Desa V)CD36RN - Manual (Page 36)

www.desatech.com 116035-01E 36
Figure 68 - Typical Flame Pattern
OPERATING FIREPLACE
Continued
Note for BKT Only: If you are using BKT
blower with optional thermostat (wall mounted
or remote control) for the fireplace, your fire-
place and blower will not turn on and off at the
same time. The fireplace may run for several
minutes before the blower turns on. After the
heater modulates to the pilot position, the blow-
er will continue to run. The blower will shut off
after the firebox temperature decreases.
The blower helps distribute heated air from
the fireplace. Periodically check the louvers of
the firebox and remove any dust, dirt or other
obstructions that will hinder the flow of air.
Figure 65 - Setting the Selector Switch, Gas
Control Knob and Variable Control Knob for
Remote Operation
Thermocouple
Thermopile
1/8"
Pilot Burner
Piezo
Ignitor
Figure 66 - Pilot Assembly (Millivolt)
3/8" to 1/"
INSPECTING bURNERS
Check pilot flame pattern and burner flame pat-
terns often.
PILOT ASSEMBLY
The pilot assembly is factory preset for the proper
flame height. Alterations may have occurred dur-
ing shipping and handling. Call a qualified service
person to readjust the pilot if necessary.
The position and pattern of the pilot flames in rela-
tion to the sensing devices should be as shown in
Figures 66 and 67 depending on model.
Figure 67 - Pilot Assembly (Electronic)
BURNER FLAME PATTERN
Burner flames will be steady; not lifting or floating.
Flame patterns will be different from unit to unit
and will vary depending on installation type and
weather conditions.
If the vent configuration is installed incorrectly,
the flames will lift or "ghost". This can be danger-
ous. Inspect the flames after installation to ensure
proper installation and performance.
Figure 68 shows a typical flame pattern.
If burner flame pattern differs from that de-
scribed:
• turn fireplace off (see To Turn Off Gas to Ap-
pliance, page 32 or 35 depending on model)
• see Troubleshooting, page 38
OF
F PIL
O
T
LO
IH
ON OFF REMOTE
ON
OFF
O N
Sensor
Rod
Pilot
Burner
Piezo
Ignitor
If you pilot assembly does not meet these require-
ments:
• turn fireplace off (see To Turn Off Gas to Ap-
pliance, page 32 or 35 depending on model)
• see Troubleshooting, page 38