Nortec NHSC User's Manual
Contents
1. NHSC uses Nortec steam hose 1 75 O D Or Med L Copper Insulated NHDI uses Nortec steam hose 1 75 O D or stainles steel pipe Do not exceed 10 ft when using steam hose Steam Line Connection Trap depth 2 greater than duct LY static pressure Condensate return to floor drain sump Scale pump or back tothe Collector humidifier Tan NHS Drain Line m LCD Keypad Ke with LED Status lt Low Voltage Controls Wiring 4 Vac 1 75 O D Water tt Primary Wiring Copper Funnel Drain by others Supply 3 8 NHSC using a Short Absorption Manifold SAM e in Duct AHU Figure 10 Typical Duct Application using Standard Distributor must be 2 greater than duct static pressure Condensate trap A Scale Collector Tank NHSC Drain Li NHSC uses Nortec steam hose 1 75 O D Or Med L Copper Insulated NHDI uses Nortec steam hose 1 75 O D or stainles steel pipe Do not exceed 10 ft when using steam hose 1 75 Q D Water Supply 3 8 NOTE NHDI does not have the scale management system PLUMBING2. lion ppm lion ppm Note Should you have water conditions above the stated parameters consult the factory for a new blowdown setting to help improve your scale management Chlorides High levels of chlorides will attack stainless steel The solution would be to add an in line carbon filter that will remove up to 99 of the chlorides Consult the factory for additional information if your water contains high levels of chlorides Nortec recommends performing a semi annual water analysis to ensure optimal performance Stand by Heating stand by heating off Stand by heating activated on deactivated off Note If stand by heating is active the water temperature in the steam cylinder is constantly kept at approximately 70 C 158 F by the control board Capacity Limitation power limit 100 The set capacity limitation as a percentage of the maximum capacity Press both arrow keys at the same time and a code will appear Enter 8808 using the arrow keys on the keypad and scroll down to the 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 inlet valve cor 130 Set inlet valve correction cycle ratio in of standard setting value to balance out water pressure variations Figure 19 NHSC NHDI Control Interval Value Settings
3. 3 OPERATIONAL CHECK Switch on the humidification by raising the humidity set point on the humidistat controller Switch off the humidification by lowering the humidity set point on the humidistat controller Check for correct functioning of the external monitoring safeties such as air proving and high limit When check complete Set the desired humidity level Remarks ra z Nortec NHSC NHDI Electric Steam Humidifier www humidity com Maintenan hecklist p 1 of 2 Unit Serial ofhumidifiers Tag Unit type NHSC NHDI Voltage MI ph Steam output _ Ibs hr Customer Job Address Maintenance by Date of maintenance II Type of maintenance Periodic maintenance once per week Inspect water and steam installation lines for leaks Inspect drain lines for clogging Inspect electrical installation for loose cables and damaged components Inspect the humidifier for damage Minor servicing when the yellow LED flashes and display indicates minor maintenance due Carry out periodic inspection items Empty the steam cylinder and clean the mineral collector Major servicing when the yellow LED flashes and display indicates major maintenance due Carry out periodic inspection items Empty the steam cylinder and clean the mineral collector Dismantle and clean the steam cylinder Clean the unit inner chamber Inspect the inside components for damage Note Time interval between minor and major
4. No Signal Selected On Off 24 V see note 0 5 VDC 0 10 VDC 0 1 VDC 1 5 VDC 2 10 VDC Control Signal S3 Note To field change the control signal acceptance to On off controls user must do the following 1 At JP2 bottom of main board move the pin to 24 volts 2 Move S3 rotary switch to position 1 3 Place a jumper wire on the low voltage terminal strip between 28 amp 30 16 Soft Start Soft Start Off Soft Start activated on consult factory Deactivated off factory set Demineral Mode Demineral Mode Off Demineral mode activated on consult factory Deactivated off factory set Serial Interface Serial Interface Off Serial Interface activated on consult factory Deactivated off factory set Full Drain Cycle Full Drain Cycle activated on consult factory Deactivated off factory set Flush Cycle Flush Cycle Off Flush Cycle activated on consult factory Deactivated off factory set Control Signal analog signal 0 5v poti Range of the active analog signal in V or mA respectively Note The range of the analog signal may be adjusted using the rotary switch S3 on the control board Software Version software version VX XX Current software version for the steam humidifier Unit Type machine type xxlb xxxV Warning In order to eliminate faults the steam humidifier must be switched off and secured against unintentional re conn
5. O D Stainless Steel Pipe for the NHDI model by others NOTE Steam hose should not reach bottom of the funnel Figure 13 Drain Pump by others if necessary YA Humidifier Recommended Model Gould L Drain Line Model SSH Consult Factory TEAM 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 HXX 2TT ELECTRICAL PRIMARY VOLTAGE SUPPLY WIRING T HUMIDIFIER 1 Check and ensure that available voltage and phase corresponds with operating voltage and phase of humidifier as indicated on the humidifier spec label see Figure 1 Ensure that an adequate power supply is available to carry full humidifier amperage drawn as specified by rated amps on the humidifier spec label reference to local codes A dedicated external disconnect must be installed Do not exceed the maximum circuit protection amps as indicated on the nameplate label Connect ground wire to cabinet ground clamp Do not use neutral wire of four wire supply as ground Single phase humidifiers may be run on three phase power but load may unbalance power grid External wiring sizes must be in accordance with NEC and or CEC and existing local electrical codes and by laws PRIMARY VOLTAGE SUPPLY WIRING FROM HUMIDIFIER S TO BLOWER PACKS 1 All b
6. 1502695 Hose20mmOD ORDER 16 1502694 otamp 20 mon ree afe 1 5 1502042 StraptangeTak 19 1502640 Tanktane 20 1502648 POB water Levei Sensor E E Nortec PN 1502644 1506286 1455000 1505905 1502638 1505914 1505915 1508023 1502588 1528860 1325036 1859104 el el vi el el vi el el el el ri TEE own 502605 Shown 502779 Shown 507847 Not S No Not Sh ege 1605918 PPN ege 1639010 om 1506288 Not Shown S No 32 1508022 GesketforSteamOutet 17 Se aa ENEE ss Pro Jar mae ER as 1325009 Glamp Hose For Large Steam Hose 2 2 2 2 2 jasa RE Lt meme ee meme uem El rl A A O EE imr Hv n AA 33 a CONNECTOR CURRENT d m DETECTION Wees Sam dri WATER LEVEL BOARD HIGH LEVEL MID LEVEL OPTIONAL REMOTE STATUS PCB K1 Steam K2 Error BLOWER PACK L AAA TERMINAL BLOC i I OPTIONAL AUXLIARY S e Ale R Rm e ANE E COOUNG KIT 14 2 B ACC La TERMINAL r G HB BLOCK mm mm mm mm mm mm mm mm mm mm mm mm mm mm Wiring Diagram m or ec NHDI NHSC 010 090 B HUMIDIFIER No 1508103 Rev A Nov 21 2003 www humidity com dc wa LLIO2 A1IDILInU AAWWVA UO LC AON V APH cOL80SL ON aJIJIGINNH 8 081 SEL OSHN IGHN Si JO ueJ6eip BulJIAA J J N C amp lt lt lt lt lt s s Lo s
7. 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 140 F 60 C WATER SUPPLY LINE NHSC 1 The humidifier is intended to operate on potable water 2 Standard fill valves are sized for water pressure ranging from 30 to 80 psig For other pressures consult factory This pressure should be measured at the humidifier if the water pressure is suspect 3 ALWAYS supply and install a shut off valve in the fill water supply line dedicated to the humidifier to facilitate servicing Use 2 OD copper to within 4 feet of the humidifier Reduce to 3 8 OD and connect to the factory supplied 3 8 olive compression fitting under the humidifier 4 Same installation as 3 but add Drain Water Cooler instead of fill WATER SUPPLY LINE NHDI 1 Humidifier is intended to operate on Reverse Osmosis RO water or De ionized DI water with a water conductivity of less than 20 Microsiemens 2 Standard fill valves are sized for water pressure ranging from 30 to 80 psig For other pressures consult factory This pressure should be measured at the humidifier if the water pressure is suspect 3 ALWAYS supply and install a shut off valve in the fill water supply line dedicated to the humidifier to facilitate servicing Use 2 OD plastic or stainless steel to within 4 feet of the humidifier Reduce plastic
8. NHSC NHDI lt Nor tec Resistive Element www Steam Humidifiers Installation Operation Maintenance and Troubleshooting Guide F NHSC NHDI IMPORTANT Read and save these instructions This guide to be left with equipment owner Form 04 197 1 1505921 Table Of Contents INSTALLATION 1 RECEIVING A UNPACKING EQUIPMENT 1 PRE INSTALLATION CHECKPOINT 1 BASIC HUMIDIFIERCONFIGURATION 1 LOCATION amp MOUNTING ee 2 HUMIDIFIERS X102 1200100207200 92310012190 110 1 01MM 2 BLOWER PACKS Mo de d Me do A die S CX de QU CES SA Q Q VAR E l X IE CES 739 DEO ES UE A CE al VW 3 STEAM DISTRIBUTORS AND SHORT ABSORPTION MANIFOLD sss n n n n n 3 PLUMBING un 6 WATER SUPPLY LINE e e RR wg e bw e SA ep NS e EI am Gw Q a ee e 6 DRAIN LINE oom dy d de Q em dik e a c o a we XS m Ni EO Re E A E E A 6 STEAM LINE AND CONDENSATE RETURN UNE 7 ELECTRICAL ll L L L L esl 7 PRIMARY VOLTAGE SUPPLY WIRING TO HUMIDIFIER sss n nn 7 PRIMARY VOLTAGE SUPPLY WIRING FROM HUMIDIFIER S TO BLOWER PACKS 7 LOW VOLTAGE CONTROL WIRING E te S KWE SED DES HE dE ARS VAR XC RETRO og URBI A ES EO a Q sg 9 CONTROL INSTALLATION cw AM 32 us S K S TAP Oe EN f e 9S OX f l y LES DAC OR LEO c c Q D Oe G Re A x Q S wU Q l W D 9 OPTIONAL MODULATION CONTINUOUS C
9. 6 A field supplied funnel see Figure 8 is recommended It will prevent backup in the drain pan and in the cylinder due to partially blocked or badly installed drain lines This prevents rusting of the drain pan The drain line should not end in a sink used frequently by personnel or where plumbing codes prohibit it If the Drain Water Cooler is used with potable water then copper may be used Route to a floor drain or equivalent for safety reasons since drain water from humidifier can be very hot Verify with local codes on DI and RO water Drains should be verified for their suitability for RO or DI water and local codes should be checked Keep drain lines as short as possible Keep drain lines sloped down not level and not up since low spots in drain lines will accumulate sediment and cause backup The drain line should be 2 0 O D S S pipe or larger Do not use plastic pipe for drain lines Consult factory Supply Water Connection 3 8 113 Drain Water Cooler Connection 3 8 Drain Connection 1 5 OD Figure 11 Drain Line Connection Power Inlet Controls Inlet Optional Cooling Kit for SSR consult 135 180 Left 135 180 Right Figure 12 Drain Connection O Y Clampand1 5 IDHose q Factory Supplied Install a Copper Funnel forthe NHSC model 4 and a Stainless Steel Funnel forthe NHDI model by others Install a 2 O D Copper Pipe forthe NHSC model and 2
10. CONTROLS Installed High limit Air proving Mod controller Other POWER OOUU UO 3 8 connection at fill Slopped to drain 9 Size no O Location Wiring Setting Voltage amperage rating and fuse corresponds to Spec Label O Disconnect switch located close to humidifier O Field contact Signature Nortec NHSC NHDI Electric Steam Humidifier www humidity com Humidifier Mandatory Start up Checklist p 2 of 2 Unit Serial ofhumidifiers Tag Unit type NHSC NHDI Voltage MI ph Steam output bs hr Customer Job Address Start up by Date of start up 1 PRELIMINARY Pre start up checklist completed yes J no O If no return to Pre Start up Checklist before going on with start up procedure 2 START UP PROCEDURE The prerequisites for getting power and water into the steam cylinder are as follows check that main breaker is on and power is at the unit check that main water shut off valve is open on off drain switch must be switched on control circuit 8 10 must be made modulation humidistat if present must be calling door interlock switch must be made interlock switch can be pulled out to operate unit The unit will undergo a System Test to ensure integrity of all the components If the test is successful the unit will fill and the float test will be carried out If everything ok the green light will come on and the display will show NHDI or NHSC Ready
11. ERI E SEES E EE DAI SES E ES ES E S E n s ES CTRA RARAS RACER AECA RADA ES AEREA E E E BEER EER ES ES ES ERE EE ES ES S E SERES EUN s i U phi s ET E EE EE E ER ES E E e Ae EE ERES RE E ER ES s RES EUN E RE E ES ES E E ES E E DRE ES EESTI E E Ea a s E ENEE EE E EE EE NEN EN EEEEZE EEG NENNEN EE EE E EE EE E EE EE ES EE REES EE EK AS EE ES ES EZ EZ Ra ES EI ANT RES ES E E EE E E EDS EE EZ ES KREE EE LER E E E Ra EE ES RN RE RAE Ea E E ES IER RR RR WR EE E EE EE ER ET E EE E E ME E SERGE EE EIERE RRG RG EES EES L LLL SL REES E EE AA GEES EG REA KENN EE ES ES EZ E j WEE E NES ET ES EE ES E WE E E E EE EE Ni EE EE EZ EZ KG EE EES E EE EC ES E NEE ES EE EES EZ RE h A RU E EE ES EE H EE ES ETE EZ E EE SE EE E ES S Rz EE REES RE ER ES E E EE s EC UR UE EZ E EE UN ES E EE E EE EE E Tal CE ERE SE NEG TFET EE E EE EE E SS E E EE E EC tP ssp s EE a P ES EE ENEE EE EK REES REES ETS ES ES EES ES EG REN REL E Ea EE E EZ E A ES EC E EZ EZ ED KS Ez Dl Roa E SSES EISES ES EE SES SE SSES EES ES EHNEN SES SES ES et ett ot EES sf of SE ES DEE REK a s E ERE MME GEDE EE RR LLL AA AA RAEE A s ss s E KREESSER REG SSEEEEEEELCLLCGLLLEEEEELEDE amp SE IE ES e EE ES Ez ES ES EE E KEE Ee ES EE EE RE WG E rr EI Ez BEECEESEE AREE ES ES ES E e E n e EE EE EE EE EE E REG AA EE EE ES EE s a EE E S me ESE EE SEE SCENE EE EES EE SE s Ba SE ERES E EE ES EE ER RE EL ET E ER E eee aaa RE RI S S E ES ES TS t ing 11 25 LBS 208V 1 25 LBS 240V 1 25 LBS 480V 1 25 L
12. GON AJessooau JI s9ejda JO ue Buu o pue sjuaweje Buneeu epui 4o pedsui Aliens 7 YUPI 91225 IAQUISJ pue 19M07 9 Wustueyvou poddns yue ej eog ay jo JUOJ ay uo smaJos Buroo saAowsay G JUe 9Jeos uo uonoeuuoo sou Joguuossid tp Jejem Gututews4 ureJp O YUPI e5S UO sAjeA UISID jenuew uedo y un ou HO WNL Z NO JOPpul Ao UeJq L ONT HAAS MNVL 3013311093 31V9S 20 REPLACIN NIT FUSE 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 Warning Electronic components are very sensitive to electrostatic discharge To protect these components measures must be taken against damage from electrostatic discharge when replacing the unit fuse ESD protection The unit fuses may only be replaced by trained and qualified personnel Important If the unit fuse blows this is generally due to a faulty unit component Therefore you should check these components before replacing the fuse see table below Only use the correct type of fuse according to the following table Warning It is not permitted to use repaired fuses Fuse Specification Before replacing check F1 on supply 6 3 A Drain pump blocked module slow acting or coil faulty F2 on supply 1A Inlet valve b
13. Y OMG D UIA Old JI EIS pi WN y ur y Du s d HO UO 19U10 ONISHIM TONLNOO SNILO3NNOO 35804338 ATINFIJAVI SNOLLINALSNI 3S3H1 QV38 LNVLYOdINI 42018 TVNIN431 LINDA TOJLNOJ S3l 3S IGHN ISHN 25 Nortec www humidity com NHSC NHDI Electric Steam Humidifier Humidifier Mandatory Pre Start up Checklist p 1 of 2 Unit Serial t _ of humidifiers Tag Unit type NH NHDI Voltage V ph Steam output Ibs hr Customer Job Address Inspected by Date of inspection WATER QUALITY Well water City water O Softened water O Conductivity mhmos Hardness gr Silica ppm HUMIDIFIER MOUNTING Clearances around the unit Acceptable Obstruction Front door opens freely 3ft min O Top steam lines 1ft min O Bottom fill drain controls 1ft min O Right main pwr 3ft min O Left main pwr 2 min O Ensure the scale tank bracket is locked in place O STEAM LINES Slope up 2 per 12 O Slope down Y per 12 O Traps O Insulated J Length Size 90 deg elbows qty CONDENSATE LINES Slopped back to drain 9 Trapped 2 more than static duct pressure O Size 45 deg Elbows qty Can condensate be trapped anywhere in the steam line Yes O no O WATER LINES 1 2 at max 4ft from the unit water pressure 30 80psig DRAIN LINES Air gap located within 3ft of the unit O WIRING No loose wires around the unit or on the PC board Yes 9
14. are set through rotary switch 2 on the control board ng recommendations for the Steam cylinder mineral collector tank NHSC Only and steam cylinder NHSC Only insert Drain unit completely including mineral collector tank drain Remove lime collector tank remove steam cylinder Whenever possible chip off or scrape off any scale coating Wash and rinse parts with lukewarm soap water If components are heavily scaled place them in 8 formic acid until the scale has dissolved Then treat components as previously described Cleaning recommendations for heating elements Wash and rinse heating with lukewarm soap water If components are heavily scaled place them in 8 formic acid until the scale has dissolved Then treat components as previously described Warning On no account remove scale coating on the heating element with tools or by striking This could damage the heating element Cleaning recommendations for internal plumbing components Wipe down components inside the unit with a damp cloth clean water Severely scaled components should be cleaned using commercially available cleaning and de scaling agents Warning Ensure electrical connections remain dry For more information on cleaning agents and formic acid review notes in the installation manual 498 z Nortec NHSC NHDI Electric Steam Humidifier www humidity com Maintenance Checklist p 2 of 2 Note In all cases local regulations re
15. control or high limit over standard electrical box at height similar to typical thermostat Any wall humidistat should be in location representative of overall space being humidified and not in path of blower pack or air supply grille Do not mount on a outside wall where temperature fluctuation can affect control response 2 Mount duct humidistat in location representative of overall air humidity usually in the return duct Do not mount it directly in front of steam distributor or in turbulent or mixing zone Mount it where humidity and 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 temperature are uniform and representative of spaces being humidified one of several control wiring diagrams In all cases modulating signal interfaces through control terminal strip to main pc board inside 3 Mount duct high limit humidistat humidifier downstream of steam distributors far enough that under normal humidity and air flow 4 Forset point control at the humidifier an conditions steam will have been fully integrated controller can accept a direct absorbed typically at least 10 feet It must transducer signal The accuracy of the be located to sense high humidity only when humidifier to changing conditions will be uniform and representative air is dependant on the accuracy of the sign
16. humidification at an economical price The NHSC uses a micro computer control system for greater flexibility The NHSC has a liquid crystal display LCD to indicate system messages and display RH LAYOUT AND FUNCTION The NHSC humidifiers consist of a plumbing and an electric compartment In every case there is at least one steam distributor SD for installation in air ducts or blower packs remote mounted RMBP for direct space humidification Water enters the steam cylinder through the bottom via the fill cup assembly when the 24 volt fill valve solenoid is energized The water is heated via electric element and produces sterile steam for distribution into the air Primary electric power is applied to the heating elements in the steam cylinder when the on off switch is pushed on and all control options are calling A primary to 24 volt step down transformer provides power to the contactor holding coil s via the main 11 control board The humidifier s operating status is reported to the user by the green red and yellow indicator lights on the front of the unit The prerequisites for getting power and water into the steam cylinder are as follows On off switch must be switched on control circuit 8 10 must be made door interlock switch must be made interlock switch can be pulled out to operate unit Modulating signal must be calling Internal safeties must be made over temperature switch and groun
17. on Turn on the humidifier with the unit switch Continue to depress the blow off pushbutton until the system test has finished approx 10 seconds FAULT ELIMINATION Fault indication In case of malfunction during operation the humidifier control checks whether there is a temporary problem e g water supply interrupted for a short time or whether it can resolve the problem by taking necessary measures Such malfunctions set the unit into the Alarm status fault elimination The red LED flashes and an alarm message appears in the display alternating with the notice recovering please wait Note If the cause of the malfunction disappears of its own accord or if the controls can repair the malfunction the alarm message will automatically switch off Note If the unit is in display or setting level the alarm message in the display will be suppressed If the controller after several attempts fails to solve the problem number of attempts depends on the type of malfunction or if the problem obstructs further operation the heating voltage is interrupted via the main contactor The red LED stays lit and an error message appears in the display alternating with the notice Please turn off unit Note If the unit is in the display or setting level the error message in the display will be suppressed V ASI L6G OS1 Na 181 SOLUOD JOABUDIUM SIL JO SINOU 000G 49e ponoWAJ aq oj seu YU JO I9 0D ALIS
18. A p p p o pas LL m re D oO o BEN g t lt E 2 Wo LO gt CH OO c al BO get u CH L E eai TEI 2 m m e au lee os Gei ot pep m S ii el us co ca m m en aL a e a ol m RE Z oj o gt m e 8 ol S trei e S SES 15 Shale S ou oO ojl oO a oi ol Ol e W E bo ce A E o HI oi E in m col ri mi m mi E LI mi Oj El al 9 m m m ar E e uis s ss 5 e E 3 E a ao 2 of a nA ajo al alol Oo 2 a 9 a al al o C al c kri F n n l of ki C gt aa Si Si El Ei JI oo uo r Wil j aa e e ej al al ei ri r al i e cal wi e e cal col e aj in ola Oj al uo a a apa col ol co aj e e co Co Col cal cal cal sti ea ap r OO cal cal r e e cal cal oa al c4 ca cai al ao a OI Cl aj oi Hl oa alo u c Col c ol oi oi oi Hl Hl st Hl wl wl sti co Hl Hl in am aux m UA cx j pm Do I CG ce mam xag p Sek ll e Ol Cl oi sti La e r col e ei Cl sl sl sl sl zi Ciy Cd CJ CO e ais 31 SEIL PEE GECE CECE EES SEKR SES sese lt eje pete jele SEKR SEKR COES l efel_ GEZEI ES efe ES efe efe efe ere e s 2 EOOD Tele e e x pere 2 pere t Jefe 2 Jefe s 1508141 Mot Shawn CABLE Float DOUBLE UN
19. BS 600V 5 LBS 208V 5 LBS 240V 5 LBS 480V 5 LBS 600V ing ing ing ing ing ing ing astic with Funnel NHSC Only oat Chamber Assembly Float Chamber Mounting Hea Hea Hea Hea Hea Hea Hea Hea Flange Lid Heating Element Top SS Tank Liner NHSC Only Gasket Large Tank Tank Lid Assembly ement ement ement ement ement ement ement ement e 3 o c c c el e o Z w wv WA WA TE w Wa 1 o N oi LO Compression Fitting Assembly 3 8 SST NHDI Compression Fitting Assembly 3 8 Brass NHSC Drain Disk Large Tank NHDI Only Fitting Brass 3 4 Plug Heating Element Slot Gasket Heating Element Switch Temperature Clamp Large Tank Lock Assembly Steam Outlet E E E E E E E 507480 E Capacity Voltage Description Pump Drain 24V 60 Hz Fill Valve DWC Assembly Gasket for Fill Thru Cabinet Drain Canal Gasket Drain Canal Scale Tank Bracket NHSC Only Scale Tank Assembly NHSC Only Ground Wire Door to Cabinet Bracket Cabinet Large Cylinder Hose Fill Cup Spring Clamp Hose O ring NHDI Tank Base O ring NHSC Only O ring 7 3 4 x 3 16 1505907 Base TankNHSC Only 1 Bracket Liner P 1507479 1507283 1507284 1507279 1507280 1507281 1507282 1502646 F 1502683 Je 1507849 1502684 1502641 MEA 505918 1502699 704205 HO CU C CL E 17
20. D Keypad Collector MN Displa Lat Tank NHSC LED Status Water Supply Tal ae Low Voltage Drain Line lt iring 1 75 O D 24 Vac E Primary Wiring Ai Ga Copper Funnel p Drain by others NHSC NHDI using a Remote Mounted Blower Pack RMBP 2 All NHSC NHDI Series blower packs consist 6 Forinstallation details please refer to the of a steel cabinet containing blower motor installation manual located in the Steam powered by voltage directly from the Distributor box Form XX 231 humidifier fuse relay speed select switch stainless steel steam distributor supply air 7 For calculating absorption distances refer to grille with adjustable louvers and a built in H E L P Software or the Steam Distribution manual reset safety thermostat to turn off the Engineering Manual Form XX 232 humidifier if the blower pack gets overheated Control thermostat mounted on the steam distributor starts the fan when steam is generated When supply voltage differs from voltage required to run blower motor the blower pack will contain the proper transformer All blower packs provide intake air filters if required 3 Forinstallation details about the blower pack please refer to the blower pack installation manual located in the blower pack box Form HXX 2TT STEAM DISTRIBUTORS AND SHORT ABSORPTION MANIFOLD 1
21. Figure 21 Major Maintenance NHSC NHDI NHSC Maintenance Complete cleaning between 600 6000 hours of operation Unit indicates cleaning is required This cleaning normally occurs once a year depends on water quality The scale collector tank and the stainless steel tank are removed and cleaned Check all plumbing and electrical components for any issues To safeguard reliable operation the maintenance of the NHSC should be devised in three stages A distinction is made here between periodic inspections minor servicing and major maintenance of the steam air humidifier The intervals required between minor servicing and major maintenance depend on the water quality and the quality of steam generated and can be pre selected on the rotary switch S2 on the control board After expiry of the selected interval the yellow LED flashed and an appropriate message alternates with the normal operation indication The following is an overview of the work that should be undertaken for the three maintenance stages Periodic In ion When Once per week Work Inspect the water and steam installations for correct sealing and any possible damage Inspect the drain line for soiling Inspect the electrical installation for loose cables and damaged components Inspect the humidifier for irregularities both external and internal Minor Maintenance When The ye
22. G DIAGRAMS 34 INSTALLATION RECEIVING amp UNPACKING EQUIPMENT 1 Check packing slip to ensure ALL material has been delivered 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 Inspect shipping boxes for damage and note on shipping waybill accordingly After unpacking inspect equipment for damage and if damage is found notify the shipper promptly All NORTEC products are shipped on an F O B factory basis Any and all damage breakage or loss claims are to be made directly to the shipping company PRE INSTALLATION CHECKPOINT Ensure that available voltage and phase corresponds with humidifier voltage and phase as indicated on humidifiers spec label see Figure 1 Ensure that the dedicated external disconnect is of sufficient size to handle the rated amps Figure 1 NHSC NHDI Series Humidifier Steam Outlet x Optional SSR 1 75 OD Cooling Fans Keypad Display Power and Supply d l Control Wiring as indicated on the spec label Refer to local codes 3 Report any discrepancy immediately BASIC HUMIDIFIER CONFIGURATION NORTEC NHSC NHDI humidifiers share a modular sheet metal cabinet Each unit has a right side electrical compartment Each electrical compartment has a hinge down front door which is removable from any
23. IT 1502662 1508143 Mot Shawn 1505014 Mot Shown 1508389 Mot Showt 1508333 Mot Shown CABLE LOGIC TO POWER BOARD DOUBLE Wire Green 10 AVG Hot Shawn apii deponi totg t 0 1 2 151 2 2 2 2 1 au v Z Z e A SW N 7 e y A S V a V 2 Z g y A A H d Y E NN A i a d N yai A uN 6 YS Q s L e 4 Y 5 H g d ES ka EFE DE g Lo b A Gei x vi M X o M I Ve amp cC S S v b l R PD n T p Plumbing Exploded View EZ 5 I RS RE EC EE EI be ree E E IE E IC n r Pi E EE ES ES E E ES e e sus sss sss eee Cee RARER ES ELE ET E Paletas sss ss A NES ERES EE 5 EE RITE ES ES EE ES ES UR RR EE E EE EE EE E EE TRES ES ED ES EE ESI aj Sp SES ESL ELSE LL SES D ESESESESESESES TLESIEHLHE L L SES ES IS EE ER EDS ES ES ES EE EG ES SES ES js ES ES EZ Ea ES ES ER A ESSA WR EEN ES E EZ EE EZ EE RR EE EZ ES E ES EG ET ERES EE ES ES E E ww ed ed Od SEEN EE o EE EEE o EEE EEE EEE EERE EEE EES ER BSCE ERE EEF EEE 8 EERE op EEE ERE EEE pea ESSE ES Es eee E eee E EE Eo NN RR eee E EE A EET EC ER EE Ez EE cn ES ES Ka E En EE TS UN ES E A ES E ES E EE EZ ERR UR EE E EE S ES E E ER E E s a s HL LEHESELISELLLELISEELEELEELLLLLELLEEEELEELBIELISEPRELELEPISISELEELEIE EC ae ESESESESESEZESEZES EZ ES Ec CES Ez ES EZ ES ES ES EUN o
24. ONTROLS 4 kok ok kok kok e rr rr nn 10 OPTIONAL MODULATION CONTINUOUS CONTROL PACKAGES BY NORTEC 11 OPERATION 11 INTRODUCTION unauma 11 LAYOUT AND FUNCTION 0 2 s 11 LEVEL REGULATION i wl ah ww ra las S wm me a XC Q Sas ES IS 11 STEAM GENERATION REGULATION a x x E E Da n A la Cl tt ME E UE SES ae a ce sat C 12 FLUSHING Cx 023 0100023040001 12 SCALE COLLECTOR TANK M00 wm OR Q aa Aa 12 NHSC NHDI OPERATION uu 12 STARTING OPERATION Zo de O Gh OE A6 O Se A E QU ae 12 INTERROGATION OF THE OPERATING STATUS s e kon ak ak n an ak n n nn 14 MAINTENANCE ll s 17 NOTES ON MAINTENANCE ooo a 17 DISMANTLING AND REASSEMBLYWORK 00000 eee eee 18 NOTESONCLEANING 18 FAULTELIMINATION 19 SCALETANKSERVICING 20 REPLACINGUNITFUSES 21 RESETTINGFAULTINDICATION ERROR 000002 s e s s o ee 21 HEATING ELEMENT REPLACEMENT INSTALLATION INSTRUCTIONS 21 TROUBLESHOOTING a ar GQ DAN W Q at ma A CN 23 CONTROL CIRCUIT TERMINAL BLOCK 0022000005202 o s gt 25 PRE START UP CHECKLIST 26 START UP CHECKLIST 2 MAINTENANCECHECKLIST 28 EXPLODED VIEWS e sore k a AA AA AA tr aeee Ass 30 WIRIN
25. Steam distributors are an optional accessory used to directly distribute steam to localized areas such as computer rooms which are served by ducted air These distributors are made of stainless steel and are mounted level to the duct 2 The SAM e optional accessory has the same function to distribute steam inside a duct The only difference is that this system is designed to reduce the absorption distance of the steam in the duct by optimizing the steam distributors 3 Each cylinder requires its own steam line and at least one distributor do not join two or more cylinders to one larger steam line Any cylinder s steam line may be divided into multiple branches to feed more than one distributor Steam supply line tees are common stainless fittings that are available for this purpose 4 Steam distributor locations are typically as follows supply air duct return air duct air handling unit Proper location should consider air temperature relative humidity before the distributor air velocity dimensions of the location amount of steam being introduced into the duct downstream obstructions and surfaces vulnerable to wetting 5 The NHSC NHDI can overcome 6 of WC duct static pressure max Consult the factory if you exceed 6 of W C Figure 9 Typical AHU Duct Application using a SAM e a SAM e
26. al over humidified or approaching saturation 5 The modulation signal must increase from 4 Mount duct air proving switch so that it is minimum toward maximum as sensed RH able to sense air flow or lack of it Wire it to actual RH drops below desired RH RH make when air flow is sensed and break when set point In response humidifier s steam air flow fails output will increase from minimum toward maximum When humidifier s steam output 5 Check operation of all on off controls before Ibs hr matches humidification load Ibs hr starting humidifier modulation signal will stabilize 6 Calibration of controls on off or modulation in 6 Field wiring connections for modulation control the field may be necessary due to shipping are to be made to external side of terminals and handling Verify humidistat accuracy 28 30 and 32 on humidifier s control terminal before commissioning system strip Always refer to the external control s wiring diagram factory supplied with each PTIONAL MODULATION NTIN NORTEC modulation control option CONTROLS 7 Varying dc Voltage Modulation Signal 1 Read on off controls section first since it is Powered by Others NHSC NHDI necessary to all control systems humidifiers can be factory configured to accept the following vdc signals 0 10 vdc 0 20 vdc 2 Virtually any modulation continuous control 1 5 vdc or 2 10 vdc Wire according to external hardware by others as long as it has NORTEC supplied exte
27. als 8 and 10 on the low voltage control terminal strip or replaced with a jumper wire for constant operation Caution this is the hot wire from the 24V control transformer it will blow the 3A fuse if any control field wiring touches ground A Wall or Duct Mounted Control On Off Humidistat Wired to make on drop in humidity break on rise to set point Set to desired RH Can be a make break set of contacts from a Building Automation System B Duct Mounted Safety High Limit On Off Humidistat if used Wired to make on drop in humidity break on rise to safety set point Set to approximately 85 RH as a safety to help prevent saturation and wetting in the duct C Duct Mounted Safety Air Proving On Off Switch if used Wired to make with sensed air flow break when no air flow Used as a safety to prevent saturation when there is no airflow 1 NORTEC offers various versions of A B and C to suit each application In general A is essential whereas B and C are highly recommended in ducted applications 2 Field wiring from humidistat to humidifier and between devices should be 18 AWG or heavier and kept as short as possible 3 Low voltage control terminal strips are provided in the electrical compartment Internal sides are factory wired External sides are to be field wired 4 Each humidifier is supplied with a wiring diagram inside D Blower pack safeties NTROL INSTALLATION 1 Mount any wall humidistat
28. be factory configured to power a 3 wire varying resistance modulation humidistat by others if pre specified Wire according to NORTEC supplied external wiring diagram that comes with each modulation option Choose from 0 500 or up to 0 1000Q To share the signal with more than one humidifier consult factory Air Proving Switch Control Hurnidistat Optional external remote indication Any or all of these remote indications can be utilized Refer to Trouble Shooting Manual for system status indication PTIONAL MODULATION NTIN 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 NORTEC offers several packages for NHSC NHDI Series humidifiers Wire according to NORTEC supplied external wiring that comes with each optional modulation package 3 Optional modulation packages without modulating safety high limit can use on off safety high limit Refer to on off controls section 4 All versions can use on off safety air proving switch Refer to on off controls section OPERATION INTRODUCTION The NORTEC NHSC Series humidifier is a completely new design based on up to date technology The NHSC is designed to provide clean steam
29. city 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 Drain Cycle control board drain cycle 4 120 The following indications are provided for the set flushing interval Left Switch setting on rotary switch S1 Right Set flushing interval Note The flushing interval is set on switch S1 on the control board Figure 18 NHSC NHDI Drain Cycle Parameters Value Settings Drain Interval At 100 Steam Capacity 0 Min s soanen oef NHSC DI NHSC S1 Setting NHSC NHDI Main Board Drain Interval S1 LCD Example 4 120 Display Position Duration between drain cycles NOTE Approximately 1 liter or 0 26 gallons will drain during these intervals Drain Water Cooling will be active during these intervals to temper the drain water to 140 degrees F 60 degrees C or less Note Water quality conditions resulting in component failures are not covered under Nortec s standard warranty The factory settings are based on the following water conditions when the unit leaves the factory Water NHSC NHDI Parameters Conductivity 0 1500 MicroMhos 0 50 MicroMhos Hardness 12 grains per gallon 0 grains per gallon gpg gpg Silica 12 parts per million O parts per million ppm ppm PH 6 5 7 5 7 Chlorides gt 50 parts per mil gt 25 parts per mil
30. cks 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 To connect the primary and control class 1 circuit wiring required wiring the wiring is fed through the grommet provided in the bottom of the blower pack The terminal block and strip are accessed by removing the blower pack cover 5 Field wiring of remote blower packs must conform to national and local electrical codes Refer to wiring diagram supplied inside the humidifier 6 Use approved wire for power connection from two pole terminal block of remote blower pack to additional two pole terminal block inside electrical section of humidifier 7 Use approved wire to connect the ground clamp of remote mounted blower pack to ground clamp provided in the electrical section of humidifier LOW VOLTAGE CONTROL WIRIN On Off Controls Figure 15 External Wiring of On Off Controls External Internal Controls are available from NORTEC as accessories If controls were not ordered with humidifier they must be supplied by others The following information is relevant to all controls factory supplied or otherwise A B C and D described below are to be wired in series only one path for current across termin
31. d fault LEVEL REGULATION The water level in the steam tank is continuously monitored with the level unit The unit pulse fills based on steam production The pulse filling in the unit varies depending on the water level detected by the float chamber One magnetic float monitors five different water levels in the float chamber The second float ensures the water level is always above the heating elements The pressure equalizing pipe between the steam connection and the level unit ensures that the water levels are the same in the steam tank TEAM 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 FLUSHING NHSC ONLY The evaporation process increases the concentration of minerals in the water of the steam cylinder A suitable volume of water must be flushed through the steam cylinder from time to time and replaced by fresh water to ensure that this concentration does not exceed a specific value unsuitable for operation The NHSC NHDI steam humidifier performs a flush cycle This consists of the following two forms of flushing Automatic flushing takes place as soon as the water in the steam cylinder exceeds the upper operating level e g By foaming of the water Flushing is a time dependent process at preselected time intervals Automat
32. d workmanship No warranty is made against corrosion deterioration or suitability of substituted materials used as a result of compliance with government regulations THE COMPANY s obligations and liabilities under this warranty are limited to furnishing replacement parts to the customer F O B THE COMPANY s factory 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 COMPANY s limited warranty on accessories not of NORTEC s 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 COMPANY makes no warranty and assumes no liability whatsoev
33. ection 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 Faults relating to electrical installation e g change of unit fuse must only be carried out by authorized personnel Repair work and replacement of faulty components must only be carried out by your service technician MAINTENANCE All maintenance work must be performed by adequately qualified and trained personnel familiar with the dangers involved Ascertaining the qualifications is the customer s responsibility Instructions and details concerning the maintenance work must be observed and adhered to without fail Only the type of maintenance work outlined in this documentation must be carried out Figure 20 Minor Servicing NHSC ONLY L NHSC Maintenance Mid season cleaning between 250 750 hours of operation Unit indicates cleaning is required Remove and clean scale collector tank D Re install scale collector tank Re start humidifier This mid season cleaning ensures long operation time before full cleaning is required Use original spare parts exclusively to replace defective parts Before maintenance is initiated the steam humidifier must be taken out of operation in accordance with instructions in the manual and protected against unintentionally switching on the humidifier 27s NOTES ON MAINTENANCE
34. er for consequential damage or damage resulting directly from misapplication incorrect sizing or lack of proper maintenance of the equipment THE COMPANY retains the right to change the design specification and performance criteria of its products without notice or obligation Ax r Nortec a WMH Company Model Serial Cylinder Cylinder Last Replaced MTH DAY YR MTH DAY YR MTH DAY YR Listed Humidifier E65185 AxAir Nortec Inc AxAir Nortec Inc 826 Proctor Avenue 2740 Fenton Road Ogdensburg NY 13669 Ottawa ON K1T 3T7 A WMH COMPANY PRINTED IN CANADA ae to
35. g upwards using field supplied fasteners For a single unit use a minimum of 4 12 x 3 long wood screws For a double unit use a minimum of 6 12 x 3 long wood screws These screws must be fastened securely on a 2 X 4 wood stud or equivalent support If any spacer material is used between the bracket and the structural material such as drywall increase fastener length accordingly In addition install a minimum of 2 field supplied fasteners in the holes provided in the back of the unit to prevent the unit from being bumped off the wall bracket See Figure 4 4 Mountunit on hanging bracket after ensuring the bracket is properly anchored to the wall Raise the unit and place it on the hanging bracket ensuring that the flanges in the mounting bracket are properly aligned and centered with the flanges of the unit Push the unit in towards the wall to properly interlock the two flanges Note This will result in the unit shifting slightly down Ensure that the hanging bracket s flanges are fully engaged Figure 5 Installation of the Scale Tank Bracket NHSC only 1 Line up holes in bracket with holes in drain pan Fasten the bracket to the drain pan using the four Nylon lock nuts provided 2 Fasten the front of bracket with the two 10 24 self tapping screws provided 3 The two locking screws for the bracket should already be installed and visible from within the plumbing section of Figure 7 the unit and that t
36. he unit s flanges are Remote Mounted Blower Packs RMBP properly contained within the wall bracket 5 Install tank bracket See Figure 5 NHSC Version only Mounting the scale tank NHSC Version only Figure 6 Remote Mounted Blower Pack Y Bracket Steam Power Condensate Dimensions Shown Are Steam Line Connections Allow Minimum 12 31 cm Clearance On Each Side Remote Mounted Blower Pack cabinet provided by others should be used Consult factory 9 DO NOT mount humidifiers on vibrating Collector surfaces or duct work Tank 6 Make sure humidifier is level BLOWER PACKS 7 DONOT mount humidifier on hot surfaces 1 Blower packs are an optional accessory used 8 If humidifiers are mounted on roof a to directly distribute steam to localized areas thermostatically ventilated weatherproof such as computer rooms or in structures that do not have a built in air distribution system Figure 8 Typical Remote Mounted Blower Pack Installation m Remote Mounted Blower Packs RMBP Only NHSC uses Nortec steam hose 1 75 O D or lt stainless steel pipe gi _A NHDI uses Nortec steam i hose 1 75 O D or A stainless steel pipe Min Trap Do not exceed 10 ft Height 3 when using steam hose Required Steam Line k Connection Humidistat e ee Scale LC
37. ic or time dependent flushing takes place based on the water quality and the operating data SCALE COLLECTOR TANK NHSC ONLY The minerals precipitated by the evaporation process accumulate at the bottom of the steam cylinder Units designed for operation with untreated water are equipped with a scale collector tank located directly underneath the steam cylinder This way the minerals do not accumulate in the steam cylinder but mainly in the collector tank thus extending the service intervals and reducing the maintenance costs NHSC NHDI OPERATION STARTING OPERATION The following procedure should be carried out in order to operate the steam humidifier Examine the steam humidifier and installation to ensure it has been installed properly or for possible damage Caution Damaged units and units with improper installation must not be operated Open the filter valve shut off valve in the water feed line Switch on the external disconnect for the main supply Heating and control voltage M E Ensure the valve on the NHSC mineral tank is closed Switch on the steam humidifier main switch The steam humidifier carries out a system test The display below appears and the three LEDs light for approx 3 seconds If a fault is detected during the system test a corresponding fault message is triggered If the system test is successful the steam cylinder fills up and a float test is carried out functi
38. ilter sieve or replace Inlet valve Inspect hoses into unit and connect if necessary Replace faulty hoses Connect level unit Clean or replace level unit Max Boil down rate too long Error code 4A 4B Alarm 4A steam time Error 4B steam time Individual heating elements faulty Main voltage too low or failure of a phase L1 L2 or L3 Steam line too long or not insulated Replace faulty heating elements Replace fuses on power board Check main voltage and connections Maintain maximum line lengths max 15 Insulate steam lines Max Drain time exceeded Error code 5A 5B Alarm 5A drain Error 5B drain Drain pump not connected or faulty Outlet line from unit kinked or blocked Water outlet blocked external outlet line or siphon blocked Hose to level unit blocked Connect or replace drain pump Inspect outlet line from unit replace if necessary Clean water outlet line and siphon Clean or replace hose Le Malfunction Indication Cause Remedy Invalid level Error code 6A 6B Alarm 6A level indicat Error 6B level indicat Level unit faulty Magnetic field in vicinity of level unit Replace level unit Eliminate magnetic field Steam pressure error only Error code 7A 7B Alarm 7A communication Steam hose blocked or restricted water trap Pressure balance adapter into steam connection fitting blocked D
39. lating 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 Switch on the steam humidifier with the unit switch Continue to depress the drain button until the system test has finished approx 10 sec Comments 29 30 Capacity mon msa oz ozon 0303 0453 065 3090 3135 3 180 3 ums um um fo um ke ken Pa Pa Ca Ca um um un fo un um um um um Voltage 5 La La L O Nortec PN Descri z E d m LL co Pb c ea c ur ita pe data pe pe tats faa ka e po pa ta pe fa po RIEN ata pa ped epa AM A ed jaja El HCH Gorund Leakage Detection Board PCB Support Board 1505328 1502555 4 1502608 SSR amp Heat Sink 45 A Single SSR amp Heat Sink 75 A Single AB Electrical Side Panel 1507815 5 1507841 Electrical mE View KC Led zE PIE Le n Ht afi HE afi afi 111 pE 111 fafi fafi fat THE fafi fafi Moa a m 111 e a ha En uo lr WS cmm cce cie erc e cie Set ere ee ere rp ES eee ep ee Nm lc Ee w Led BE nana ins EE EE Ces Cd Transformer 208 2404 80 500 Y 244 2504 CABLE LOGIC TO POWER BOARD SINGLE CABLE BREAK OUT BOARD L sme Jorouns camp A
40. llow 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 Figure 22Scale Tank Removal 1 Turn unit off 2 Drain unit and scale tank 3 Unlock support bracket by removing locking screws 4 Open both mechanisms by rotating counter clockwise until opening is visible 5 Place scale tank on support bracket 6 Rotate bracket to close mechanism and raise scale tank Note ensure scale tank lines up with opening at the bottom of the drain pan when raising 7 Lock mechanism by re inserting the two locking screws Major Maintenance When The yellow LED flashed and the message major maintenance due appears alternating with the normal operation indication 18 Work Carry out the periodic inspection items Empty the steam tank Clean the scale collector tank NHSC Only Dismantle and clean the steam cylinder Dismantle and clean the liner NHSC Only Clean the unit inner chamber Inspect the components inside the unit for damage R ing Minor and Maior Maintenan In order to return the steam humidifier to normal operation after minor or major maintenance is complete you must press and hold down the drain switch while tu
41. locked module quick acting or coil faulty F5 on control 50mA Control signal board quick acting RESETTING FAULT INDICATION ERROR In order to return the steam humidifier to operation after fault indication error you must press and hold down the drain switch while turning the unit in the off position for approximately 10 seconds Then turn the unit switch back on and release the drain switch after a 10 second interval HEATING ELEMENT REPLACEMENT INSTALLATION INSTRUCTIONS 1 Drain unit 2 Turn off the unit and disconnect primary power to the unit 10 11 12 13 14 15 16 17 18 Open the plumbing door Let unit tank cool down if needed Remove steam hose by loosening gear clamp Disconnect temperature switch Note there is no polarity with this cable Remove gear clamp and remove tank from the unit Undo cylinder tank strap and remove tank from unit Remove lid clamp open lid and identify heating elements to be replaced Remove the nut washer plug and gasket from the top of heating element you are replacing Note Save the hardware for installing the new heating element Note the heating element orientations and remove heating element by pulling it down through the lid Place gasket from step 15 on new heating element and install new heating element by inserting it into the lid from the bottom ensuring orientation matches previous heating elemen
42. lower packs are wired by others to be powered from the humidifier As a safety feature blower packs come eguipped with a manual reset safety thermostat and relay built into the blower pack cabinet The manual reset thermostat turns off the humidifier if the blower pack gets overheated The control thermostat mounted on the steam distributor starts the fan when steam is generated All blower packs have high efficiency blowers to minimize the frontal and overhead clearance required to absorb the steam Figure 14 Primary Voltage Supply Wiring VOLTAGE ACTUAL PRIMARY LINE VOLTAGE WIRING TO UNIT BY OTHERS Ground Wire ul Ground Le Ground g Dedicated 2 Pole Circuit Breaker Termina Or Block Disconnect Single Phase Unit Single Phase Supply Required Voltage Between L1 And L2 Load Balanced T n Ground Wire Ground Ground Leg Dedicated 2 Pole Circuit Breaker Termina Or Block Disconnect L3 Single Phase Unit 3 Phase Supply Neutral Required Voltage Between L1 And L2 Load Will Be Unbalanced T Ground Wire D Ground Ground Leg Dedicated Circuit 3 Pole Breaker Terminal Or Block Disconnect Neutral 3 Phase Unit 3 Phase Supply Required Voltage Between Any Two Legs Load Will Be Balanced NOTE Voltage At Terminal Block Must Be In Accordance With Spec Label All Wiring To Be In Accordance With Existing National And Local Electrical Codes 4 All blower pa
43. on check on the level unit The display below appears filling Note If a fault is detected during the float test an appropriate fault message is triggered If the float test is successful the NHSC NHDI will be in normal operating mode The display below appears and the green LED lights The following procedure should be carried out only on the first occasion that the unit is operated NHSC DI ready e Check the function of the steam humidifier Switch on the humidification by raising the set humidity value on the humidity controller humidistat NHSC NHDI Display Switch off the humidification by lowering the set humidity value on the humidity controller humidistat NHSC NHDI Display Check for correct functioning of the monitoring equipment external safety network e Set the desired humidity value on the humidity controller humidistat Make sure no leaks are present The heating current switches on as soon as the humidity controller humidistat demands humidity The yellow LED lights and steam is produced after a short delay approx 5 minutes Operating status display on the unit The operating status is displayed in the LED on the unit as follows 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 a
44. or stainless steel to 3 8 OD and connect to the factory supplied 3 8 olive compression fitting under the humidifier 4 Same installation as 3 but add Drain Water Cooler instead of fill DRAIN LINE NHSC 1 Humidifier is equipped with a 1 5 O D unthreaded drain outlet on underside of drain canal on bottom of the humidifier see Figure 1 11 A field supplied funnel see Figure 12 is recommended It will prevent backup in the drain pan and in the cylinder due to partially blocked or badly installed drain lines This prevents rusting of the drain pan The NHSC scale collector tank is also equipped with its own drain It is recommended to pipe with a flex hose the scale collector tank to allow drainage if required while maintaining ease of servicing DO NOT HARDPIPE The drain line should not end in a sink used frequently by personnel or where plumbing codes prohibit it Route to a floor drain or equivalent for safety reasons since drain water from humidifier can be very hot Keep drain lines as short as possible Keep drain lines sloped down not level and not up since low spots in drain lines will accumulate sediment and cause backup The drain line should be 2 0 O D copper pipe or larger Do not use plastic pipe for drain lines Consult factory DRAIN LINE NHDI Humidifier is equipped with a 1 5 O D un threaded drain outlet on underside of drain canal on bottom of the humidifier see Figure
45. partially or fully opened position Each electrical compartment has a screw mounted right side cover which can open for ease of electrical connection For safety the door when closed keeps the side cover from being opened Single units have a plumbing compartment attached to the left side of the electrical Double units have a second plumbing compartment Each plumbing compartment has a hinge down front door For safety the door must be closed in order to engage the safety interlock To avoid any danger never operate the humidifier with a door off To open the doors unlock lift door up slightly and pull top of door forward Door will hinge 180 degrees and hang straight down To remove door swing door parallel to floor Then lift up slightly and out To reinstall door hold parallel to floor and insert hinge pins at bottom Figure 2 Minimum Steam Line Clearance Min 10 Degree Slope frap See Section On gt Condensate Return Line NOTE Trap must be 3 minimum down from steam distributor If not condensate must be routed to drain Figure 3 Clearance Required Top View Condensate Return O Ce O Vi WES VEN 212 R A Wa d zi Ka S DI Lo S 06 LS SZ S fel Right Side LI cm EXXJ EI Ba DC E co co co co co coy Cc co LI LI LI co MAH SEP OOOO OU ON SABE NSUDDDDO000NU000088 IUINRDRRHHARRBDDIIN DID DU Steam Outlet Front NOTE Local and national codes ma
46. ppears in the display Red LED lit Insoluble problem The relevant error message appears in the display Optional Remote operating and fault indication If the steam humidifier is equipped with the optional remote operating and fault indication option RFS the operating status will be shown as follows K1 Steam N O Normally open K2 Error N O Normally open Or N C Normally closed K3 Service N O Normally open Or N C Normally closed K4 Unit On N O Normally open Eds 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 ration Call up the display level with lt W gt or 4 lt gt next operating parameter previous operating parameter Exit the display level with Menu Description of the operating parameters on the isplay level The following describes the individual operating parameters that can be selected using the keys lt gt and after the display level has been called up Steam Productions steam prod ref 50 act 25 Current actual and nominal value of steam production in percentage of total output Nominal value Unit capacity x input signal value Actual value max Unit capacity x input signal value x capacity limitation Note If the inte
47. rior of the unit Wipe down components inside the unit with a damp cloth clean water Severely scaled components e g the inlet funnel and the blow off pump should be cleaned using commercially available cleaning and descaling agents Warning The electrical connections and electronic components must remain dry Notes on Cleaning Agents Warning Formic acid is harmless to the skin but it attacks the mucous membranes Protect the eyes and respiratory tracts from contact with the acid and its vapor wear goggles and work in a well ventilated room or outside The use of disinfectants is only permitted if they leave no toxic residues The components must be rinsed thoroughly with water after cleaning in all cases Caution Do not use any solvents aromatized or halogenized hydrocarbons or other aggressive substances for cleaning purposes The information and instructions regarding cleaning agents are to be strictly observed and implemented In particular Information relating to the protection of personnel environmental conservation and restrictions regarding usage should be adhered to In all cases local regulations relating to environmental protection must be implemented To reset the maintenance indication When maintenance work has been completed the maintenance display can be reset as follows Turn on the service switches in the main supply line With the unit switched off depress and hold the drain switch M
48. rnal controller is activated only the actual value is shown Under the following conditions the actual value may differ from the nominal value upon activation of the heating power if capacity limitation is active during the filling cycle of the steam cylinder Analog Input humidity demand Analog input 25 Current value of the signal applied to the analog input in of its max value Note If the internal controller is active the displayed value corresponds to the current air humidity Yorh 14 Internal Controller Controller funct off Internal controller activated on deactivated off Working Hours elapsed time 623 Total of working hours elapsed since initial commissioning of the steam humidifier Time Remaining to minor major service time to mainten 600 1200 The time remaining in hours before the next minor major service Can be increased for poor water conditions or decreased for good water conditions Figure 17 NHSC NHDI Maintenance Intervals Value Settings Position Interval Interval 52 Minor Maintenance Major Maintenance 600 hrs 600 hrs 900 hrs 900 hrs 1200 hrs 1200 hrs 1500 hrs 1500 hrs 3000 hrs 6000 hrs Factory Settings NHSC NHDI 52 52 Setting Setting i c Ha Aot Mo OG NHSC NHDI Main Board Maintenance Interval 52 NOTE Consult factory before changing parameters Note The stated times are based on 100 steam capa
49. rnal wiring diagram RH set point circuitry may be interfaced that comes with each modulation option To with pre specified factory configured pc board share the signal with more than one via the control terminal strip humidifier wire in parallel to each humidifier If a different signal is desired consult factory 3 Modulation continuous control by others for use with NHSC NHDI humidifiers involves 8 Varying dc milliAmp mA Modulation Signal Powered by Others NHSC NHDI Figure 16 humidifiers can be factory configured to Generalized Modulation Wiring accept a standard dc mA signal if pre specified Wire according to NORTEC NHSC NHDI SERIES supplied external wiring diagram that comes CONTROL CIRCUIT TERMINAL BLOCK with each modulation option Choose from IMPORTANT READ THESE INSTRUCTIONS CAREFULLY BEFORE CONNECTING CONTROL WIRING 0 20 dc mA or 4 20 dc mA To share the NOTE See Included Diagram s For Accessory Wiring Instructions signal with more than one humidifier consult NHDI Dry Points rated 24 Vacldc 1 0 Amps facto ry Other On Off max resistive load per Indicator Devices om OPTIONAL REMOTE 9 V A High Limit Modulation Control STATUS PCB i arying Resistance Q Modulation by See Diagram included with unit for details NOTE If no On Off Control is used then 8 10 32 30 28 61 A field jumper must be connected across 8 and 10 in order for humidifier to operate Hurnidistat Others NHSC NHDI humidifiers can
50. rning the unit in the OFF position for approxiamately 10 seconds Then turn the unit switch back onfor 10 seconds and release the drain switch and the LCD message will return to normal DISMANTLING AND REASSEMBLY WORK Removal of the scale collector tank NHSC Only Caution Before commencing any dismantling work the humidifier is to be taken out of operation as previously described NOTES ON CLEANING NHSC Only Cleaning the steam cylinder scale collector tank and steam cylinder liner Whenever possible clean off any mineral coating that has formed Wash parts with lukewarm soap suds and then rinse off well Note if the components are heavily scaled place them in 8 percent formic acid until the scale has dissolved Then treat components as previously described Cleaning the heating elements Immerse cover with heating elements fitted to 1 2 cm below the rim of the cover in a container with 8 percent formic acid Ensure electrical wires do not make contact do not fully submerge Allow the acid to take effect until the scale coating has dissolved 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 or by striking This could damage the heating elements Cleaning the inte
51. s s E bei STEEN u n aam mp pn casam a nl DR M serta m pomme m m nh X1 gd JN CHIC gt d ag lee SE CAT CA CR D I CRT Al DAC MWA oo Give WNC ANNE CO t H vd SAIS 3k HAE gv Mick al ue DM NO GE MEN YOUNG Ie vl SE Na NIA OCHO MES YOU Sg RIO IN f TE tere E SES z K Rl hi k5 fs ai bi z at r1 LL Ae d i n a P Ir i FX ett 4 4 Gi L TETEN pj H H 1 Pa em D ld Un AE HId AA LT oa AWkISIQ OD I OTAI E r EC jj OF Ld n GM HEH somni DNA anno NIU o foal AD CNAE kit per Eger ZEFtSg BE E dl SCbCO p ari Pe E TH preter ve LA OMA Fe A ETH ee FSU PTT INFANTS en BC OM CH Ed HAS MOUNIS E ALDI MEZA nia API TJA go ge a Hi Gg 131 Aa T a a m ap ap CH db Mum FILIIIIIII LLL LLLLLLLLI ER pr A sd eee ee DE d 7 p H D H D H H D H H D r3 D anana kan ki PECL OS LL TELE k vi L Ce vi 35 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 an
52. t Re install gasket plug washer and nut Tighten assembly Connect element pins into the male connector by pushing in the pins and they should lock into place pull to ensure Ensure all heating element fastening nuts are tight Re install cylinder tank lid clamp on cylinder and re install the tank in the unit Take care to ensure that the tank is level in the base and that the connecting components are aligned Fasten the cylinder into position using the cylinder strap Re connect steam hose and clamp to steam output coupling 19 Connect female connector to the male 21 connector 20 21 22 23 24 25 Figure 23 Connect temperature switch cable Note This cable is not polarity sensitive Double check all the connections Turn the unit on Allow unit to fill Inspect unit operation and check for leaks Close and lock plumbing door p D 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 Often the steam hose connection has not been properly executed or the fault lies with the humidity control system The following table gives a list of possible malfunctions the appropriate alarm or error message details of their cause and notes on how to deal with each problem Malfunc
53. tion Indication Cause Remedy Min Filling time too short Error code 1A 1B Alarm 1A filling time Error 1B filling time Water feed to steam cylinder heavily calcified Level in steam cylinder and level unit do not match Carry out major servicing Internal safety chain interrupted Error code 2A 2B Alarm 2A safety chain int Error 2B safety chain int Connection to over temperature switch on steam cylinder broken or over temperature switch faulty Steam cylinder overheating over temperature switch has responded Flat band cable between control and power board interrupted or not connected Check connections or replace over temperature switch Inspect steam cylinder clean if necessary Replace over temperature switch Inspect connections connect or replace flatband cable Max Filling time exceeded alarm message only Error code 3A 3B Alarm 3A water supply Water feed blocked main water tap closed filter valve closed or blocked Water pressure too low Inlet valve does not open filter sieve in Inlet valve blocked or inlet valve faulty Feed hoses into the steam humidifier not connected or kinked Level unit not connected Float in the level unit sticking or level unit faulty Check water feed open main water tap open or clean filter valve Raise water pressure range 1 10 bar Inspect electrical connections and fuse F2 on supply module Clean f
54. uct pressure too high 21500 Pa Inspect steam hose clean if necessary and install correctly Remove adapter and clean opening with a needle Inspect ventilation settings External safety chain interrupted Error code none safety chain external A Ventilator lock open Automatic flow control has responded Safties are open Switch on ventilator ventilation system Inspect ventilator filter of ventilation system Servicing inspect system if necessary mains failure di Main failure on Unit B Inspect voltage supply to Unit B LEGEND A 7 Circuit 1 B Circuit 2 double unit 2nd DA x 00Z L AON V A9y VOL80SL ON INVHOVIG AJOSSIJLOV SNOILONYLSNI NOILV TIVLSNI Uoneoipul snjejs uejs s Joj enueyy Gunoous 9 qnoJ 0 Jojo PAZIA aq ueo SUONBIIPUI 910UJ9J 9S9U JO e JO AUY UONBIIPUI a 0uaJ euJe xe jeuondo NO UN EN ae pepnpur weJbekg ees EL ss DICH uoneinpa 9 2d SNLWS Por 21 0 WIY TV NOlld O JOJEIIPU Jed peo eAnjsisaJ XeuJ sduly Q 9p 9en pz payed sjulog AG IGHN suononujsu Bunny Alossa9oy 104 s ueiberq pepnjou 88S 3LON SIERO Joj JUN YM SISISISISISISISISIS d 0 Y LU OO AUDILUDU MMM JILON 9jeJedo 0 Jaijipiwnuy JO 19pJO ui 0 pue 9 SSOJ92 pajoeuuoo aq snw Jeduunf paul e u y pasn SI o0JJUu09 O YO OU J HLON ejs pi WNH 0 U0 9
55. y deviate please consult applicable codes for clearance requirements Right side min 36 side clearance Min 36 frontal clearance recommended see note Top 12 Min Bottom 12 Min and Left Side 2 Min LOCATION amp 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 The clearance dimensions shown in this manual 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 will not accept responsibility for installation code violations Figure 4 Wall Bracket Mounting Frontal clearance min 36 91 cm Right side clearance min 36 91 cm Left side clearance min 2 5 cm Wall TUNN 1 Location of the humidifier should be below and as close as possible to the steam distributor location If possible DO NOT locate humidifier any further than absolutely necessary from steam distributor location as controllability and net output will be reduced as a result of heat loss through the steam hose see Steam Distribution Engineering Manual 2 Where possible mount humidifier at a height convenient for servicing 3 Wall mounting bracket provided should be securely attached horizontally and open edge facin
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