mads
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| posted on 28/10/12 at 07:19 PM |
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central heating plumbing question
evening all,
could someone have a look at the following pic and tell me what the purpose of the stopcock is in this setup? and should it be open or closed?
 
water pump
the top pipe in the pic comes from the 3-way actuator above the water pump and goes into the water tank. the bottom pipe also comes out of the water
tank but then feeds back into just above the water pump.
cheers,
mads
[Edited on 28/10/12 by mads]
We gain knowledge faster than we do wisdom!
Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in
sideways, thoroughly used, totally worn out and loudly proclaiming... "f*ck, what a trip!"
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tegwin
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| posted on 28/10/12 at 07:46 PM |
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Usually done as a balance valve to insure a minimum flow through pump etc even if all radiators are off. Usually set halfway between open and closed
depending on system
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Peteff
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| posted on 28/10/12 at 09:32 PM |
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You'd still get flow through the pump with the radiators off unless you were running a single pipe system. If it's closed you will get no
domestic hot water.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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adam1985
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| posted on 28/10/12 at 09:41 PM |
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Bypass if all rads are shut the pump will be pushing against it with nowhere to go should be slighty open.
Eta you would still get a flow on a 1 pipe system but not a conventional 2 pipe so wouldnt have this on 1 piper
[Edited on 28/10/12 by adam1985]
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mads
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| posted on 29/10/12 at 10:18 PM |
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thanks for the replies folks. so follow up question is, if this valve was fully open, should it affect the downstairs radiators and stop them getting
hot? that is what seems to have happened. I closed the valve fully and the bottom radiators are working again.
We gain knowledge faster than we do wisdom!
Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in
sideways, thoroughly used, totally worn out and loudly proclaiming... "f*ck, what a trip!"
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