Crown Bermuda Installation Manual

37
37
24 volts across 1 & 4
(blue&yellow) and
2 & 4
(orange&yellow ) on
damper end of
harness?
N
Y
Main
burners
light?
24 volts across
red damper lead
and yellow
transformer lead?
* Refer ignition system
troubleshooting chart
(page 38).
* Defective damper
* Defective or loose
damper harness
* Obstruction in
path of damper
blade
24 volts across
standing pilot gas
valve terminals or
terminals
5 & 6 on
S8600 module?
24 volts
across spill
switch?
* Chimney blockage
* Chimney system not
contructed in accordance
with Parts 7 and 10 of
National Fuel Gas Code.
* Down draft
* Inadequate combustion air
supply in boiler room
Y
N
Y
24 volts
across rollout
switch?
* Loose electrical
connection in spill
switch or rollout
switch wiring or gas
valve common
* Rollout switch open.
Replace with exact
replacement (see parts
list). Check for blocked
heat exchanger.
Y
N
N
YN
Do burners shut
down when water
level drops below
cut-off point?
END
*LWCO float bowl filled with
mud
* Defective LWCO
DO NOT OPERATE BOILER
UNTIL THIS PROBLEM IS
CORRECTED
Do burners
shut down when
pressure
exceeds limit
setting?
* Defective
pressure limit
control
* Blockage in
siphon tube
Y
Y
N
N
* Defective or
loose damper
harness
* Defective or loose
damper harness
* Defective damper
motor
* Obstruction in path
of damper blade
N
Y