I have fitted a shower pump and connected it to the HW cylinder using
a surrey flange. When the hot taps elsewhere in the house are turned
off the pump activates for half a second. Any suggestions how to cure
this please?

yogi wrote:
I have fitted a shower pump and connected it to the HW cylinder using
a surrey flange. When the hot taps elsewhere in the house are turned
off the pump activates for half a second. Any suggestions how to cure
this please?

You might find a water hammer arrestor fitted on the feed to the taps
will help.

--
Cheers,

John.

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On Sun, 16 Mar 2008 02:31:59 -0700, yogi wrote:

I have fitted a shower pump and connected it to the HW cylinder using a
surrey flange. When the hot taps elsewhere in the house are turned off
the pump activates for half a second. Any suggestions how to cure this
please?

Is this a negative or positive head pump. (i.e. has it a pressure or flow
operated switch).


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html

On Mar 16, 10:14*pm, Ed Sirett wrote:
On Sun, 16 Mar 2008 02:31:59 -0700, yogi wrote:
I have fitted a shower pump and connected it to the HW cylinder using a
surrey flange. When the hot taps elsewhere in the house are turned off
the pump activates for half a second. Any suggestions how to cure this
please?

Is this a negative or positive head pump. (i.e. has it a pressure or flow
operated switch).

--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is athttp://www.diyfaq.org.uk
Gas fitting FAQ *http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQhttp://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQhttp://www.makewrite.demon.co.uk/BoilerChoice.html

It's a positive. It's a Salamander RSP50 pump.

In article ,
yogi writes:
On Mar 16, 10:14*pm, Ed Sirett wrote:
On Sun, 16 Mar 2008 02:31:59 -0700, yogi wrote:
I have fitted a shower pump and connected it to the HW cylinder using a
surrey flange. When the hot taps elsewhere in the house are turned off
the pump activates for half a second. Any suggestions how to cure this
please?

Is this a negative or positive head pump. (i.e. has it a pressure or flow
operated switch).

It's a positive. It's a Salamander RSP50 pump.

I suspect you've got a deadleg with air in it after the pump.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

"yogi" wrote in message
...
I have fitted a shower pump and connected it to the HW cylinder using
a surrey flange. When the hot taps elsewhere in the house are turned
off the pump activates for half a second. Any suggestions how to cure
this please?

Put pump on floor of airing cupboard and fit an automatic air release valve
on hot input leg. Been there done that with a pump first installed in the
loft and then moved to a shelf in airing cupboard and finally fitted in the
correct place as per all the shower pump installation instructions I have
seen, on floor of airing cupboard next to hot tank. When installed as per
instructions worked fine no bursts when bath run and no air in pump when
shower run.