Operating instructions

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designed, you have the freedom of selecting the MODE
of operation for each zone independently. To change
from one zone to another, simultaneously depress the
FAN and MODE pushbuttons. Each time you depress
and release these pushbuttons, the indicator will change
the zone data displayed. To program each zone,
simply repeat the programming steps shown in the
operation section of this manual. Please note: The
Comfort Control Center will prevent operating FUR-
NACE and COOL or FURNACE and HEAT PUMP at
the same time.
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J. STAGE CONTROL OPERATION
If the vehicle is equipped with a Duo-Therm Dual
Basement Air Conditioner or a Dual Basement Heat
Pump, you have an air conditioning system that is
designed to optimize comfort and running efficiencies.
(Two units wired in series within one compartment).
This is accomplished as long as the required electrical
power is available, by providing an on-demand second-
ary stage of operation. (NOTE: The primary stage will
continue to operate even if there isn't enough electrical
power available to run the second stage.) The Comfort
Control Center simplifies this operation by allowing you
to set the primary temperature set-point and the differ-
ential temperature set-point which activates the sec-
ondary stage. After turning on your Comfort Control
Center, perform the following steps to set and activate
the stage control operation.
1) Momentarily depress the MODE pushbutton until
the desired mode of operation is selected. (FAN
ONLY, COOL, HEAT PUMP)
2) Momentarily depress the FAN pushbutton until the desired
fan speed indicator is illuminated (LOW, HIGH, AUTO)
3) Momentarily depress the UP and DN pushbutton until the
desired room temperature set-point is displayed.
This completes the setup for the primary stage of the Dual
Basement Air Conditioner or Dual Basement Heat Pump.
Next, you will setup the secondary stage.
TO SET UP THE SECONDARY STAGE:
1) Simultaneously depress and release the FAN and MODE
pushbuttons until the STAGE indicator on the LCD is
illuminated.
2) Momentarily depress the MODE pushbutton until the
desired mode of operation for the second stage is
selected. (FAN ONLY, COOL, HEAT PUMP). Nor-
mally, the mode of operation is the same as the primary
stage.
3) Momentarily depress the FAN pushbutton until the
desired fan speed indicator is illuminated. (LOW, HIGH,
AUTO)
4) Momentarily depress the UP or DN pushbutton to set the
desired differential temperature setpoint (0°F to 10°F).
The secondary stage will run once the actual room
temperature reaches the differential temperature
setpoint. Example: Desired room temperature setpoint
for the primary stage in the COOL MODE is set at 72°F;
differential temperature set-