Lennox ACBX32CM, Installation Instructions Manual

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Page 10
506316−0 1 11/16
CIRCUIT 1
CIRCUIT BREAKERS
OR TERMINAL BLOCK
1
4
7
3
6
9
NOTE − USE COPPER CONDUC TORS ONLY.
REFER TO UNIT RATING PLATE FOR MINIMUM
CIRCUIT AMP ACITY AND MAXIMUM OVERCUR -
RENT PROTECTION SIZE.
LINE VO LT AGE FIELD INSTALLE D
CLASS 2 VO LT AGE FIELD INSTALLE D
NEC/CEC
NOTE − ALL REMAINING WIRES ARE FACTORY
INST ALLED
TO EXTERNAL LOAD 24V AC AT .50 AMP MAXI -
MUM.
THERMOSTAT HEAT ANTICIPATION SETTING 0.4
AMP ELECTRIC HEAT
WHEN TWO−S TAGE THERMOSTA T IS USED ,
CONNECT SECOND STAGE HEAT BULB TO TER-
FACTORY INST ALLED JUMPER S
L3 CONNECTION USED ON (Y−VO LTAGE)
3−PHASE ELECTRIC HE ATERS ONLY.
CB1
CIRCUIT
BREAKER
OR
FUSE
Figure 11. Typical Field Wiring − Cooling Application with Electric Heat
W 1 O Y1 R L T
R L T
SERVICE
LIGHT
THERMISTOR
Y2
Y2
2ND
S
TAGE
COMPRESSOR
1
2
3
4
5
6
COMMON
ELECTRIC
HE
AT
REVERSING
V
A
L
VE
COMPRESSOR
POWER
1
4
7
3
6
9
LINE VO LTAGE FIELD INST ALLED
CLASS 2 VO LTAGE FIELD INST ALLED NEC/CEC
NOTE − ALL REMAINING WIRES ARE FACTORY INST ALLED
TO EXTERNAL LOAD 24 V AC AT .50 AMP MAXIMUM
FACTORY INST ALLED JUMPERS
Y2 USED ONLY WHEN TWO SPEED COMPRESSOR IS USED (HP21).
USING SERVICE LIGHT OPTION (S54) WITH SOME ELECTRONIC
THERMOSTATS MAY REQUIRE MOVING S54 COMMON WIRE TO Y1
IN HEAT PUMP UNIT.
COMMON USED ON LY ON SOME THERMOSTATS.
AMBIENT COMPENSA TING THERMISTOR CONNECTION USED ON LY
ON SOME THERMOSTATS.
CIRCUIT 1
HEAT PUMP CLASS 2
VO LTAGE TERMINALS
CB1
CIRCUIT
BREAKER
OR FUSE
CIRCUIT BREAKERS
OR TERMINAL BLOCK
Figure 12. Typical Field Wiring − Heat Pump Only Application
MINAL “W2” AND REMOVE JUMPER BETWEEN
TERMINALS “R” AND “W2.”
C
C
E
W1
G O Y1