Instruction/ maintenance manual of the product NHDI Nortec
Go to page of 40
NHSC / NHDI Resistive Element Steam Humidifiers Installation, Operation, Maintenance, and Troubleshooting Guide IMPORTANT: Read and save these instructions.
Table Of Contents INSTALLATION 1 RECEIVING & UNPACKING EQUIPMENT ................................1 PRE-INSTALLATION CHECKPOINT ...................................1 BASIC HUMIDIFIER CONFIGURATION ..................................1 LOCATION & MOUNTING .
RESETTING FAULT INDICATION “ERROR” .............................2 1 HEATING ELEMENT REPLACEMENT INSTALLATION INSTRUCTIONS ................2 1 TROUBLESHOOTING ··········································2 3 CONTROL CIRCUIT TERMINAL BLOCK .
INSTALLATION RECEIVING & UNPACKING EQUIPMENT 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.
LOCATION & MOUNTING HUMIDIFIERS NHSC / NHDI Series humidifiers are designed to mount on a suitable wall or vertical surface. Do not sit the unit on floor due to clearances required for plumbing, electrical, and control entrances.
and visible from within the plumbing section of the unit, and that the unit’s flanges are properly contained within the wall bracket. 5. Install tank bracket. See Figure #5. (NHSC Version only). Mounting the scale tank. (NHSC Version only). 6. Make sure humidifier is level.
2. All NHSC / NHDI Series blower packs consist of a steel cabinet containing: blower/motor powered by voltage directly from the humidifier, fuse, relay, speed select switch, stainless steel steam dist.
-5- Low V oltage Controls Wiring 24 V ac Primary Wiring Copper Funnel Drain (by others) LCD Keypad Display with LED S tatus Scale Collector T ank NHSC Air Gap Drain Line 1.75" O.D. Humidistat S team Line Connection NHSC NHDI uses Nortec steam hose 1.
PLUMBING All water supply and drain line connections should be installed in accordance with local plumbing codes and should be copper or other material suitable for potable water at 140ºF (60ºC). WATER SUPPLY LINE - NHSC 1. The humidifier is intended to operate on potable water.
STEAM LINE AND CONDENSATE RETURN LINE 1. Refer to the installation manual of the steam distribution system used in your application. Steam Distributor Form #XX-231, SAM-e Form #XX-249, and Blower Pack Form #XX-277. ELECTRICAL PRIMARY VOLTAGE SUPPLY WIRING TO HUMIDIFIER 1.
-8- L1 L2 Ground Ground Wire Ground Leg 2P o l e Te r m i n a l Block Dedicated Circuit Breaker Or Disconnect - Single Phase Unit. - Single Phase Supply . - Required V oltage Between L1 And L2. - Load Balanced. L1 L2 Ground Ground Wire Ground Leg 2P o l e Te r m i n a l Block - Single Phase Unit.
4, All blower packs require field wiring between two pole primary voltage terminal blocks and two low voltage control (class 1 circuit wiring required) terminal strips; one of each located in the humidifier and the remote blower pack cabinet. To properly access the primary block on the humidifier, it is necessary to open the side pan.
temperature are uniform and representative of spaces being humidified. 3. Mount duct high limit humidistat downstream of steam distributors far enough that, under normal humidity and air flow conditions, steam will have been fully absorbed (typically at least 10 feet).
OPTIONAL MODULATION (CONTINUOUS CONTROL) PACKAGES BY NORTEC 1. Modulation (continuous control) “packages” are offered as accessories by NORTEC. Power supply comes from inside NHSC / NHDI humidifiers. 2. NORTEC provides the humidity set point circuitry and sensor(s) for wall or duct mounting or both as pre-selected when ordering the option.
STEAM GENERATION REGULATION The steam is produced in the steam tank by resistive heating element technology. An external or the internal regulator for connection as required control the steam production fully variably from 3 to 100%.
• Green LED lit : Unit producing steam • Yellow LED flashing : Major or minor servicing due. The relevant notice is shown in the display. • Red LED flashing : There is a problem. The unit is trying to solve the problem. The relevant warning message appears in the display.
INTERROGATION OF THE OPERATING STATUS The NHSC / NHDI operating and display unit has a “display menu” from which various operating parameters can be viewed. Note: It is not possible to change the values on the display level. Operation Call up the display level with < ê >o r< é >.
-1 5- Note: The stated times are based on 100% steam capacity. If the operation is at a lesser capacity, the time should be extended accordingly. The servicing intervals are set using the rotary switch “S2” on the control board.
power limit screen. To change the power limit, simply press the down aroow key to desired capacity and press enter to save that new value. Press menu key to exit parameter screen. Inlet Valve Correction Set inlet valve correction (cycle ratio) in % of standard setting value to balance out water pressure variations.
Unit Type Warning: In order to eliminate faults, the steam humidifier must be switched off and secured against unintentional re-connection. Take care that the electricity supply to the main contactor is disconnected (check with voltage meter). Only allow trained and qualified personnel to repair faults.
Minor Maintenance When The yellow LED flashes and the message “minor servicing due” appears, alternating with the normal operation indication. Work Carry out the periodic inspection items. Empty the steam cylinder and clean the scale collector tank.
Note: The heating elements do not have to be entirely free from scale. Then rinse heating elements thoroughly with fresh water. Warning! Ensure that the electrical connections remain dry. Warning! Do not remove scale coating on the heating elements with tools (screwdriver, scraper, etc.
-2 0- 5. Remove locking screws on the front of the Scale T ank support mechanism. Scale tank last replaced on: ON OFF DRAIN 1 2 6 PN: 150-5913 Rev . A 7. Vi sually inspect cylinder , heating elements and o-ring. Clean or replace if necessary . 6. Lower and remove Scale T ank.
REPLACING UNIT FUSES Warning! Before replacing the unit fuse the steam humidifier must be switched off and secured against unintentional re-connection. Take care that the electricity supply to the main contactor is disconnected (check with voltage tester).
20. Connect temperature switch cable. Note: This cable is not polarity sensitive. 21. Double-check all the connections. 22. Turn the unit on. 23. Allow unit to fill.
-2 3- TROUBLE-SHOOTING Most operational malfunctions are not caused by faulty equipment but rather by improper installation or disregard for planning guidelines. Therefore, a complete fault diagnosis always involves a thorough examination of the entire system.
-2 4- Malfunction / Indication Cause Remedy Invalid level Error code: 6A/6B Level unit faulty. Magnetic field in vicinity of level unit. Replace level unit. Eliminate magnetic field. Steam pressure (error only) Error code: 7A/7B Steam hose blocked or restricted (water trap).
-2 5- NHSC / NHDI SERIES CONTROL CIRCUIT TERMINA L B L OCK IMPORT A NT : REA D THESE INSTRUCTIONS CA REFUL L Y B EFORE CONNECTING CONTROL WIRING NOTE: If no On/Off Control is used, then af ield jumper.
Humidifier Mandatory Pre-Start-up Checklist (p.1 of 2) Unit Serial #: ________ # of humidifiers: _____ Tag: _____________ Unit type: NHSC / NHDI Voltage: _____V/___ph Steam output: ____lbs.
-2 7- Humidifier Mandatory Start-up Checklist (p. 2 of 2) Unit Serial #: ________ # of humidifiers: _____ Tag: _____________ Unit type: NHSC / NHDI Voltage: _____V/___ph Steam output: ____lbs.
-2 8- Maintenance Checklist (p.1 of 2) Unit Serial #: ________ # of humidifiers: _____ Tag: _____________ Unit type: NHSC / NHDI Voltage: _____V/___ph Steam output: ____lbs.
-2 9- Maintenance Checklist (p.2 of 2) Note: In all cases, local regulations relating to environmental protection must be implemented. How to reset the maintenance indication: - Switch on the services in the main supply lines. - With the unit switch off, depress and hold the drain switch.
-3 0-.
-3 1- Electrical Exploded View.
-3 2- 39 40 1 2 4 5 6 7 8 15 17 20 10 11 21 22 23 24 9 19 18 25 26 27 28 29 30 32 33 34 35 36 38 37 12 31 2 3 16 13 14.
-3 3- Plumbing Exploded View Capacity 180/3 Voltage 208v 230V 460V 575V 208v 230V 460V 575V 208v 230V 460V 575V 208v 230V 460V 575V 208v 230V 460V 575V 208v 230V 460V 575V 460V 575V 460V 575V 460V 575.
-3 4-.
-3 5-.
LIMITED WARRANTY AxAir Nortec Inc. and/or AxAir Nortec Ltd. (hereinafter collectively referred to as THE COMPANY), warrant for a period of two years from date of shipment, that THE COMPANY’s manufactured and assembled products, not otherwise expressly warranted are free from defects in material and workmanship.
Model # :_________________________ Serial # :_________________________ Cylinder # :_______________________ Cylinder Last Replaced: _________________________ MTH/DAY/YR _________________________ MTH/DAY/YR _________________________ MTH/DAY/YR A WMH COMPANY AxAir Nortec Inc.
An important point after buying a device Nortec NHDI (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Nortec NHDI yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Nortec NHDI - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Nortec NHDI you will learn all the available features of the product, as well as information on its operation. The information that you get Nortec NHDI will certainly help you make a decision on the purchase.
If you already are a holder of Nortec NHDI, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Nortec NHDI.
However, one of the most important roles played by the user manual is to help in solving problems with Nortec NHDI. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Nortec NHDI along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
