Desa FGH-30NGB Operating Heater, To Turn OFF GAS To Appliance, Thermostat Control Operation

BLUE FLAME NATURAL GAS HEATER

OPERATING

HEATER

Continued

THERMOSTAT MODELS FAS-20BB AND FAS-30BB

LIGHTING

INSTRUCTIONS

1.STOP! Read the safety information column 3, page 11.

2.Make sure equipment shutoff valve is fully open.

3. Turn control knob clockwise Clockwise to the OFF position.

4.Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Fol- low “B” in the safety information in column 1. If you don’t smell gas, go to the next step.

5.Turn control knob counterclockwise

C-clockwiseto the PILOT position.

Press in control knob for five (5) sec- onds (see Figure 16).

Note: You may be running this heater for the first time after hook- ing up to gas supply. If so, the con- trol knob may need to be pressed in for 30 seconds. This will allow air to bleed from the gas system.

•If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs.

6.With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached to the front of burner. The pilot can be seen through the glass panel. If needed, keep pressing ignitor button until pilot lights.

Ignitor Button		Control Knob
	PILOT	LO
	OFF
	HI

Figure 16 - Control Knob In The OFF Position

Note: If pilot does not stay lit, refer to Troubleshooting, pages 15 through

17.Also contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure.

7.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.

• If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs.

Note: If pilot goes out, repeat steps

3through 7. Wait one (1) minute be- fore lighting pilot again.

8.Turn control knob counterclockwise

C-clockwiseto desired heating level. The main burner should light. Set control

knob to any heat level between HI and LO.

CAUTION: Do not try to adjust heating levels by using the equip- ment shutoff valve.

Ignitor Electrode

Thermocouple Pilot Burner

Figure 17 - Pilot

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1. Turn control knob clockwise Clockwise to the OFF position.

2.Turn off all electric power to the ap- pliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

Turn control knob clockwise Clockwise to the PILOT position.

THERMOSTAT

CONTROL

OPERATION

The thermostatic control used on these models differs from standard thermo- stats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room tem- perature. The thermostat adjusts the amount of gas flow to the burner. This increases or decreases the burner flame height. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any heat level between HI and LO. Selecting the HI setting will cause the burner to remain fully on without modu- lating down in most cases.

Note: The thermostat sensing bulb mea- sures the temperature of air near the heater cabinet. This may not always agree with room temperature (depending on housing construction, installation loca- tion, room size, open air temperatures, etc.). Frequent use of your heater will let you determine your own comfort levels.

MANUAL LIGHTING

PROCEDURE

1.Remove front panel (see Figure 7, page 8).

2.Follow steps 1 through 5 under Light- ing Instructions .

3.With control knob pressed in, strike match. Hold match to pilot until pi- lot lights.

4.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Follow step 8 under Lighting Instructions, column 2.

5.Replace front panel.

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