Thermostat Control Operation | Desa 10542 specification

OPERATING HEATER

Continued

6.With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached to the front of the burner. If needed, keep pressing igni- tor button until pilot lights.

Note: If pilot does not stay lit, refer to Troubleshooting, page 20. 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 sec- onds after lighting pilot. After 30 seconds, release control knob.

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

Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety inter- lock system. Wait one (1) minute before lighting pilot again.

8.Turn control knob counterclockwise to desired heating level. The main burner should light. Set control knob to any heat level between 1 and 5.

CAUTION: Do not try to ad- just heating levels by using the equipment shutoff valve.

Thermocouple

Ignitor Electrode

Pilot Burner

Figure 22 - Pilot (actual pilot may vary)

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1.Turn control knob clockwise to the OFF position.

2.Turn off all electric power to the appliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

Turn control knob clockwise to the PI- LOT position.

THERMOSTAT CONTROL

OPERATION

The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. 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 1 and 5. Selecting the 5 setting will cause the burner to remain fully on without modulating down in most cases.

Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room tempera- ture (depending on housing construction, instal- lation location, room size, open air tempera- tures, 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 9).

2.Follow steps 1 through 5 under Lighting In- structions, page 16.

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

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

5.Replace front panel.

6.Follow step 8, under Lighting Instructions, page 16.

113680-01A

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10542 specifications

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Desa 10542 installation manual Thermostat Control Operation

Models: 10542