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Cleaning the Burners
NOTE - Use papers or protective covering in front of the
furnace during cleaning.
1 - Turn off both electrical and gas power supplies to
furnace.
2 - Label the wires from gas valve, rollout switches,
primary limit switch and make-up box then disconnect
them.
3 - Disconnect gas supply piping. Remove the screw
securing the burner box cover and remove cover.
Remove the four screws securing the burner manifold
assembly to the vestibule panel and remove the
assembly from the unit.
Ignitor
Sensor
BURNER ASSEMBLY & REMOVAL
Rollout Switches
Manifold And Gas Valve
FIGURE 37
Page 34
4 - To clean burners, run a vacuum cleaner with a soft
brush attachment over the face of burners. Visually
inspect inside the burners and crossovers for any
blockage caused by foreign matter. Remove any
blockage. FIGURE 37 shows burner detail.
5 - Reinstall burner box, manifold assembly and burner
box cover.
6 - Re-install gas supply and turn on electrical power to
furnace.
Burner Detail Front View
Cross Over
Retention Rings
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