Selecting the Heat or Cool Mode
2-Pipe Operation
10
HEAT
indicates the temperature that the room
has to fall to before the heating source ener-
gizes. If the water supply is cold, this screen
and heating would be locked out.
COOL
indicates the temperature that the room
has to rise to before the cooling source ener-
gizes. If the water supply is hot, this screen
and cooling would be locked out.
If step #6 = 3, this screen will not appear.
AUTO
will automatically select heat or cool
based on the room temperature demand.
If step #6 = 3, only heat or cool will appear.
Program On
will activate the stored timer op-
eration for the heating and cooling setpoints.
OFF
indicates both heating and cooling are
turned off.
Note
: If the water temperature is changed during
the year, the thermostat will then automatically
lock out the incorrect mode.
Press
MODE
Press
MODE
Press
Press
MODE
MODE
Fan
Fan
Fan
Fan
Heating and/or Cooling
Step #6 = 3 in Advanced Setup (page 19), and a changeover sensor is used.
Step #6 = 4 or 5 in Advanced Setup (page 19).
Operation is the same as a 4-pipe system (page 7).
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