Vanguard SBJ18VNA Owner's Manual - Wiring Diagram
www.desatech.com
114744-01F
20
If burner flame pattern is incorrect, as shown
in Figure 26
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 18)
• see Troubleshooting, page 22
The flames from the burner travel horizontally
through the log set and emerge at the middle
and rear of the set against the back logs.
The flames are blue off the burner and as
they progress through the log set, change to
a light yellow color, yellow decorative flames
are visible as the flames exit the log set.
The base of the log set and the underside of
the top logs glow red. Natural gas models will
burn with more blue flame, while propane gas
model will burn with bright yellow flame.
Figure 25 - Correct Burner Flame Pattern
Figure 26 - Incorrect Burner Flame
Pattern
Blue and Bright
Yellow Flames
Darker
Orange
Flames
WIRING DIAGRAM
When Using Remote
AUTO
OFF
ON
Thermopile
INSPECTING BURNER
Figure 23 - Correct Pilot Flame Pattern
(Your pilot may vary from pilots shown)
Pilot Burner
Thermocouple
Figure 24 - Incorrect Pilot Flame Pattern
(Your pilot may vary from pilots shown)
Pilot Burner
Figure 27 - Connecting Remote Receiver
to Control Valve
Thermocouple
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 23 shows a correct pilot flame pattern.
Figure 24 shows an incorrect pilot flame pat-
tern. The incorrect pilot flame is not touching
the thermocouple. This will cause the thermo-
couple to cool. When the thermocouple cools,
the heater will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 24
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 18)
• see Troubleshooting, page 22
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.
BURNER FLAME PATTERN
Figure 25 shows correct burner flame pattern.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles are burned
by heater, causing brief patches