43
Option 44 — Super Comfort Heat
This option is only available on heat pump units HP (HP, H2, hh, and h2) when
Option 41 (Variable Speed Blower) is set to On and the system has a valid OAT
sensor.
OF (Off) -- Comfort Heat is off
On -- Comfort Heat feature is on.
If the outdoor air temperature is between 12 to 40_F(--11to4_C) and the
compressor is running in heating, then the fan output is turned off. This will signal
the variable speed blower to reduce the air speed. The fan output is turned off even
if the user has the fan selection set to continuous fan. The fan output will be turned
back on in this temperature range if the maximum capacity of auxiliary heat is on
due to system demand (auxiliary heat on in response to a defrost signal shouldn’t
cause the fan to turn back on).
If the outdoor air temperature is below 12_F/--11_C and there is sufficient demand
for the equipment to be on, then the fan output is turned back on and the W/W1
output is energized. In a two speed unit the Y/Y2 output should be energized in
addition to the W/W1 output. This logic does not apply to a Hybrid Heat system. In
the unlikely event that the installer has selected a heat pump lockout temperature
(Option 09) of 5_F/--15_C in a Hybrid Heat system and the comfort heat feature is
on, then the comfort heat feature will turn the W/W1 on and the compressors off
when the outdoor air temperature drops below 12_F/--11_C instead of at the lower
temperature of 5_F/--15_C.
NOTE: All temperature boundaries have a +/-- 2_ hysteresis
Factory default is OF (Off).
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