Desa FVFM27NR Inspecting Burners, Fireplace Manufacturers Incorporated, Operating Heater

FIREPLACE MANUFACTURERS INCORPORATED

UNVENTED NATURAL GAS LOG HEATER

OPERATING

HEATER

Continued

IMPORTANT: The hand-held remote control unit must be near the heater. Do not keep the hand-held remote control unit too close to the heater. The thermostat on the hand-held re- mote control unit will heat up too quickly and turn the heater off.

3.Use the STATUS button on the hand- held remote control unit to see the

operation mode being used and the temperature setting selected. A red light will come on beside the opera- tion mode being used when the sta- tus button is pressed.

4.To turn the burners off when operat- ing in the manual mode, press the OFF button. If operating in the auto mode, press the MAN button, then press the OFF button. The pilot will remain lit. IMPORTANT: To turn the pilot off, manually turn the control knob on the heater to the OFF position.

INSPECTING

BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 24 shows a correct pilot flame pat- tern. Figure 25 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touch- ing the thermocouple. This will cause the thermocouple to cool. When the thermo- couple cools, the heater will shut down.

Flame Adjustment Knob	Control Knob in
	On Position
IH		F	PIL
ON			O
	O	F	T
OFF			O
			N
REMOTE
LO

If pilot flame pattern is incorrect, as shown in Figure 25

•turn heater off (see To Turn Off Gas to Appliance, page 15)

•see Troubleshooting, pages 17 through 19

Pilot Burner Thermocouple

Selector Switch in Remote Position

(Optional Remote Control)

Figure 22 - Setting the Selector Switch, Control Knob, and Flame Adjustment Knob for

Remote Operation

Figure 24 - Correct Pilot Flame Pattern

Shows Temperature Setting		HI
		TEMP
Allows burners to be turned
on and off with the hand-
held remote unit.	MAN	LO ON
The log heater will	AUTO	OFF
automatically cycle between
pilot and the heat setting that		STATUS
has been selected.

Increases Room Temperature

Decreases Room Temperature

Turns Burners On and Off

Shows Current Operation Mode

Pilot Burner Thermocouple

Figure 25 - Incorrect Pilot Flame Pattern

BURNER PRIMARY AIR HOLES

Air is drawn into the burner through the holes in the fitting at the burner entrance. These holes may become blocked with dust

Figure 23 - Thermostat Hand-Held Remote Control Unit Selections (GHRCT Only)

or lint. Periodically inspect these holes for any blockage and clean if needed. Blocked air holes will create soot.

MAIN BURNER

Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame present. All round burner flame holes should be open with a small blue flame present. Some burner flame holes may be- come blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Either remove blockage or replace burner. Blocked burner flame holes will create soot.

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