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Fig. 13—Mounting thermostat on subbase.
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!
CAUTION
During cold weather, some heat pumps will re-
quire that crankcase heater be energized several
hours before operating heat pump. Refer to
manufacturer’s recommendations.
HEATING
NOTE: When heating setting is changed, thermostat will
wait up to 5 minutes before turning on the heating
equipment. This delay protects the compressor.
Move the system switch to HEAT and the fan switch to
AUTO. Press WARMER key until the setting is about 10°
F [6° C] above room temperature. Heating should start and
the fan should run (there may be a delay of 5-10 minutes
before heat turns on). Press COOLER key until the setting
is about 10° F [6° C] below room temperature. The heating
equipment should shut off, followed by the fan.
NOTE: On an AUTO changeover thermostat, the cooling
temperature must be set at least 3° F [2° C] above the
heating temperature, or display will flash.
COOLING
CAUTION
Do not operate cooling if outdoor temperature is
below 50° F [10° C]. Refer to manufacturer’s
recommendations.
NOTE: When cooling setting is changed, thermostat will
wait up to five minutes before turning on the cooling
equipment. This delay protects the compressor.
Move the system switch to COOL and the fan switch to
AUTO. Press COOLER key until the setting is about 10°
F [6° C] below room temperature. The cooling equipment
and fan should start. Press WARMER key until the setting
is about 10° F [6° C] above room temperature. The cooling
equipment and fan should stop.
NOTE: On an AUTO changeover thermostat, the heating
temperature must be set at least 3° F [2° C] below the
cooling temperature, or display will flash.
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T8611M
INSTALLATION • CHECKOUT