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Cool
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OWNER'S MANUAL
MODEL P474-0140
Test Operation
Turn on the power to the Heat Pump.
On the thermostat, slide the Mode Switch
to HEAT. Press the UP or DOWN button
until the set temperature is 10 degrees above
room temperature. The HVAC unit should
energize in the heating mode. Note: You
may need to wait up to five minutes for
heating to energize due to the compressor
lockout feature. There is a two minute min-
imum run-time for first stage heating.
On the thermostat, slide the Aux Heat
Switch to the NORMAL position. If the
thermostat is system powered the Aux Heat
indicator will illuminate indicating that the
thermostat has energized Aux Heat (page 7).
TWO STAGE OPERATION - The 2nd stage
of heat (auxiliary heat) is turned on when
the room temperature is equal to or less
than: the setpoint minus the 1st stage
deadband (one degree, non-adjustable),
minus the 2nd stage deadband (two
degrees, non-adjustable).
Heat or Cool
Setpoint
Deadband Deadband
db 1db 2
1st Stage
turn on
2nd Stage
turn on
Heating
(non-adj. 2 )
Deadband
db 1
1st Stage
turn on
Cooling
(non-adj. 1 ) (non-adj. 1 )
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