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Of course, forgive me - 'hybrid' used in general (non-heating) sense intending to convey the mix of UFH and rads. He's already got the (Worcester) boiler and heat emitters in place...it's just a new control layer that's needed (hopefully).

Nice links - thanks both.

Thanks both. Budget not so much of an issue (it's BIG 3-storey house!). I've just had a good chat with Evohome technical, and I think they may well have what I'm looking for...certainly going to go through it in great detail (they're sending me all the technical guff now). I'm much obliged...

Hi all, I've installed a few straightforward Wiser, Nest, Hive and Salus 'smart' systems, but certainly can't claim to know all the products and technical capabilities available out there - I have a particular scenario that I'd welcome your thoughts/suggestions on, if you don't mind... A...

Appreciate all those replies, really useful. I'll certainly talk to McDonald WS - always happy to take expert input. I'll re-check the hatch size... 60cm could be very snug (probably won't have any paint left on it by the time I've got it up there ;-). Thanks again.

My customer has a system boiler and unvented 170litre (upright) cylinder in their loft. Adding an extension to the house, including a bathroom, they want to increase the cylinder capacity (I don't think there are any additional occupants being added, but they want to 'future-proof'). They'll...

Thanks. I'm wondering if there is an increased risk of legionella with this set up...the water in the vessel being relatively static and warmed (largely by conduction through the pipe from the cylinder)?

I acquired a G3 certificate just a few months ago, so haven't yet had exposure to many different installations. One I came across last week: Gledhill 210 StainlessLite tank, the expansion vessel is plumbed directly into the Secondary Return port. There is a specific port available on the...

Not at all - I appreciate everyone's willingness to help!

Thanks all, question well answered.

I don't think a picture will help - I haven't wired anything yet! I am looking to install HIVE into an existing/working S plan set up. For additional clarity, I guess my question is stemming from the fact that on a traditional set up, programmer and room stat are separate units: programmer is...

Can someone please confirm that port 4 (CH on) connects directly to the CH zone valve (brown wire on a 4043h, for example)? From the HIVE wiring diagram, I assume that the output from port 4 is based on resolving both the programmer AND the thermostat ie will only be live if both programmer and...

Hi, new to this forum so apologies if this is a topic that has been covered previously. I have been asked to replace a Baxi Solo WM 40/4 powered flue HO boiler...quite an old machine. Very small, and installed in a kitchen cupboard. Its in-case rear flue is offset to the left (looking from...