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14
SERVICE
IO-DV070
IO-DV070
Figure 13
:
Refrigeration System of DV070 Dehumidifier
Service Parts List for DV070
Ventilating Dehumidifier
Part No.
Description
DVP-4034804 Transformer, 120/24VAC, 40 VA
DVP-4034805 Defrost Switch
DVP-4034806 Compressor Relay, SPST, 24VAC, 30A
Service
i
WARNING!
Servicing the DV070 Dehumidifier with its high pressure
refrigerant system and high voltage circuitry presents
a health hazard which could result in death, serious
bodily injury, and/or property damage. Call your HVAC
contractor for servicing or repair of this equipment.
Technical Description of
Dehumidifier Operation
The DV070 uses a refrigeration system similar to an air
conditioner's to remove heat and moisture from incom-
ing air, and add heat to the supply air that is discharged
from the dehumidifier. Hot, high-pressure refrigerant
gas is routed from the compressor to the condenser coil.
The refrigerant is cooled and condensed by giving up its
heat to the supply air being discharged from the unit.
The refrigerant liquid then passes through a strainer and
Warranty
A consumer warranty certification is included at the
end of the manual. Please read it before any repair is
initiated. If a warranty repair is required, call the install-
ing contractor or the factory at 1-855-239-2665 for
warranty claim authorization and technical assistance.
capillary tubing which causes the refrigerant pressure
and temperature to drop. It next enters the evaporator
coil where it absorbs heat from the incoming air and
evaporates. The evaporator operates in a flooded condi-
tion, which means that all the evaporator tubes contain
liquid refrigerant during normal operation. A flooded
evaporator should maintain nearly constant pressure and
temperature across the entire coil, from inlet to outlet.
The mixture of gas and liquid refrigerant enters the
accumulator after leaving the evaporator coil.
The accumulator prevents any liquid refrigerant from
reaching the compressor. The compressor evacuates
the cool refrigerant gas from the accumulator and
compresses it to a high pressure and temperature.