Dunkirk EXCELSIOR EXB4075 Installation, Operation & Maintenance Manual page 17

Figure 14 - Circulator Wiring
BLACK
TO
YELLOW
NOTICE
Ensure all conduit is secured to prevent contact with
flue pipe
Figure 15 - Limit Control Wiring
BLACK
WIRE TO
L1
CIRCULATOR
WIRING
Figure 16 - Drain Valve
8 - BOILER ASSEMBLY
GREEN TO
GROUND
SCREW
THERMAL/
C1, C2
B. Use hand wrench to tighten door hardware and start
with non-hinged side. Use alternating tightening
method from non-hinged side to hinged side to
tighten door equally until sealed without applying
excessive torque. Never tighten hinged side flange
bolt first or tighten either piece of hardware 100%
without using alternating tightening method
described above.
When securing burner swing door, make sure door is
drawn-in equally on both sides.
Failure to follow the prescribed procedure could
cause thread damage to casting or a leak in the
door seal. If hinged side is tightened before the
unhinged side, the hinged side of door cannot
WHITE
be drawn to provide an air-tight seal. Applying
TO
WHITE excessive torque will only cause thread damage.
20.
Install oil burner.
• Check oil nozzle in burner for size, angle and type,
inspect electrode settings, check head setting, check air
band and air shutter settings. See "Oil Burner, Nozzle,
& Air Settings" on page 49.
• DO NOT install burner without gasket. Place oil burner
gasket on face of burner swing door with 4 burner
flange bolts installed part way.
LWCO
• Align round part of key hole slots of burner flange with
WIRE
burner door bolts. Turn burner to lock in place.
PIN
• Tighten all 4 cap screws using diagonal sequence.
• Plug burner power cord into burner harness.
• Attach flexible oil hose included in parts box.
RED
WIRE
TO B1
WHITE
WIRE TO
B2
DRAIN
VALVE
17
NOTICE