Inspecting Burners; Pilot Assembly - Desa CDV41N/P Owner's Operation And Installation Manual

OPERATING
FIREPLACE
Continued
HAND-HELD REMOTE
OPERATION
NOTICE: You must light the pilot
before using the hand-held re-
mote control unit. See Lighting
Instruction, page 24.
1. After lighting, let pilot flame burn for
about one minute. Turn gas control
knob on the control valve to ON posi-
tion. Turn variable control knob any-
where between HI and LO. Slide the
selector switch to the REMOTE po-
sition. Note: The burners may light if
hand-held selector switch was last
turned off. You can now turn the burn-
ers on and off with the hand-held re-
mote control unit.
IMPORTANT: Do not leave the se-
lector switch in the REMOTE posi-
tion when the pilot is not lit. This will
drain the battery.
IMPORTANT: Be sure to press the
ON/OFF buttons on the hand-held
remote control unit for up to 3 sec-
onds to assure proper operation.
2. Press the ON/OFF button to turn the
burners on and off. When turning
burners off, the pilot will remain lit.
IMPORTANT: To turn the pilot off,
manually turn the gas control knob
on the heater to the OFF position.
Blower Control Knob
(Optional Accessory)
OFF
ON
Selector Switch in
Remote Position
Figure 51 - Setting the Selector Switch,
Gas Control Knob, and Variable Control
Knob for Remote Operation
105541
OPTIONAL BLOWER
Locate the blower controls by opening
the lower louver panel on the fireplace.
Blower controls are located on the left
side of the switch bracket to the left just
inside the louver panel.
Both the GA3750 manual blower and the
CDA3620T thermostatically-controlled
blower have an ON setting and an OFF
setting. The blower will only run when the
switch is in the ON position. In the OFF
position, the blower will not operate.
Note for CDA3620T Only: If you are
using CDA3620T blower, your fireplace
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 blower 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.
INSPECTING
BURNERS
Check pilot flame pattern and burner flame
patterns often.

PILOT ASSEMBLY

The pilot assembly is factory preset for the
proper flame height. Alterations may have
occurred during shipping and handling. Call
Variable
Control Knob
a qualified service person to readjust the
pilot if necessary.
The height of the thermopile must be 3/8" to
1/2" above the pilot flame as shown in Figure
52. The thermocouple must be at a height of
about 1/8" above the pilot flame. The flame
from the pilot burner must extend beyond
Gas Control
both the thermocouple and thermopile.
Knob in On
Position
If your pilot assembly does not meet these
requirements:
• turn fireplace off (see To Turn Off Gas to
Appliance, page 24)
• see Troubleshooting, pages 27 through 29
OWNER'S MANUAL
OPERATING
ACCESSORY
25
Thermopile
3/8" to 1/2"
Pilot Burner
Piezo
Ignitor
Figure 52 - Pilot Assembly
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 incor-
rectly, the flames will lift or "ghost". This
can be dangerous. Inspect the flames after
installation to ensure proper installation and
performance.
Figure 53 shows a typical flame pattern for
CDV37N(A,B), CDV37P(A,B),
CDV41N(A,B), and CDV41P(A,B) models.
If burner flame pattern differs from that
described:
• turn fireplace off (see To Turn Off Gas to
Appliance, page 24)
• see Troubleshooting, pages 27 through 29
Figure 53 - Typical Flame Pattern for
CDV37N/P(A,B) and CDV41N/P(A,B)
1/8"
Thermocouple