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Changing a kitchen tap - combi boiler system
mgns
Posts: 56 Forumite
Hi, I need to change the kitchen taps but haven't done any plumbing diy since we changed from a gravity to a sealed system. I would like some advice on the safest way of turning off the water - draining the water pipes - turning the water back on, so not to damage our newly installed Vaillant combi boiler.
There is only a mains stopcock and no isolating valves on the taps. Do I need to switch the boiler off or is turning the hot water temp to zero enough?
Thanks for your help.
mgns
There is only a mains stopcock and no isolating valves on the taps. Do I need to switch the boiler off or is turning the hot water temp to zero enough?
Thanks for your help.
mgns
0
Comments
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If it were me then id freeze the pipes and put isolating valves on both, always freeze on or just before a bend, that way it wont blow out ! do one then the other, dont do them both at the same time.
No worries then of draining down and refilling
You may click thanks if you found my advice useful0 -
You don't need t drain tyhe system down on a combi. Turn the boiler off at the mains. Turn off the main stopcock. Do the work (install isolating valves while you are doing it). When its done, turn the stopcock back on and then turn the mains back on.Eat vegetables and fear no creditors, rather than eat duck and hide.0
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You don't need t drain tyhe system down on a combi. Turn the boiler off at the mains. Turn off the main stopcock. Do the work (install isolating valves while you are doing it). When its done, turn the stopcock back on and then turn the mains back on.
is the right answer, simple enough job to do0 -
!!!!!! - freezing pipes at mains pressure is just such a bad idea and poor advice IMHO.If it were me then id freeze the pipes and put isolating valves on both, always freeze on or just before a bend, that way it wont blow out ! do one then the other, dont do them both at the same time.
No worries then of draining down and refilling
As stated just turn water off at the stop tap and follow Phils advice. Simples.
CheersThe difference between genius and stupidity is that genius has it's limits. - Einstein0 -
!!!!!! - freezing pipes at mains pressure is just such a bad idea and poor advice IMHO.
As stated just turn water off at the stop tap and follow Phils advice. Simples.
Cheers
Thats your opinion !, ive done it loads of times for repair work and never had one blow yet.You may click thanks if you found my advice useful0 -
Thanks to all for the advice.
I guess this is the plan:
1) Switch off Combi boiler via front panel.
2) Turn off mains water via internal stopcock.
3) Turn on kitchen taps to drain any water left in them.
4) Change taps.
5) Turn mains stopcock back on.
6) Run water through taps to check things are ok and clear any trapped air.
7) Switch boiler back on.
cheers
mgns0 -
Thanks to all for the advice.
I guess this is the plan:
1) Switch off Combi boiler via front panel.
2) Turn off mains water via internal stopcock.
3) Turn on kitchen taps to drain any water left in them.
4) Change taps.
5) Turn mains stopcock back on.
6) Run water through taps to check things are ok and clear any trapped air.
7) Switch boiler back on.
cheers
mgns
thats a good plan
http://www.ultimatehandyman.co.uk/diy_plumbing_replacing_basin_taps.htm
may be worth a read0
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