Lennox 41718L098, Installation And Maintenance Instructions Manual

Page: 7 / 8

# 41718L098 Page 7
Figure 4
(IF USED)
(IF USED)
START
ASSIST
DEVICE
GROUND
SCREW
GROUND
SCREW
TDC
TIME DELAY
RELAY
BLUE
BLUE
TIME DELAY RELAY
(IF USED)
LOAD
C C
T'STAT
DISCHARGE THERMOSTAT
(IF USED)
DISCHARGE
THERMOSTAT
(IF USED)
1
2
5
YEL
START RELAY
(IF USED)
START CAPACITOR
(IF USED)
T2
L2
COMPRESSOR
MOTOR
FAN
MOTOR
R
S
C
CRANKCASE HEATER
(IF USED)
1
2 5
COMPRESSOR
CONTACTOR
T1
L1
T2
T1
L2
L1
L2
L1
T2
T1
SCHEMATIC OF POWER CIRCUIT SCHEMATIC OF POWER CIRCUIT
TYPICAL
SCHEMATIC
OF CONTROL
CIRCUIT
PART NO. 38602D008
HIGH PRESSURE
SWITCH
COMPRESSOR
CONTACTOR COIL
THERMOSTAT TERMINALS
Y
OUTDOOR POWER SUPPLY
R
C
YEL
NOTE:
IF ANY OF THE ORIGINAL
WIRE IS REPLACED, THE
SAME SIZE AND TYPE WIRE
MUST BE USED.
LINE VOLTAGE - FACTORY
LINE VOLTAGE - FACTORY (IF USED)
LINE VOLTAGE - FIELD
LOW VOLTAGE - FACTORY
LOW VOLTAGE - FACTORY (IF USED)
LOW VOLTAGE - FIELD
CONNECTION
DIAGRAM
BLK
BLK
HERM FAN
COM
START RELAY
(IF USED)
START CAP.
(IF USED)
CONNECT TO “C” AND
“Y” TERMINALS OF
INDOOR CONTROL
CIRCUIT HAVING MIN.
40 VA, 24 VOLT N.E.C.
CLASS II TRANSFORMER.
TO SINGLE PHASE
POWER SUPPLY PER
RATING PLATE WITH
MINIMUM 75°C COPPER
WIRE ONLY. CIRCUIT
PROTECTION PER
RATING PLATE.
ALT.
CONTACTOR
CRANK CASE
HEATER
(IF USED)
R R
S
C
RED
YEL
YEL
BLK
RED
RED
RED
BLK
YEL
VIOLET
BLK
BROWN
HIGH PRESSURE
SWITCH
(IF USED)
CONTACTOR
COMP
RUN
CAP
FAN
COMP
R
COMPRESSOR
RUN
CAPACITOR
(IF USED)
LOW PRESSURE
SWITCH
(IF USED)
LOW PRESSURE
SWITCH
(IF USED)
(IF USED)
START
ASSIST
DEVICE