Lennox LGH094U Unit Information page 73

LGH150H - Y - CONSTANT SUPPLY AIR, BELT DRIVE BLOWER
P268 P268
J268 J268
A55
T43
L14
L14
L30
K251
RSV
T43
A55
T43
GND
R
1
DI 4
J268
P268
GND
T1
24 VAC COMMON
GND
CB10
J268
P268
F4/F61
S48
TB2
4
J11
B3
S42 USED ON "M" VOLTAGE UNITS AND UNITS WITH
HIGH EFFICIENCY MOTORS
ONLY IN UNITS WITH HUMIDITROL OR PHASE AND
VOLTAGE DETECTION OPTION
EXTERNAL HUMIDITROL CONTACTS
S49 AND S50 ARE PART OF 5VDC CIRCUIT
J268-1,-3 AND J268-2,-4 ARE CONNECTED ON UNITS
WITHOUT HUMIDITROL OR PHASE DETECTION OPTIONS
B10 IS NOT USED ON UNITS WITH ERV
USED ON UNITS WITH ERV SINGLE POINT
POWER. SEE ERV DIAGRAM
USED ON LCH AND UNITS WITH ERV SINGLE
POINT POWER ONLY
NOTE: FOR USE WITH COPPER CONDUCTORS
ONLY. REFER TO UNIT RATING PLATE FOR
MINIMUM CIRCUIT AMPACITY AND MAXIMUM
OVERCURRENT PROTECTION SIZE.
NOTE - IF ANY WIRE IN THIS APPLIANCE IS REPLACED
IT MUST BE REPLACED WITH WIRE OF LIKE SIZE,
RATING, TERMINATION AND INSULATION THICKNESS.
DISCONNECT ALL POWER BEFORE SERVICING !
A55
S49
RT17
S87
S11
S84 S5
A55
P265
P265
J265A
J265C
P265
13
J265C
A
8
10
K1
A A
B
K10
K68
B B
J265C J265A
P265 P265
1
C C
NC NC
B1 B2
HR1 HR2
14
9
J/P JACK/PLUG DESCRIPTION
Page 73
KEY
A55
B1
B2
B3
B4
B5
B10
C1
C2
A55
C6
CB8
CB10
CB31
F4
S50
F10
F61
HR1
HR2
J11
K1,−1
S88 K2,−1
K3, −1
K10,−1,2
K65−1,2
K68,−1,2
S4
K251−1,2
S7
L14
L30
RT17
S8
S4
S5
S7
A55 A55
P265
S8
J265A
S11
S42
S48
S49
P265 P265
S50
A
J265E
J265B
S84
K2
S87
A A
B S88
3
K3 K65
T1
B B
T43
5
TB2
J265E
P265
F10
7 7
11
4 4
C2
C1
7 9
1 3
J87
J86
P87
P86
B4 B5
Supersedes
537897-01
24 VAC POWER
COMPONENT
PANEL, MAIN
COMPRESSOR 1
COMPRESSOR 2
MOTOR, BLOWER
MOTOR, OUTDOOR FAN 1
MOTOR, OUTDOOR FAN 2
MOTOR, EXHAUST FAN
CAPACITOR, OUTDOOR FAN 1
CAPACITOR, OUTDOOR FAN 2
CAPACITOR, EXHAUST FAN
CIRCUIT BREAKER, TRANSFORMER T1
CIRCUIT BREAKER, UNIT MAIN DISCONNECT
CIRCUIT BREAKER, TRANSFORMER T43
FUSE, UNIT
FUSE, OUTDOOR FAN MOTOR
FUSE, SCCR OPTION UNIT
HEATER, COMPRESSOR 1
HEATER, COMPRESSOR 2
JACK, GFI RECEPTICLE
CONTACTOR, COMPRESSOR 1
CONTACTOR, COMPRESSOR 2
CONTACTOR, BLOWER
RELAY, OUTDOOR FAN 1
RELAY, EXHAUST FAN
RELAY, OUTDOOR FAN 2
RELAY, 2 SPEED MOTOR
VALVE,SOLENOID REHEAT COIL 1
VALVE,SOLENOID REHEAT COIL 2
SENSOR, OUTSIDE AIR TEMPERATURE
SWITCH, LIMIT HI PRESS COMP 1
SWITCH, LIMIT HI TEMP COMPRESSOR 1
SWITCH, LIMIT HI PRESS COMPRESS 2
SWITCH, LIMIT HI TEMP COMPRESSOR 2
SWITCH, LOW PRESS, LOW AMBIENT KIT COMP 1
SWITCH, OVERLOAD RELAY BLOWER MOTOR
SWITCH, DISCONNECT
SWITCH, FREEZESTAT COMP 1
SWITCH, FREEZESTAT COMP 2
SWITCH, LOW PRESS, LOW AMBIENT KIT COMP 2
SWITCH, LOW PRESS, COMPRESSOR 1
SWITCH, LOW PRESS, COMPRESSOR 2
TRANSFORMER, CONTROL
TRANSFORMER, HUMIDITROL
TERMINAL STRIP, UNIT
24 VAC COMMON
7 9
6
4 6
J18
P18
C6
J132
P132
B10
07/18
WIRING DIAGRAM
COOLING
LCH/LGH 150H - Y
SECTION B REV 0
New Form No.
537897-02