Installation Guide

16
INSPECTING BURNERS
Check pilot flame pattern and burner patterns
PILOT FLAME PATTERN
Figure 13 shows a correct pilot flame pattern.
Figure 14 shows an incorrect pilot flame pattern.
The incorrect pilot flame is not touching 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 14:
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Figure 13 Correct Pilot Flame Pattern
(Your pilot may vary from pilots shown)
Figure 14 - Incorrect Pilot Flame Pattern
(Your pilot may vary from pilots shown)
turn Gas Log Set off (see Turning OFF the Ap-
pliance page 15)
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.
• see Cleaning and Maintenance, this page
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 bur
ner flame holes will create soot.
MAIN BURNER
BURNER FLAME PATTERN
Figure 15 shows the correct burner flame patern.
Figure 16 shows the incorrect burner flame patern
.
turn Gas Log Set off (see Turning OFF the Ap-
pliance page 15)
•
• see Cleaning and Maintenance, this page
• see Troubleshooting, page 22
•
CLEANING AND MAINTENANCE
WARNING: Turn off Gas Logs and let
CAUTION: keep burner and control
ding material, etc.
WARNING: Failure to keep the primary air op-
everything cool before cleaning.
fore each use. Have heater inspected year-
ening of the burner clean may result in sooting and
Burner
Tube
Injector Holder (May
Be Brass or Aluminum
Depending on Model)
Primary Air Inlet Hole
(Shape and size of
holes may vary by model)
o
compartment clean. See installation and
operating instructions accompanying the
heater. Inspect these areas of heater be-
ly by a qualified service person. Heater
may need more frequent cleaning due to
excessive lint from carpeting, pet hair, bed-
property damage.
The correct burner flame pattern shows yellow tip-
ping at the top of a large blue flame. If burner flame
is incorrect, as shown in Figure 16:
Continued
Figure 15 - Correct Burner Flame Pattern
Showing Blue Fame With Yellow/White Tips
Figure 16 - Inorrect Burner Flame Pattern
Showing SolidYellow/Orange Flame
often.
Figure 17 - Burner Primary Air Hole