Page 3
WIRING
Low ambient pressure switch S11 is wired in series with
outdoor fan relay or compressor contactor (single-stage
or speed units).
Low ambient kits are shown with optional arrows on unit
wiring diagrams. If unit wiring diagram is not available or
does not show the low ambient kit, refer to appropriate
wiring diagram in figures 3 through 13 for wiring
connections.
8
K4
DEFROST
RELAY
9
7
5
6
4
2
3
1
9
7
6
4
3
1
S11
LOW AMBIENT
PRESSURE
SWITCH
L1
REVERSING
VALVE
B4
K58 LOW
AMBIENT
RELAY
FIGURE 3
TO 24V COM
OUTDOOR
FAN MOTOR
S11 LOW AMBIENT CONTROL SWITCHES
OUTDOOR FAN DIRECTLY (LINE VOLTAGE)
SEE SCHEMATIC FIGURE 4
TO C12
TERMINAL F
REMOVE THIS
WIRE
REMOVE THIS WIRE
FIELD WIRING
FACTORY WIRING
TO C12 TERM C
TO K1-1
D
TO R" LOW
VOLT
TERM STRIP
TO O" LOW
VOLT TERM
STRIP
TO K1-1
K31 PIN 5
COMP C"
4
1
