Recent content by algo

Hello, I currently have an unvented S-plan system with Rayburn gas boiler (GD80/380G - 24KW/h) and Megaflo hot water cylinder. This all works great but we are thinking of removing the Rayburn and replacing with a different boiler. Currently there is an external pump and as the Rayburn boiler...

Hi - thank for the reply. I'm afraid it's out of warranty by about a year.

Hello, I have a problem with my integrated fridge freezer - the fridge section is frosting up at the back of a shelf. I suspect this is due to a faulty defrost heater or timer but I cannot find any information about it. I called a service engineer who told me I would need a new fridge and...

Hello, what I interpreted was to use an automatic bypass valve to bypass the zone valve for the rads - I have a non trv rad and thermostat so there'd always be a loop for the bypass circuit. Not sure whether this is a good idea or whether to leave the existing closed loop bypass. Thanks...

Thanks for the reply. I can see how physically changing the pipes would work - that's another option. Thanks again

Thanks again for your help, PLC or smart relay would be a good option but a bit pricier. Still want to know if people think it's worth it, or whether it's ok just to have the overrun circuit around the bypass...

Hi Matt, thanks for the reply - would you say it's worth doing though? Is there already a component that exists to control this? Sorry I had a look but didn't find anything immediately - perhaps should have looked closer. I was going to use a DPDT and a SPST relay - that's enough to give the...

Hello, I had to tidy up some wiring on my S-plan system yesterday - the boiler has an overrun and we use a megaflo 120 for hot water. The wiring for the pump overrun is done so that the pump runs with the only circuit being the closed loop with bypass (automatic bypass fitted at 0.3bar) -...

Hello, just a quick update to say the megaflo is in and working great with the GD80 Rayburn. Thanks to everyone on here for their help. All got installed by heating engineers, but one slight difference with the megaflo wiring instructions is that because it's a pump overrun boiler for the...

Hi Tony, thanks again for the reply. I am precisely focussing on the Rayburn because as had been mentioned already on this thread, I need to be certain the boiler is up to the job, and there is some uncertainty about this. I am having difficulty getting hold of Rayburn to ask them which is...

Thanks mysteryman, it's a ground floor flat I'm afraid - so the tanks can only sit high in the bath room - it's a bit of a pain. If I had a loft this wouldn't be a problem! Hence the need for a shower pump currently. Will ring Rayburn tomorrow and ask them for sure but thanks a lot for...

Hello Tony, I assure you I'm not going to do anything of the such. The plan is from the literature I found from the flat. I'm just trying to understand for myself, but I wouldn't be so stupid as to try and do this myself. I only posted the plan because I thought it might clarify what the...

Thanks again, I've understood that now. Trying to get answers for the Rayburn is tricky as it's the GD80 - superceded as the 380G, made in 1992 and now no longer technically supported. It has twin gas boilers - one for the cooker and one for the water primary loop. Here's a picture of the...

Hello, and thanks for all the replies - really useful. I have spoken to some qualified people to fit unvented systems, and have some conflicting opinions about the Rayburn which is why I'm asking on here too. As it currently a pressurised system it seems that it will be ok, but I want to be...

Hello! thanks very much for the reply - much appreciated. My other half loves the Rayburn - I think she'd divorce me if I got rid of it! I will definitely bear your suggestion in mind though - sounds great. Part of the motivation is to get rid of the cold water tanks in the bathroom which...