Burnham V8 Series User Manual
Page 28
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Step 4. From this position the door can be swung
clear of the vertical circulator return piping to
provide full access to the combustion chamber
and burner head (see Figure 11B, Position 3).
2. Perform routine inspection, service or cleaning as
necessary.
3. To close Burner Swing Door (see Figures 11A and
11B):
Step 1. From the fully open position, rotate Burner
Swing Door toward the closed position. Make
sure that the articulated hinge is rotated to the
extreme left position to allow the door to clear
the vertical circulator return piping as shown in
Figure 11B, Position 2.
Step 2. Grasp the door's left side hinge fl ange
in your left hand and place your right hand
under the burner air tube to lift upward. Lift
the door up unto the built-in cast ramp/door
rest (protruding from the bottom of the front
section casting - see Figure 11A), while rotating
the articulated hinge and door to the right and
engaging the slot (on right side of door) unto the
5/16" stud protruding from the front section.
Step 3. Use one hand to help hold door in position
by lifting up on rear burner housing or applying
pressure directly to the door while re-installing
the securing hardware with your opposite hand.
Always install right side latching hardware
(5/16" fl ange nut and fl at washer) fi rst, then
install left side hinge hardware (5/16" x 3-
1/2" lg. hex head fl ange bolt) second. Apply
additional pressure while hand tightening the
hardware as far as possible, then release the
pressure.
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Step 4. Use a hand wrench to tighten door hardware
and always start with the right side fl ange
nut fi rst. Use an alternating tightening method
from right side fl ange nut to left side fl ange
bolt to tighten door equally until sealed without
applying excessive torque. Never tighten left
side fl ange bolt fi rst or tighten either piece of
hardware 100% without using the alternating
tightening method described above.
Failure to follow the prescribed procedure could
cause thread damage to casting or a leak in the
door seal. If left side fl ange bolt is tightened
before right side fl ange nut, right side of door
can not be drawn-in to provide an air tight seal,
as shown in Figure 11C. Applying excessive
torque will only cause thread damage.
Figure 11C: Top View - Burner Swing Door Fully Closed but Not Properly Secured or Sealed