Vanguard Heating VYGF33NRA Inspecting Burners, Optional Blower Operation, Pilot Flame Pattern

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UNVENTED NATURAL GAS FIREPLACE

OPERATING

FIREPLACE

Continued

•In the ON mode, the burners will ignite. The heater is in manual mode when ON is lit.

•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

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

The GA3700T Series thermostat-con- trolled blower has a variable speed con- trol 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 vari- able speed control.

Note for GA3700T Series Only: If you are using GA3700T blower, 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 blower will con- tinue 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 29 shows a correct pilot flame pattern. Figure 30 shows an incorrect pilot flame pattern. The incorrect pilot flame is not prop- erly heating the thermocouple. When the thermocouple cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 30

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

•see Troubleshooting, pages 17 through 19

Pilot Burner

Thermocouple

Figure 29 - Correct Pilot Flame Pattern

Pilot Burner Thermocouple

Figure 30 - Incorrect Pilot Flame Pattern

BURNER PRIMARY AIR HOLES

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

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

Figure 28 - Thermostat Hand-Held Remote Control Unit Selections (GHRCT Series Only)

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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