Features Menu" on page 25 >

"Water Management Tab" on page 25

"Operation Tab" on page 27 > "Manual Capacity Tab" on

"Accessory Board Tab" on page 30

"Control Settings Menu" on page 31 >

"Basic Tab" on page 31

"PI Control Parameters (A and B) Tab" on page 33

"Setpoint Tab" on page 33

"RH Alerts Tab" on page 35

"Multi-Unit Operation Tab" on page 36

"General Menu" on page 38 >

"Basic Tab" on page 38

"Time/Date Tab" on page 39

"Communication Menu" on page 40 >

"Remote Enable Tab" on page 40

"Network Parameters Tab" on page 40

"BMS Timeout Tab" on page 41

"Modbus Parameters Tab" on page 42

"BACnet Parameters Tab" on page 42

"Nortec Online Tab" on page 44

"Remote Fault Board Tab" on page 45

"Service Menu" on page 46 >

"General Service Tab" on page 46

"Fault/Service History Tab" on page 46

"Diagnostics Tab" on page 47 >

Input Diagnostics tab > "Cylinder (A and B) Tab" on

Relay Diagnostics tab > "Remote Fault Board Tab" on

"Accessory Board Tab" on

"Administrator Menu" on page 49 >

"Password Setting Tab" on page 49

"Software Update Tab" on page 50

"Software Settings Tab" on page 50

25Operator InterfaceNortec EL 2582954_A EN 1511

5.2.7.1 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 24 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.

–– Idle Mode: allows you to set the idle function of the hu-midifier when it is in standby mode.

Options: Idle Only – the humidifier waits in-definitely 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 stand-by 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.

26 Operator Interface 2582954_A EN 1511 Nortec EL

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.

–– Forced Drain Interval: allows you to set the number of run hours after which a forced cylinder drain takes place.

–– D(rain) Factor: allows you to adjust the drain time calcu-lated by the Nortec EL's auto-adaptive drain algorithm.

–– Drain Mode: allows you to select when the humidifier will perform a drain because current draw exceeds require-ments. 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 monitor-ing 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.

–– Cal. Drain Mode: allows you to select how the steam cyl-inder 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 calcu-lated drain time.

Factory setting: Prefill

27Operator InterfaceNortec EL 2582954_A EN 1511

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 dur-ing selected days and times of the day.

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 set-tings. At least two events must be set. The On/Off timer overrides the Capacity timer.

–– Manual Capacity A: allows you to set a fixed maxi-mum output capacity at the specified time and date.

28 Operator Interface 2582954_A EN 1511 Nortec EL

Operation Tab, continued...

–– On/Off Timers: allow you to enable or disable the On/Off timer function to permit disabling of steam production dur-ing specified days and times.

Timer: allows you to enable or disable the On/Off timer function.

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 disen-gage 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 disen-gaged during draining.

Off – the main contactor remains engaged if humidification is in progress.

Factory setting: Off

–– Fill Stop: allows you to set the inlet valve to close dur-ing filling (to prevent overshooting the demand) when the heating current draw equals 95% of the demand.

Options: On – the inlet valve closes when the current draw equals 95% of demand.

Off – the inlet valve remains open until 100% of the demand is achieved.

Factory setting: Off

29Operator InterfaceNortec EL 2582954_A EN 1511

Operation Tab, continued...

–– Overcurrent:

CAUTION! Do not adjust this value unless instructed to do so by a Nortec representative.

–– Low Conductivity: allows you to adjusts the end-of-cylinder-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.

30 Operator Interface 2582954_A EN 1511 Nortec EL

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.

–– Fan Delay: allows you to set the time duration for which the external fan continues to run (to remove any addi-tional steam that may have continued to enter the air duct post-humidification).

–– Hygiene Flush: allows you to enable or disable an exter-nal 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.

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.

–– Hygiene Flush Time: allows you to set the time dura-tion of the flush.

31Operator InterfaceNortec EL 2582954_A EN 1511

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 24.

Basic Tab

–– Source: allows you to select the source of incoming con-trol/humidity signal to the humidifier.

Options: Analog – the control/humidity signals are from analog sensors or humidis-tats connected to the humidifier's low voltage terminal block.

Modbus – the control signals are from the BMS via the Modbus com-munication 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 opera-tion 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 modu-lated 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

32 Operator Interface 2582954_A EN 1511 Nortec EL

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 inter-nal P (proportional) controller.

RH PI – control signal uses the internal PI (proportional-integral) controller.

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 inter-nal P (proportional) controller.

RH PI – control signal uses the internal PI (proportional-integral) controller.

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.

–– Control Channels: allows you set whether the humidifier is controlled by one or two signals.

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 oper-ate 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 oper-ate 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

33Operator InterfaceNortec EL 2582954_A EN 1511

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 set-point value.

Setpoint Tab

Allows you to set a fixed humidity setpoint…