watercooled service manual
Contents
1. CIRCUIT 22 z CONTROL 208 230 24V TRANS 24 V TO THERMOSTAT gt gt CONTACTOR SUPPLY 208 230 V OPTIONAL MOTOR AND CAPACITOR FROM WIRING 1 CAPACITOR y BLOWER 9 MOTOR BLOWER MOTOR BLOWER MOTOR RELA Y DANGER ELECTRICAL SHOCK HAZARD WPC WHC 36 60 575 60 3 COMPRESSOR D j CONTROL CONTROL 575 24 TRANS 24 V TO THERMOSTAT gt G gt Y CONTACTOR SUPPLY 575 V 3 GND OPTIONAL MOTOR AND CAPACITOR 4 FROM WIRING Ll Y FROM MOTOR RELAY CAPACITOR y BLOWER 5 MOTOR BLOWER MOTOR BLOWER MOTOR RELAY DANGER ELECTRICAL SHOCK HAZARD WHC 90 120 208 230 60 3 460 60 3 575 60 3 YOLOW YOLOW 93395 NOTI3A 9334 H9IH YOLOVLNOO 062 800 TJOH1NOOS 100 901 11915 ANOS 5 5 09 S2S 2 09 097 IVLSOWYSHL 09 0 802 OLA ve YOLOVLNOO2. Water Cooled by AITONS Air Conditioners Installation Operation And Maintenance Manual WPC WHC WSC INSTALLATION WHC Series LOCATING THE UNIT In locating the unit consideration should be given to space requirements floor strength water supply power supply sewer for condensate and condensate drain In addition to space required for the unit consideration should be given for service clearance and maintenance WSC PRE INSTALLATION The water cooled system consists of a condensing unit designed for installation with refrigerant lines and matching evaporator coil Before beginning the installation make certain you have received the proper system components for your requirements ELECTRICAL CONNECTIONS All units are wired at the factory and require connection of the power supply to the unit control box Power at the unit must be within 10 of rated voltage both during normal Operation and starting periods ALL WIRING SHOULD COMPLY WITH LOCAL AND NATIONAL CODES THE COMPRESSOR AND FAN MOTORS If applicable ARE INTERNALLY PROTECTED WATER VALVE The Water Regulating Valve is adjustable by means of stem top of valve to control refrigerant system head pressure Counter clockwise rotation of the handle increases head pressure and clockwise rotation decreases the head pressure It will be necessary to field adjust the valve because of variance in water pressure flow
3. DANGER ELECTRICAL SHOCK HAZARD WSC 36 60 575 60 3 SOLID STATE LOCKOUT COMPRESSOR CONTROL 2 LOGIC CIRCUIT 24 V TO THERMOSTAT gt gt CONTACTOR SUPPLY DANGER ELECTRICAL SHOCK HAZARD CSN NdD aey 9 15 5 UIt T T 11 0 4 SA 2 1 NOILUWNSNOD ISM 9 dddM IdM Cite WPCIWHCIWSC 12 THRU 120 5 by Al Parts Listing for C0 9 GASIASY 10 71 80 600003 20004 0004 900044 SOOOWS LLOOWS S OCLOHM OdM c00004 10094 F00084 9000834 VOOOWS OLOOWS OZLOHM DdM 000O3 020004 700085 50009 9000 1 6000 1 S 06OHAVOdA 910099 000O3 ZL0004 F00084 S00083J 7000 1 8000 1 06OHAVOdA 910099 200003 20004 700084 SOOOWS sd S O9OHM OdM OSM 910099 600003 10054 700083 70005 09OHWOd A OSM 910099 000004 600024 700085 7000 14 L O9DHWOdM OSM 910099 100003 800094 700085 70004 00024 600003 0004 200084 20001 1 VVOHM OdM 00024 0000 200024 200084 0004 FPOHAVOdA 00024 600003 00004 200084 2000 9 OHAVOdA OSM 0002
4. Power Off Check main circuit fuses and wiring a Faulty unit wiring b Loose wiring connections a Check wiring diagram b Tighten terminals and wiring connections 24 volt supply faulty Check transformer Thermostat defective Replace Fan operates but compressor will not start Incorrect thermostat setting Adjust thermostat Thermostat defective Replace Compressor overloads or thermostat open Check reasons for overload open excessive heat High or low pressure control tripped Re set and check water regulating valve and water supply If switch is defective then replace Contactor faulty Replace Compressor motor hums but will not start Low or incorrect voltage Check with power company for required voltage Faulty capacitor Replace Faulty Hard Start Kit Replace Seized compressor Replace Fan motor starts but cuts off on internal protector Low voltage Check with power company Defective bearings Replace motor Internal fault Replace motor High amp draw Replace motor PROBLEM POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY PROBLEM POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY High Suction Pressure Water supply inadequate Check water regulating valve setting or water supply Excessive load on unit High air flow high inlet temperature as in initial start or pull do
5. Turn the line voltage to the condensing unit 7 Set the thermostat to 15 C The compressor contactor should close and the compressor starts to work The furnace blower should start and run on the cooling speed 8 With the unit operating close all the doors windows and openings to the house Set the thermostat to the desired setting usually 22 C allow the unit to condition the house Don t be alarmed if the unit runs several hours or even a full day to reduce the heat and moisture in the house on the initial run This is normal for any air conditioning system SPECIAL NOTE In the event of a compressor motor failure or burnout normally cleaning the metering device installing a suction line filter drier will be sufficient to remove contaminates resulting from the failure After a few days of operation the drier core can be removed from the suction line filter w WSC Series PROBLEM POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY PROBLEM POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY PROBLEM POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY PROBLEM POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY POSSIBLE CAUSE REMEDY GENERAL SERVICE GUIDE Fan and compressor will not start
6. O HOLIMS dH YOLOW 5 9 1 O390O1 341 41105 YOLOVLINOD 84 lt N lt L lt L CD lt 4 H LLI LU DANGER WPC 90 120 208 230 60 3 460 60 3 575 60 3 333 HOIH YOLOW YOLOW 93395 NOTI3A YOLOVLNOO 062 800 TJOH1NOOS 100 901 11915 ANOS 5 5 09 S2S 2 09 097 IVLSOWYSHL 09 0 802 OLA ve O HOLIANS dH YOLON va YOSSaudWOO 9 1 O390O1 341 41105 YOLOVLINOD 84 lt N lt lt L CD lt 4 H O LLI LU DANGER 10 WSC 12 60 208 230 60 1 COMPRESSOR SOLID STATE 24 V TO THERMOSTAT gt CONTACTOR SUPPLY 208 230 V 18 lt lt DANGER ELECTRICAL SHOCK HAZARD WSC 36 60 208 230 60 3 SOLID STATE COMPRESSOR D 3 1 24V TO THERMOSTAT gt CONTACTOR SUPPLY 208 230 V 30
7. rates and temperature encountered Fasten a service head pressure gauge to the service fitting on the compressor discharge line to determine the head pressure The optimum condition is 230 p s i a WPC Series by AITONS OPERATION OF SYSTEM System is controlled by a room thermostat Place system switch on the thermostat to the cool position Place the fan switch to the on position for continuous fan operation or the auto position to cycle the blower on and off with the compressor CHECK OUT OF UNIT 1 Turn the thermostat Heat Cool switch to off Turn the thermostat fan switch to auto 2 Turn all power on except line voltage 230v to condensing unit 3 Turn fan switch at thermostat to on blower should run on cooling speed Reset to auto blower should turn off 4 Set the room thermostat above 30 C turn selector switch to cool Move thermostat below indicated room temperature the blower should run cooling speed and a click of the compressor contactor should be heard in the condensing unit If the contactor cannot be heard check visually that the contacts are closed 5 Again set room temperature above 30 C Turn selector switch to heat Furnace should start to heat When plenum temperature reaches fan on setting the blower should run at heating speed turn thermostat down below 15 C to shut off heat After a few minutes the blower should turn off
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9. 4 100003 900024 200084 0004 OSM 00024 100003 800024 00083 LOOOWA OSOHWOdM OSM 00024 0000 000934 00083 LOOOWA PZOHWOdM OSM 00024 0000 200024 00083 LOOOWA SLOHM OdM 00024 100003 269 0008 00083 00014 SIOHAVOdA 00024 0000 00024 00083 000114 CLOHM OdM 010094 0 0099 200094 LOOOMA 200094 LOOOMA 2100099 dNODYOLIOWdWD YOLOW YOLOVLNOD ossaydWoo YOLOW 13dqow lt 0 SA 2HA O dAl 44 WHIV LNOAWOD JOA 519 Z by AITONS www comfort aire com LIMITED WARRANTY Water Cooled Equipment AITONS EQUIPMENT INC warrants for one year its products to be free from defects in material and workmanship when installed and operated pursuant to manufacturers instructions In addition the compressor is warranted for an additional 4 years If upon examination by AITONS EQUIPMENT INC a part is deemed to be defective under this warranty we will repair or replace that part F O B Guelph Ontario free of charge exclusive of labour This warranty is to the exclusion of any statutory warranty expressed or implied The PURCHASER FILLS IN AND RETAINS THIS WARRANTY The Serial Number of your unit is recorded on computer when shipped MODEL SERIAL number DATE OF INSTALLATION 5 NAME AITONS EQUIPMENTINC Guelph Ontario www
10. wn Defective compressor If head pressure is low or normal at this condition compressor may be defective Overcharge of refrigerant Usually associated with high discharge pressure Remove excess gas High Discharge Pressure Water supply to condenser inadequate a Adjust or if defective replace water regulating valve b Water pressure low or supply lines too small c Water temperature too high d Condenser surface fouled Recognized by low temperature water rise through condenser Overcharge of refrigerant Remove refrigerant and balance to normal Non condensibles in system Remove refrigerant and evacuate system WPC WHC 12 60 208 230 60 1 COMPRESSOR SOLID STATE LOCKOUT CONTROL LOGIC CIRCUIT Et Ze z CONTROL 208 230 24V TRANS 24 V TO THERMOSTAT gt gt Y CONTACTOR SUPPLY 208 230 V 18 lt lt GND 7 OPTIONAL MOTOR AND CAPACITOR FROM WIRING gt Ll FROM MOTOR Y RELAY CAPACITOR Y BLOWER MOTOR BLOWER MOTOR BLOWER MOTOR RELA Y DANGER ELECTRICAL SHOCK HAZARD WPC WHC 36 60 208 230 60 3 COMPRESSOR D a CONTROL 2
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