Desa VSGF33NR Inspecting Burners, Optional Blower Operation, Pilot Flame Pattern, Main Burner

®

UNVENTED NATURAL GAS FIREPLACE

OPERATING

FIREPLACE

Continued

•In the AUTO mode, the thermostat in the hand-held remote unit con- trols the room temperature. To in- crease the room temperature, press the top arrow of the TEMP button. To lower the room temperature, press the bottom arrow of the TEMP button. At higher settings the heater will run longer.

IMPORTANT: This remote control has been specially engineered to take an air temperature sample ev- ery minute in the auto mode. It will not respond immediately to the temperature setting being turned up or down.

IMPORTANT: The hand-held re- mote 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 remote control unit will heat up too quickly and turn the heater off.

3.To turn the burner off, press the AUTO/ON/OFF button until OFF lights. The pilot will remain lit.

IMPORTANT: To turn the pilot off, manually turn the control knob on the heater to the OFF position.

OPTIONAL BLOWER

OPERATION

WARNING: This fireplace has a three-prong, grounded electri- cal plug. This plug helps protect you against electrical shock. Only connect plug to a properly grounded, three-prong recep- tacle. Do not cut or remove the grounding prong from this plug.

Locate the blower switch by opening lower louver on fireplace. Blower switch is lo- cated at lower left inside louver door.

The GA3700TA thermostat-controlled blower has a variable speed control with an ON/OFF switch. The blower will start when the thermostat senses a sufficient increase in firebox temperature. The GA3700 variable speed blower also has an ON/OFF switch built into the variable speed control.

Note for GA3700TA Only: If you are using GA3700TA 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.

Note: It is safe to operate fireplace with blowerturnedoff.However,theblowerhelps distribute heated air from the fireplace.

Follow installation instructions included with the blower accessory.

INSPECTING

BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 31 shows a correct pilot flame pat- tern. Figure 32 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 32

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

•see Troubleshooting, pages 18 through 20

Pilot Burner

Thermocouple

Figure 31 - Correct Pilot Flame Pattern

Pilot Burner

Thermocouple

Shows Temperature Setting

The Log Heater will Automatically Cycle between Pilot and the Heat Setting that has been Selected

Increases Room

Temperature in AUTO

Mode

Decreases Room

Temperature in AUTO

Mode

Turns Burners On or Off and Allows You to Choose the Auto Setting

Figure 32 - Incorrect Pilot Flame Pattern

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

Figure 30 - Thermostat Hand-Held Remote Control Unit Selections (GHRCT Series Only)

burner. Blocked burner flame holes may create soot.

For more information, visit www.desatech.com 16 107171