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PYROMASTER@ UVHB26 Vent-Free Heaters
MAINTENANCE
Keep the control compartment, logs and burner
area surrounding the logs clean by vacuuming or
brushing at least twice a year. THE LOGS CAN
GET VERY HOT
- HANDLE ONLY WHEN
COOL.
Always turn off gas to the pilot before cleaning.
For relighting, refer to lighting instructions located
on the front cover plate.
FP499A
Never obstruct the flow of combustion and venti-
lation air. Keep the front of the heater clear of all
obstacles and materials.
Fig. 12. Proper pilot flame height.
Leave at least 36" clearance from front of heater
to combustibles.
CLEANING THE STANDING
PILOT CONTROL SYSTEM
The burner and control system consists of:
. main burner. pilot burner
. gas orifice . thermopile
. combination millivolt gas valve
Most of these components may require only an
occasional checkup and cleaning and some may
require adjustment. If repair is necessary, it
should be performed by a qualified technician.
In order to properly clean the burner and pilot
assembly, turn off the gas to the unit, remove the
logs exposing the burner and pilot assembly.
Clean all foreign materials from the top of the
burner. Check to make sure that burner parts are
clean. Visually inspect pilot. Brush or blow away
any dust or lint accumulation If pilot orifice is
plugged, disassembly may be required to remove
any foreign material from the orifice or tubing.
To obtain proper operation, it is imperative that
the pilot and burner's flame characteristics are
steady, not lifting or floating.
Typically, the top 1/8" of the thermopile should be
engulfed in the pilot flame. See Figure 12.
13