Fitting Mixer Shower

[MTbowels]

How do I take a feed off the hot water supply pipe from a Baxi Duotec Combi boiler to a Triton Capella mixer shower that I intend to install in the bathroom?

The cold water supply is already in the bathroom as I had an electric shower there previously. The boiler has a stopcock on the rising main in the airing cupboard.

I'm not certain the steps I need to take to insert a 15mm T Piece in the hot water pipe to take a feed to the bathroom. I know I'll have to switch the boiler off and isolate the rising main, but what do I do from there? How do I restart the boiler after the plumbing connections have been made?

thank you

[The Builder]

Simple enough in theory, MT. Anywhere that you can find the 15mm hot pipework, just T off and run to the shower. If you're upstairs, you might consider taking the run up into the roof from the airing cupboard, then along to the bathroom. Drop it down to the shower from there. Insulate it well in the roofspace though.

[MTbowels]

Many thanks The Builder. What I was thinking of doing was to T off the 15mm supply pipe to the housetaps about a couple of feet below the wall-mounted boiler in the airing cupboard.

The problem I have with that is that I don't know the procedure to empty that pipe of water in order to fit the T piece. As you suggest, I'd prefer to T off inside the airing cupboard and take the new pipe up into the loft and down into the bathroom through the partition wall. That way, none of the new pipe would be visible.

[The Builder]

You only need to turn the main cold water off at the stopcock for a combi boiler. That shuts off the hot as well.
Just cut the pipe, but you'll need to have a big piece of cloth handy to soak up the water that's still in the pipework.
You could fit a compression T or a pushfit. If you plan to solder it, you'll need to have a run that's completely empty of water, or you'll never get the fitting hot enough.

[MTbowels]

Thank you once again The Builder. The main stopcock for the house is in the downstairs toilet next to the front door. Should I turn this stopcock off as well as the one installed in the airing cupboard upstairs? The rising main feeds the cold taps in the house before it goes to the airing cupboard. I was thinking that if I only turned off the airing cupboard rising main stopcock, I wouldn't deprive the house of cold water elsewhere.

[The Builder]

Yes, that's a good idea MT ............ good luck :o)