Desa BVDR18 - Manual (Page 15)

www.desatech.com 901746-01E 15
INSPECTING BURNERS
Thermocouple
Figure 23 - Correct Pilot Flame Pattern
Pilot
Check pilot flame pattern and burner flame
patterns often.
PILOT ASSEMBLy
The pilot assembly is factory preset for proper
flame height. Alterations may have occurred
during shipping and handling. The pilot is
located on back right hand side of burner.
The thermocouple should be fully enveloped
in flame. Flame should not be lifting off ther-
mocouple element.
If your pilot assembly does not meet these
requirements:
• Access pilot adjustment screw through
slot in valve cover. Turn adjustment screw
clockwise to decrease or counterclockwise
to increase flame to proper size (see Figure
17, page 11). Do not remove adjustment
screw.
• see Troubleshooting, page 16
BURNER FLAME PATTERN
Burner flames will be steady; not lifting or
floating. Flames should go up through the
middle of log set. Flames should not "spill" to
edges of pan or sides of log set.
Figure 24 shows a typical flame pattern. If
burner flame pattern differs from that de-
scribed:
• turn appliance off (see To Turn Off Gas to
Appliance, page 14)
• see Troubleshooting, page 16
Figure 24 - Typical Flame Pattern
CLEANING AND MAINTENANCE
• Keep area around log set clean and clear
of debris.
• Occasionally, you may use a soft bristle
brush to clean logs.
• Periodically inspect air mixer and burner
tube for foreign matter blocking air inlet
and flame holes.
• Once every year a qualified agency or
certified chimney sweep should examine
and clean venting system of fireplace.