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Kooltronic Air Conditioners are required when the equipment operating temperature must
be kept near or lower than the ambient room temperature, and/or the cabinet must be
sealed from dust, fumes, oil, corrosives and other contaminants. This Air Conditioner
utilizes a "Closed-Loop Cooling System" to ensure optimum performance of the installed
components.
Closed-Loop cooling seals the electrical enclosure from hostile elements in the
environment. Two separate circulation systems are employed. The internal system cools
and dehumidifies the air inside the cabinet, totally isolating the sensitive electronics and
other components from the environment. The external system uses circulating ambient
air or water to discharge the heat removed from the electronics. The heat is dissipated
from the enclosure by means of the vapor compression refrigeration cycle. This takes
place in a hermetically-sealed refrigeration system, utilizing either an air-cooled or water-
cooled condenser heat exchanger. The warm air inside the enclosure is drawn through
the evaporator coil where it is cooled, dehumidified and returned.
Any enclosure moisture accumulated on the evaporator coil is collected in the condensate
tray and released to the ambient air through the drain tube or the condensate evaporator.
The heat removed through the evaporator coil is transferred by the compressed refrigerant
to the condenser coil. Ambient air or water is then passed through the condenser coil,
where it absorbs the heat and is then discharged to the environment.
The cool air discharge temperature is regulated by the capacity control (hot gas
bypass) valve. The unit is equipped with a Low Temperature Thermostat to prevent
over-cooling.In applications having frequent voluntary heat load fluctuations, an
optional Compressor Short Cycle Protector is recommended.

V. Principles of Operation

Summary of Contents for K2A4C2WNP28

Page 1: ...S IMPORTANT THAT THIS MANUAL BE READ AND UNDERSTOOD THOROUGHLY KOOLTRONIC INC 30 Pennington Hopewell Road Pennington NJ 08534 609 466 3400 FAX 609 466 1114 www kooltronic com TRIMLINE WNP28 SERIES 900...

Page 2: ...age of the Kooltronic website I Introduction Kooltronic Air Conditioners are designed to provide a cool dehumidified environment for your electronic components There are models to fit virtually all si...

Page 3: ...prior to operating in order to allow the compressor oil to drain to the compressor sump area CAUTION 3 Before operating this unit all electrical wiring must be checked to assure the proper connection...

Page 4: ...Final Assy Number MFG Order Number e Before operating be sure that the power source matches these requirements y Use of incorrect type or amount of refrigerant will adversely affect performance and ma...

Page 5: ...ession refrigeration cycle This takes place in a hermetically sealed refrigeration system utilizing either an air cooled or water cooled condenser heat exchanger The warm air inside the enclosure is d...

Page 6: ...blower will be delayed until the system pressures rise 10 Operate the air conditioner for approximately ten 10 minutes During this period no unusual noise or vibration should be evident Both the evap...

Page 7: ...e top cut out in your cabinet Mount the unit to the M TAB by sliding the 4 studs on the side panel into the 4 slots on the M TAB After unit is in place tighten 2 screws at bottom of unit These two scr...

Page 8: ...ATER INLET 3 8 18 NPT MALE FITTING DRAIN 63 16 1 4 01 101 9 28 50 723 9 THERMOSTAT ADJUSTMENT 1 1 2 Drawings and Dimensions WNP28 SERIES Other drain outlets are available contact KOOLTRONIC Dimensions...

Page 9: ...ater temperature 115V 60 Hz and 230V 60 Hz models also perform at full capacity when operated at 100V 50 Hz or 200V 50 Hz respectively No transformer is required KA4C2WNP28 2000 1 0 115 100 60 50 13 0...

Page 10: ...nd the compressor will continue to cycle on and off Continued operation under these conditions will cause damage shorten compressor life and void the warranty A Filter Removal and Service Kooltronic A...

Page 11: ...ypass valve fails it is strongly recommended that the Air Conditioner be returned to Kooltronic for service D Refrigerant Loss Kooltronic Air Conditioners are subjected to a series of tests to detect...

Page 12: ...applicable Failed Compressor Replace Compressor Ice on Evaporator Coil Insufficient Heat Load or Unit Contact Kooltronic Oversized for Application Failed Evaporator Blower Replace Evaporator Blower Mo...

Page 13: ...nal customer Purchase Order number and date Date product was received by customer Number of parts to be returned Product description model and serial number Reason for return Action requested Contact...

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