28
CONDITION 5e - OBJECTIONABLE (LOCALIZED) NOISE - STEADY-STATE
POSSIBLE CAUSE
VERIFICATION
SOLUTION
Exhaust Line Leak
Check exhaust vent line, joints &
Repair or replace as necessary with
connections to boiler.
“SCH-40” CPVC parts.
“O” Ring between Boiler &
With the boiler running for 5-minutes;
If a leak is suspect, remove lower
Exhaust Cushion Chamber
feel around the jacket about 3"
jacket panel. Restart boiler and
(ECC)
below the lower jacket panel seam
locate exhaust leak.
for “hot spots”. This is an indication
(AM-100/-150)
of internal gasket leakage.
If confirmed - replace “O” ring. See
replacement instructions under
“Procedures” section. Replace
jacket panel.
Gasket between Boiler &
With the boiler running for 5-minutes,
If noise/hot spot is suspect, remove
Economizer
check boiler sides/rear about 15"
jacket & insulation. Check gasket for
from jacket bottom for noise or hot
leaks. If leaking, replace gasket
(AM-300)
spots (as opposed to other areas).
following instructions packaged
with replacement.
NOTE: Remove the top access panel.
If noise/hot spot is not confirmed,
If there is moisture on top insulation
proceed with verification.
or on top of A.C.C., a gasket leak is
probable.
To check for noise at boiler front,
remove lower front panel.
Flue Box-To-Economizer
Check if gasket is deteriorated or
If deteriorated or blown out, replace
Gasket
blown out.
gasket following instructions
(AM-300)
packaged with replacement.