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BURNER DRAWER
The burner is adjusted at the factory with initial settings for
this application. These settings may be different than the
initial values in the chart, these positions are based on test
firing and should be used.
The burner drawer must be inspected to insure that the
components have not shifted or come loose during transit
or installation. The burner drawer access cover must be
removed to perform this inspection. The following is a list of
checks that should be done.
• The scanner tube should go through the diffuser and
extend about 1/8" past the diffuser.
• The diffuser should not be crooked and must have the
same spacing to the gas spuds throughout its
circumference.
• The pilot should be about 1/2" behind the diffuser,
adjacent to the scanner tube, so that the pilot flame will
flow in front of the scanner. (Dim. B)
• The ceramic blanket must be in position between the
front of the gas housing and refractory, all the way
around.
Dim.
Initial
Range
Setting
A
1/4"
0"- 1 1/2"
B
1/2"
None
C
1/4"
1/8" - 1/2"
D
3 1/2"
None
Figure E-2 Burner Drawer
Setup Dimensions
(See Figure E-1 for "Dim")
JBE(X) Manual
MOUNTING FLANGE
PILOT
GAS LINE
CONNECTION
BLOWER HOUSING
Figure E-1
Burner Drawer Setup
Description
Diffuser to gas spud
Diffuser to pilot
Diffuser to nozzle
Pilot to scanner
Page 35
GAS SPUDS
A
DIFFUSER
OIL NOZZLE
D
C
B
• The word "TOP" should appear on the top of the oil
gun, on the outside of the backplate.
3. Motor Rotation
The combustion air fan and pump motors must be
checked for proper rotation. The motors can be mo-
mentarily powered by pressing the mechanical actuator
on the starter. This should be done with a wood block
for insulation value.
The combustion air fan rotation is marked with an
arrow on the windbox. The rotation can be observed
within the motor to verify correct rotation, or if this is
not accessible, the burner drawer can be removed
to directly observe the fan. The oil pump has a slot
between the motor and pump where the rotation can
be observed. An arrow on the pump shows the correct
rotation. The direct drive air compressor can rotate in
either direction, but belt driven compressor must rotate
as the arrow indicates.
4. Fuel, FGR and Air Control
The fuel and air valves have initial positions set at the
factory. Differences in air density, fuel properties and
supply pressure will require tuning of the burner. The
initial positions of the air damper, FGR valve, gas valve
and oil valve should be adequate to support the start-
up process, but must be checked so that movement
did not occur during shipment or installation. If this is a
linkage burner, the linkage should be adjusted to allow
for modulation from low to high fire, with each valve
opening 45 to 90 degrees. This should be checked by
one of the two methods below.
FLAME SCANNER
Section E - Preliminary Adjustments
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