Lennox G20R series User Manual

Page 13
FIGURE 14
THERMOSTAT WIRE ROUTING
BCC
IGNITION
CONTROL
GAS VALVE
ROUTE WIRE AWAY FROM
DRAFT HOOD

Left side thermostat wire entry.

 Right side thermostat wire entry.

NEUTRAL
TERMINALS
G20R BLOWER CONTROL CENTER
FIGURE 15
ACCESSORY
TERMINAL
THERMOSTAT
CONNECTIONS
BLOWER TIME
ADJUSTMENT
JUMPER
HEATING
SPEED TAP
TERMINAL
COOLING
SPEED TAP
TERMINAL
DUMMY
TERMINALS
CONTINUOUS
FAN
TERMINAL
THERMOSTAT JUMPER
(Electronic or Mechanical)
FIGURE 16
YRWG
GWYTR
BCC CONTROL
THERMOSTAT
IGNITION
CONTROL
GAS
VALVE
DAMPER
DOOR
SWITCH
FLAME
ROLLOUT
SWITCH
PRIMARY
LIMIT
BLOCKED
VENT
SHUTOFF
SWITCH
BLACK
WHITE
TO COMPRESSOR
CONTACTOR
FIELD INSTALLED LOW VOLTAGE
FIELD INSTALLED LINE VOLTAGE
TYPICAL G20R FIELD WIRING DIAGRAM
L1 N
FUSED DISCONNECT SWITCH (FURNISHED BY INSTALLER)
GROUND
TRANSFORMER
DOOR
INTERLOCK
SWITCH
MAKE-UP
BOX
SECONDARY
LIMIT

Lennox G20R series Specifications

General

Brand	Lennox
Model	G20R series
Category	Furnace
Language	English