Honeywell PRO TH4110B - System Switch (Heat;Cool)

PRO TH41 lOB Programmable Thermostat
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The SYSTEMswitch can be set to con-
trol your heating or cooling system,
depending on the season.
• Heat:Thermostat controls only
the heating system.
• Cool: Thermostat controls only
the cooling system.
• Off: Heating and cooling
systems are off.
/
Set SYSTEMswitch to control the heating or
cooling system.
CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible
compressor damage, do not operate
cooling system when outdoor
temperature is below 50°F (10°C).