HP THERMOSTAT
24 VAC HOT D
24 VAC COM
HEAT STAGE 2
COOL/HEAT
STAGE 1
INDOORFAN F_
RVS COOLING
EMERGENCY
HEAT
TYPICAL HEAT
FAN COIL PUMP
* IF AVAILABLE
A02325
Fig. 12--Generic Wiring Diagram
(See Thermostat Installation Instructions
for wiring specific unit combinations)
©
ODT
LEGEND
24-V FACTORY WIRING
24-V FIELD WIRING
FIELD SPLICE CONNECTION
OUTDOOR THERMOSTAT
EMERGENCY HEAT RELAY
SUPPLEMENTAL HEAT RELAY
A97413
CONTACTOR 24VAC COM
o--000 +
OFF;NO 24VAC
ON:OK
FLASH;PHASE PROBLEM
o 0 0 o
L3 L1
Fig. 13--Phase Monitor Control
A00010
To prevent personal injury wear safety glasses, protective
clothing, and gloves when handling refrigerant.
Back seating service valves are not equipped with Schrader
valves. Fully back seat (counter clockwise) valve stem before
removing gage port cap.
Follow these steps to properly start up the system.
i. Fully back seat (open) liquid and vapor service valves.
2. Unit is shipped with valve stem(s) fi+ont seated (closed) and
caps installed, replace stem caps after system is opened to
refrigerant flow (back seated). Replace caps finger-tight and
tighten with wrench an additional 1/12 turn. Use a backup
wrench on valve body flats to prevent distortion of sheet
metal.
3. Close electrical disconnects to energize system.
4. Set room thermostat at desired temperature. Be sure set point
is below indoor ambient temperature.
5. Set room thermostat to HEAT or COOL and fan control to ON
or AUTO mode, as desired. Operate unit for 15 minutes.
Check system refrigerant charge.
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