PROCEDURE 6—REFRIGERANT FLOW-CONTROL DEVICE
CAUTION: If using a TXV (FC4C factory installed) in conjunction with a single-phase reciprocating compressor, a
compressor start capacitor and relay are required. Consult outdoor unit pre-sale literature for start assist kit part no.
Replace piston if required. Check piston size shown on indoor unit rating plate to see if it matches required piston shown on outdoor unit rating
plate. If it does not match, replace indoor piston with piston shipped with outdoor unit. The piston shipped with outdoor unit is correct for any
approved indoor coil combination (See Fig. 17). When changing piston, use a back-up wrench. Hand tighten hex nut, then tighten with wrench
1/2 turn. Do not exceed 30 ft-lbs.
PROCEDURE 7—CONDENSATE DRAINS
To connect drains, the cap openings must be removed. Use a knife to start the opening near the tab and using pliers, pull the tab to remove the
disk. Clean the edge of the opening if necessary and install the condensate line. Finally caulk around the lines where they exit the fitting to retain
the low leak rating of the unit.
Fig. 13—Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat for Manufactured Housing)
A03088
R
E
W
2
R
C
THERMOSTAT
FAN COIL
(CONTROL)
HEAT PUMP
(CONTROL)
G
C
W
2
E
L
G
C
R
O
Y
ODTS
O
Y
W
3
W
2
Fig. 14—Wiring Layout Heat Pump Unit
(Cooling and 2-Stage heat with 2 Outdoor Thermostats)
A94062
R
G
C
L
E
O
C
1
4
7
C
9
6
3
Y
THERMOSTAT
R
R
C
O
Y
G
C
W
2
W
2
W
2
W
3
E
FAN COIL
(CONTROL)
EMERGENCY HEAT RELAY
HEAT PUMP
(CONTROL)
ODTS1
ODTS2
RED
GRY
BRN
WHT
BLU
VIO
—10—
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