OPERATING HEATER

To Turn Off Gas To Appliance Manual Lighting Procedure

INSPECTING BURNERS

Pilot Flame Pattern

Burner Primary Air Holes

Main Burner

17

OPERATING HEATER

Continued

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

Thermocouple Pilot Burner

Thermocouple Pilot Burner

1.

Press in and turn control knob clockwise

Clockwise

to the

 

 

HI position.

 

 

 

2.

Turn the control knob clockwise Clockwise

to the PILOT

 

 

position.

 

 

 

3.

Press in control knob and turn clockwise

Clockwise

to the Figure 33 - Correct Pilot Flame

Figure 34 - Incorrect Pilot Flame

 

OFF Position.

 

Pattern (Propane/LP Shown)

Pattern (Propane/LP Shown)

Shutting Off Burners Only (pilot stays lit)

1.

Turn the control knob clockwise Clockwise to the HI position.

2.

Press in and turn control knob clockwise Clockwise to the

 

PILOT position.

MANUAL LIGHTING

PROCEDURE

1.Follow steps 1 through 5 under Lighting Instructions, page 16.

2.Pilot is located inside stove cavity attached to burner. Lift off top grate to allow access to pilot.

3.Depress control knob and light pilot with match.

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

5.Place top grate back into position. Now follow step 8 under Lighting Instructions, page 16.

INSPECTING BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

(Remote-Ready Models)

Figure 33 shows a correct pilot flame pattern. Figure 34 shows an incorrect pilot flame pattern. The incorrect pilot flame is not heating the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 34

turn heater off (see To Turn Off Gas to Appliance, page 14

see Troubleshooting, pages 19 through 21

Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

(Variable-Manual Control Models)

Figure 35 shows a correct pilot flame pattern. Figure 36 shows an incorrect pilot flame pattern. The incorrect pilot flame is not heating the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 36

turn heater off (see To Turn Off Gas to Appliance, column 1)

see Troubleshooting, pages 19 through 21

Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

Thermocouple

 

Pilot Burner

Pilot Burner

Thermocouple

 

Figure 35 - Correct Pilot

Figure 36 - Incorrect Pilot

Flame Pattern (Propane/LP

Flame Pattern (Propane/LP

Shown)

Shown)

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 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 become blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Remove blockage. Blocked burner flame holes will create soot.

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Desa SVYD18NR, SVYD18N, SVYD18N, SVYD18NR Inspecting Burners, Pilot Flame Pattern, Burner Primary AIR Holes, Main Burner