HEAT
indicates the temperature
the room has to reach before the
heating source energizes. If the
water supply is cold, this screen
and heating would be locked out.
COOL
indicates the temperature
the room has to reach before the
cooling source energizes. If the
water supply is hot, this screen
and cooling would be locked out.
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OFF
Press
MODE
Press
Press
Press
MODE
MODE
MODE
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occupied 1
Note:
If the water temperature is
changed during the year, the ther-
mostat will then automatically lock
out the incorrect mode.
Heating and/or Cooling
Step #6 = 3 in Advanced Setup (page 19), and the
accessory changeover sensor (ACC-SENFC) is used.
Step #6 = 4 or 5 in Advanced Setup (page 19).
Operation is the same as a 4-pipe system (page 7).
Selecting the Heat or Cool Mode
2-Pipe Operation
Program On
will activate the
stored timer operation for the
heating and cooling setpoints.
If step #6 = 3, only
heat or cool will appear.
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If step #6 = 3, this
screen will not appear.
AUTO
will automatically select
heat or cool based on the room
temperature demand.
OFF
indicates both heating and
cooling are turned off.
