Inspecting Burners - Desa LMFP33NR(A) Owner's Operation And Installation Manual

OPERATING HEATER
Continued
Setting Room Temperature
Press the up or down key until the small triangle
is to the left of the thermometer icon (see Figure
38, page 21). Press the left or right key to set the
desired room temperature.
Setting Timer (Sleep Function)
Press the up or down key until the small triangle
is to the left of the clock icon (see Figure 38, page
21). Press the left or right key to set the desired
sleep time. Maximum sleep time is 90 minutes,
in 15 minute increments. When desired time is
set, press the up or down key to start the timer.
When the desired time has elapsed, the appliance
will automatically switch off.
Child Safety Lock-Out
To lock the remote control keys, press the
On/Off key then immediately press the up key
(see Figure 38, page 21). The lock-out function
is active when the lock icon is lit. Repeat key
sequence to unlock keys.
Low Battery Detection and Backup
A battery icon will be displayed on the LCD
display when batteries are low in the remote
control (see Figure 38, page 21).
When the receiver detects a low battery condi-
tion;
• Three acoustic "beeps" are generated from
the receiver
• Appliance is turned off and will go to the
maximum flame height
• Execution of commands is inhibited until
batteries are replaced
When batteries are low, it is not possible to
turn on the appliance with the remote control.
Appliance can be turned on or off manually
by setting the backup switch of the receiver to
MAN position (see Figure 35, page 20). Remote
control and receiver will restart normal opera-
tion after batteries are replaced. See Installing
Batteries for Remote Receiver and Hand Held
Remote Control, page 19.
Timeout
If appliance is turned on and no command is
sent to the receiver for 24 hours, appliance will
automatically shut down. Commands sent after
shutdown will be executed normally.
22

INSPECTING BURNERS

Check pilot flame pattern and burner flame pat-
terns often.
PILOT FLAME PATTERN
Figure 39 shows a correct pilot flame pattern.
Figure 40 shows an incorrect pilot flame pattern.
The incorrect pilot flame is not properly heating
the thermocouple. When the thermocouple cools,
the heater will shut down.
If pilot flame pattern is incorrect, as shown in
Figure 40
• turn heater off (see To Turn Off Gas to Appli-
ance, page 21)
• see Troubleshooting, page 25
Note: The pilot flame on a natural gas units will
have a slight curve, but flame should be blue and
have no yellow or orange color.
Figure 39 - Correct Pilot Flame Pattern
Thermocouple
Pilot Burner
Figure 40 - Incorrect Pilot Flame Pattern
www.desatech.com
Thermocouple
Thermocouple
Pilot Burner
Thermocouple
Pilot Burner
111604-01H