Recent content by JonCa

IMHO one of many reasons why your using to much gas could be..... -Your boiler is designed to have gas available at a certain pressure and volume, when it is burning. -The correct gas delivery will ensure that (assuming everything else is in spec) the boiler is able to deliver the boilers...

Simond, thanks, when you have 27 rads across 14 rooms plus large hall & landing with a 46kw whole house load its primarily a zoning system I'm after, I think :? I suspect I'd get better economy with dual boilers, yes more expensive to install but cheaper unit costs to buy and modulate lower...

No not me, - but I did ask for a price from the seller, - no answer yet. I was looking at installing dual boilers but having decided against dual I dont think I have a need for this unit - although it does interwork with the multi-zone functionality that I could well be interested in. Downside...

Sorry, think I shall remove my "smart-link" app its just to smart. The dots it puts in the link are ok for me but send a link and it looses its meaning :( Yes that's the Vaillant book :D Nice eBay Seller :lol:

Shown as UK products in Vaillants Commercial boilers book www.vaillant.co.uk/stepone2/.../commercial-heating-brochure.pdf Purchase VR90 from http://www.bhl.co.uk/product/VAILLANT_VR90_REMOTE_CONTROL_FOR_GSHP Purchase VRC630 slightly more challenging and expensive but available from...

Hi, You are looking to go from a CM907 to a BDR91 so wiring changes as in picture below show what was required. The new wires are the red ones in my picture. Your photos show red and blue wires and an exposed earth wire but do not identify what they are joined to, so it is impossible for...

Just Googled BDR91 and Honeywell destructions show as below, So you do need the extra wires. You'll just have to apply the info to your situation as appropriate. Alternatively www.honeywelluk.com/Documents/Full-Install/pdf/1069.pdf

Just refill slowly so the air does not get trapped. TRV on outlet of rad can chatter (due to water flow) as it gets close to being fully closed

Hi, Would you be in the part of Essex near Dartford Crossing? I'm in Sidcup and looking for a quote/estimate/guidance on a boiler change and improved system control. Currently I have an old Potterton Osprey 150 and 27(ish) rads over two zones + HW, whole house load appx 46kW House built 1895...

At page //www.diynot.com/forums/viewtopic.php?t=37170 see FAQ 8 note last para. You say F&E getting hot at its outlet. If air in system then air will expand and send hot water towards F&E, should get same on expansion pipe so check that you do not have any closed valves on expansion pipe...

Does :- No avail = No air comes out ??? or :- air come out but its back next time I check ???

WC & 2 x 2 port