20
T
HERMOSTAT
F
EATURES
Number of Heating Stages: 3
Number of Cooling Stages: 2
Changeover: Automatic or Manual
Clean Filter Timer
Batteries: Not required.
IMPORTANT—
Always allow the system at least
five minutes to respond to any changes in the
settings. The thermostat has been programmed
to start the heating or cooling cycle in stages.
Note:
This electronic thermostat cannot be set
closer than 3º between heating and cooling.
S
ETTING
THE
MODE
Push and release the MODE button to select
the desired mode of operation. Each time the
MODE button is pushed and released, the ther-
mostat will select a different mode. The different
modes are as follows (in sequence):
OFF: System will not operate
COOL: Cooling operation only
HEAT: Heating Operation Only
AUTO: Heating or cooling operation
E-HEAT: Heating with auxiliary heat only
H
EAT
When the unit is in heating mode, you can review the heating setpoint by momentarily pressing either the ▲or
▼ button. You will see your current setpoint displayed along with the words DESIRED TEMP illuminated on the
display. To adjust the setpoint, press and hold either the ▲or ▼ button until the desired temperature is displayed.
The display will read HEAT and ENERGY SAVINGS when the system is operating in either the first or second stage
heating mode. The ENERGY SAVINGS on the display is not illuminated when auxiliary heat is being used. Note: If
your system is not equipped with auxiliary heat, the thermostat may still indicate a request for auxiliary heat.
C
OOL
When the unit is in cooling mode, you can review the cooling setpoint by momentarily pressing either the ▲or
▼ button. You will see your current setpoint displayed along with the words DESIRED TEMP illuminated on the
display. To adjust the setpoint, press and hold either the ▲or ▼ button until the desired temperature is displayed.
Note: As the cooling setpoint is adjusted, the words DESIRED TEMP will be displayed. The words COOL and
ENERGY SAVINGS will be displayed when the system is operating in the cooling mode. At the end of the cooling
cycle, the fan will remain on for approximately 30 seconds, unless “Continuous Fan” has been selected.
E
MERGENCY
H
EAT
Emergency heat mode uses only the auxiliary heat to maintain comfort. This should only be used if your
WaterFurnace unit is inoperable. To enter emergency heat mode, press the MODE button until E-HEAT is dis-
played.
S
ETTING
THE
F
AN
To select continuous fan operation, press and release the FAN button and the display will show the words FAN ON.
To select fan operation only when the unit is heating or cooling, press the FAN button until AUTO appears.
TA32U02 Thermostat
THERMOSTAT OPERATION
