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XVI. OPERATION
COOLING MODE
With thermostat in the cool mode, fan auto and the room tem-
perature higher than the thermostat setting:
A. Indoor blower contactor is energized through thermostat
contact (G).
B. Compressor contactors are energized through thermostat
contacts (Y1) & (Y2) and high pressure controls.
C. Economizer enthalpy control (if installed) controls operation
of first-stage cooling and positions fresh air damper to main-
tain mixed air temperature. Second-stage cooling operates
normally as required by second stage of thermostats.
D
. The system will continue in cooling operation as long as all
safety controls are closed, until the thermostat is satisfied.
HEATING MODE
With the thermostat in heat mode, fan on auto, and the room
temperature lower than the thermostat setting, the Indoor
blower contactor is energized through thermostat contact (G).
ONLY ELECTRIC HEATER KITS SUPPLIED BY THIS MAN-
UFACTURER AS DESCRIBED IN THIS PUBLICATION HAVE
BEEN DESIGNED, TESTED, AND EVALUATED FOR USE
WITH THIS UNIT. USE OF ANY OTHER MANUFACTURED
ELECTRIC HEATERS INSTALLED WITHIN THIS UNIT MAY
CAUSE HAZARDOUS CONDITIONS RESULTING IN PROP-
ERTY DAMAGE, FIRE, BODILY INJURY OR DEATH.
In the heating mode, the thermostat will energize one or more
supplementary heaters.
XVII. MISCELLANEOUS
R
EPLACEMENT PARTS
C
ontact your local distributor for a complete parts list.
.
WARNING
!
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