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Yes finned vs un-finned. Finned presumably convect better/more. LOL. So it's either pay loads for vertical "designer" rad or extend the house into our neighbours garden...

Dan, The system will look like this( I hope the following makes sense): cold main--garden tap--kitchen tap--bathroom1-=PRV==NRV==T to bathroom2==T to boiler==accumulator (- is 15mm, = is 22mm) I'm mostly bothered about boosting flow to bathroom2 and I can't put NRV or attach the...

Hi there, I'd like to replace a radiator in our bathroom for a slightly bigger one as the room is quite cold. The current rad is type 21 (two panels, one big convector) 700mm high and 400mm wide. I can't fit a wider rad than 400mm. Looking at rads of similar sizes I think that this one...

Hi there, I'm considering installing a water accumulator/expansion vessel. Looking at TWS, GAH or Altecnic installation instructions most are showing accumulator connected at the "beginning" just after the single check and pressure reducing valves. Some instructions are showing connection...

Thanks guys. The Vaillant installer ofers 5+ year on both pro and plus models, but yes I'm more inclined to go for the plus model. I'm not entirely sure what you mean by water quality drednought, but yes we've discussed the gas pipe size (22mm already). Casing size is roughly similar to...

We are going to replace our ageing Vokera Compact SE 28 combi with a new condensing boiler. I'm trying to decide which boiler is the most suitable. I have four options (2 Vaillants and 2 Worcesters), but I'm not sure how much attention do I need to pay to DHW flow rate. I don't want to start...

Thanks for prompt replies. I've checked manufacturers instructions and I need to clarify my question. In fact I probably need to change it :oops:. The WDU instructions say that it should be wired via 20A DP switch & a socket. The WDU has a normal power cord with 13A fuse. The hood...

Hi there, I have one unused connection unit (CU) in the kitchen, that was connected to our old boiler. The boiler has been moved away. Now we want to add a waste disposal unit (WDU) and replace cooker hood. I intend to feed the WDU from the CU. The hood is currently connected to cooker...