Northy
|
| posted on 4/1/06 at 07:31 PM |
|
|
Plumbing problem getting worse
Well my plumbing problem is getting worse. Here's a link to the old thread:
http://www.locostbuilders.co.uk/viewthread.php?tid=36452
Now if you turn the hot tap on in the kitchen and turn it off quickly the shower pump "pulses" on and off. It's even started doing
it with the bathroom taps! 
If you turn the tap off slowly it only does it once.
Is the pump on the way out?
Cheers,
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing! 
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
|
|
|
|
|
johnemms
|
| posted on 4/1/06 at 07:45 PM |
|
|
air lock in the system ...
mine was simple.. the kitchen tap washers needed replacing.. 2 nd time since we have lived here.. however.. the noise would come from the bathroom!!
in your case its the hot water mine was cold water job but must be similar effect..
|
|
|
Markp
|
| posted on 4/1/06 at 08:26 PM |
|
|
dead leg on the hot water system some where???
Shouldn't the shower be fed from the cylinder via a essex or surrey flange to the pump so it doesn't use the main hot water supply. if the
pump comes on with the hot water then I would asume it's piped up wrong
I have attatched a pic, bit rubbish but you should get the jist.
 
Rescued attachment shower.jpg
|
|
|
dnmalc
|
| posted on 4/1/06 at 08:46 PM |
|
|
Markp's diagram should also identify that the feed to the hot tank should also be increased to 28mm as if it is left at 22mm you are likely to
cause water hammer effects
|
|
|
Markp
|
| posted on 4/1/06 at 08:56 PM |
|
|
sorry
|
|
|
Northy
|
| posted on 5/1/06 at 05:53 PM |
|
|
Er..... you've lost me guys
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
|
|
|
geoff shep
|
| posted on 5/1/06 at 07:21 PM |
|
|
The shower circuit should have a dedicated supply, not because it's a shower, but because it is pumped. Water normally flows out of the hot
tank by gravity - the head being the height of the cold tank in the loft. The pump effectively sucks water out of the hot tank and can draw air into
the system. It should be fed from a dedicated supply pipe which usually extends someway down into the tank rather than just drawing off the top. The
essex flange is as above, the surrey and warix flanges may be more difficult to spot as they are concentric with the normal feed at the top of the
tank Flanges
The pump turns itself on when it senses a pressure drop ie letting water out of the shower so if it does it when you play with other taps does that
indicate some untoward connection between non-shower pipes and the pump circuit?
PS - I'm not a plumber
Found an old bookmark for THIS
HERE'S another one.
[Edited on 5/1/06 by geoff shep]
[Edited on 5/1/06 by geoff shep]
|
|
|
Ferg
|
| posted on 6/1/06 at 03:45 PM |
|
|
quote:
Originally posted by geoff shep
The pump turns itself on when it senses a pressure drop
No. It senses flow with a simple magnetic shuttle and reed switch. I definately
sounds like the hot is teed into the whole house hot supply and you're getting a tremor from a tap setting up water hammer. Try a check valve on
the inlet to the pump.
[Edited on 6/1/06 by Ferg]
|
|
|
