Pumped Return Hw

[NozSpark]

I'd just finished doing the 1st fix alterations and additions on a large house,,, its being gutted! and the plumbers have asked me to wire the boiler controls (S plan using a wireless stat) as well as a pumped return on the HW so that the owners don't have to wait long for HW at the taps..

Sounds great, but how are these pumps wired? Do they have any controls or do they run 24/7?

 

[Sharpend]

I've just done a similar thing. The one I did had a timer on the pump so just wired the pump direct to a fused spur.

 

[batty]

The ones I have done I have always put a timer in, if they are running 24/7 they will fail after a few years and I always think people won't want to hear water flowing in the middle of the night.

 

[steptoe]

as canoe

Ive done a load of these,

doesnt take long for a CALL BACK TO HAVE IT SWITCHED OFF

 

[NozSpark]

When they start to realise the electric bill of pumping this dead leg round then they will turn it off and decide to wait am few minutes for the water to get hot !!

I don't think money is an issue

 

[SLIPSHOD & SLAPDASH]

Same as above  ,,,  This pump should be a bronze bearing  type which does last. However even on one of my fairly recent jobs where money doesnt (didnt) matter this pump has gone from on 24/7 to times on for 5 hours a day to off. We have also fitted standard type time clocks to the boiler to turn off even though its all underfloor heating that should be left on .

 

[Richard-the-Ninth]

The more money they have in general the tighter they are :slap

The usual give away is in a cupboard you will find loads of plastic carrier bags and lamps

 

[Steve3948]

You can actually buy the bronze pump with the time clock built in, so no need for separate clock.

Although the plumber may put it in such a way you cannot see it or get to it even though they supplied it.

 

[batty]

I find it hard to believe a plumber would make it difficult for a spark to do his job they are always so helpful.

 

[ProDave]

The more money they have in general the tighter they are :slap

Shame that doesn't work in reverse. I'm so tight I should be rich.

 

[NozSpark]

I find it hard to believe a plumber would make it difficult for a spark to do his job they are always so helpful.

Here's a couple of gems I got from him the other day....

He's never fitted a macerator and he's also never fitted a fully enclosed shower (you know, the ones with a roof)...ffs I've fitted a few of each and I'm not even a plumber :shakehead

 

[ProDave]

he's also never fitted a fully enclosed shower (you know, the ones with a roof)...

I've fitted a few of those, and IMHO they are just expensive carp. I would not have one in my house.

 

[SLIPSHOD & SLAPDASH]

I've fitted a few of those, and IMHO they are just expensive carp. I would not have one in my house.

From your earlier statement, i doubt you have anything expensive   :innocent  

 

[Richard-the-Ninth]

Here's a couple of gems I got from him the other day....

He's never fitted a macerator

Have you considered he is wise?

 

[batty]

No he is definitely Eric.

 

[NozSpark]

Have you considered he is wise?

Not really,,,, especially when he was thinking of clipping a gas pipe to the outside (front) of the house when theres an easy run under a suspended floor

 

[steptoe]

Shame that doesn't work in reverse. I'm so tight I should be rich.

:slap

 

[Sidewinder]

Same as above  ,,,  This pump should be a bronze bearing  type which does last. However even on one of my fairly recent jobs where money doesnt (didnt) matter this pump has gone from on 24/7 to times on for 5 hours a day to off. We have also fitted standard type time clocks to the boiler to turn off even though its all underfloor heating that should be left on .

To be honest, I would not select a bronze bush pump & motor as they have much reduced life against a correctly designed pump & motor using "anti-friction" bearings, thus, that is what should be selected, a correctly designed pump/motor unit could well have a design life in excess of 50 years running continuously.

 

[Adrian]

When I've done them I fit a pipe stat so when the return gets up the heat the pump cuts out and stops circulating the water  im surprised nobody else here does the same 

 

[batty]

I always thought the idea was instant hot water in large properties the way you do it surely it won't be instant especially if stat is in airing cupboard were it will stay hot especially if its done correctly with pipes insulated.