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If its cycling, there's a good chance you're ****ing a load of unburnt gas out into the air each time the regulating valve opens and closes, this might account for some of your missing gas! It's a case of matching the incoming gas pressure to the load, on my ancient Baxi there's a screw which...

Is it short cycling at all in CH mode? I.e. firing repeatedly every few minutes It sounds like your boiler is oversized for your currently installed system. Whilst it will modulate to match the load, its highest efficiency is at higher output. It's worth getting a reading of your return...

Hi there, I suspect this won't have a nice clean cut answer, but I thought I'd ask just in case: I finished rebuilding my bathroom about 6 months ago. Had a problem with a seeping joint on the waste on the bottom of the shower within about a week after tiling which necessitated removing a...

Generally, if you up the bath waste pipe size to 50mm you can connect a WHB on the same run as a bath. However, there are limits on the maximum length of run and you'll have to consult your BC officer again and double check he's happy with it - they're anything but consistent. The AAV is not...

Thanks everyone for your help, I'll work through the mid-position valve fault finding section of that Honeywell guide at the weekend and let you know how I get on.

Needs to be 2W/m2.K to prove reasonable provision for a 'material change of use' though as suggested, you maybe able to barter with your BCO to improve the building in other (cheaper) areas! http://www.planningportal.gov.uk/england/professionals/en/1115314231799.html[/url]

I suspect the reason this has been suggested is to prevent conductive 'thermal bridging' between the outside, through the joists to the plasterboard. To cut a very long explanation short: Essentially heat will always take the path of least resistance. In conductive terms, this is going to be...

Hi there, I'm new and in need of help! :oops: I've got a Baxi Solo 40 HE boiler (non-combi) and I've been having trouble with my CH/HW. I had an old Landis & Gyr mid-position valve that had jammed, which I've now replaced with an equivalent Danfoss HSA3. I also replaced the ancient Siemens...