Form O-Y P/N 273647R5, Page 41
Inspect the gas heat section annually to determine if cleaning is necessary. If there is
an accumulation of dirt, dust, and/or lint, clean the compartment.
CAUTION: Use of eye protection is recommended.
Inspect and Clean the Burner
1. Shut the gas supply off upstream of the combination valve.
2. Turn off the electric supply.
3. Open the burner access door.
4. Disconnect the union and remove the gas pipe from the inlet of the gas valve.
5. Mark and disconnect the electrical wires to the gas valve. Disconnect the tubing
from the static tap on the burner cover.
6. Remove the screws that attach the manifold to the burner rack. Slide the manifold
from the burner rack.
Excessive dirt buildup on and inside the ports on a burner could cause fuel gas to
spill out the back of the burner tube. Fuel gas spilling out of the back of a burner
tube will cause gas odor, and if not corrected, could eventually cause a fire/explosion
hazard. To prevent fuel gas spilling from the back of a burner tube, check the burner
ports at least annually and clean if necessary. Remove any soot deposits from the
burners with a wire brush. Clean the ports with an aerosol degreaser and/or com
-
pressed air. Wipe the inside of the burner tubes clean. (Cleaning the burners with an
aerosol degreaser is highly recommended as the degreaser will retard future buildup
of dirt.)
Inspect the cleaned burner rack for any damage or deterioration. If a burner has any
damage or signs of deterioration, replace it.
Clean the burner orifices with air pressure. Do not ream orifices.
After cleaning, re-assemble the heater and test for proper operation.
5.4 Burner and Heat
Exchanger
(Requires a wire
brush, cleaning cloth,
an automotive type
aerosol degreaser or
refrigerant coil cleaner,
and compressed air)
NOTE
: If any of the
burner components
are damaged or
deteriorated, replace
the burner assembly.
Heat Exchanger Maintenance
Access the heat exchanger by removing the manifold burner rack, flue wrapper and
disconnecting the vent. Use a brush and/or an air hose to remove accumulated dust
and grease deposits.
There should be no soot deposits. If sooting exists, check for improper gas manifold
pressure and for obstructions in the vent.
Re-Assemble the
Heat Exchanger
Panel, Burner, Gas
Train, and Venter
Instructions to Re-Assemble the Gas Heat Section
Re-attach the Burner Rack Assembly - Slide the entire burner rack assembly into
position. Insert all of the screws.
1.
Re-attach the Gas Train - Position the gas train so that the orifices are centered in
the burners. Attach the manifold to the burner rack assembly. Re-connect the wires
to the gas valve.
2.
Re-attach the flue wrapper & venter assembly. (If replacing venter parts, follow the
instructions above.) Re-connect the tubing and the wires.
3.
Close the access door.
4.
Reconnect the gas supply at the union outside of the cabinet. Leak test the
connection with leak detecting solution. Turn on the electric. Turn on the gas.
Check for proper operation.
