Would this work?

[dormermike]

Hi

I have a downstairs bathroom that is in need of refurb and whilst it is a way off yet, have started to think about how we would like it to work functionally.

It would be good to have a towel rail, and it would be sufficient for this to come on when the water comes on, just to warm towels etc.

As the diagram shows our boiler is in a room next to the bathroom and is only a short hop to where we would like the towel rail.

System is a Y plan, ideal mexico 2 boiler (36kw) and the DHW cylinders and F&E are all in a seperate room on the 1st floor.

What i'm thinking is to use a 2 way valve which opens when the DHW demand is on (or perhaps install a 3 way controller later) to get a flow through the towel rail.

An alternative approach would be to either install another run off the DHW circuit (lots of plumbing and disruption) so in that case I would probably go whole hog and convert the system to use 2 way controllers and zone up the heating circuit a bit (s plan?).

Just thinking aloud at this stage, wondering if the proposed circuit is viable (green).

BTW there is a rad in the bathroom already, so this really is just a towel warmer and not a heating solution. Rad is around 5000 BTU iirc and gets room nice and toasty in winter.

Thanks.

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• dormermike
• 19 Jun 2012
• 1

 

[mysteryman]

If it really is a Y Plan, just branch off for the HTR before the mid-position valve. The HTR will be heated whenever the boiler and pump operate. Also makes an excellent bypass if you have TRVs everywhere else - don't put one on the HTR.

 

[dormermike]

Sorry, whats HTR?

 

[dormermike]

Sorry, whats HTR?

Doh, heated towel rail

 

[doitall]

No, the drawing wouldn't work.

A pic showing the pump and MV would help.

 

[dormermike]

Like this?

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• dormermike
• 20 Aug 2011
• 3

Untitled

• dormermike
• 20 Aug 2011
• 4

Thanks - i think my question has pretty much been answered: the drawing wont work.

Means a bit of distruption upstairs but not a biggie.

Thanks all.

 

[doitall]

What's that pipe before the pump and where does it go. ?

Is it a sealed system and where's the expansion vessel if it is. ?

Alternatively where's the cold feed and vent.

 

[dormermike]

What's that pipe before the pump and where does it go. ?

Is it a sealed system and where's the expansion vessel if it is. ?

Alternatively where's the cold feed and vent.

Its an open system.

Pipe before the pump goes to the F&E.

 

[mysteryman]

Tee off between the pump and the MV.

 

[dormermike]

Tee off between the pump and the MV.

OK thanks - that makes sense really. Can the return be patched into the return near the boiler, so i'd only need to run one pipe down to the bathroom? Would assume so.

Probs not doing this myself btw, though may do - i need to replace that MV as its passing by, could add a T at the same time.

Thanks all.

 

[doitall]

Put a couple of lockshield valves on the pipes so you can control the circuit, and you should be fine.

 

[longdogs]

Electric towel rail?

 

[onlyfitidealboilers]

Tee off between the pump and the MV.

OK thanks - that makes sense really. Can the return be patched into the return near the boiler, so i'd only need to run one pipe down to the bathroom? Would assume so.

Probs not doing this myself btw, though may do - i need to replace that MV as its passing by, could add a T at the same time.

Thanks all.

Yes pal no problem T the return in back at the boiler. But if you teed the flow in there in effect it's not pumped! Negative pressure best Teeing flow in after the pump