water-cooled manual - Temp-Cool
Contents
1. SUCTION LINE EVAPORATOR BLOWER ACCESS p lt VALVES md CONDENSER COIL DISCHARGE LINE VALVE COMPRESSOR PIPING SCHEMATIC Water Cooled Spot Cooler 21 Three Phase Monitor Three Phase units can be equipped with monitors for compressor protection The TEMP AIR Three phase Monitor safeguards the unit against incorrect compressor rotation low voltage and or loss of power in any one of the power legs The monitor is installed in the control box and is equipped with an LED for diagnosis of an improper electrical condition see diagrams below When power is connected the compressor WILL NOT power up until the monitor start delay has been timed out If the compressor does not power up an electrical condition may need to be addressed Remove the control box cover and check the observe the LED on the phase monitor The LED signals the following GREEN BLINKING Start delay 120 sec GREEN Proper Operation RED GREEN BLINKING signals reverse phase rotation Switch any two of the power leads for the unit NOT THE MONITOR LEADS and re start RED BLINKING signals improper voltage and or phase loss Correct the power problem then re start the unit In the event of a power interruption the unit will re set to a start up condition The Phase Monitor will not allow the compressor to start until power is corrected LED NOTICE UNIT IS EQUIPPED WITH 3 PHASE POWER MONITOR WITH LED LED2. SWITCH EVAP FAN SPEED EVAP FAN SWITCH CONTACTOR I LOW VOLTAGE TRANSFORMER HARD START COMPRESSOR KIT CONTACTOR 24 LINE VOLTAGE 208 230V SINGLE PHASE COMPRESSOR WATER COOLED SPOT COOLER MODEL PWC6012 208 230 SINGLE PHASE Receptacle SINGLE PHASE Plug 5 30P 25 1 PHASE MONITOR INSTALLED CONTROL BOX Low OBSERVE LED FOR START UP VOLTAGE TERMINAL BLOCK RED LIGHT ON PANEL EVAP FAN pump EVAP FAN SAFETY CONTACTOR SWITCH HIGH PRES CUT OUT L d LOW VOLTAGE TRANSFORMER COMPRESSOR THREE PHASE CONTACTOR MONITOR 24 V Coil 4 208 230 3 PHASE COMPRESSOR LINE VOLTAGE 209 220500 WATER COOLED SPOT COOLER MODEL PWC6032 Receptacle Plug L15 30P 208 230 VOLT THREE PHASE G 26 I PHASE MONITOR INSTALLED IN CONTROL BOX LOW OBSERVE LED FOR START UP VOLTAGE TERMINAL BLOCK RED LIGHT ON PANEL EVAP FAN EVAP FAN SAFETY CONTACTOR SWITCH HIGH PRES CUT OUT HIGH VOLTAGE TRANSFORMER LOW VOLTAGE TRANSFORMER COMPRESSOR THREE PHASE CONTACTOR MONITOR 24V Coil EET 1 460 3 PHASE eme COMPRESSOR LINE VOLTAGE andi ER WATER COOLED SPOT COOLER G MODEL PWC3634 PWC6034 Receptacle Plug L16 20P 460
3. button POWER CORDS All TEMP AIR portable water cooled units come with power cords convenient connection and portability All units except the 5 ton models and 3 phase models are equipped with LCDI for added safety devices APPLICATIONS SPOT COOLER This series can be used in an open environment to cool specific objects or spots Spot Cooling is a convenient and economical way to provide air conditioning where cooling the entire space is impractical Cool air is discharged from the unit and is directed where it is needed Nozzle kits can be used to improve direction of the cooling airflow ROOM AIR CONDITIONER One feature of the water cooled model is it operates as a room air conditioner because water is used as the means for heat rejection The major convenience of water cooled air conditioning is the convenience of connecting water hoses or lines as compared to the installation of condenser air ducts used for air cooled portables A variety of hose kits are available that can be used for connecting to a water supply and drain while providing portability within the conditioned space OPERATION DESCRIPTION EVAPORATOR FAN DISCHARGE COOL FAN SPEED SWITCH THERMOSTAT GRILL AND FILTER RETURN AIR INLET DRAIN WATER IN WATER OUT FRONT VIEW SERVICE CORD All TEMP AIR water cooled series units are equipped with the standard ten foot long service cord with plug configurations and rece
4. FOR MODEL PWC6012 AN EXTENSION CORD CAN BE USED PRO VIDED IT IS RATED AT LEAST 30 AMPS 250 VOLTS WITH GROUND ING TYPE ATTACHMENT PLUG AND GROUNDING TYPE CONNECTOR LOAD FITTING FOR MODEL PWC3632_AN EXTENSION CORD MAY BEUSED PRO VIDED IT IS RATED AT LEAST 20 AMPS 250 VOLTS 3 PHASE FOR MODEL PWC6032 AN EXTENSION CORD MAY BEUSED PRO VIDED IT IS RATED AT LEAST 30 AMPS 250 VOLTS 3 PHASE FOR MODELS PWC3634 AND PWC6034 AN EXTENSION CORD CAN BE USED PROVIDED IT IS RATED AT LEAST 20 AMPS 9 600 VOLTS 3 PHASE SPECIAL NOTICE THREE PHASE OPERATION Models PWC3632 PWC3634 PWC6032 and PWC6034 All three phase AQUACOOLER models are equipped with a three phase monitor for added compressor protection The phase monitor located in the control box has multi color LED that reports status The monitor protects the compressor from reverse operation phase loss and low voltage situations Further description of the three phase monitor is located in the electrical section of the manual NOTICE DO NOT OPERATE ANY THREE PHASE UNIT BY BY PASSING THE MONITOR THIS WILL VOID THE WARRANTY ACCESSORIES DDA 6 DDA 10 2DDA 16 DDA 16 NK 1 NK 2 DEP 10 DEP 12 DEP 16 HK 2 HK 3 HK 4 HK 5 HK 6 WATER COOLED UNIT ACCESSORIES NOZZLE KIT NK 1 2X4 Inch PWC12 NK 2 2X6 Inch PWC18 24 2NK 3 2 8 PWC36 NK 3 2X 8 Inch PWC60 EVAPORATOR RETURN AIR PLENUM DEP 10 10 Inch Round PWC12 DEP 12 12 Inch
5. TEMP COOL PORTABLE COOLING SYSTEMS TEMP AIR Portable Water Cooled Spot Cooler ENGINEERING INSTALLATION AND SERVICE MANUAL 2 9 PWC12 R410A Models 0 TEMP COOL 3700 W Preserve Blvd Burnsville MN 55337 PORTABLE COOLING SYSTEMS 800 836 7432 www Temp Cool com TABLE OF CONENTS PAGE GENERAL DESCRIPTION 1 PRODUCT DATA AND SPECIFICATIONS 2 UNIT DESCRIPTION Standard 3 Applications Operation 4 Electrical eed ata lees 5 Use of Extension Cords 6 ACCESSES aiiai nhe rediere 7 12 Optloris ie eene eet 13 Installation eese 14 Thermostat ertet 15 Water Valve Adjustment 16 SERVICE Replacement Parts Procedure 17 Troubleshooting 18 Preventive 19 DIAGRAMS Unit IriteriOrz ec erre 20 Piping 21 Three Phase 22 Wiring 23 27 FORWARD This manual provides the user with basic details for the installation and operation of the TEMP AIR spot cooler It is recommended to read and fully understand the instructions outlined within this manual before operat
6. 15P 5 15P 6 20P 6 20 115 20 L16 20P 6 30 L15 30P L16 20P EER 12 9 13 8 114 134 13 4 13 4 12 0 12 0 12 0 Compressor HP 1 11 2 2 3 3 3 5 5 5 Compressor RLA 9 5 12 3 10 5 13 6 88 5 0 27 6 181 9 0 Compressor LRA 50 63 48 83 77 35 158 137 62 Evap 400 600 810 1310 1310 1310 1950 1950 1950 Evap Motor HP 1 15 1 8 1 3 1 3 1 3 1 3 1 1 1 Evap Motor Watts 200 210 350 375 375 375 550 550 550 Dimension E in 18 211 2 29 1 2 323 4 Dimension F in 51 2 6 6 6 Dimension G in 31 2 41 2 41 2 41 2 Cond Water Flow GPM at 60 F inlet 0 75 14 1 55 22 22 2 2 5 5 5 5 5 5 at 85 F inlet 3 45 6 9 9 9 15 15 15 Cond Coil Pressure Drop PSI 04 04 02 04 04 0 4 04 04 04 Water Valve Pressure Drop PSI 20 Water Valve Connection 4 3 8 MF 5 8 MF Drain Return Connection 3 8 MF 5 8 MF Condensate Pump ALL UNITS 20 Ft Lift 3 8 MF Connection On Unit DRAIN Sound Level 52 57 60 62 62 62 69 69 69 R 410A Charge Oz 14 18 16 24 24 24 52 52 52 A Height with Casters in 31 1 2 37 1 2 51 521 2 D Height Without Casters in 28 1 2 34 1 2 45 46 1 2 B Width in 20 1 8 24 1 4 28 1 4 C Depth in 13 1 8 13 16 39 Net Weight Ib 110 150 160 240 270 460 520 Shipping Weight Ib 130 170 180 270 300 500 560 Shipping Volume cu ft 9 12 23 46 gt Specifications subject to change without notice 1 Nominal capacity is total BTUH at 80 DB 67 WB return air high fan speed with 85 EWT to 95 LWT 3 GPM per Ton 2 CFM with free disch
7. Round PWC18 24 DEP 16 16 Inch Round PWC36 60 DISCHARGE DUCT ADAPTER 6 Inch Round PWC12 DDA 6 DDA 10 10 Inch Round PWC18 24 2DDA 16 12 inch Round PWC36 DDA 16 KIT HOSE HK 1 HK 2 HK 5 HK 3 HK 4 HK 6 10FT 25FT 40FT 10FT 25FT 40FT 16 Inch Round PWC60 PWC 12 18 24 PWC 12 18 24 PWC 12 18 24 PWC 36 60 PWC 36 60 PWC 36 60 ACCESSORIES DISCHARGE AIR NOZZLE KIT ASSEMBLY NK 2NK The optional discharge nozzle kits are used to direct the conditioned air to a specific tar get area By concentrating the airflow the nozzles increase the air velocity towards production lines to cool personnel or equipment In server rooms the nozzles can be used to induce airflow through the rack to remove the hot air from the area of the equip ment NK 1 for model PWC12 with 2 4 inch diameter nozzles with an approximate compressed length of 15 inches The approximate extended length is 21 inches NK 2 for models PWC18 PWC24 with 2 6 inch diameter nozzles with an approximate compressed length of 22 inches The approximate extended length is 32 inches 2NK 3 for model PWC36 with 2 8 inch diameter nozzles with an approximate compressed length of 20 inches The approximate extended length is 29 inches NK 3 for model PWC60 with 2 8 inch diameter nozzles with an approximate compressed length of 20 inches The extended length is approximately 29 inches The nozzle kits come
8. available for applications where ducted evaporator discharge is required The adapters can be easily installed on the unit without fasteners and be installed for either vertical or horizontal ducting The standard discharge grille is removed and the DDA is attached in the grill opening DDA 6 for PWC12 converts the evaporator discharge to a 6 inch diameter round duct DDA 10 for PWC18 and PWC24 converts the evaporator discharge to a 10 inch diameter round duct 2DDA 16 for PWC36 models converts the evaporator discharge to a 16 inch diameter round duct DDA 16 FOR PWC60 models converts the evaporator discharge to a 16 inch round duct When used in conjunction with the evaporator return air plenum DEP the unit can pro vide closed loop cooling to and from a given space without the influence of any outside air NOTE When DDA is installed it is recommended to set the evaporator blower speed to high to avoid evaporator freeze up Adapter Round Model Duct Size PWC12 PWC18 PWC24 PWC36 PWC60 DDA 6 6 inch Y DDA 10 10 inch 100 Equivalent Feet Maximum E S P 50 11 ACCESSORIES Hose Kit HK Hose kits are available in lengths of 10 25 and 40 feet Each hose kit allows for convenient installation of the unit while allowing for portability within the allowable space NOTICE When using these hoses in applications with water pressures e
9. chemically treated water salt water or brine is used in the condenser coil it is rec ommended that the unit be equipped with a 90 10 Cupro Nickel condenser coil ACRYLIC TREATED EVAPORATOR COIL When airborne contaminants are a problem for air conditioning applications acrylic coated evaporator coils are recommended to guard against pitting or corroding HERESITE TREATED EVAPORATOR COIL For use in chemically corrosive environments the unit can be manufactured with a Heresite coated evaporator coil for improved coil life HOT GAS BYPASS VALVE In applications where low evaporator temperatures may occur an optional hot gas by pass valve can be installed to regulate the evaporator temperature The bypass valve feeds refrigerant hot gas into the evaporator to avoid freeze ups 13 INSTALLATION INSTRUCTIONS RECEIVING INSPECTION Upon receiving your water cooled unit inspect the packaging for any damage All units are shipped on a skid and packaged in a triple wall carton for added protection In shipment some wear may occur on the packaging If the packaging is heavily damaged or broken file a claim with the freight company immediately Carefully unpack the unit and remove all wrapping materials Save all documentation and fill out the Warranty Card and mail it to TEMP AIR BEFORE INSTALLING Check the air conditioner spot cooler for any damage All TEMP AIR products are thoroughly inspected at the factory and carefully
10. that the filter be inspected on a regular bases every six weeks or more often depending on the environment The evaporator filter is located behind the return air grille and can be easily removed and cleaned The filters must be washed periodically as needed by placing them in a dishwasher or soaking them in a solution of warm water and detergent for 10 minutes Then rinsing them clean with hot water and shaking excess moisture from filter CONDENSATE PUMP Condensate pumps come standard on all water cooled models When servicing pump follow these steps 1 Make certain that the unit is disconnected from the power source before attempting to service or remove any component 2 Be sure the floats move freely Clean as necessary 3 Remove the volute and check for obstructions Clean as needed 4 Clean the tank with warm water and mild soap when mineral deposits are visible 5 Check the inlet and outlet piping Clean as necessary Be sure there are no kinks in the lines that would inhibit flow GENERAL When necessary maintenance steps outlined above are followed the air conditioner will provide long and reliable service The refrigeration and electrical circuits of the system should only be serviced by a fully qualified service technician 19 Blower High Pressure Reset Switch E Coil Water Condensate Control Pump Box Compressor PWC INTERIOR 20 EVAPORATOR COIL
11. INDICATION GREEN BLINKING START DELAY GREEN PROPER OPERATION RED GREEN BLINKING PHASE REVERSAL RED BLINKING IMPROPER LEG VOLTAGE THREE PHASE OR PHASE LOSS MONITOR START DELAY 120 SECONDS 230V 025 045 460V 025 046 CONTROL BOX LABEL 22 THERMOSTAT p LOW VOLTAGE TERMINAL BLOCK le EUMP RED LIGHT SAFETY ON PANEL SWITCH EVAP FAN SPEED RUN EVAP FAN SWITCH CAP CONTACTOR lE lccu uull2cc ece HIGH PRES CUT OUT LOW VOLTAGE TRANSFORMER d 000 2 COMPRESSOR CONTACTOR 208 230V SINGLE PHASE COMPRESSOR WATER COOLED SPOT COOLER MODELS PWC1211 PWC1811 m 115V SINGLE PHASE qu MODELS PWC2412 PWC3612 208 230V SINGLE PHASE WirePWC1211 3612 112009 23 I PHASE MONITOR INSTALLED IN CONTROL BOX LOW OBSERVE LED FOR START UP VOLTAGE TERMINAL BLOCK RED LIGHT ON PANEL EVAP FAN PUMP SWITCH SAFETY 1 CONTACTOR SWITCH HIGH PRES 1 1 1 1 I CUT OUT TRANSFORMER COMPRESSOR THREE PHASE CONTACTOR MONITOR 1 I I I I I I CO I I I I l I I 1 I LOW VOLTAGE 208 230V 3 PHASE COMPRESSOR LINE VOLTAGE 208 230V 3 60 WirePWC3632 052009 Plug L15 20P Receptacle 24 THERMOSTAT Low VOLTAGE TERMINAL BLOCK Losses PUMP RED LIGHT SAFETY ON PANEL
12. VOLT THREE PHASE 27 USEFUL INFORMATION MODEL SERIAL NUMBER DATE PURCHASED INSTALLED BY For Technical Support contact TEMP AIR at 800 836 7432 Please indicate the Model Number and Serial Number of the unit to assure proper information and service parts 3700 W Preserve Blvd Burnsville MN 55337 TEMP COOL PORTABLE COOLING SYSTEMS 800 836 7432 www Temp Cool com
13. arge 3 Sound Pressure dB at 5 feet commercial operation 4 3 8 water valve on models 12 18 24 with 3 8 flare fitting 3 4 water valve on models 36 60 with 5 8 flare fitting 5 Amps and Watts at 208 Volts 6 Time delay fuses circuit breakers are recommended Ambient operating range 65 to 105 Ax May operate to 55 if equipped with optional hot gas bypass WATER CONNECTIONS factory installed For Model 12501 WATER OUT C2 WATER IN 50 Hz MODELS AVAILABLE CONSULT FACTORY For Models 18 24 36 amp 60 C1 WATER IN C2 WATER OUT STANDARD FEATURES CABINET The unit s cabinet is constructed of 18 gauge steel with a gray polyester powder coated finish that will compliment any decor The entire cabinet is insulated with a sound absorbing insulation for cool quiet comfort All units come equipped with handles and swivel casters for portability and convenient set up ELECTRONIC THERMOSTAT All units are equipped with a non programmable electronic thermostat When power is connected to the unit the thermostat will control the unit to cool a space to the desired temperature The thermostat is also capable of controlling the fan to operate automatically when needed or continuously To protect the compressor from short cycling there is a built in 4 minute time delay in the thermostat FAN SPEED CONTROL A two position rocker switch located next to the thermostat provides the user with the option of running the evaporat
14. cedure E HIGH PRESSURE SAFETY SWITCH 1 Remove cabinets left hand side panel or right rear side panel of Model 60 2 Remove flare nut that secures capillary to the refrigeration system high pressure side A Schrader valve is located in the discharge port and allows removal without dumping the refrigerant charge 3 Remove two screws that retain high pressure switch 4 Disconnect wire leads from compressor contactor and condensate pump safety switch 5 Install new High Pressure Control reversing the procedure To gain access to compressor and compressor run capacitor remove left hand side panel TROUBLESHOOTING GUIDE The following steps and procedures are recommended for correcting the problems indicated In the event that the problem can not be corrected service may be required SERVICE SHOULD BE PERFORMED BY A QUALIFIED AIR CONDITIONING SERVICE TECHNICIAN PROBLEM UNIT DOES NOT POWER UP CAUSE Power interruption REMEDY Check LCDI on models with LCDI and reset LCDI Check external power supply making sure that the disconnect is ON Check for blown fuses or tripped circuit breakers Reset or replace if needed PROBLEM NO DISPLAY ON THERMOSTAT CAUSE Faulty thermostat or faulty transformer REMEDY Thermostat may be defective remove and replace Transformer may be defective remove and replace PROBLEM EVAPORATOR FAN RUNS BUT COMPRESSOR AND CONDENSER FAN DO NOT START CAUSE Thermostat setting may be t
15. d metal cabinet When connected to the proper source of electrical power a 24 volt thermostat controls the TEMP AIR unit to provide the desired level of comfort and cooling A wide variety of accessories and factory installed options are avail able for the TEMP AIR units allowing for improved performance and versatility NOMENCLATURE PWC 2412 PORTABLE VOLTAGE WATER COOLED SINGLE PHASE NOMINAL CAPACITY CAPACITY RATING NOMINAL CAPACITY 12 000 BTU HR 18 18 000 BTU HR DAL 24 00 BTU HR 90 000 BTU HR 60 60 000 BTU HR WARRANTY CARD It is important that the warranty card be filled out completely and returned to the factory within fourteen 14 days of installation of the unit in order to receive the benefits of the warranty Water Cooled Portable Air Conditioners SPECIFICATIONS MODEL PWC 1211 1811 2412 3612 3632 3634 6012 6032 6034 Nominal Cooling Capacity 12 000 18 000 23 950 36 100 36 100 36 100 60 100 60 100 60 100 Voltage Volts Phase at 60Hz 115 1 208 230 1 208 230 3 460 3 208 230 1 208 230 3 460 3 Unit Amps 8 1 11 3 9 9 12 0 9 3 4T 23 7 16 5 6 3 Unit Watts 5 930 1300 2100 2700 2700 2700 5000 5000 5000 In Rush Current Amps 6 70 90 86 5 99 5 88 88 160 140 140 Plug Type 5
16. ing the TEMP AIR unit As with all commercial air conditioning equipment it is recommended to have the TEMP AIR unit sized and installed by a licensed specifying engineer and contractor in accordance with all local and state codes The length of service received can be extended by following the installation and preventive maintenance instructions NOTICE In our ongoing process of continuous improvement the items and procedures described in this manual are subject to change without notice Please note model and serial number of the TEMP AIR unit when contacting the factory GENERAL DESCRIPTION The TEMP AIR portable water cooled air conditioner is designed for permanent or temporary spot cooling applications The entire air conditioning unit has been built in an attractive sheet metal cabinet equipped with heavy duty casters for mobility All TEMP AIR models come with a 10 foot power cord for electrical connection and added mobility in service These spot coolers are designed to direct air to specific areas or objects through a discharge grill located on the upper front of the unit while rejecting heat from the top of the unit The TEMP AIR water cooled models range in cooling capacities from 12 000 BTU HR to 60 050 BTU HR to satisfy most space cooling requirements The TEMP AIR spot cooler is a self contained unit with the entire cooling system fan motors and electrical components neatly arranged in a gray polyester powder coate
17. m the motor shaft and remove the motor For models size 60 loosen blower wheel shaft set screw and remove the screws securing the motor mount to the blower housing and remove motor and mount Remove the motor from the motor mount 4 Install the new motor reversing the removal procedure B THERMOSTAT NO BATTERIES REQUIRED 1 Pull up from the bottom of the thermostat to remove it from the mounting sub base by gently prying up on the face plate in the slot at the base of the thermostat Make sure small thermistor located in the bottom of the thermostat for temperature sensing is not bent or damaged 2 To remove the thermostat sub base remove the 2 mounting screws and the 3 wires red yellow green or red white black Make sure the 3 wires do not fall into the cabinet Install sub base by reversing removal procedure C TANK FULL LIGHT To replace the Condensate Alarm Light on all models disconnect the wires from the lamp and bend the tinnerman clip retaining light and pull out Install new light reversing the procedure D CONDENSATE PUMP ON ALL 5 TON UNITS OR ON UNITS WHERE THE CONDENSATE PUMP KIT HAS BEEN INSTALLED 1 Open condensate bucket access door located on lower right side panel and locate the condensate pump 2 Remove brackets securing condensate pump in base pan or condensate tank tray pan 3 Disconnect pump wire leads at Molex connectors Remove retainer clamp and tubing 4 Replace pump install by reversing pro
18. oo high REMEDY Make sure set point is lower than room temperature You should see a snowflake designating that the thermostat is calling for cooling Note there is a 4 minute time delay for the compressor CAUSE Thermostat Loose wiring REMEDY Examine the control unit for loose wires Tighten any loose connections CAUSE Condensate Alarm Check for Condensate Alarm Light REMEDY Check condensate tank and empty tank or check condensate pump and make sure pump is working properly and that there is no kink in the drain line from the pump CAUSE High Pressure Cut out Check High Pressure Cut out Switch Press Reset and clear away any obstructions to the condenser intake or condenser discharge CAUSE Low Voltage Check power supply for voltage outside the range of 106 126 volts on the 115 Volt unit and 187 253 Volts on the 208 230 Volt unit REMEDY Have power checked by electrician and repaired CAUSE Compressor contactor open or burned REMEDY Replace contactor 18 PREVENTIVE MAINTENANCE TEMP AIR Spot Coolers are designed to last a long time and to give maximum performance and reliability with minimum maintenance To prolong the life of the unit regular maintenance must be performed as specified below BLOWER MOTORS The motors on all units have permanently lubricated bearings No oiling is necessary FILTERS A clogged filter will cause the unit to operate at greatly reduced efficiencies We recommend
19. or fan in high speed or low speed CONDENSATE PUMP All units come equipped with an Automatic Condensate Pump that disposes of the condensate The pump discharges through a 3 8 male falre connection located on the back of the unit The automatic pump is capable of a 20ft lift to handle just about installation requirement CONDENSATE ALARM LIGHT On the front of all water cooled models there is a Condensate Alarm Light RED located near the thermostat For models less than 5 tons the light indicates that the condensate tank is full and needs to be emptied In the 5 ton units model 60 the light indicates a condensate pump over flow condition where the pump is either disabled or incapable of rejecting the condensate water and must be serviced FILTERS All water cooled units are equipped with washable filters at the air intakes 1 8 mesh air filters located behind the evaporator return air grill serve to filter the air before it is cooled The filters can be easily removed and cleaned HIGH PRESSURE SAFETY SWITCH Located on the back of the unit is a manual re set high pressure switch used for the protection of the compressor in the event that the condenser water supply is turned off If the condensing pressure exceeds the limit setting the cut out shuts down the compressor while the evaporator fan remains running The compressor can be re started once the condensing pressure has lowered by depressing the RESET
20. packaged If any damage is evident file a claim with the delivering carrier immediately ELECTRICAL REQUIREMENTS Check the nameplate located on the back of the unit to make certain that the proper power is available for the unit Refer to Specifications section for voltage and amperage requirements For proper NEMA receptacles refer to Electrical service plug configuration When using extension cords use the properly sized cord as specified and check cord voltage to the unit TIME DELAY FUSES CIRCUIT BREAKERS ARE RECOMMENDED WARNING OPERATING THE UNIT ON IMPROPER VOLTAGE WILL VOID THE WARRANTY ACCESSORIES Verify that all accessories are correct for the model and that they installed in accordance with all instructions START UP Install the unit in accordance with all local and state building codes and install all accessories Allow for a clearance around the unit for future maintenance and or service Level unit and lock casters when available Connect power and test the LCDI on the power cord if available Power up unit via thermostat and check for proper operation Refer to Thermostat Operation for more details 14 THERMOSTAT OPERATION FAN When the power is connected the LCD screen on the thermostat will illuminate Pressing the FAN button once will turn on the evaporator fan blower To turn the blower off push the FAN button once again COOLING MODE To operate unit for cooling push MODE button to di
21. pre assembles with the nozzles secured to a mounting plate and with edge guards By removing the unit s discharge grill one can insert the nozzle kit into the opening without the use of tools Nozzle Kits ACCESSORIES EVAPORATOR RETURN AIR PLENUM DEP Evaporator return air plenums are available for installations where it is required to duct air to the inlet of the evaporator The evaporator return air plenums allow the user to connect round duct flexible or rigid to the return air intake to reduce air noise and increase the number of options for solving difficult cooling problems The plenum attaches to the front of the unit replacing the return air grill Refer to the table below for configuration and application information DEP 10 for PWC12 transitions the return air opening to 10 inch round duct DEP 12 for PWC18 and PWC24 transitions the return opening to a 12 inch round duct DEP 16 PWC36 PWC60 transitions the return opening to a16 inch round duct NOTE When a DEP is installed it is recommended to set the evaporator blower speed to high to avoid evaporator freeze up FILTER S DEP EVAPORATOR RETURN AIR PLENUM Plenum Kit Lwc42 PWC48 PWC24 PWC36 PWC60 FILTERS Duct Flange DEP 16 1 12 30 1 LE SES EIE 1 15 X30 X1 Maximum Equivalent External Static Pressure 10 ACCESSORIES Discharge Duct Adapter DDA 2DDA Discharge duct adapters are
22. ptacle requirements as shown in this chart PWC1011 PWC1211 PWC1811 PWC2412 and PWC3612 units come with LCDI Leakage Current Detection amp Interruption devices that serve as a means of electrical protection CAUTION DO NOT USE THE LCDI AS AN ON OFF SWITCH FOR THE UNIT All 3 phase models are equipped with locking plugs for added connection reliability Re fer to the chart below for plug and receptacle details for all series models A DAMAGED LCDI POWER SUPPLY CORD MUST BE REPLACED WITH A NEW POWER SUPPLY CORD OBTAINED FROM TEMP AIR AND NOT REPAIRED UNIT MODEL PLUG CONFIGURATION RECEPTACLE 115 VOLT PWC1211 15A 125 VOLT PWC1811 NEMA 5 15P 208 230 VOLT SINGLE PHASE PWC2412 20A 250 VOLT NEMA 6 20R PWC3612 NEMA 6 20P 208 230 VOLT SINGLE PHASE 30 250 VOLT NEMA 6 50R NEMA 6 30P 208 230 VOLT 3 PHASE LUE 20A 250 VOLT NEMA L15 20R PWC3632 NEMA 115 20 208 230 VOLT 3 PHASE 30A 250 VOLT NEMAL15 30R PWC6032 NEMA L15 30P 460 VOLT 3 PHASE PWC3634 20A 460 VOLT NEMA 46 20R WC NEMA L16 20P USE OF EXTENSION CORDS CAUTION FOR MODEL PWC1211 AND PWC1811 AN EXTENSION CORD CAN BE USED PROVIDED IT IS RATED AT LEAST 15 AMPS 115 VOLTS WITH GROUNDING TYPE ATTACHMENT PLUG AND GROUNDING TYPE CONNECTOR LOAD FITTING FOR MODELS PWC2412 AND PWC3612 AN EXTENSION CORD CAN BE USED PROVIDED IT IS RATED AT LEAST 20 AMPS 250 VOLTS WITH GROUNDING TYPE ATTACHMENT PLUG AND GROUNDING TYPE CONNECTOR LOAD FITTING
23. res can cause the valve to open and close at a high rate causing a chattering condition in the water supply line In these cases it is recom mended that the water valve be adjusted 1 Disconnect the unit power 2 Remove the unit back panel and locate the water regulating valve in the lower right region of the unit 3 Locate the water valve adjustment screw At the top of the valve there is a square shaped adjustment screw 4 Turn the adjustment screw 1 4 turn re start the unit and observe operation to see if the chattering goes away Make 1 4 turn adjustments and observe the unit operation until the condition goes away 5 Close up the unit and POWER Water Valve Adjustment Screw 16 REPLACEMENT PROCEDURE FOR PARTS IT IS RECOMMENDED THAT ALL TEMP AIR UNITS BE SERVICED BY A LICENSED TECHNICIAN WARNING TO AVOID INJURY DISCONNECT UNIT POWER PRIOR TO SERVICING A FAN MOTORS 1 Remove cabinet s left side panel when looking at the front of the unit 2 Evaporator fan motor disconnect evaporator motor wires from evaporator fan contactor and fan speed rocker switch Condenser fan motor disconnect condenser motor wires from condenser fan contactor 3 For all model sizes 12 18 and 36 remove the screws securing motors and inlet ring to blower housings all screws are external and visible and remove blower wheel motor assembly Remove the blower wheel set screw and disassemble the blower wheel fro
24. splay COOL in the window Push down arrow button multiple times to lower set point to desired temperature The display will show the set point temperature for 5 seconds then it will return to room temperature display After a slight pause the fan motor and compressor will start beginning the cooling cycle Remember the set point must be lower than the room temperature for the unit to start 72 COOL OUTDOOR DAY NIGHT WAIT 4 MINUTES BEFORE RE STARTING The OUTDOOR and DAY NIGHT buttons are not used and do not effect unit opera tion This is a cooling only thermostat Select the temperature you want by pressing the A or Y buttons The word COOL and the temperature set point is displayed for 5 seconds To change display to Celsius simultaneously press the A and Y buttons Press them again to change back to Fahrenheit No batteries are required In the event of a power failure when the power is restored the thermostat will continue operating as if the power had never been off Compressor short cycle protection is built in to the thermostat A 4 minute time delay will protect the unit 15 WATER VALVE ADJUSTMENT All water cooled units come equipped with automatic pressure regulated water valves that control the condenser water flow rate The water valves will open when the system is running and will adjust the water flow rate as required by the air conditioning system In some cases water temperatu
25. xceeding 50 PSIG a water pressure reducing valve must be installed in the water supply line prior to the hose kit otherwise warranty on the hose kits will be void All hose kits have FEMALE flare connectors to match the MALE flare fittings on the units see chart below The WATER IN connector consists of a 3 4 hose barb WATER OUT and DRAIN condensate have no fitting and can be fed to a sink or permanent drain When using a hose kit avoid sharp corners hot water pipes and kinking to assure proper water flow of the supply and return lines Included with the hose kit is a sink faucet adapter Flare Conn Hose Kit IN OUT DRAIN PWC12 PWC36 PWC60 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 3 8 5 8 58 3 8 5 8 5 8 Hose Kit 12 OPTIONS In some applications units can be manufactured with optional components for added performance and longevity Below are a few of the options that are available for units Consult your distributor for pricing and availability TOWER UNITS In applications where the unit is connected to a closed loop condenser water cir cuit a unit can be built for direct water connection without a water valve HIGH PRESSURE WATER VALVE For applications where water supply pressures exceed 150 psig a high pressure water regulating valve can be installed in the unit Valves designed for use with up to 350 psig water inlet pressure are available CUPRO NICKEL CONDENSER When
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