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PRO TH3110D / TH3210D
3
About your new thermostat
Temperature adjustment
(see page 7)
Fan Switch (see page 6)
On: Fan runs continuously.
Auto: Fan runs only when heating or
cooling system is on.
Quick reference to controls
System switch (see page 5)
• Cool: Cooling system control.
• Off: All systems off.
• Heat: Heating system control.
• Em Heat: Emergency & Auxiliary
Heat control. Compressor is locked
out. (Select models only.)
Digital display screen