Desa CF26PRA User Manual download pdf (Page 23)

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113897-01C

INSPECTING BURNERS

Check pilot ﬂame pattern and burner ﬂame pat-

terns often.

PILOT FLAME PATTERN

Figure 39 shows a correct pilot ﬂame pattern.

Figure 40 shows an incorrect pilot ﬂame pattern.

The incorrect pilot ﬂame is not properly heating

the thermocouple. When the thermocouple cools,

the heater will shut down.

If pilot ﬂame pattern is incorrect, as shown in

Figure 40

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

ance, page 21)

•

see Troubleshooting, page 25

Note: The correct pilot ﬂame on natural gas units

will have a slight curve, but ﬂame should be blue

and have no yellow or orange color.

Figure 39 - Correct Pilot Flame Pattern

(propane/LP ignitor shown)

Figure 40 - Incorrect Pilot Flame Pattern

(propane/LP ignitor shown)

Pilot Burner

Thermocouple

Pilot Burner

Thermocouple

BURNER FLAME PATTERN

Figure 41 shows a correct burner ﬂame pattern.

Figure 42 shows an incorrect burner ﬂame pattern.

If burner ﬂame pattern is incorrect,

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

ance, page 21)

• see Troubleshooting

, page

Figure 41 - Correct Flame Pattern with

Control Knob Set to High Flame

Figure 42 - Incorrect Flame Pattern with

Control Knob Set to High Flame

Approx. 3-6"

Above Top

of Logs

More Than

8" Above

Top of Logs

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.

CLEANING AND

MAINTENANCE

WARNING: Turn off heater

and let cool before cleaning.

CAUTION: You must keep

control areas, burner and circu-

lating air passageways of heater

clean. Inspect these areas of

heater before each use. Have

heater inspected yearly by a

qualiﬁed service person. Heater

may need more frequent clean-

ing due to excessive lint from

carpeting, bedding material, pet

hair, etc.

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