27
OPERATING THEORY
Dehumidification:
When the Dehumidify
mode is set to On, the supply air temperature
must be In-range to energize the electric
heaters.
• When the humidity is 2 percent or more
above humidity setpoint, the controller
(energizes) the heaters.
5
Controller energizes electric heaters for heat,
defrost and dehumidification:
Heat mode (compressor off):
If
supply air temperature is too low, heaters pulse
on and off on a 60 second duty cycle.
Defrost mode:
Heaters are on until
evaporator coil temperature increases to
terminate defrost.
Содержание MP-4000
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