When piping a Boiler, do you have to consider flow direction etc when fitting T-Pieces?? Or is the whole pipe pressurised so it really doesnt matter? I hope that makes sense or I might have to do a little diagram!!

Also, am I right in thinking that the Cold Water Inlet and DWH Outlet are 15mm throughout?

Ta.

 

Also tiff, sorry to jump thread, what's the best combi boiler on the market at the mo, 3 bed semi it needs to heat

 

We bought a Vaillant TurboMax Plus 837e. I think thats pretty good....

 

cool , how much was it?

the expensive bits si the fitting though

 

Ummmm, I think you could get it for around Ł850+VAT. Its not cheap, but its one of the best there is.

As for the fitting being expensive. I know. Hence the question!!

 

oh god, hope i only have to do it once

 

You can buy Combi's these days for Ł500-600. But we, like you, only wanted to do it once. Vaillant have a very good reputation.

Another one we looked at was the Vaillant Aquaplus.

I think you will get mixed up in the new regs regarding Condensing Combi's etc. But I dont really know the details of that.

 

Christian

On the Boiler itself there will be Flow and Returns, both marked up.

BUT if you are using Thermostatic Radiator Valves, they are bi-directional, so you can fit it to which side of the radiator you want. Just double check that the Valves you are fitting are first.

Depending on what boiler size you have, the DHW MAY be 22mm, but it will say in the instruction Booklet mate.

 

just found this

http://www.heatandplumb.com/acatalog/114_Vaillant.html

 

Pete

As Christian said, his boiler is a VERY good one mate

 

So, if the DHW leaves the Boiler as 22mm, does that mean the whole house must be piped in 22mm?

 

You can reduce it down it you want, but the longer you leave it in 22mm, the better flow rate you will get.

Leave it 22mm as long as possible IMHO

 

So is it OK for the Cold Water Supply to a Boiler to be off a T-Piece?

I have the Cold Water Supply running along the Wall, can I just T into it?

 

Yes mate, that will be fine

 

I have just read the book and it says that both the Cold Water Inlet and DHW Outlets are 15mm on the Boiler. So, should I pipe in 15mm or use an adaptor to go to 22mm??

Obviously the mains enters the house in 22mm pipe, is there any benefit to piping to the boiler in 22mm? Its obviously alot harder to lose 22mm pipes in the wall, so I only want to use it where it is beneficial.

 

wana come and fit mine christian?

 

Fitting a 15mm main to it will be fine mate

With the hot water, it is one of those, the hole is 15mm so stepping it up to 22mm wont gain you much as it can only pass through in 15mm..........if you get me.

Feel free to put 22mm in if you can but it may not make much difference as it comes off in 15mm

 

Ok i have a combi in my house . The timer is the old clock with pins type and it wont swop on and off it trys to clikc over when its next pin comes round but gets halfway and stops

Anythoughts

Nige

 

Nige

You can get a digital one that will pull straight into the place where the mechanical clock is.

Just get what boiler it is and pop into your local Plumbing mechants, they will sort you out bud

NEXT

 

so what your saying is that the controller is fooked then

And a retro fit is a piece of pish

Nige

 

Tiff, when I pipe this Cold Water Supply to the Boiler, should I put some kind of Scale Filter inline??

 

Nige

Yes mate, GO RETRO

Christian

I would mate, for the sake of a few squid

Salamander is a good one

 

OK then,

I have a mixer shower that is fed from a big tank in the loft. The flow is shite - I have room to raise the tank by about 18 inches - worth doing? Or do I have to fit a pump? The tank is fookin huge

 

Raise it up mate, go for the cheapest option first. Thats hould sort it, but if not Pump the Bitch

 

I thought the smaller the pipe bore the quicker the heat up time?
Thats why many people use micro bore systems nowadays.

Company i work for get 65% discount from Valliant.

 

Thanks mate.

 

Microbore is cheap and quick to fit as you can do long runs in one hit.

But it cloggs up easy

 

could you get me a boiler then

 

Grrrrrr, now you tell me!!

 

he aint replied yet so maybe not allowed

 

O.K. list price is Ł996.21+VAT
We get 58% on that particular one Ł418.41+VAT.

Can't order you one anyways as you can only get that price for being account customers, so an invoice would come to my work, and it would get picked up.

 

Chocolate fireguard springs to mind