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2.4 FAN OPERATION
The accessory fan is wired in series with a speed control
switch and a temperature sensor switch. Set the speed
control to an "ON" position and light the heater. The tem-
perature sensor switch will automatically start the fan when
the switch warms up—and stop the fan when it cools down.
You can manually stop the fan by turning the speed control
switch to "OFF". See Figure 32 for fan wiring diagram.
3.0 SERVICING AND MAINTENANCE
1. HEATER SERVICING: Frequency of heater servicing
will depend upon use and type of installation.
2. IMPORTANT: TURN OFF GAS BEFORE SERVICING
APPLIANCE. IT IS RECOMMENDED THAT A COMPE-
TENT SERVICE TECHNICIAN PERFORM SERVICE
CHECK-UPS AT THE BEGINNING OF EACH HEATING
SEASON.
3. The appliance and flue system should be inspected be-
fore initial use and at least annually by a qualified field
service person.
4. Inspect the external flue cap on a regular basis to make
sure that no debris is interfering with the air flow.
5. Keep the control compartment, logs, and burner area
surrounding the logs clean by vacuuming or brushing at
least twice a year.
CAUTION: THE LOGS GET VERY HOT - HANDLE ONLY
WHEN COOL.
WARNING: DO NOT USE ABRASIVE CLEAN-
!
ERS ON THE GLASS DOOR ASSEMBLY. DO
NOT ATTEMPT TO CLEAN THE GLASS DOOR
WHEN IT IS HOT.
6. The glass door should be cleaned using a household
glass cleaner. DO NOT handle or attempt to clean the
glass when it is HOT.
7. Visually inspect the flexible power supply cord; if dam-
aged, contact the service agent for a special replace-
ment cord assembly.
8. In order to properly clean the burner and pilot assem-
bly, turn off the gas to the unit and remove the logs
exposing the burner and pilot assembly. Clean all for-
eign materials from top of burner. Check to make sure
that the burner orifice is clean.
30
Heat & Glo • ST-HVBI-AU • 2082-900 Rev. C • 8/06
Visually inspect the pilot periodically. Brush or blow away
any dust or linen accumulations. If the pilot orifice is plugged,
disassembly may be required to remove any foreign mate-
rials from the orifice or tubing. When the appliance is put
back in service check burner flame patterns with Figure 40.
Figure 40.
To obtain proper operation, it is imperative that the pilot and
main burner flame characteristics are steady, not lifting or
floating. Typically, the top 3/8-inch of the thermocouple
should be engulfed in the pilot flame (See Figure 41).
Pilot Assembly
Figure 41.
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