9
Two-Stage Models
AI
R
FLO
W
12
34
56
78
Burner
Assembly
Finish
Flange
Igniter
Roll-Out
Switch
Gas Valve
Furnace
Control Board
Condensate
Pressure
Switches
Transformer
Motor
Control
Board
Blower
Assembly
Motor Choke
(C & D cabinets only)
Blower Door
Switch
Inducer
Assembly
Inducer
Pressure
Switches
Motor
Control Box
Inducer
Limit Switch
Main Air
Limit Switch
Burner
Assembly
Flame
Sensor
Roll-Out
Switch
Finish
Flange
Blower Assembly
(behind blower panel)
Blower
Door Switch
(behind blower panel)
Motor Choke
(C & D cabinets only)
Gas
Manifold
Gas Valve
Igniter
Inducer
Assembly
Inducer Limit
Switch
Main Air
Limit Switch
Furnace
Control
Board
Motor
Control
Board
Pressure
Switches
Transformer
FLOW
AIR
*TC 95.1%
Upflow / Horizontal Gas Furnace
*TL 95.1% +
Downflow Gas Furnace
Flame
Sensor
Gas
Manifold
Burner
Assembly
Finish
Flange
Roll-Out
Switch
Transformer
Motor
Control
Board
Blower
Assembly
Flame
Sensor
Motor Choke
(C & D cabinets only)
Motor
Control
Box
Blower Door
Switch
Inducer
Assembly
Pressure
Switches
Inducer
Limit Switch
Furnace
Control Board
Igniter
Gas Valve
Gas
Manifold
Main Air
Limit Switch
*MQ 97.1%
Upflow / Horizontal Gas Furnace
