26
SSP-SVX001D-EN
IIm
mp
po
orrtta
an
ntt:: For the EDC switch to be functional and
thereby facilitate reliable unit operation,
make the EDC connections from the indoor
to the outdoor control boxes.
Table 7. Recommended thermostat wire size
Wire Size
Maximum Wire Length
(Gauge)
Physical distance between Unit & T’stat
22
30 Feet
20
50 Feet
18
75 Feet
16
125 Feet
14
200 Feet
Table 8. Zone sensor module wiring
Distance from Unit to
Control
Recommended Wire Size
0-150 feet (0-45.7 m)
22 gauge (0.33 mm
2
)
151-240 feet (46-73.1 m)
20 gauge (0.50 mm
2
)
241-305 feet (73.5-117.3 m)
18 gauge (0.75 mm
2
)
386-610 feet (117.7-185.9 m)
16 gauge (1.31 mm
2
)
611-970 feet (186.2-295.7 m)
14 gauge ( 2.08 mm
2
)
Field Wiring
Refer to the latest version of Condenser and Air
Handler Pairing guide (SS-SVN016*-EN) for
instructions on field wiring connections.
Refrigerant Circuit
Figure 15.
Typical split system heat pump - cooling - refrigerant circuit
Note A
Note A
S
D
COMPRESSOR
Note A
O
U
T
D
O
O
R
C
O
IL
IN
D
O
O
R
C
O
IL
AIR
AIR
TXV
Note A
FILTER DRIER
TXV
FIELD SUPPLIED
INTER-CONNECTING
TUBING
EQUALIZER
TUBE
EXPANSION
VALVE BULB
CHECK
VALVES
GAUGE
CONNECTION
HIGH PRESSURE
SWITCH (HPCO)
DISCHARGE TEMPERATURE
LIMIT(DTL)
LOW PRESSURE
SWITCH (LPCO)
EXPANSION
VALVE BULB
4-WAY
SWITCHOVER
VALVE
EQUALIZER
0000023130
LINE
NOTE A: ONLY ONE OUTDOOR AND INDOOR
COIL REFRIGERANT ENTRY AND
EXIT CIRCUIT IS SHOWN. ALL
MODELS HAVE MULTIPLE ENTRY
AND EXIT CIRCUITS.
HEAT PUMP CIRCUIT DIAGRAM
COOLING MODE
INDICATES DIRECTION OF
REFRIGERANT FLOW
NOTE B: DUAL CIRCUIT MODELS HAVE 2
REFRIGERATION CIRCUITS.
