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R720 & R820 Power Vent Indoor Gas Fireplace
Section 10: Cleaning and Maintenance
General
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Have the fireplace and installation inspected yearly� The
inspection must include, but is not limited to, the following:
• A visual check of the entire vent system and termination.
• An inspection of the door gaskets to ensure a proper seal.
• An inspection of the burner, vent run, and primary air
openings�
• An inspection of the gas valve, gas components, and pilot
flame. For your convenience a 1/8" manifold pressure tap
is supplied on the gas valve for a test gauge connection�
For Natural Gas this appliance requires a minimum inlet pressure
■
of 5�5" W�C� and a manifold pressure of 3�5" W�C�
■
For Propane Gas this appliance requires a minimum inlet
pressure of 11" W�C� and a manifold pressure of 10" W�C�
■
Always keep the fireplace area clear and free of combustible
materials, as well as gasoline and other flammable vapors and
liquids�
■
Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and any
gas control which has been under water�
NOTICE
Do not use ammonia based or abrasive cleaners on the glass, they will permanently
etch the surface. Use an approved gas fireplace glass cleaner such as Kel-Kem or
White off.
Page 32
Maintenance
Cleaning
When the fireplace is first activated, there may be some smoking and
a visible film may be left on the glass. This is a normal condition, and
is the result of burning of protective coatings on new metal�
■
Glass must be cleaned periodically to remove any film (which is
a normal by-product of combustion) which may be visible� Film
can easily be removed by removing the door, as shown on Page
29� Handle the door carefully, and clean it with non-abrasive,
non-ammonia based glass cleaners� One of the most effective
products is Kel-Kem�
■
During the initial firing, Silicone seals will "off gas", leaving a visual
deposit of a white substance on combustion chamber walls� This
can easily be removed using normal household products�
■
Use a vacuum cleaner or whisk broom to keep the control
compartment, burner, and firebox free from dust and lint.
Procedure for Checking Calibration of Flue Gas Switch
1)� Disconnect power vent harness from the plug in the control box�
2). Turn wall switch 'ON'.
3). Monitor flue gas switch LED for 2 minutes and ensure LED
does not come on or the glow plug will not light during this period�
4)� Reconnect power vent harness to plug in the control box�
Gas Control Valve
Figure 23� Gas valve.
Honeywell (Q3450)
Pilot Assembly
Honeywell Gas
Control (SV9501M)
Gas Control
Connector
R
W
Bk
Pilot Electrical
Harness Connector
XG0772 - 150105.1
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