7
Three Phase Units
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Connect the field supply wires (L1, L2, L3) to the 3 black
pigtail leads using UL listed wire nuts.
NOTE: Check compressor operation for proper rotation. If the
rotation is not correct, then reverse any two leads (for example:
L1 and L2). Incorrect rotation is identified by excessive sound or
improper system pressures.
Line and Low Voltage Connections
1. Route the low voltage supply wires through the low voltage
entry opening to the low voltage connection area providing
sufficient length to connect to the low voltage pigtail leads.
2. Using UL listed wire nuts, connect the low voltage supply
wires to the matching colors of the low voltage leads.
3. Replace the heater compartment access panel.
4. Replace the blower access panel.
208 Volt Conversion
1. Disconnect power.
2. Remove the heater compartment access panel.
3. Move the black wire lead from the 240-volt terminal on the
transformer to the 208-volt terminal (center tap) on the
transformer. See the wiring connection diagrams in
“Troubleshooting.”
4. Replace the heater compartment access panel.
Complete Installation
IMPORTANT: Do not use this heat pump or condensing unit if
any part has been under water. Immediately call a qualified
person to inspect the heat pump or condensing unit and to
replace any part of the control system and gas control which has
been under water.
1. Check to be sure you have all of your tools.
2. Dispose of/recycle all packaging materials.
3. Check the heat pump or condensing unit in its final location.
SEQUENCE OF OPERATION
Cooling Cycle—Cooling Only
Upon cooling demand, the thermostat closes circuit R to Y.
Closing R to Y energizes the package unit for cooling operation
and closes the contactor, starting the compressor and outdoor
fan. The thermostat automatically closes R to G circuit which also
brings on the indoor fan at the same time. Upon satisfying
cooling demand, the thermostat will open the above circuits nd
open the main contactor, stopping the compressor and outdoor
fan. If equipped with a delay timer, the blower will continue to
operate for 60 to 90 seconds which improves system efficiency.
Cooling Cycle—Heat Pump Only
Upon cooling demand, the thermostat closes circuit R to O and Y.
Closing R to O and Y energizes the reversing valve for cooling
operation and closes the heat pump contactor, starting the
compressor and outdoor fan. The thermostat automatically
closes R to G circuit, which also brings on the indoor fan at the
same time. Upon satisfying cooling demand, the thermostat will
open the above circuits and open the main contactor, stopping
the compressor and outdoor fan. If the indoor unit is equipped
with a delay timer, the blower will continue to operate for 60 to
90 seconds, which improves system efficiency.
A. Line voltage supply conduit
B. Ground pigtail connection
C. Line voltage field supply connections
D. Electrical connection box
E. Low voltage connections
F. Low voltage supply conduit
D
C
B
A
E
F
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or electrical shock.
Replace all parts and panels before operating.
