Lennox SL280DFV Installation Instructions Manual page 45

SL280DFV BURNER, COMBUSTION AIR INDUCER ASSEMBLY &
gasket
flue chase
internal flue pipe internal flue pipe
combustion air inducer combustion air inducer
rollout switch
burner box assembly burner box assembly
sensor
gasket gasket
HEAT EXCHANGER REMOVAL
orifice plate orifice plate
ignitor
burners burners
manifold and gas valve manifold and gas valve
burner box cover plate burner box cover plate
gasket gasket
collector box collector box
pressure switch pressure switch
FIGURE 30
Page 45
heat exchanger heat exchanger
retention rings
cross over