Hello all,
I have trawled the forums here, but cannot find an answer to my possibly unique situation??
I have recently moved into a new home, and have been troubled by air in the heating system. Basically filling a couple of first floor rads, which I've bled every few weeks (so system is probably water only now, no inhibitor, if there ever was any!). This air also causes periodic noise in the airing cupboard as it 'surges' through the pump, and can sometimes be heard bubbling through the rads.
I checked the f/e tank and found to be operating correctly i.e. draws in when bleeding rads, level covers feed outlet when cold/off, doesn't seem to pump over when in operation. I tested the vent with jar of water, and there is a slight pressure disturbance when the pump is started, though no water was taken or returned to jar.
I cannot find a leak anywhere on the system.
So I took the next course of action, and contracted a British company specialising in Gas, to attend under a fix&maintain type Homecare contract.
The boiler (Ideal Classic, ~10y/o) was serviced and found to be in good order. The source of air was decided to be the vent pipe on the f/e tank, and this was subsequently chopped off and 'capped', and a powerflush was recommended.
The two issues I guess I have now are:
...that a 600 quid powerflush will probably improve the system, due to the inevitable corrosion (there is some noticable in the f/e tank). But I'm aware this may cause other issues, pinholing etc. And this still doesn't resolve the 'source of air' issue, I don't believe.
...but perhaps more seriously, I no longer have a vent, so this becomes a feed tank only, as I see it! I questioned the engineer by phone, and was told that as the feed pipe is 22mm, this is sufficient to provide the venting functionality (according to the regs). Is this true? I cannot find anything about these 'regs', and I'm concerned that the 'cap' (a white plastic cap attached to the recently chopped off vent pipe, below the water level of the f/e tank) may leak or worse, come off completely under regular temperature/pressure fluctuations.
Sorry for the long-winded explanation, but if you can help, I'm sure you'd be happier with the full details. I appreciate the time taken to read this.
Thank you.
Paul
I have trawled the forums here, but cannot find an answer to my possibly unique situation??
I have recently moved into a new home, and have been troubled by air in the heating system. Basically filling a couple of first floor rads, which I've bled every few weeks (so system is probably water only now, no inhibitor, if there ever was any!). This air also causes periodic noise in the airing cupboard as it 'surges' through the pump, and can sometimes be heard bubbling through the rads.
I checked the f/e tank and found to be operating correctly i.e. draws in when bleeding rads, level covers feed outlet when cold/off, doesn't seem to pump over when in operation. I tested the vent with jar of water, and there is a slight pressure disturbance when the pump is started, though no water was taken or returned to jar.
I cannot find a leak anywhere on the system.
So I took the next course of action, and contracted a British company specialising in Gas, to attend under a fix&maintain type Homecare contract.
The boiler (Ideal Classic, ~10y/o) was serviced and found to be in good order. The source of air was decided to be the vent pipe on the f/e tank, and this was subsequently chopped off and 'capped', and a powerflush was recommended.
The two issues I guess I have now are:
...that a 600 quid powerflush will probably improve the system, due to the inevitable corrosion (there is some noticable in the f/e tank). But I'm aware this may cause other issues, pinholing etc. And this still doesn't resolve the 'source of air' issue, I don't believe.
...but perhaps more seriously, I no longer have a vent, so this becomes a feed tank only, as I see it! I questioned the engineer by phone, and was told that as the feed pipe is 22mm, this is sufficient to provide the venting functionality (according to the regs). Is this true? I cannot find anything about these 'regs', and I'm concerned that the 'cap' (a white plastic cap attached to the recently chopped off vent pipe, below the water level of the f/e tank) may leak or worse, come off completely under regular temperature/pressure fluctuations.
Sorry for the long-winded explanation, but if you can help, I'm sure you'd be happier with the full details. I appreciate the time taken to read this.
Thank you.
Paul
It ain`t rocket science but there are hundreds done wrong. You don`t need a Gas Safe engineer unless the boiler needs touching. Get it piped right - then consider a powerflush. Not in E. Sussex are you 
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