Nortec Industries NH Series User's Manual
Contents
1. oh en iuist 9 E ELECTRICAL INSTALLATION 14 F WATER SUPPLY LINE zeeman ee a an a ee ELE 14 G Wd MB cT 18 H AUXILIARY PANNA 18 l STEAW LINES enge EE 18 2 IMPORTANT INFORMATION 19 A GENERAL 12205 WEE ES 19 B HEATER AND FANSYSTEM 19 C FREEZE PROTECTION SYSTEM OPTIONAL 20 D SERVICING ELECTRODE STEAM CYCLINDER 20 E SERVICING NHRS WITH SCALE MANAGEMENT SYSTEM 21 CLEANING DUST AND POLLEN DEPOSITS 21 G RESTARTING AFTER FREEZING inda oo ced RE 21 3 OPERATION AND ADDITIONAL MAINTENANCE 22 A OPERATION conie heus 22 B ADDITIONAL MAINTENANCE 22 4 WEATHER DESIGN DATA 5 au 22 000 000 eneren seiere eee Eb 22 A WEATHER DATA serer er IU S 222. Ge Jacksonville 95 35 85 57 76 Miami 91 33 83 64 76 Georgia 95 35 83 57 68 98 37 83 55 69 95 35 85 61 80 SSC 95 35 64 37 25 Illinois 98 37 83 57 81 70 75 95 35 78 51 55 83 72 77 96 35 81 53 58 Indiana 84 75 81 95 35 84 53 58 72 78 95 35 84 54 60 76 95 35 77 50 56 cO OT OT ig um EGEGEGSESIE 51514216 Sioux City l 1 HERE opeka 10 100 PE Kentucky Louisville Louisiana New Orleans EN 1 Maine NM i EE Massachuseis Boston 18 Ema Grande Rapids 10 m IE AEEA AE HERES Minneapolis Mississippi Vicksburg 12 10 10 Page 23 2008 10 01 z Nortec www humidity com a 1 Butte FETERE 10 Nevada Se En City Jersey Newark See Em al s York 10 5 0 North Carolina Asheville nn 10 North Dakota Bismarck 30 _ Ohio Oklahoma City 0 5 a ee 10 Pennsylvania Harrisburg 0 Philadelphia 0 i 0 5 Rhode Island Providence O South Carolina Charleston 15 Columbia 10 South Dakota Huron Rapid City gn Memphis Texas Amarillo 10 Corpus Christi 20 Dallas 10 10 Lake Cit ass rate Virginia Richmond 78 3 Walla Walla Ben s zzi Parkersburg
3. ATIK TYNOULO 9 02 wasis 50107 pue 06 6 ee 1 00 good CC Tol SEO Fama 82d 8 WA VZ y d x TI 9 www humidity com Nortec ZL 1 USS sal 2 25 153 os 00 0 590 TUTTI 018 7 31 5 072 802 590 10 30 Page 34 2008 10 01 3 Wiring diagram NHRS Outdoor Double Figure Ga 33 J0N rau 532 F ON SICH 08 LIGEL L9LOVSC xoom EL L LL 15 ES Es AOR 8007 11 31 3 PSR 53800 F www humidity com Nortec GLEN 5 6501997 pue BunesH jo3juo02 nose EL el ee z Nortec www humidity com THIS PAGE INTENTIONALLY LEFT BLANK z Nortec www humidity com WARRANTY Walter Meier Inc and or Walter Meier 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 c
4. www humidity com series Outdoor ELECTRODE STEAM HUMIDIFIER Outdoor Model Installation Manual 2531550 B z Nortec www humidity com PROPRIETARY NOTICE This document and the information disclosed herein are proprietary data of Walter Meier Neither this document nor the information contained herein shall be reproduced used or disclosed to others without the written authorization of Walter Meier except to the extent required for installation or maintenance of recipient s equipment All references to the NORTEC name should be taken as referring to Walter Meier Climate USA Inc and Walter Meier Climate Canada Ltd LIABILITY NOTICE Walter Meier does not accept any liability for installations of humidity equipment installed by unqualified personnel or the use of parts components equipment that are not authorized or approved by Walter Meier COPYRIGHT NOTICE Copyright 2008 Walter Meier Climate USA Inc and Walter Meier Climate Canada Ltd rights reserved RECORD OF REVISIONS For each revision put the revised pages in your manual and discard the superseded pages Write the revision number and revision date date put in manual and the incorporator s initials in the applicable columns on the Record of Revisions Revision Page Number Date Put Revision Revision Date Put Number In Manual By Number Date In Manual By 2008 10 01 z Nortec www humidity com TABLE OF CO
5. www humidity com THIS PAGE INTENTIONALLY LEFT BLANK 2008 10 01 Nortec 10 00 INTRODUCTION 10 00 Page 1 z Nortec www humidity com 1 PRE INSTALLATION A ABOUT THIS GUIDE 1 This guide is intended as a supplement for the NH Series Installation Guide The NH Series Installation guide is included with all NH Series humidifiers and contains information on installation operation and maintenance that applies to both indoor and outdoor models This guide contains supplementary information that pertains specifically to the NH Series Outdoor humidifiers 2 For information on the installation of controls interior piping interior wiring distribution systems please refer to the NH Series Installation Guide 3 The operation and control of the NH Outdoor Series is identical to the indoor series Please refer to the NH Series Installation guide for information on operating your humidifier 4 The maintenance items described in this guide are specific to the outdoor model and must be performed IN ADDITION to the regular maintenance that an indoor model would require Please refer to the NH Series Installation guide for other regular maintenance items B RECEIVING amp 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 th
6. 10 20 TECHNICAL 1 SPARE PAR a 28 10 30 WIRING DIAGRAMS ee 31 WARRANTY 2008 10 01 z Nortec www humidity com LIST OF FIGURES Figure 10 00 INTRODUCTION Figure 1 010010 11 he Q RIQ x Figure 2 Distributor Box Contents Figure 3 SAM e Distributor BOX Figure 4 Remote Mounted Blower Pack 10 10 INSTALLATION PROCEDURES Figure 1 Recommended Clearances and Curb Dimensions Figure 2 Typical Air Handling Unit Installation Figure 3 Typical Rooftop Curb Installation Figure 4 Typical Wall Mount Installation Figure 5 Normally Open Normally Closed Valve Arrangement Figure 6 3 Way Valve Arrangement 10 20 TECHNICAL Figure 1 NHRS Outdoor Exploded Figure 2 NHTC Oudoor Exploded View LIST OF TABLES Table 10 10 INSTALLATION PROCEDURES Table 1 Weather Design 2008 10 01 Nortec
7. THE HUMIDIFIER DO NOT SERVICE THE HUMIDIFIER WHILE STANDING ON WET OR ICY SURFACES OR IN WET WEATHER CAUTION IF THE HUMIDIFIER HAS BEEN IN OPERATION INTERNAL COMPONENTS CAN BE HOT ENOUGH TO CAUSE SERIOUS INJURY FULLY DRAIN THE UNIT AND ALLOW SUFFICIENT TIME FOR THE UNIT TO COOL BEFORE PERFORMING ANY SERVICE WORK B HEATER AND FAN SYSTEM 1 The NH Outdoor humidifiers feature an internal heating and cooling system to maintain appropriate operating temperatures and protect the electronics during adverse conditions 2 During the winter months when the temperatures are cooler a 200 W heater and fan system will automatically activate to keep the internals of the case at an appropriate operating temperature This heater is automatically controlled by an internal thermostat and cannot be manually activated 3 During the warm summer months a weather shielded case fan will circulate air throughout the case cooling the electronics and maintaining operating temperatures This fan is automatically controlled by a thermostat and cannot be manually activated 10 10 Page 19 2008 10 01 z Nortec www humidity com WARNING IT IS ESSENTIAL THAT THE FANS AND HEATERS BE INSPECTED PERIODICALLY TO ENSURE THAT THEY CAN SPIN FREELY AND HAVE NOT BECOME CLOGGED WITH DIRT POLLEN OR BY ANIMALS THIS IS ESPECIALLY TRUE OF THE EXTERNAL CASE FAN AND FAN SHROUD WARNING IN COLD CLIMATES THE FREEZE PROTECTION SYSTEMS MUST BE CORRECT
8. 10 01 Nortec www humidity com THIS PAGE INTENTIONALLY LEFT BLANK 10 20 Page 30 2008 10 01 Nortec 10 0 WIRING DIAGRAMS 10 30 Page 31 Nortec www humidity com Circuit for Cylinder A Heating and Cooling ir Proving System Blower Pack 2 Power ii 120 Vac 15 Amps slu Continued Sp on Wiring Diagrams 2522001 Cylinder B 1 mm mm mm 4 mm Tr mE Optional Fault Remote PCBC Display F i x K e ee in k a x e 2 amp dn A 1 AL A A M RUE NN M MN NN w KAM ACA x x xw au K K K K V RA SA Dnb e and 6 electrode 2 3 NOTE NHTC Only NHTC OUTDOOR HUMIDIFIER Cylinder A WIRING DIAGRAM Diagram No 5 REVB August 22 2008 www humidity com Figure 1 Wiring Diagram NHTC Outdoor 10 30 Page 32 2008 10 01 Figure 2 Wiring Diagram NHRS Outdoor Single 2008 10 01 10 30 Page 33 8007 Zz qe 09 0192 ON 0 JSPIWUAH JOOPINO 0607010 INYUDVIA Aer ld J
9. AND PROVIDED PUNCHOUTS FUNNEL WITH 3 WAY VALVE OR AIR GAP NO NC VALVE ARRANGEMENT MANUAL SHUT OFF BY OTHERS Figure 2 Typical Air Handling Unit Installation NH OUTDOOR TYPICAL ROOFTOP CURB INSTALLATION INSULATED STEAM LINE BY OTHERS EA PUNCHOUTS PROVIDED FOR POWER WIRING TO AND FROM BREAKER INSULATED AND HEAT TRACED WATER SUPPLY BY OTHERS CAN ALSO BE ROUTED THROUGH DRAIN LINES PIPE CHASE AND PROVIDED PUNCHOUTS FUNNEL WITH 3 WAY VALVE OR AIR GAP NO NC VALVE ARRANGEMENT MANUAL SHUT OFF BY OTHERS Figure 3 Typical Rooftop Curb Installation 10 10 Page 12 2008 10 01 Nortec www humidity com NH OUTDOOR TYPICAL ROOFTOP WALL MOUNT INSTALLATION STEAM EXITIN GS THROUGH WALL HAN GING BRA 5 DETAIL BRA CET MOUNT SPACING FAST EM Ele SR Ev PIPE CHAS ES HEAT TRACE ALL 18 MIN PIPES DETAIL E WALL MOUNT DIMENSIONS D 5 lbs 18 d zem 10 25 dem 50 100165 T5 40 dom 18 40 Som 15 38 lom 100 200Ibs 16 40 5cm 15 AO dem 18 38 lem Figure 4 Typical Wall Mount Installation 10 10 Page 13 2008 10 01 z Nortec www humidity com E ELECTRICAL INSTALLATION Only qualified personnel should install electrical wiring All wiring must be in accordance with national and local codes Power and control wiring
10. THERMOSTAT KIT NH Place STC 100 thermostat for cooling fan 5 1 1 FREEZE PROTECTION KIT NH OUTDOOR 2535017 COMPLETE AS SHOWN NOT ALL PARTS MAY BE NEEDED CONSULT FACTORY SHOWN EACH MODEL INITIALY SOLD AS OPTION ALL OTHER SPARE PARTS ARE LISTED IN THE MAIN MANUAL FOR THE NHRS PLEASE CONSULT FACTORY Figure 1 NHRS Outdoor Exploded View 2008 10 01 ELECTRONICS SIDE NOTES 120 VAC DIRECTION ARROW ON SIDE TO POINT OUT OF UNIT 120VAC COMES WITH ALL HARDWARE AND MOUNTING BRACKET COMPLETE AS SHOWN NOT ALL PARTS MAY BE NEEDED CONSULT FACTORY _ Place STC 100 thermostat for cooling fan Place STC 60 thermostat for heater on left COMES WITH ALL HOSES AND CLAMPS KIT CONTAINS ALL GASK FOR OUTDOOR PORTION ONLY CONTACT FACTORY SPECIFIC TO EACH MODEL CONTACT FACTORY SPECIFIC TO EACH MODEL INITIALY SOLD AS OPTION z Nortec www humidity com ITEM DESCRIPTION COOLING FAN KIT NH OUTDOOR 2535015 HEATING FAN KIT NH OUTDOOR 2535016 FREEZE PROTECTION KIT NH OUTDOOR OUTDOOR FILL CUP KIT NHTC 005 100 OUTDOOR FILL CUP KIT NHTC 100 200 OUTDOOR 2531065 GASKET KIT NHTC 005 050 OUTDOOR 2535150 GASKET KIT NHTC 100 200 OUTDOOR 2535020 2 3 4 3 5 _ 6 6 WIRE HARNESS SHOWN 7 TRANSFORMER PRIMARY VOLTAGE TO 120VAC ALL OTHER SPARE PARTS ARE LISTED IN THE MAIN MANUAL FOR THE NHTC PLEASE CONSULT FACTORY Figure 2 NHTC Outdoor Exploded View 10 20 Page 29 2008
11. is to be routed into the humidifier through the pipe chase in the base of the unit A field supplied NEMA rated weatherproof disconnect switch must be mounted external to the NH Outdoor unit to allow for power interruption during servicing and or maintenance A mounting plate located on the side of each outdoor model is available for mounting of the disconnect switch Two electrical cutouts are provided for routing the primary wiring from the disconnect switch to the main power terminal strip inside the unit Installation details for primary and low voltage control wiring are the same as for indoor units 1 4 WATER SUPPLY LINE The water supply line is critical to the proper operation of the humidifier Humidifiers primarily operate in the cold winter months when freezing is a serious issue To prevent freezing of the humidifier a water supply line freeze protection system should be ordered and used in conjunction with a normally open normally closed valve arrangement described below NORTEC s limited warranty does NOT cover damage resulting from freezing There are two alternative configurations for the supply line plumbing The first method involves using a normally open normally close valve arrangement see Figure 5 The valves should be installed inside of the building to prevent freezing The water should flow from the supply through a normally closed valve This valve should always be closed unless energized by the humidi
12. 10 23 niii Milwaukee 15 10 10 Page 24 2008 10 01 36 40 73 55 48 71 75 80 66 73 84 79 8 82 87 87 73 76 77 78 77 72 59 Nortec www humidity com Cheyenne Fredericton Moncton Saint John s Sioux Lookout Sudbury Timmins Toronto Windsor Sault Ste Marie Wyoming Alberta British Columbia Newfoundland Ontario PE 6 z a 9 _ 70 71 58 60 47 13 17 31 30 27 55 62 88 86 80 79 75 76 81 40 11 16 39 19 7 Knob Lake Mont Joli Montreal Port Harrison Quebec City Sept lles Quebec 10 10 Page 25 2008 10 01 z Nortec www humidity com 58 58 Table Source ASHRAE 10 10 Page 26 2008 10 01 Nortec 10 0 TECHNICAL 10 20 Page 27 10 20 Page 28 TT WEE GE 1 ELECTRONICS SIDE ITEM DESCRIPTION NOTES l COOLING FAN KIT NH OUTDOOR 2535015 120 VAC DIRECTION ARROW ON SIDE TO POINT OUT OF UNIT HEATING FAN KIT NH OUTDOOR 2535016 20 COMES WITH ALL HARDWARE AND MOUNTING Place STC 60 thermostat for heater on left OUTDOOR FILL CUP KIT NHRS OUTDOOR 2531071 ae ALL HOSES AND GASKET KIT NH OUTDOOR 2535020 KIT CONTAINS ALL GASKETS FOR OUTDOOR PORTION ONLY WIRE HARNESS pem CONTACT FACTORY SPECIFIC TO SHOWN EACH MODEL NOT TRANSFORMER PRIMARY VOLTAGE TO 120VAC mmm CONTACT FACTORY SPECIFIC TO 2 3 FAN AND HEATER
13. ERS EXPLODED VIEW SECONDARY FILL LINE ONLY FOR NHRS 1 2 NPT BY OTHERS KNOCKOUT FOR OPTIONAL WATER INLET KNOCKOUT FOR POWER LINE AND HOLES FOR CONTROL WIRING POWER KNOCKOUTS TO AND FROM BREAKER Weight Ibs 0 50 Ibs 99 105 45 kg 50 100lbs 137 Ibs 62 kg ROOF CURB BY OTHERS 0 50Ibs 15 38 1cm Min 50 100lbs 15 38 1cm Min 5 12 7cm F 5 12 7 100 200lbs 41 1 104 4cm 18 1 46 0cm 15 38 1cm Min 4 10 16cm 3 3 4 MAX 9 5cm Minimum Required Clearance Back Curb Mount 0 5065 24 60 96cm 0 20 50 80 6 15 25 50 100lbs 24 60 96cm 0 20 50 80 6 15 25 100 200lbs 38 96 52cm 0 20 50 80 6 15 25 Major Dimensions NHRS humidifiers under 50lbs hour require a medium Outdoor Enclosure z Nortec www humidity com T ROOF PIPE CHASES NH Outdoor Enclosure Physical Data Sheet Small Medium Large models May 21 2008 Figure 1 Recommended Clearances and Curb Dimensions 10 10 Page 11 2008 10 01 z Nortec www humidity com NH OUTDOOR TYPICAL AIR HANDLING UNIT INSTALLATION STEAM LINE TO DISTRIBUTOR AIR HANDLING UNIT SEE FIGURE 8 FOR MOUNTING DETAIL PUNCHOUTS PROVIDED FOR POWER WIRING TO AND FROM BREAKER INSULATED AND HEAT TRACED WATER SUPPLY BY OTHERS CAN ALSO BE ROUTED THROUGH DRAIN LINES PIPE CHASE
14. LY INSTALLED AND FULLY FUNCTIONAL AT ALL TIMES HUMIDIFIER WARRANTY DOES NOT COVER DAMAGE RESULTING FROM FREEZING OF THE HUMIDIFIER SUPPLY LINES DRAIN LINES OR STEAM DISTRIBUTION SYSTEM C FREEZE PROTECTION SYSTEM STANDARD 1 Freeze protection is Standard for NH Outdoor units This system prevents internal water freeze up which may damage the humidifier 2 The system consists of an additional normally closed mechanical drain valve This valve is activated by a bi metallic strip thermostat which allows for it to operate in the event of a power failure When the thermostat detects that the water inside the humidifier has cooled to 43 F 6 C the valve opens allowing water to drain The freeze protection system drains water from steam cylinders reservoirs hoses and internal lines Emptying the humidifier protects the hoses fittings valves cylinders and fill cups from ice damage and prevents unit freeze up WARNING ENSURE THAT THE FREEZE PROTECTION SYSTEM DRAIN HOSE IS FREE OF KINKS OR BLOCKAGES THAT MAY PREVENT IT FROM OPERATING WARNING IN COLD CLIMATES THE FREEZE PROTECTION SYSTEMS MUST BE CORRECTLY INSTALLED AND FULLY FUNCTIONAL AT ALL TIMES HUMIDIFIER WARRANTY DOES NOT COVER DAMAGE RESULTING FROM FREEZING OF THE HUMIDIFIER D SERVICING ELECTRODE STEAM CYLINDER 1 The cylinders inside of the NH electrode stream models have a finite life and must be replaced periodically The life span of the cylinder varies
15. MPANY makes no warranty and assumes no liability whatsoever for consequential damage or damage resulting directly from misapplication incorrect sizing or lack of proper maintenance of the equipment THE COMPANY makes no warranty and assumes no liability whatsoever for damage resulting from freezing of the humidifier supply lines drain lines or steam distribution systems THE COMPANY makes no warranty and assumes no liability whatsoever for equipment that has failed due to ambient conditions when installed in locations having climates below 14 F 10 C during January or above 1047 40 C during July See Table 1 Weather Design Data above THE COMPANY retains the right to change the design specification and performance criteria of its products without notice or obligation A Nortec www humidity com INSTALLATION DATE MM DD YY Y Y MODEL SERIAL CYLINDER Cylinder Replacement Date MM DD Y Y Y Y ISO 9001 2000 walter US LISTED Certificate No 002419 U S A CANADA Authorized Agent Walter Meier Climate USA Inc Walter Meier Climate Canada Ltd 826 Proctor Avenue 2740 Fenton Road Ogdensburg NY 13669 Ottawa ON K1T 3T7 TEL 1 866 NORTEC 1 TEL 1 866 NORTEC 1 EMAIL northamerica climate waltermeier com FAX 613 822 7964 WEBSITE www humidity com
16. NTENTS Subject Page 10 00 INTRODUCTION 1 PREINST UNION EAS a TE 2 A ABOUT THIS GUIDE 545 2536 etim BE ael datie 2 B RECEIVING AND UNPACKING 2 2 qued clc 2 A GENER 2 B HUMIDIFIER SKID 2112 eR ame nn HRE m E EG 2 C DE FRIBUTOR BON epa ie Eoi p 2 D AGEESSORIES DON Su 3 9 PREINSTALLATION EQUIPMENT VERIFICATION 5 A EQUIPMENT VERIFICATION 62226 5 B MOVING AND HANDLING THE HUMIDIFIER 5 10 10 INSTALLATION PROCEDURES 1 HUMIDIFIER INSTALLATION wee 8 A LOCATION amp MOUNTING 8 B AIR HANDLING MOUNTING 8 C CURB MOUNTING s res usus doesn Lx Ses ee 9 D WALL MOUNTING 02 ere dieren
17. Please refer to the NH Series Installation guide for more details B ADDITIONAL MAINTENANCE 1 In addition to the maintenance items listed in this guide the NH Series Installation Guide lists other maintenance items that apply the entire NH Series indoor and outdoor Refer to the NH Series Installation Guide for further details and procedures 4 WEATHER DESIGN DATA A WEATHER DATA The following weather design data is provided to assist in determining suitable locations for rooftop mounting of the NH Series Outdoor models Climates that see very cold winter conditions are not good candidates for rooftop NH units It is NOT recommended to install the humidifier in areas that reach below 14 10 C during January or above 1227 50 C during July see table below These harsh climates can cause required maintenance to be difficult to perform and increase the risk of the humidifier freezing or overheating 10 10 Page 22 2008 10 01 1 Nortec www humidity com Table 1 Weather Design Data JANUARY JANUARY JULY JULY Temperature Relative Humidity RH Temperature Relative Humidity RH Alabama TT 10 12 Mobile 10 12 5 BEER Little Rock EE California 1 u 4 35 2 Sacramento 30 1 San Diego 35 2 San Francisco 35 2 Colorado Denver 10 Grand Junction 15 69 o 78 es _ Delaware 0 48 06 70 95 35 80 52 69
18. based on incoming water conditions The unit will indicate that it is time to change the cylinder by way of a message displayed on the screen The humidifier should be frequently monitored ensure that the cylinder is changed when required to eliminate downtime An optional Remote Fault Indication Package P N 2522170 is 10 10 Page 20 2008 10 01 Nortec www humidity com available to signal remotely that he humidifier requires service If the NORTEC OnLine option was ordered cylinder change notices will be delivered via email Please refer to the NH Series Indoor Installation guide for further details on replacing cylinders 2 E SERVICING NHRS WITH SCALE MANAGEMENT SYSTEM As with the indoor units the scale collector tanks on the NHRS must be emptied periodically based on supply water conditions At a minimum NORTEC recommends the tanks be emptied twice every year season Also every third time the tanks are cleaned the cylinder and heating elements should be disassembled and cleaned as well This will ensure long and reliable operation of your NORTEC humidifier The procedure for changing the cylinder is similar to that of the indoor units with two minor differences a The guide drain control is located on the back of the scale collector tank as opposed to the side b When the tank has finished draining the hose clamps that secure the freeze protection drain hoses to the tank need to be loosened and the hoses r
19. cal wall on an air handler unit This installation is advantageous since the steam piping is shorter and hence the condensate losses and backpressure are minimized Typical air handler installations are shown in Figure 2 Additionally observe the following precautions when installing the humidifier Ensure that the surface selected to mount the humidifier is structurally sound and capable of supporting the entire weight of the humidifier when in operation b For minimum required maintenance clearances see Figure 1 c Wall mounting bracket provided should be securely attached horizontally with open edge upwards using field supplied fasteners d Using proper lifting techniques lift the humidifier onto the brackets to mount it Several people may be required to lift the unit e Ensure that both the bracket and humidifier are mounted level f Do not store or use gasoline or other flammable vapors and liquids in the vicinity of the humidifier 10 10 Page 8 2008 10 01 Nortec www humidity com C CURB MOUNTING The integral base of the NH Outdoor models is designed to mount on a curb The curb must be built to structurally support the entire weight of the humidifier when in operation Required curb dimensions are given in Figure 1 Typical curb mounting installations are shown in Figure 3 Additionally observe the following precautions when installing the humidifier a The NH Outdoor unit is shipped on a skid
20. ec INSTALLATION INSTRUCTION WIRING DIAGRAM gt DIAGRAM NUMBER REV 0 www humidity com DATE OCT 16 07 Figure 6 3 Way Valve Arrangement 10 10 Page 17 2008 10 01 z Nortec www humidity com G DRAIN LINE NH Series Outdoor units require and external drain line to provide for draining from the unit ALL OUTDOOR PIPING SHOULD BE PROPERLY INSULATED AND HEAT TRACED TO PREVENT FREEZING Route the drain hose to a drain funnel inside the building to provide an air gap before entering the main building drain sewage system Some units have a drain pump Refer to the NH Indoor Installation Guide for flow rates and pressures Drain line should be capable of withstanding 2007 93 C temperatures Internal drain water tempering will ensure a maximum of 140 F 60 C during normal operation Optional low temperature drain water cooler is available to cool drain water to 120 F 49 C AUXILIARY DRAINS Auxiliary draining is part of the freeze protection system that is discussed in section 2C of this chapter A second hose 5 8 in diameter extends from the bottom of the unit This is the auxiliary drain hose This hose must be drained into an open funnel It can share a funnel with the primary drain line if necessary ENSURE ALL AUXILIARY DRAIN HOSE IS PROPERLY HEAT TRACED AND INSULATED TO PROTECT FROM FREEZING Auxiliary drain water temperature will be 50 F 10 C Additionally the NHSC has an additional port
21. emoved With the hoses disconnected the scale collector tank can be removed and emptied Ensure that the hoses are reconnected and secure before restarting the humidifier c For further details please refer to the Installation Guide 1 F CLEANING DUST AND POLLEN DEPOSITS Dust pollen and animal nests must be periodically removed from the humidifier This is best accomplished with a vacuum or with compressed air When cleaning the humidifier focus on the following areas a Exhaust and heater fans Heater coil Case louvers Heat sinks if applicable Electronics f Case floor 1 G RESTARTING AFTER FREEZING In the unlikely event that the humidifier must be restarted after freezing the following procedure should be followed a Inspect all hoses fittings valves and seals for cracking or damage Since water expands when it freezes connections may have come loose or fittings may have cracked If any parts are damaged contact your NORTEC representative for replacement parts b Power the humidifier on The heater and fan circuit will automatically power on and begin to warm the case 1 10 10 Page 21 2008 10 01 z Nortec www humidity com c Once the unit has reached an appropriate temperature it will resume normal operation 3 OPERATION AND ADDITIONAL MAINTENANCE A OPERATION 1 NH Outdoor series humidifiers are operated in the same manner as their indoor counterparts
22. f heat loss through steam line 1 D WALL MOUNTING A third option for installation involves mounting the humidifier on an exterior wall or other vertical surface This method requires holes to be drilled into the wall to accommodate the steam lines which exit from the rear of the humidifier Typical wall mounting installations are shown in Figure 4 If this method is selected utilize the provided brackets in a similar manner as if the installation was on an air handler Additionally observe the following precautions Ensure that the surface selected to mount the humidifier is structurally sound and capable of supporting the entire weight of the humidifier when in operation b For minimum required maintenance clearances see Figure 4 1 10 10 Page 9 2008 10 01 z Nortec www humidity com Wall mounting bracket provided should be securely attached horizontally with open edge upwards using 5 16 x 3 minimum flat head screws See Figure 4 Using proper lifting techniques lift the humidifier onto the brackets to mount it Several people may be required to lift the unit Ensure that both the bracket and humidifier are mounted level Do not store or use gasoline or other flammable vapors and liquids in the vicinity of the humidifier 10 10 Page 10 2008 10 01 Nortec www humidity com FRONT VIEW BACK VIEW STEAM LINE CONNECTION 1 750inch OD FILL WATER LINE SINGLE OR DOUBLE 1 2 NPT BY OTH
23. fier This prevents water from flowing to the humidifier when there is no demand or in the event of a power failure After the first valve the water should flow to a tee The central branch of the tee is to be plumbed to the humidifier The remaining branch of the tee should is to be connected to a normally open valve This valve remains open to allow water to drain back from the outdoor lines when there is no demand from the humidifier or in the event of a power failure When energized by the humidifier this valve will close and allow water to flow to the humidifier With this configuration the outdoor line will be empty unless the humidifier requests water This effectively eliminates the chance of water freezing in the outdoor portion of the line The second method operates on the same principle as the first however it replaces the two valve configuration with a single safety three way water valve This valve is to be installed inside of the building When the humidifier begins to operate it will energize this valve and send water to the humidifier When the humidifier is not in use the valve will close the supply and allow water in the outdoor lines to flow to drain See Figure 6 for details The valves described above should operate on either a 24V or 110V signal and should be wired to the appropriate terminals inside of the humidifier 10 10 Page 14 2008 10 01 1 F z Nortec www humidity com Additionally the following poi
24. imates 2 The NH Outdoor Series humidifiers can be mounted on an air handler on appropriately sized curb or on a wall or vertical surface The clearance dimensions shown in this guide are for reference only and are the minimum required for maintenance of the humidifier Local and National Codes should be consulted prior to final location and installation of the humidifier NORTEC cannot accept responsibility for installation code violations The minimum required maintenance clearances are shown in Figure 1 3 Humidifiers typically operate in the cold winter months As a result they should be located where it is safe and convenient for maintenance personnel to service the unit This is essential as it may be less desirable to service the unit during inclement weather The warranty does NOT cover damage resulting to humidifier as a result of neglect or freezing NH Outdoor series should NOT be installed on a rooftop in severe climates or where temperatures reach below 14 F 10 Please refer to Table 1 Weather Design Data in this document 4 Itis also important to consider the length and location of the humidifier steam line that will result from the installation Consult section 10 10 in the NH Series Indoor Installation guide for further information on steam lines B AIR HANDLER MOUNTING 1 NH outdoor series features provisions for hanging on brackets supplied This allows the unit to be mounted directly to a verti
25. is period 3 Inspect shipping boxes for damage and note damages on shipping waybill accordingly 4 After unpacking inspect equipment for damage and if damage is found notify the shipper promptly 5 NORTEC products are shipped on FOB factory basis Any and all damage breakage or loss claims are to be made directly to the shipping company 2 PACKAGING A GENERAL 1 The equipment packaging is standardized in that each box in the shipment will always have the same contents The following paragraphs identify the contents of each box B HUMIDIFIER SKID 1 Typically the NH Series Outdoor Humidifier ships on a skid shown in Figure 1 Controls and accessories are shipped separately in a box The contents of the box will be listed on the outside of the box C DISTRIBUTOR BOX 1 Depending on the equipment ordered any of the following distributor box configurations may be received 10 00 Page 2 2008 10 01 z Nortec www humidity com For equipment received if an ASD BSD CSD distributor s is ordered refer to Figure 2 b For equipment received if a SAM e distributor is ordered refer to Figure 3 For equipment received if a RMBP is ordered refer to Figure 4 D ACCESSORIES BOX 1 Additional accessories such as drain water coolers and filters are shipped in a separate box Smaller accessories that would fit in the humidifier box are put in the humidifier box and the box is identified as containing
26. nts should be considered Each unit is supplied with a 72 NPT male connection to the fill valve Refer to the NH series indoor installation guide for allowable pressures and fill rates ALL OUTDOOR LINES MUST BE PROPERLY HEAT TRACED AND INSULATED TO PREVENT FREEZING 15 recommended to install and additional guide shut off valve within the building to allow isolation of the water to the unit for easy servicing The guide shut off valve must be accessible to service personnel a b 5 10 10 15 2008 10 01 z Nortec www humidity com WIRING DIAGRAM OUTDOOR WATER SUPPLY FREEZE PROTECTION 24VAC Supplied by Others Bi Metallic Disc Normally Closed Valve Set to 35 F 1 2 NPT connections Heat trace 37 41 F 3 5 C Minimum To Unit To Drain Normally Open Valve 1 2 NPT connections 120VAC Supplied by Others Wiring Diagram fill water freeze protection y Nor tec INSTALLATION INSTRUCTION WIRING DIAGRAM DIAGRAM NUMBER REV 0 www humidity com DATE NOV 28 06 Figure 5 Normally Open Normally Closed Valve Arrangement 10 10 Page 16 2008 10 01 z Nortec www humidity com NH OUTDOOR WATER SUPPLY FREEZE PROTECTION 3 way valve 24VAC Supplied by Others Bi Metallic Disc Set to 35 F Normally Closed Valve Heat trace 1 2 NPT connections 37 419 3 5 C Minimum To Unit 120VAC Supplied by Others Wiring Diagram fill water freeze protection p Nort
27. such 10 00 Page 3 2008 10 01 Nortec www humidity com DISTRIBUTOR BAG WITH SHORT STEAM AND CONDENSATE HOSE SECTION CLAMPS TEMPLATE FOR CUTTING DUCT AND INSTRUCTIONS Figure 2 Distributor Box Contents BLOWER PACK BAG WITH SHORT STEAM AND CONDENSATE HOSE SECTION CLAMPS AND INSTRUCTIONS Figure 4 Blower Pack Box Contents 10 00 Page 4 2008 10 01 Figure 1 Humidifier NOTE CONTENTS MAY BE IN MULTIPLE BOXES SHORT ABSORPTION MANIFOLD HEADER BAG WITH STEAM HOSE CLAMP BOLTS NUTS WASHERS AND MANUAL TOP BRACKET WILL ALSO BE INCLUDED IN THE SHIPMENT MOUNTING FRAME WILL BE SHIPPED IF ORDERED Figure 3 SAM e Distributor Box z Nortec www humidity com 3 PRE INSTALLATION A EQUIPMENT VERIFICATION Ensure that available voltage and phase corresponds with humidifier voltage and phase as indicated on humidifier s specification label Ensure that the dedicated external fuse disconnect is of sufficient size to handle the rated amps as indicated on the specification label Refer to local codes Report any discrepancy immediately to the site engineer Location and mounting is described in Chapter 10 10 Typical installation is described in Chapter 10 10 1 2 3 4 S B MOVING AND HANDLING THE HUMIDIFIER The NH Outdoor Series humidifier is bolted to a shipping skid for easy transportation While still attached the skid the humidifier can be lifted to a roof
28. to allow for guide draining of the scale tank It is recommended that this drain port be plumbed to a funnel in the same manner as the other drains This drain can share a funnel with the other primary and auxiliary drains if desired STEAM LINES The steam outlet connection is located at the back of the NH Outdoor unit Steam hose s and clamps are supplied with the unit and are intended to provide a flexible coupling outside of the unit to the building steam lines NH Outdoor models can develop steam pressures up to 12 w c to overcome duct and steam line pressures Duct and line pressures about 12 w c will cause steam to exit through the drain line oteam lines can be routed to an air handler on a roof or pipe chased external to the unit through an exterior wall or roof to enter the building All steam lines must be insulated to reduce losses For steam line installation guidelines consult the distribution system installation 10 10 Page 18 2008 10 01 1 1 1 2 H z Nortec www humidity com guide Steam Distributor Installation Guide Form 231 and SAM e Short Absorption Manifold Form 249 2 IMPORTANT INFORMATION A GENERAL CAUTION YOUR HUMIDIFIER OPERATES ON HIGH VOLTAGE AND CURRENTS WHICH CAN CAUSE SERIOUS INJURY OR DEATH ENSURE THAT THE POWER TO THE UNIT IS OFF BEFORE PERFORMING ANY SERVICE WORK ON THE HUMIDIFIER ONLY QUALIFIED PERSONNEL SHOULD PERFORM MAINTENANCE OR REPAIRS ON
29. to allow for lifting by a forklift When lifting by this method ensure that the forks extend across the entire skid to prevent tipping or damage to the unit b Ensure that the humidifier is mounted level c The pan in the bottom of all outdoor models has a pipe chase for routing of services into the humidifier from below d Ifthe humidifier will be roof mounted it is not necessary to make the hole in the roof the same size as the curb the curb drawing shows the size and location of the pipe chase required The pipe chase should be sealed when installation is complete to ensure positive or negative pressure from the building e When mounting the unit in cold climates ensure the lowest point of the air louvers is 12 above any surface when snow or ice could accumulate Hemove excessive ice and snow as necessary X Final installation of the humidifier is accomplished by manually lifting the unit into position on the curb Ensure that proper lifting techniques are used Several people may be required to lift the unit 9 The base of the humidifier is predrilled to allow the unit to the screwed to a curb Ensure that the unit is securely fastened to the curb in this manner h Do not store or use gasoline or other flammable vapors and liquids in the vicinity of the humidifier i If possible DO NOT locate humidifier any further than absolutely necessary from steam distributor location as net output will be reduced as a result o
30. top or other location using a forklift or crane The unit can also be positioned for wall mounting using a forklift as long as the skid is attached although it may be easier to manually lift the unit onto its wall brackets Installation on a curb requires guide lifting of the unit Observe the following precautions when moving and positioning the humidifier a When lifting by crane ensure that the unit is protected from physical damage by the tethers and lifting equipment b When lifting by forklift ensure that unit is properly balanced and secured to prevent tipping c Use proper lifting techniques when manually lifting Often several people will be required to lift the unit e Remove the cabinet doors before manually lifting the unit Ensure that the humidifier is the proper model capacity and voltage for the specific location 1 10 00 Page 5 2003 10 01 Nortec www humidity com THIS PAGE ITENTIONALLY LEFT BLANK 10 00 Page 6 2008 10 01 Nortec 10 0 INSTALLATION PROCEDURES 10 10 Page 7 z Nortec www humidity com 1 HUMIDIFIER INSTALLATION A LOCATION AND MOUNTING 1 NH Outdoor Series humidifiers are UL listed for outdoor installation and come complete with internal cooling for the electronics An internal heater is standard and ensures the enclosure remains at proper operating temperatures Additionally a freeze protection system is available for use in cold cl
31. ylinder 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 e factory providing the defective part s is returned freight prepaid by the customer Parts used for repairs are warranted for the balance of the term of the warranty on the original humidifier or 90 days whichever is longer The warranties set forth herein are in lieu of all other warranties expressed or implied by law No liability whatsoever shall be attached to THE COMPANY until said products have been paid for in full and then said liability shall be limited to the original purchase price for the product Any further warranty must be in writing signed by an officer of THE COMPANY THE 5 limited warranty on accessories not of the companies manufacture such as controls humidistats pumps etc is limited to the warranty of the original equipment manufacturer from date of original shipment of humidifier 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 CO
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