Install Instructions

25
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 13B, Position 3).
2. Perform routine inspection, service or cleaning as
necessary.
3. To close Burner Swing Door (see Figures 13A
and 13B):
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 13B, Position 2.
Step 2. Grasp the door's left side hinge 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 13A), 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" ange nut and at washer) rst, then
install left side hinge hardware (5/16" x 3-1/2"
lg. hex head ange bolt) second. Apply
additional pressure while hand tightening the
hardware as far as possible, then release the
pressure.
Figure 13A: Partial Front View - Burner Swing Door Mounted to Boiler - Fully Closed and Secured
NOTICE
When securing burner swing door make sure door
is drawn-in equally on both sides.
Step 4. Use a hand wrench to tighten door hardware
and always start with the right side ange
nut rst. Use an alternating tightening method
from right side ange nut to left side ange
bolt to tighten door equally until sealed without
applying excessive torque. Never tighten left
side ange bolt 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 ange bolt is tightened
before right side ange nut, right side of door
can not be drawn-in to provide an air tight seal,
as shown in Figure 13C. Applying excessive
torque will only cause thread damage.
E. INSPECT COMBUSTION CHAMBER TARGET
WALL AND LINER, AND SWING DOOR
GASKET.
1. Open burner swing door using procedure previously
outlined in Paragraph D of this section.
2. Using a ashlight, inspect the rear target wall and
liner. The target wall should be rigidly secured to
the rear boiler section. The combustion chamber
liner should be evenly distributed in the boiler
chamber. If either is damaged, they must be
replaced.
SECTION IV: PACKAGED BOILER ASSEMBLY (continued)