Design-dynamics VTD-18N-PDG Manual de usuario descargar pdf (Pagina 13)

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111826-02J 13

INSPECTING BURNERS

Check pilot ame pattern and burner ame pat-

terns often.



Figure 14 shows a correct pilot ame pattern.

Figure 15 shows an incorrect pilot ame pattern.

The incorrect pilot flame is not touching the

thermocouple. When the thermocouple cools, the

heater will shut down.

If pilot ame pattern is incorrect, as shown in

Figure 15

• turn heater off (see To Turn Off Gas to Appli-

ance, page 12)

• see Troubleshooting, page 15

Note: The pilot ame on natural gas units will

have a slight curve, but ame should be blue and

have no yellow or orange color.

Figure 15 - Incorrect Pilot Flame Pattern

(Your Pilot May Differ from Pilots Shown)

Figure 14 - Correct Pilot Flame Pattern

(Your Pilot May Differ from Pilots Shown)



Figure 16 shows correct burner ame pattern.











If burner ame pattern is incorrect, as shown in

Figure 17

• turn appliance off (see To Turn Off Gas to Ap-

pliance, page 12

• see Troubleshooting, page 15

Figure 16 - Correct Burner Flame Pattern

Figure 17 - Incorrect Burner Flame

Pattern

Pilot Burner

Thermocouple

Thermocouple

Pilot Burner

Thermocouple

Thermocouple

Yellow Flames

with Orange

Streaks

Dark Orange

Flames

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 23 24

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