pump in hot water system

[ducati2242]

I have a split system , all cold taps fed from the mains . My hot water has a tank in the loft and a copper in the airing cupboard 2 meters below it .It is a vented system . I am going to install a stuart turner dedicated pump . My question is do I just install it directly to the tap line by just splitting the pipe after the T or will I have to fit an essex valve ? above the T on the vent side . Picture shows the tank with the hot Td to the vent and down to the tap feed . The one I want to install my pump into . Thanks Guy.

 

[Whyme]

Is it for a shower ? if so you need to fit an essex or a surrey valve on the hot and best to take a cold from the dhw expansion tank in the loft. ya dont really want mains cold an pumped hot to a shower. best to get a twin shower pump and take your cold feed from the tank in the loft. btw dont put a pump after the tee thats a no no.

 

[ducati2242]

Is it for a shower ? if so you need to fit an essex or a surrey valve on the hot and best to take a cold from the dhw expansion tank in the loft. ya dont really want mains cold an pumped hot to a shower. best to get a twin shower pump and take your cold feed from the tank in the loft. btw dont put a pump after the tee thats a no no.

I want to increase the pressure of my entire hot water supply . I think that I have caused my low pressure problems by fitting high pressure taps and shower for a low pressure system. My kitchen pressure is very low and my mixer tap will not work. I have 3 bar pressure at my cold taps but very low hot water probably .1 bar . The shower cold is not fed from the mains and fed from the loft tank. Where would I fit an inline pump if not on that hot line. Thanks Guy.

 

[Mike Jackson]

Follow the pump manufacturers instructions.

 

[PlumbBobBob]

what does the manufacturer recommend?

 

[stevetheplumber]

all the pumps ive seen recently have to have dedicated supplies

 

[ducati2242]

what does the manufacturer recommend?

The instructions seem a bit vague , so , I am going to fit a surrey flange to the top of my tank which will act as a vent and then I am going to fit the pump inline after the surrey flange near to bottom of the tank . This should allow the pump to vent to the tank and the tank to vent to the loft.
That is , of course, if I am not advised against this but I cant see any reason that it wont boost my hot water like this .
The pump ,of course, will only come on when water is flowing through it.

This is the diagram for fitting the inline pump from stuart turner .

My pump will then be fitted inline at the bottom of the copper . Very similar to the sketch.

 

[josh]

Excuse me if i'm wrong but i wouldnt have the whole house hot of that pump, not really a done thing and you want aleast one tap not pump'd still incase it packs up, won't the noise get on your nerves?

 

[ducati2242]

Excuse me if i'm wrong but i wouldnt have the whole house hot of that pump, not really a done thing and you want aleast one tap not pump'd still incase it packs up, won't the noise get on your nerves?

Well I only have four hot taps and none of them have much pressure . The noise wont bother me as it will only be there when the tap is running . If the pump did pack up the hot would still come out of the taps with out the pump working . So as long as there is no reason why I cant pipe it in like this I am going to try it. I have nothing to loose as it will only take me a couple of hours and can easily be reversed . I have all the fittings and have a pump on its way.

 

[josh]

They wouldnt if the check valve on the inlet seized. Your going to do it whatever anyone says on here so just do it.

 

[ducati2242]

They wouldnt if the check valve on the inlet seized. Your going to do it whatever anyone says on here so just do it.

Yeah I am going to do it and its not rocket science to join the two pipes back together if the pump or check valve failed . Unlike some though I will return to here to say yes it worked or no it didnt . If I have hot water pressure then great if not then its only cost a few quid.

 

[josh]

easy peasy mate, go do it.

 

[ducati2242]

easy peasy mate, go do it.

Thanks for all your help .?.

 

[Dannyparty92]

What's that picture of the four cylinders and the downward slope?

 

[ducati2242]

What's that picture of the four cylinders and the downward slope?

Thats the fitting instructions for using a stuart turner pump as an inline hot water pressure pump . First is their favoured method to last which is their least favoured method (hence the down ward slope). Thats why I was asking about plumbing it in as I thought it was a bit vague . It dosent even sugest where to plumb the pump back into the line.

Im going with the first suggestion and tapping back into the feed line after the pump. I will either put a gate valve below the T to the vent pipe or I will remove a section. I am going to try it first with downward ,45 degree , T from the top of the tank . If that fails then I will try it with an surrey valve out of the top of the tank but as air likes to rise I think that I will not need the surrey valve .

Page 6 on here.
https://docs.google.com/viewer?url=.../5289-Showermate-Standard-Single-and-Twin.pdf

 

[ducati2242]

easy peasy mate, go do it.

Yeah you were right it was easy and it worked . I now have 5.5 liters per minute as opposed to 2.4 liters a minute that I had . Thanks for your help. ?? . I know who not to ask in the future.

 

[wiggers]

I also have same problem hot pressure is poor on gravity fed indirect and would like to fit pump same area at base of cylinder
Question is do salamander have similar pump bout 1.7 bar and would this be enough pressure? and would shower pump work ok as they have a single ct55 at 1.7 bar, there is no shower in bungalow.
cheers