Lennox SL280UHNV - IX- Program Unit Capacity Size Modes

Page 45
Gas Valve
Air Intake Assembly
*Air Fuel Plenum
Gasket
(replace)
Debri Screen
Air Fuel Plenum
Burner
Heat Exchanger
* Re-install screws per the numbered sequence shown
Gasket
Gasket
Heat Exchanger and Burner Assembly Removal (-01 to -04 Models)
FIGURE 31
Heat Exchanger and Burner Removal (-05 and later models)
Heat Exchanger
A
ir Intake Coupling
Gas Valve
Air Fuel
Plenum
Primary Limit
Gaskets
(replace)
FIGURE 32