Lennox KGA Series Service Literature page 39

VIII-Wiring Diagrams and Sequence of Operation
1
L1
T18
L2
460V - 575V
U N I T S
2
J11
H
B3
120/ 60/1
N
GROUND
PLUG, OUTDOOR FANS 1
P86
PLUG, EXHAUST FAN MOTOR 1
P132
JACK, SMOKE DETECTOR ONE
P250
JACK, SMOKE DETECTOR ONE
P251
JACK, SMOKE DETECTOR TWO
P252
JACK, SMOKE DETECTOR TWO
P253
PLUG, MODULE, CONTROL SMOKE DETECTION
P255
SWITCH, LIMIT LOW COMPRESSOR 1
S3
SWITCH, LIMIT HI PRESS COMP 1
S4
SWITCH, LIMIT HI TEMP COMPRESSOR 1
S5
SWITCH, LIMIT HI PRESS COMP 2
S7
SWITCH, LIMIT HI TEMP COMPRESSOR 2
S8
SWITCH, LOW PRESS, LOW AMBIENT KIT
S11
SWITCH, LIMIT LOW COMPRESSOR 2
S30
SWITCH, OVERLOAD RELAY BLOWER MOTOR
S42
SWITCH, DISCONNECT
S48
SWITCH, FREEZESTAT COMP 1
S49
SWITCH, FREEZESTAT COMP 2
S50
SWITCH, LOW PRESS, LOW AMBIENT KIT COMP 2
S84
SWITCH, OVERFLOW
S149
TRANSFORMER, CONTROL
T1
KGA092/150 UNIT DIAGRAM
6
8
A
B
A A
2
B B
NOTE - IF ANY WIRE IN THIS APPLIANCE IS REPLACED IT MUST BE
REPLACED WITH WIRE OF LIKE SIZE, RATING, TERMINATION AND
INSULATION THICKNESS
WARNING - ELECTRIC SHOCK HAZARD, CAN CAUSE INJURY OR
UNIT MUST BE GROUNDEDIN ACCORDANCE WITH NATIONAL AND
LOCAL CODES
DISCONNECT ALL POWER BEFORE SERVICING.
L3
L3 L3
T3
T3 T3
B2
HR2
HR1
5
7
TO
L1
TO
380-420V
N
UNITS
A42
A144
5
7
A171
A172
A173
B1
B2
B3
B4
B5
B10
C1
A
A
C2
C6
B
B
CB8
DL46
HR1
HR2
DEATH
J2
J11
J18
J24
J35
4
J36
J86
7 9
6
J132
9
J250
4 6
J251
6
J252
J253
J255
J261
2 3
K1,-1
K2,-1
K3, -1
K10,-1,2 RELAY, OUTDOOR FAN
K65-1,2
K220, -1 RELAY, OVERFLOW DELAY
2 2
3 1 3 1
P2
B4 B5
P18
P24
DENOTES OPTIONAL COMPONENTS P35
LINE VOLTAGE FIELD INSTALLED
P36
Page 39
P2 IS USED ON KCA UNITS ONLY
IMPORTANT: TO PREVENTMOTOR BURNOUT, NEVER
CONNECT MORETHAN ONE MOTORLEADTO ANY ONE
CONNECTION. TAPE UNUSED MOTOR LEADS
S42 USEDON "M" VOLTAGEUNITS AND UNITS
WITH HIGH EFFICIENCY MOTORS
CONNECT A172 SENSOR TO J261 ON SUPPLY AI R
SMOKE DETECTOR ONLY
S48 OR CB10 MAY BE USED
JUMPER WHEN S11 AND S84 ARE NOT USED
3
DESCRIPTION
KEY COMPONENT
MONITOR, PHASE PROTECTION
MODULE, VOLTAGE REDUCTION
SENSOR ONE, SMOKE, RETURN AIR
SENSOR TWO, SMOKE, SUPPLY AIR
MODULE, CONTROL SMOKE DETECTION
COMPRESSOR 1
COMPRESSOR 2
MOTOR, BLOWER
MOTOR, OUTDOOR FAN 1
MOTOR, OUTDOOR FAN 2
MOTOR, EXHAUST FAN 1
CAPACITOR, OUTDOOR FAN 1
CAPACITOR, OUTDOOR FAN 2
CAPACITOR, EXHAUST FAN 1
CIRCUIT, BREAKER T1
DELAY, OVERFLOW SWITCH
HEATER COMPRESSOR 1
HEATER COMPRESSOR 2
JACK, HEAT
JACK, GFI, RECEPTICLE
JACK, EXHAUST FAN COMPT
JACK, EXHAUST FAN
JACK, TEST
JACK, TEST COOL
JACK, OUTDOOR FANS 1
JACK, BLOWER , EXHAUST FAN MOTOR 1
JACK, SMOKE DETECTOR ONE
JACK, SMOKE DETECTOR ONE
JACK, SMOKE DETECTOR TWO
JACK, SMOKE DETECTOR TWO
JACK, MODULE, CONTROL SMOKE DETECTION
JACK, SMOKE DETECTOR JUMPER
CONTACTOR, COMPRESSOR 1
CONTACTOR, COMPRESSOR 2
CONTACTOR, BLOWER
RELAY, EXHAUST FAN
JACK, HEAT
PLUG, EXHAUST FAN COMPT
PLUG, EXHAUST FAN
JACK, TEST
PLUG, TEST COOL
COOLING
24V POWER
ECONOMIZER
BLOWER(G)
HEAT 1(W1)
HEAT 2(W2)
COOL 1(Y1)
COOL 2 (Y2)
24V COMMON
REV. 0.0
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