Nortec NH-EL Series Installation And Operation Manual
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Nortec NH-EL Series Installation And Operation Manual

Electric steam humidifier
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Important: Read and save these instructions. This guide to be left with equipment.
NH-EL
Series
Installation and
Operation Manual
Includes installation, operation
maintenance and troubleshooting
information for your NH-EL Electric
Steam humidifier
2570435 D | 25 JUN 2014

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  • Page 1 Important: Read and save these instructions. This guide to be left with equipment. NH-EL Series Installation and Operation Manual Includes installation, operation maintenance and troubleshooting information for your NH-EL Electric Steam humidifier 2570435 D | 25 JUN 2014...
  • Page 2 CYLINDER # 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 or maintenance of recipient’s equipment.

  • Page 3: Table Of Contents

    Electrical NH-EL Wiring Diagram (Cylinder B) 83 Spare Parts External Controls 95 Warranty Options and Accessories 38 Start Up Installation Check NH-EL User Interface Start Up Procedure Information Screens Nortec Digital Controls NH-EL Pre-Start Up Checklist NH-EL Start Up Checklist...

  • Page 4: Introduction

     Regardless of selecting On/Off or modulating control method, NORTEC humidifiers must have a closed circuit across its On/Off security loop control terminal to operate. NORTEC highly recommends the use of a high limit humidistat and an air proving switch in series for this function.

  • Page 5: Receiving And Unpacking

    Receiving and Unpacking 1 Check packing slip to ensure ALL material has been delivered. 2 All material shortages are to be reported to NORTEC within 48 hours from receipt of goods. NORTEC assumes no responsibility for any material shortages beyond this period.

  • Page 6: Humidifier Components

    Humidifier Components High Water Sensor Condensate Return Plug NOTE: NH-EL 005-030 shown, component Fill Cup location may vary slightly for other Steam Outlet models. Control Terminal Strip Cylinder Plug Cylinder Cylinder Strap Touch Screen Display Fill Valve Auxiliary Drain Switch On/Off Switch Drain Canal Door Interlock Switch...

  • Page 7: Description Of Components

    Description of Components Table 1: Humidifier Components Component Function of Component Auxiliary Drain Drains water from cylinder by activating drain valve. Note that initiating a drain in this manner will not induce Drain Water Cooling. Condensate Return Provides a connection to return condensate to humidifier. Contactor Turns On/Off power to cylinder electrodes.

  • Page 8: Nh-El Models

    NH-EL Models The NH-EL with its Integrated Controller and state-of-the-art features and options is the most advanced electrode steam humidifier available. As well as controlling the operation of the humidifier, the Integrated Controller can be connected directly to BACnet and to the Internet. The NH-EL is available in capacities ranging from 5 lb/hr (2 kg/hr) to 200 lb/hr (90 kg/hr).
  • Page 9 Options and Accessories NORTEC provides a complete line of options and accessories for every humidification application. The following options and accessories are available and may have been delivered with your NH-EL humidifier. Refer to the installation instructions that came with the accessories for the proper installation and operation.
  • Page 10 Table 3: NH-EL Specifications Fill Net/Full Stand- Capacity NH-EL Weight Phase Volts Amps gal (l) Part No. lb (kg) Fuse Cylinder lb (kg) per min 2573379 15.6 110-120 5 (2.3) 0.13 (0.5) 18.3 2573380 45/55 15.9 220-240 2573382 0.13 2573383 13.7 10 (4.5) (21/25)
  • Page 11 Table 4: NH-EL Space Specifications NH-EL Fill Net/Full Stand- Capacity Weight Phase Volts Amps gal (l) Space lb (kg) Part No. Fuse Cylinder lb (kg) per min 5 (2.3) 110-120 2573429 17.2 0.13 (0.5) 2573430 83/93 2573431 16.5 220-240 0.13 2573432 14.2 10 (4.5)

  • Page 12: Options And Accessories

    Installation 10 Typical Humidifier Installation 11 Location 13 Mounting with Keyholes 14 Plumbing 15 Steam Distributor 16 Steam Lines and Condensate Return Instructions 21 Electrical 22 External Controls Control Wiring Control Location On/Off Control Wiring Keep Warm Wiring Modulating Control Wiring Transducer Control Wiring Double Unit Control Wiring 33 Remote Fault Option Wiring...
  • Page 13 Typical Humidifier Installation Mounting Pg 13 1ft (30 cm) 2 in. (5 cm) min. Steam 3 in. (7.5 cm) Screws 0” (0 cm) Distribution right 6 in. clearance Pg 15 (15 cm) min. 6” (15 cm) 36 in. (90 cm) right recommended min.
  • Page 14 Consult local and national codes before final location and installation. NORTEC does not accept responsibility for installation code violations.  Install only in areas with ambient temperature 41-104 °F (5 – 40 °C) relative humidity 5 - 95% (non condensing).
  • Page 15 Table 5: Clearances for Blower Packs on Low Speed* Minimum Min. Frontal Min. Overhead No. of Humidifier Min. Left side Min. Right side Clearance Clearance Blower Capacity Clearance Clearance Inches (cm) Inches (cm) Packs lbs/hr (kg/hr) Inches (cm) Inches (cm) 30 (13.6) 132 (336) 12(31)
  • Page 16 Mounting with Keyholes 1 The NH-EL Series humidifier is wall mounted using keyholes located on the back of the unit cabinetry. 2 Use #12 x 3 in. (7.5 cm) screws mounted into 2x4 studs or better. Two screws are needed for a single unit (NH-EL 010 to 100).
  • Page 17 Increase size if combining multiple drains as in double unit. *Pipe and water shut-off valve not supplied by NORTEC. Figure 7: Water Supply and Drain Connection Note:  Drain Water is very hot, do not drain to public sink ...
  • Page 18 Steam Distributor  Steam generated by the NH-EL may be distributed directly into a space with a built on or remote blower pack, or into an air handling system using either Nortec steam distributors or Nortec’s SAMe steam distribution manifold.

  • Page 19: Steam Lines And Condensate Return Instructions

    (0.22) Note: * The use of steam line other than copper, stainless steel tube or Nortec supplied steam line will void the warranty and may adversely affect the operation of the humidifier. ** Use one steam line per cylinder for NH-EL 150-200 humidifiers. Do not combine lines except at distributor using a Nortec adapter designed for that purpose and only if humidifiers operate in parallel.
  • Page 20 12 in. (30 cm) min drop to top of ‘P’ Trap ‘P’ Traps Use: - NORTEC 0.375 in condensate hose P Trap min - 1/4 in Med-L copper tubing, or 6 in. (15 cm) - 0.375 in stainless steel tubing...
  • Page 21 Hose cuff with clamps 1 ft (30 cm) 2 in. (5 cm) Condensate line min. Route to fill cup or drain Insulated copper steam line. Support so weight is not on 1 ft (30 cm) cylinder. min. before ‘P’ Trap any bend Use steam hose and clamps between cylinder and steam line.
  • Page 22 12 in. min. 12 in. (30 cm) (30 cm) (30 cm) (30 cm) 6. Only combine steam lines at steam distributor with Nortec adapter. Good Good Never Never Notes: 1. Units must operate in parallel. Notes: 1. Units must operate in parallel.
  • Page 23 8. Increase diameter either on down slope or install condensate trap. Good Good Never Never Best Best Sloping Down Sloping Down Nortec Nortec Condensate Condensate Trap Trap Increase = Increase = Condensate Condensate Blockage Blockage 9. Install condensate traps if steam line > 15 ft (4.5 m).
  • Page 24 Electrical Caution: Wiring to be performed by a licensed electrician. Three Phase NH-EL Three Phase Supply Ground Ground Neutral Dedicated Circuit Breaker Fused Disconect Single Phase NH-EL Single Phase Supply Ground . Ground Note: Optional internal fuses are not a substitute for external fuses. Dedicated external fused Three Phase Supply (Note: Load will be unbalanced)

  • Page 25: Control Wiring

    External Controls Control Wiring The following information is relevant to all controls, factory supplied or otherwise. For wiring use a minimum of 18 AWG and keep as short as possible. The NH-EL humidifier can be operated with two modulating inputs. Signal types must be the same (both demand or both transducer). The NH-EL can also be operated as On/Off.

  • Page 26: Space Humidification

    Note: Regardless of selecting on/off or modulating control method, Nortec humidifiers must have a closed circuit across its security loop control terminal to operate. Nortec highly recommends the use of a high limit humidistat and an air proving switch in series for this function.

  • Page 27: On/Off Control Wiring

    On/Off Control Wiring Air Proving Duct High Switch 2548731 - Digital Limit On/Off Humidistat Note: 1 Humidifier will run when circuit between terminal 1 and 2 on humidifier is closed. Terminal 1 is 24 VAC Hot, turn unit off to avoid shorting while wiring.

  • Page 28: Keep Warm Wiring

    2520273 - Digital On/Off Duct Humidistat Package Wire remote sensor to digital display as shown below, wire digital display to humidifier as shown above. Air Proving Duct High Digital On/Off Switch Limit Humidistat Duct Sensor Figure 17: Duct Sensor Wiring Keep Warm Wiring For the keep warm feature to work the security loop between terminal 1 and 2 on the low voltage terminal strip must be closed.
  • Page 29 Modulating Control Wiring SPACE Air Proving High Limit Humidistat Switch Control Humidistat Note: 1 Install On/Off controls or jumper between terminal 1 and 2 of humidifier in order to run. Terminal 1 is 24 VAC Hot, turn unit off to avoid shorting while wiring.
  • Page 30 2520261 - Digital Wall W/O Sensor Air Proving Duct High Switch Limit 1509858 - Wall Sensor 2520261 - Digital 1509858 - Wall Wall W/O Sensor Sensor Wire wall sensor to digital display as shown below, wire digital display to humidifier as shown for 1510142 - Digital Wall Humidistat.

  • Page 31: Transducer Control Wiring

    Transducer Control Wiring Air Proving Duct High Limit Humidity Control Switch 1509857 - 2-10V Duct 1509858 - 2-10V Wall Humidity Transducer Humidity Transducer Note: 1 Install On/Off controls or jumper between terminal 1 and 2 of humidifier Terminal 1 is 24 VAC Hot, turn unit off to avoid shorting while wiring.

  • Page 32: Double Unit Control Wiring

    Double Unit Control Wiring NH-EL double units (150-200) have two low voltage terminal blocks. The units can be configured to operate the cylinders in series or parallel from one set of control signals, or independently from two sets of control signals. See Double Mode (NH-EL 150-200 only) on page 56 for more information.
  • Page 33 Double Unit Control Wiring (Continued) Figure 26: Double Unit Parallel or Sequence Wiring Installation | 30...
  • Page 34 Double Unit Control Wiring (Continued) Independent– Two sets of control signals (Double Mode = Independent) wire the controls for Zone A (cylinder A) to terminal block A and wire the controls for Zone B (cylinder B) to terminal block B. All control signals must be the same type (Demand/Transducer). Zone B (Cylinder B) Controls Zone B (Cylinder B) Controls Zone A (Cylinder A) Controls...
  • Page 35 Outdoor Temperature Setback Sensor OUTDOOR TEMPERATURE Figure 29: Outdoor Temperature Reset  Each digital controller is equipped with an integrated reset function that can reduce the setpoint during cold weather operation. This will prevent condensation on windows and building structures. The above graph illustrates how the setpoint reset feature operates. ...

  • Page 36: Remote Fault Option Wiring

    Remote Fault Option Wiring The NH-EL remote fault option includes 4 relays that can provide remote status indication. The relays are mounted to a remote fault board which is located as shown in Figure 31: Remote Fault Wiring. The PCB with the relays includes markings which indicate the function of each terminal on the board.

  • Page 37: Multi Mode Wiring

    Multi Mode Wiring  Connect up to 16 units (equivalent of 1600 lb/hr) using 18-24 AWG multi-strand, twisted pair, shielded cable.  Connect humidistats/transducers and security loop to master unit only.  Jump the security loops on slave units.  When connecting double units connect only to driver board A. ...

  • Page 38: Modbus Digital Control

    NH-EL and the range of adjustable parameters. Adjustable parameters are set using the LCD touchscreen of the NH-EL in the Factory Menu Level which is not accessible to users. If the parameters must be changed from default, refer to the Nortec document 2560599 – Using Modbus with Nortec Humidifiers.

  • Page 39: Options And Accessories

    Options and Accessories Note: For installation of options and accessories follow the instructions that are provided with them. Blower Packs The NH-EL Space humidifier models come pre-assembled with a Blower Pack mounted on the top. Both smaller steam capacity NH-EL models (5-30 lbs/hr) and medium steam capacity NH-EL models (50-100 lbs/hr) can be ordered for direct In-Space steam distribution.

  • Page 40: Fill Cup Extension

    Condensate Cooling (External) Pneumatic and electric drain water coolers are available from Nortec for installation outside the humidifier or on condensate drains from steam traps, distributors, and SAMe headers. If condensate cannot be routed back to the humidifier tank via the humidifier’s fill cup then an external condensate cooler may be required to meet regulations restricting the temperature of hot water that can be fed to drain.

  • Page 41: Start Up

    39 Installation Check 40 NH-EL User Interface Auxiliary Drain Switch Door Interlock Switch 41 Start Up Procedure 42 Information Screens 43 Nortec Digital Controls Demand Control On/Off Control Transducer Control 44 Multi Unit Operation 45 Modbus Control 45 BACnet MS/TP and IP...
  • Page 42 Installation Check Before turning on power to the NH-EL, inspect the installation to ensure that it was carried out correctly. Refer to Figure 35: Installation Check, to the NH-EL Pre-Start Up Checklist on page 46, and to the chapter on Installation that starts on page 9. SPACE Min 10 ft (3 m) 2 x duct height...
  • Page 43 NH-EL User Interface Touch Screen Display Provides status information as well as a user interface for configuring the humidifier. Status LED Single LED changes color to indicate status. Auxiliary Drain Switch (Can be used to drain cylinder without software) On/Off Switch (Turns humidifier On/Off) Door Interlock Switch (prevents contactor from...
  • Page 44 6 If On/Off or a control humidistats have been installed, check and adjust the control setpoint on the control and high limit humidistat (see Nortec Digital Controls on page 43). If transducer controls have been installed then adjust the humidity setpoint using the touch...
  • Page 45 Information Screens Use Up/Dn arrows  In addition to the main status screen, the NH-EL to move to other screens. includes several information screens which provide additional information about the humidifier. The additional screens can be reached by pressing the “(i) About” button at the bottom of the status screen display.
  • Page 46 Nortec Digital Controls Nortec provides optional On/Off, Modulating Control, or Transducer digital controls. Figure 38 and Figure 39 show the function and meaning of the Digital Control’s display and buttons. All controls are available either wall mounted or with a remote sensor for duct mounting.

  • Page 47: Multi Unit Operation

    Note: It is possible to field calibrate NORTEC Digital controls if the displayed humidity is found Note: It is possible to field calibrate NORTEC Digital controls if the displayed humidity is found to be to be different than a known trusted source. See Digital Humidistat on page 74 of different than a known trusted source.

  • Page 48: Modbus Control

    Nortec OnLine enables a humidifier to communicate and be monitored through the Internet. Nortec OnLine is built into the NH-EL. See Nortec Online on page 60 for configuring the NH-EL to operate on Nortec Online. See supplemental Building Management manual for more information.
  • Page 49 NH-EL Pre-Start Up Checklist Unit Serial #: _________________ Tag: _______________ Unit type: _______ __________ Voltage: ________V/_____ph Steam output: ______lb/hr Cylinder type: Customer/Job: Address: Water Quality:  Well water  City water  Softened water  Humidifier Mounting: (Clearances around the unit) ...
  • Page 50 NH-EL Start Up Checklist Unit Serial #: _________________ Tag: _______________ Unit type: _______ __________ Voltage: ______V/____ph Steam output: ______ lb/hr Cylinder Type: Customer/Job: Address: Preliminary:  Pre-start-up checklist completed? yes  no  If no, perform Pre-Start-up Checklist before starting humidifier. Start-Up Procedure: The prerequisites for the humidifier filling and contactor pulling in to make steam are as follows: ...

  • Page 51: Operation

    Operation 49 LED Status Lights 51 How the Humidifier Works Steam Generation Drains Steam Distribution 52 Selecting an RH Setpoint 54 NH-EL Humidifier Configuration Navigating the NH-EL Software Main Menu (NH-EL Password) Configuration Submenu Features Submenu Controls Submenu Multi Mode General Submenu Comms.
  • Page 52 LED Status Lights The keypad and display panel includes a single tri-color LED which provides information about the humidifier status. Status LED The NH-EL has a single LED that changes color to indicate Status Red - Fault Indicates the controller has detected a fault condition and stopped humidifier.

  • Page 53: Humidifier Schematic

    Humidifier Schematic Steam Line Steam Distributor Condensate Return Fill Cup Driver Board Control Board Cylinder Overflow Current Sensor High Water Sensor Electrodes Contactor Fill Valve Drain Valve Drain Canal External Air Internal Air Air Gap Figure 41: Humidifier Schematic Maintenance and Servicing | 50...

  • Page 54: Steam Generation

    How the Humidifier Works The NH-EL is an atmospheric steam generator that uses heat generated by electrical current flowing between submerged electrodes to generate heat and steam. The NH-EL is designed for air humidification via steam distributor, blower pack, or steam manifold (SAM-e). Steam Generation ...

  • Page 55: Selecting An Rh Setpoint

    Duct High Limit – The duct high limit is intended to prevent saturation and wetting in duct work at high load conditions. NORTEC recommends a setting of 85% for the duct high limit. It may be necessary to reduce this setting if the duct work is very cold or in contact with exterior cold surfaces.
  • Page 56 Steam Line SAM-e Manifold Condensate Drain “P” Trap Figure 42: SAM-e Manifold Blower Pack Steam Line Condensate Drain “P” Trap Figure 43: Remote Blower Pack 53 | Maintenance and Servicing...

  • Page 57: Navigating The Nh-El Software

    NH-EL Humidifier Configuration Navigating the NH-EL Software Figure 44: Navigating the NH-EL Software Main Menu (NH-EL Password) The menu levels of the NH-EL are password protected to prevent configuration changes by unauthorized persons. In order to access the menu level press the Menu icon and when prompted enter the password 0335.

  • Page 58: Configuration Submenu

    (Default = Off). Dfactor Increases or decreases the drain time used to control cylinder water conductivity. It should not normally need to be adjusted. A NORTEC representative will provide instructions if it should need to be adjusted. (Default = 1.0). Drain Mode Configures when a corrective drain will be performed in case the software detects excess current.

  • Page 59: Controls Submenu

    Channel 1/2 Type Configures the Volt or amp range of the control signal connected to Channel 1/2. Can be used to configure the humidifier to be On/Off. However, Nortec recommends using the Security Loop for On/Off applications. Maintenance and Servicing | 56...

  • Page 60: Multi Mode

    (Controls Submenu Continued) Note: Set P, Prop Band, and Int Time will only be displayed in the menu if Control Mode is set to RH (P) or RH (PI). Setpoint Channel 1/2 Sets the humidity setpoint value. The humidifier will attempt to maintain this humidity level in the space where the control transducer is installed.

  • Page 61: General Submenu

     Slave 1 (200 lb/hr) - Zero Out = 11%, Full Out = 11+(200/(50+200+200))= 55%  Slave 2 (200 lb/hr) - Zero Out = 55%, Full Out = 55+(200/(50+200+200))=99% Note: To obtain the best turn down ratio possible the smallest unit should be configured to come on first.

  • Page 62: Comms. Submenu

    Comms. Submenu The Comms. Submenu allows the user to configure the humidifier for operation on a TCP/IP network, Modbus network, or BACnet IP network. Allow Remote Disable Sets whether the humidifier can be disabled remotely by a Building Management System. Select Yes or No and press checkmark to save settings.
  • Page 63 Online Status: Displays the status of Nortec Online either Connected, Disconnected or Waiting for registration PIN: A unique PIN number assigned and written to the humidifier by the Nortec Online server Serial Number: Displays the serial number of the humidifier. JID: A unique Jabber ID used by the humidifier to communicate with the Online server, including registration, real time data transfer and historical data downloading.

  • Page 64: Service Submenu

    Export History Allows export of the service history to a USB memory stick plugged into the humidifier controller USB port. The file can be sent to Nortec for analysis. Input Diagnostics Displays a list of the humidifier’s inputs and the current status/value.

  • Page 65: Maintenance And Servicing

    Maintenance and Servicing 63 Required Maintenance Cylinder Spent Warning / Fault Replacement Cylinder Removing the Cylinder Drain Valve Cleaning Installing the New Cylinder 68 Extended Shutdown Starting After Extended Shutdown 69 NH-EL Maintenance Checklist Maintenance and Servicing | 62...

  • Page 66: Cylinder Spent Warning / Fault

    Required Maintenance The NH-EL humidifier has been designed to require very little maintenance. Regular maintenance consists of checking the humidifier to ensure it is in good condition, replacing the cylinder when the software advises that the cylinder is spent (and changing the o-ring), as well as cleaning out the drain valve whenever the cylinder is replaced.

  • Page 67: Replacement Cylinder

    Figure 47: NH-EL Cylinder Note: Nortec recommends keeping several replacement cylinders in stock throughout the humidification season. This will prevent possible downtime when the humidifier reports cylinder end of life. Maintenance and Servicing | 64...

  • Page 68: Removing The Cylinder

    Removing the Cylinder Warning  Disconnect main power at the external disconnect before any servicing.  The plumbing and electrical compartments contain high voltage components and wiring. Access should be limited to authorized personnel.  Cylinder may be hot, take care when handling. 1 Drain the existing cylinder.

  • Page 69: Drain Valve Cleaning

    Drain Valve Cleaning Always clean the drain valve before installing a new cylinder. Scale from the spent cylinder may have fallen into the drain valve and could prevent its proper operation. To properly clean the drain valve it must be removed and disassembled. Note: Be sure to reattach the green ground wire to reduce the risk of electrical shock.

  • Page 70: Installing The New Cylinder

    The Maximum torque is 12 in-lbs for 7/8”Nortec steam hose and 16 in-lbs for 1 3/4" Nortec steam hose. 3 Attach color coded cylinder plugs to the corresponding color coded cylinder pin. Push down completely.

  • Page 71: Starting After Extended Shutdown

    Extended Shutdown Should it be required to disconnect power to the humidifier for a period of extended shut-down, always drain the cylinder first. 1 Utilize the Drain Cylinder function on page 61 2 Wait until the humidifier is completely drained (20 minutes). 3 Turn the On/Off switch to the Off position.
  • Page 72 NH-EL Maintenance Checklist Model #: _________________ Serial #: _________________ Tag: ________ Cylinder #: Cylinder / System Check    Warning Cylinder Spent Fault Cylinder Spent (If software displays Warning Cylinder Spent then cylinder must be replaced)   Yellow LED On with Max Level Warning. (If Yellow LED is On with Max Level Warning and cylinder is not new, cylinder may have to be replaced soon.) ...

  • Page 73: Troubleshooting

    Troubleshooting 71 Organization of Troubleshooting Chapter Troubleshooting Requirements 72 General Troubleshooting Humidifier Steam Distributors SAM-e Blower Pack Digital Humidistat 75 NH-EL Warnings and Faults Warnings Faults Clearing a Fault 81 NH-EL Wiring Diagram (Cylinder A) 82 NH-EL Wiring Diagram (Cylinder B) Troubleshooting | 70...

  • Page 74: Troubleshooting Requirements

    NH-EL wiring diagram is also included at the end of this chapter for reference purposes.  When contacting your local representative or NORTEC for troubleshooting assistance, please ensure the serial number has been obtained for reference purposes.
  • Page 75 General Troubleshooting The following section provides general guidelines for troubleshooting the NH-EL humidifier and auxiliary components. For detailed troubleshooting information refer to the manuals that were provided with the auxiliary equipment and to Table 11: Troubleshooting Warnings and Faults later in this chapter. Humidifier Table 10: General Troubleshooting Symptom...

  • Page 76: Steam Distributors

    Symptom Cause Corrective Action(s) 5 Check Manual Capacity on status 5 Capacity has been manually screens. Adjust “Manual Capacity (A/B)” limited under “0335” / ”Configuration” / ”Features” / if necessary. 6 Check if “Max Level”: “Max Level” is 6 Low conductivity water displayed on the humidifier’s display.

  • Page 77: Blower Pack

    SAM-e Symptom Cause Corrective Action(s) SAM-e spitting out water 1 “P” Trap too close to SAM-e 1 “P” trap must be at least 12 in (30 cm) below header. Relocate if required. 2 Condensate line not sloped 2 Ensure line is sloped sufficiently to sufficiently carry condensate produced.

  • Page 78: Clearing A Fault

    NH-EL Warnings and Faults The self-diagnostic system built into the NH-EL is continually monitoring the operation of the humidifier. When the display shows a warning or fault condition you can find out more information about the fault by pressing on the warning/fault box. This will display a screen listing any warnings/faults that are in effect.
  • Page 79 3 Configure controls but not connected to correctly in “Control BACnet No Modbus/ network Setting” level of Nortec Online BACnet / Nortec software (see Operation Online / Multi Staged Chapter). Mode signal Modulation 4 Improper wire used 4 Use 120 Ohm...
  • Page 80 Cylinder Spent covered with humidifier cannot meet (see maintenance scale. demand chapter) 5 Water supply too 5a Contact Nortec conductive representative for recommendation on alternate cylinder 5b Change the water Current has Excess Current supply exceeded 130%...
  • Page 81 System Display Message Cause Corrective Action(s) Detected 4 Observe operation to 4 Humidifier short cycling Foaming Cylinder ensure humidifier can Warning / Fault normally run long enough to perform a drain. If not turn on the Short Cycle feature on page 56.
  • Page 82 System Display Message Cause Corrective Action(s) Detected 2 Check if water level is at 2 Water foaming top of cylinder. If water is not at top there may be foam in the cylinder. Consider the Foam Mode feature on page 1 Current transformer 1 Open disconnect, loose on driver board...
  • Page 83 System Display Message Cause Corrective Action(s) Detected 1 Master unit not 1 Check configuration of configured correctly master as outlined in Multi Mode Configuration 2 Slave unit not 2 Check configuration of configured correctly slave as outlined in Multi Mode Staged Slave unit not Configuration...
  • Page 84 CONTACTOR INLET DRAIN LEV. SENSOR Master/Slave Port 24Vac CURRENT SENS High Water Plug Cylinder 2,3, and 6 electrode NH-EL SERIES HUMIDIFIER (Cylinder A) WIRING DIAGRAM DIAGRAM No. 2569828 REV. E Date: July 4, 2014. Figure 52: Wiring Diagram for NH-EL (Cylinder A)

  • Page 85: Nh-El Wiring Diagram (Cylinder B)

    DIP switch 1 and 2 must be in the ON position Cylinder 2,3, and 6 electrode NH-EL SERIES HUMIDIFIER (Cylinder B) WIRING DIAGRAM DIAGRAM No. 2569829 REV. D Date: Jul 4, 2014 Figure 53: Wiring Diagram for NH-EL (Cylinder B)

  • Page 86: Spare Parts

     Read across the table to the column which corresponds to the number of phases, voltage and capacity of your unit.  To order parts, or help in identifying the part you need, contact your local Nortec agent. 83 | Spare Parts...
  • Page 87 NH-EL Plumbing Parts Figure 54: NH-EL Plumbing Parts Spare Parts| 84...
  • Page 88 Table 12: NH-EL 005-30 Plumbing Parts List SINGLE PHASE THREE PHASE MODEL Volts/Ph NORTEC ITEM PART NO. DESCRIPTION 1519002 CYLINDER 202 1519003 CYLINDER 203 1519004 CYLINDER 204 1519020 CYLINDER 321 1519025 CYLINDER 305 1519029 CYLINDER 309 1519031 CYLINDER 311 1519023...
  • Page 89 NH-EL Plumbing Parts Figure 55: NH-EL Plumbing Parts Spare Parts| 86...
  • Page 90 Table 13: NH-EL 050-200 Plumbing Parts List THREE PHASE MODEL Volts/Ph NORTEC ITEM PART NO. DESCRIPTION 1519080 CYLINDER 621 CYLINDER 605 1519085 1519083 CYLINDER 603 DRAIN CHANNEL 2573514 VALVE DRAIN + 24V 1456000 COIL FILL CUP 2574142 ASSEMBLY LARGE LARGE STEAM LINE...
  • Page 91 NH-EL Electrical Parts Figure 56: NH-EL Electrical Parts Spare Parts| 88...
  • Page 92 Table 14: NH-EL 005-030 Electrical Parts List SINGLE PHASE THREE PHASE MODEL Volts/Ph ITEM NORTEC DESCRIPTION PART NO. 2574148 1 1 1 1 1 1 1 1 1 1 CONTACTOR 30 AMP 1PH 2574149 1 1 1 1 1 1 1 1...
  • Page 93 NH-EL Electrical Parts Figure 57: NH-EL Electrical Parts Spare Parts| 90...
  • Page 94 Table 14: NH-EL 050-200 Electrical Parts THREE PHASE MODEL Volts/Ph ITEM NORTEC DESCRIPTION PART NO. 2574149 2 2 1 1 CONTACTOR 30 AMP 3PH 2574150 CONTACTOR 40 AMP 3PH 2574151 CONTACTOR 50 AMP 3PH 2574152 CONTACTOR 62 AMP 3PH 2574154...
  • Page 95 Blower Pack Parts Figure 1: Blower Pack Parts Figure 58: Blower Pack Parts Spare Parts| 92...
  • Page 96 Table 15: Blower Pack Parts List Item Description Part Number Distributor Assembly 2573805 Diffuser Assembly 2573806 Switch Assembly 2573807 Thermostat Assembly 2573808 Relay Assembly 2573809 Capacitor 8uF (fastening nut included) 2573810 Capacitor, 20uF (fastening nut included) 2573811 Fan Assembly 2573812 Spare fastener kit (included low voltage connector) 2573813 Power Cable (Connector and Cable together)
  • Page 97 This Page Intentionally Left Blank Spare Parts| 94...

  • Page 98: Warranty

    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.
  • Page 99 U.S.A. 826 Proctor Avenue Ogdensburg, NY 13669 CANADA 2740 Fenton Road Ottawa, Ontario K1T 3T7 TEL: 1.866.NORTEC1 FAX: 613.822.7964 EMAIL: nortec@humidity.com WEBSITE: www.humidity.com...

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