I have maintenance contract with gas board for Central heating system but
this does not cover flushing out and I believe that this is a costly
operation to have gas board do it.My upstairs radiators are very slow to
heat up and I think flushing out would help to get better flow.Was thinking
of just opening discharge valve and draining out the system and topping it
up again,of course releasing air in the radiators at the same time.Can there
be any problem in doing this?
My system is fully pumped with Baxi Bermuda boiler
I would appreciate any help with this .
Depends how bad the problem is. Flushing the system with clean water
till it ran clear worked for me, although some of the sediment in the
well of each radiator will remain. A British Gas engineer told me that
their power flushing is a waste of time and money, and that the only way
to completely drain the system was to remove each radiator in turn and
flush it through. Not a 5 minute job. I presume you have already
checked for air locks and that the pump is OK.
try some heavy duty fernox cleaner and drain off whilst hot, drain a rad and
put it in there and not in the header tank. as the other post is it
balanced,what about any bypass, is it fully open, try closing it then
cracking back open a couple of turns
Im not sure that I know about the radiators being balanced ,and ,where
would a bypass valve
used..The pump appears to be ok as the gas board fitters have not said that
there is anything wrong
Thanks for replies.
Not sure what British Gas do but I was pretty impressed with the Power
Flushing that my system had from an independent engineer before a boiler
replacement.. The engineer took about five hours as each radiator is
flushed individually and several flushes were hot and on one of the hottest
days of the year the guy was running up and down the stairs to the various
rooms closing and opening valves and checking flow and sediment and
changing solutions in the powerflush system etc. Not sure what it cost but
it certainly ended up with a clean system and he certainly worked pretty
hard at it.
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