Sequence of Operation
Mode Button Operation
Pressing the Mode button selects the
operation of the thermostat to be
either Heating, Cooling, or Off. The
thermostat must be configured for
heat/cool/fan operation in order for
the cooling operation to be available.
Heating Operation
Heating is available when the Mode is set
to Heat. To change the heat temperature
setting, push the or button to select
a preferred temperature setting for the
current schedule time period. The Heat
On symbol is shown on the display when
the thermostat is heating.
To change the temperatures for the
other time periods, enter the Set Temp
menu by pressing both the
and
buttons together, press Menu to locate
the Set Temp menu, and press PRGM to
enter the menu.
Hydronic Systems
When operating a hydronic
radiant floor, baseboard or radiator
heating system, the thermostat uses
Pulse Width Modulation (PWM)
operation and cycles the heat on and
off /- 1.5°F (1°C) of the
temperature setting.
Forced Air Systems
When operating a forced air heating
system, the thermostat uses a
differential of +/- 0.7°F (0.4°C).
Temperature Sensor Location
The thermostat can operate the
heating system based upon either an air
temperature sensor, a floor temperature
sensor, or a combination of both the air
and floor temperature sensors together.
Air Temperature Only
If there is only an air temperature
sensor (no floor sensor), the thermostat
maintains the desired air temperature.
Floor Temperature Only
If the air sensor has been disabled,
the thermostat will only maintain floor
temperature and ignore air temperature.
This operation is recommended for areas
such as bathrooms to ensure that tile
floors are warm to the touch.
Floor and Air Temperature
If the air sensor is turned on and a floor
sensor is connected, the thermostat will
maintain the desired air temperature as
well as a minimum floor temperature.
This operation is recommended for areas
with large windows that allow the sun
to shine into a room and keep it warm
without the need for heat. This can
allow the floors to cool off during the
afternoon. When the sun goes down, it
can take a long time for the floors to get
warm again. This may cause the room to
cool off too much in the early evening.
A floor minimum setting can help with
this condition by maintaining a floor
minimum temperature. Keep in mind the
floor minimum temperature will override
the air temperature, and if set too high,
may overheat the room.
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