Lennox International Inc. G24-200 - Manual (Page 30)

Page 30
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1
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G24−200 FIELD WIRING DIAGRAM
PRIMARY
LIMIT
PRESSURE
SWITCH
G
Y1
L1
FUSED OR
CIRCUIT BREAKER
DISCONNECT
(Furnished by
installer)
THERMOSTAT
C
GND
GAS
VALVE
W1
DOOR
INTERLOCK
PRIMARY
LIMIT
PRESSURE
SWITCH
DOOR
INTERLOCK
GAS
VALVE
FLAME ROLLOUT
SWITCH
K3 CONTACTOR
T3 TRANSFORMER
460v: white − red
230v: white − black
T1 TRANSFORMER
24v: blue − yellow
460v: black − black
R
W2
Y2
G
Y1
C
W1
R
W2
Y2
ECONOMIZER
RELAY
TB34
4
L1
ECON
L2 L3
T3 T2 T1
L1
L2
L3
3 1 2 4
K13
J84
T13 TRANSFORMER
460v: white − red
230v: white − black
7
K105
BLUE
YELLOW
BLACK
7
5
RELAY
K109
BLOWER MOTOR
CONTROL BOX
RELAY
TB1 TERMINAL STRIP
TERMINAL STRIP
MAKE−UP BOX
MAKE-UP BOX
L1
L2
PLUG
BLOWER DECK
BLUE
YELLOW
BLACK
RED
RED BLUE
RED
RED
(Alternate make-up
box left side)
(Alternate make-up
box right side)
SEE NOTE 1
NOTES :
1 − Relay K109 can be used
for an accessory rated at the
same voltage as power supply.
REMOVE JUMPER IN
TWO-STAGE MODE
BLACK
BLACK
BLUE
RED RED
L1 L2
L3
G UNITS − 460V 3PH 60HZ
J UNITS − 575V 3PH 60HZ
L3
2 − Field installed and supplied
resistor (R3), is required in two-
stage applications when using
electro-mechanical thermostat.
(Use a 150 ohm, 10 watt resistor
− Lennox part number P−8−6256.)
R3
See Note 2
COMBUSTION
AIR BLOWER
COMBUSTION
AIR BLOWER
IGNITION
CONTROL
BOARD
IGNITION
CONTROL
BOARD
GROUND
LUG
RED
RED
RED
RED
WHIT
E
WHIT
E
BL
ACK
BL
ACK
FACTORY INSTALLED
LINE VOLTAGE FIELD INSTALLED
24 VOLTS FIELD INSTALLED
FIELD-INSTALLED DRIVE KIT COMPONENT
FIGURE 17