Carrier 33CSSN3-FC, Owner'S Manual

Page: 9 / 26

Selecting the Heat or Cool Mode
2-Pipe Operation
8
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 #4 = 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.
Note
: If the water temperature is changed during
the year, the thermostat will then automatically
lock out the incorrect mode.
Press
MODE
Press
Press
MODE
MODE
Fan
Fan
Fan
Heating and/or Cooling
Step #4 = 3 in Advanced Setup (page 11), and a changeover sensor is used.
Step #4 = 4 or 5 in Advanced Setup (page 11).
Operation is the same as a 4-pipe system (page 5).