23
CONDITION #4 continued …
• WATER ON FLOOR AT REAR OF BOILER (AM-300)
POSSIBLE CAUSE
VERIFICATION
SOLUTION
Condensate Fitting & Tubing
Check condensate fitting & tubing.
Tighten,or replace fitting/tubing.
Flue Box Gasket
Check for moisture at flue box
If wet, replace gasket following
attachment to rear plate on
packaged instructions.
economizer.
Flue Box Adapter
Check for moisture at flue pipe
If joint/vent pipe has leak, repair it.
connection to flue box. If wet, check
for condensate drainage above flue
If leaking at flue box adapter,
box.
see “Procedures” section of this
manual under “Repairing Flue Box
Adaptor”.
Flue Box
Check flue box for cracks & holes.
If crack/holes, replace flue box
(with or without adapter) following
instructions pack - packaged with
replacement.
Pipe Attachments
Check Supply/Return water,Relief
Tighten or replace components as
Valve and Hi-limit connections.
necessary. Relief valve discharge
should be piped to floor drain.
• CONDENSATE DRAINS AFTER BOILER SHUTS OFF
NOTE: It is not unusual for condensate to drain from boiler for several minutes (maximum of 15 minutes), after
boiler shuts down. Amount of condensate depends chiefly on boiler operating conditions, however, flue configura-
tion and ambient conditions, are all factors in the amount of condensate accumulated in the flue box and the
drainage rate from exhaust piping systems.
POSSIBLE CAUSE
VERIFICATION
SOLUTION
Boiler Leak
(1) Pressurize boiler, bank of boilers
If pressure remains same & flow
or system as determined by
from condensate drain ceases,
installation, to its normal
boiler is ok.
operating pressure.
(2) Turn power OFF & close return
If pressure drops & flow from
& supply valves of boiler/banks
condensate drain continues, there
of boilers; or shut-off system
is boiler leak. Disassemble boiler,
automatic & manual fill valves.
per “Servicing” instructions described
(3) Observe boiler or system
in this manual, pinpoint leak and
pressure during a 15-20 minute
replace leaking components.
OFF period.
