SECTION 12: S
ERVICING
37
Combustion Air Intake
Pipe
Intake pipe and inlet must be intact. Look for obstructions, cracks on the pipe,
gaps in the sealed areas or corrosion.
The area must be free of dirt and dust.
Clean and reinstall as required.
Heat Exchanger
Make sure there are no cracks.
Make sure there is no sagging, bending or distortion.
Clean or replace as required.
See Page 22, Section 8
.
Gas Line and Shut-off
Valves
Check for gas leaks.
See Page 22, Section 8
.
Burner Observation
Window
Make sure it is clean and free of cracks or holes.
Clean and replace as required.
Flue Blower Scroll, Wheel
and Motor
Compressed air or a vacuum cleaner may be used to clean dust and dirt.
Inshot Burners and
Orifices
Clear obstructions (even spider webs will cause problems).
Carefully remove any dust and debris from the burner.
Direct-Spark Igniter
Replace if there are cracked ceramics, excessive carbon residue, or erosion
of the electrode.
The electrode gap should be 1/8" (3.2 mm).
Thermostat
There should be no exposed wire or damage to the device or wiring.
See Page 29, Section 10
.
Suspension Points
Make sure the heater is hanging securely.
Look for signs of wear on the suspension materials or ceiling.
See Page 11, Figure 5
.
Silicone Tubing
Ensure tight, secure fit on all pressure fittings at pressure switch,
burner partition, and blower outlet.
Gas Valve
Verify that cap covering pressure regulator adjustment screw is secure and
has not been tampered with.
Verify all wiring connections.
Condensate Drain
(when installed)
Flush drain and clear any obstructions.
Wall Tag
If wall tag is present, make sure it is legible and accurate. Please contact
Roberts Gordon LLC or ROBERTS GORDON® independent distributor if you
need a wall tag.
See Page 5, Section 2.1
.
