Lennox International Inc. G24M SERIES - Manual (Page 5)

2=CA #
UPFLOW FURNACE
BOTTOM RETURN AIR
FIGURE 4
UPFLOW FURNACE
SIDE RETURN AIR
FIGURE 5
DOWNFLOW FURNACE
FILTERS IN PLENUM RACK
FIGURE 6
Blower
Check and clean blower wheel for any debris. Blower mo-
tor is prelubricated for extended bearing life. No further lu-
brication is needed.
WARNING
Blower door must be securely in place when blower
and burners are operating. Gas fumes, which could
contain carbon monoxide, can be drawn into living
space resulting in personal injury or death.
Burner Flame
The G24M burner flame is not adjustable; however, the
flame should be inspected at the beginning of each heat-
ing season and burners should be cleaned, if necessary.
Burner flame should be blue when burning natural gas,
blue/yellow when burning propane gas.
BURNER FLAME
BURNER
FLAME
HEAT
EXCHANGER
TUBE
VEST
PANEL
FLAME APPEARS BLUE IF
BURNING NAT. GAS; BLUE/
YELLOW FOR PROPANE.
FIGURE 7