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I think I’ve settled on a conventional system with pressurised tank. Running all them pipes is going to be difficult. I’ll get new boiler and tank fitted first and then slowly connect up rads floor by floor. First thing is to get a new water main sorted I’ve also today upgraded my hive...

luckily boiler & tank are being sited centre of the house, just below bathroom and will actually be in the new kitchen so pipe runs for hw are not very long. yes I already have 3 circuits but the whole pipework needs replacing, luckily I can reuse mv’s as they are only a few years old

Thanks for the reply. The number of pipes is what is the issue for me. On the first floor I’d have 7 radiators, ground floor would be 10, plus 3 in the loft. I am contemplating about just going for the standard S plan+ I have now but upgrading all pipework to 22mm and only teeing off in 15mm...

Thanks for that. Yes I missed the HW valve on my excellent drawing. I am just planning on locations for all the items and how to stage all the work. I was looking at the actual kit and found some ufh manifolds that I could use, with actuators to control each ‘zone’ using the heatmeiser wiring...

What are the opinions on a high flow combi v system boiler?

My crude drawing, how does that look. Each radiator would have a 15mm flow & return from the manifold. Also need to work out costs for this versus the zone valve route Your thoughts are welcomed

I’m guessing you only need manifold for flow and returns can be combined? also need to find feed manifolds that use 15mm pioe

These are imperial rather than metric sizing

Do you have any links to manifolds? All the ones I’ve seen are 16mm for underfloor heating thanks in advance

This does sound like exactly what’s needed as the pipework in my system is very old and long runs in old imperial 15mm equivalent. I’ll get some drawings put together and come back. I need to keep costs down as I need to do the same with electrics as well as general renovation. Thanks again, I...

So pressing boost on the smart head would get it to fire the boiler? Sounds like trv’s for each maybe easier. Was reading some reviews about the wiser kit, people were having some issues in larger homes due to it being based on rf rather than wifi. Do you know of any alternatives and also where...

Thanks for that. I will draw out and post back. I would rather do what I can myself as previous experiences have been too many quick cowboy jobs to get it done, to only find out things are wrong. Doing if I do things myself I take take to ensure it’s all correct, I’m not maximising profit...

It does make sense, I’m in IT so I make the comparison between moving from ring networks to star networks. I’m contemplating whether I do the manifolds myself as I sort each room up and then get the tank&boiler fitted by an engineer. It would mean less disruption in the house at one time. why...

Also doing a search I can only find underfloor manifolds, but decided against underfloor heating due to costs

That sort of makes sense, just how would the heating not come on when the hw is called? I think I have some space for a manifold on each floor, the problem would be running so many pipes around the house in timber floors. I assume main feed and return to manifold in 22mm and each radiator comes...

:evil::evil: I was considering moving to smart valves instead of zone valves. I guess I will still need a zone valve for the tank and one for the actual heating side. I need to look at costs as 23 smart valves is nearly £1400 by themselves can I ask what manifolding is, so I know to ask the...

Currently zoned; downstairs separate and then 2 top floors. House isn’t a mansion my any means, but not your bogo house either. Ceilings are 2.7m

When we changed to S plan, we separated upstairs and downstairs heating so run 3 zone valves all connected to Hive

Yea lots of rooms and multiple rads in a couple of rooms

Thanks. At the moment we are running Hive