I have had my 20 or so year old Burnham RSM/98 boiler off since April. Now
I am seeing some water on the floor. Not much - about a cup a day.
I have heard that there is cast iron in older boilers that may leak when
cold. Is my only choice to turn it back on or is there a gasket or
something I can replace. Or since it is leaking now, am I now required to
I have not had it on because I have been practically out of oil since April
(Live in NH) and oil company wants a min of 150 gallons ($600). I couldn't
shell out the cash just to have it sit in the tank all summer so I am not
planning to get a delivery until about Sept/Oct.
RMB has the answer. The sections of a cast iron boiler have O-Rings
that expand when hot/warm and contract when cool. This is why your
leaking. Just for a test, start the boiler up for a few days and see
if the leaking stops.
Not always the case. If the boiler is considered a warm start boiler
then if turned off they can leak due to the O-Rings shrinking when
cold. As for a cold start boiler, this is not the case.
Anyways, was looking for OP to perform the suggested test.
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