Friedrich R410A Air Conditioner User Manual


 
14
VPAK ELECTRONIC CONTROL FEATURES
Thermostat Compatibility:
The VPAK Electronic Control is compatible with
Friedrich RT4 and RT5 Thermostats.
The VPAK Electronic control is also compatible
with most standard Single Stage Heat/Cool
Thermostats.
NOTE: Field supplied Thermostats MUST
energize the fan circuit on a call for Heating
or Cooling, and (when used with a Heat
Pump Unit) MUST energize the “B” terminal
in Heating in order for the unit to function
correctly.
Compressor Time Delay:
The Electronic control is equipped with a
random (180 to 240 seconds) Compressor
time delay that is initiated every time the
compressor cycles “Off.” The “delay on break”
timer is initiated by the following actions:
(1) Satisfying the temperature set point
(2) Changing mode to fan only
(3) Turning the unit off
(4) Restoring power after a failure
Note: The Compressor Time Delay feature is
disabled during “Test Mode” operation.
Fan delay:
The Electronic Control is equipped with a
feature that will start the fan 5 seconds EARLY
(i.e. before compressor or heater) when unit
cycles “ON.” When the unit cycles “OFF” the
fan will DELAY for 30 seconds in Cooling and
15 seconds in Heating.
Note: the fan delay is disabled during Test
Mode operation.
Emergency Heat:
The Electronic Control is equipped with a
feature that allows servicer/end user to switch
to electric heat operation when the compressor
fails during the heating season, (See DIP
switch position 7) until the compressor can be
replaced.