open vent

Hi everyone, I've been experiencing some constant air bubbling noise on the top floor of our house. I've done some investigating and I think I know what's happening but I'm not expert so I figured it would be best to check with people in the know. I've tried to map out the system so here goes...

I previously made a post here about low heat output of the boiler - this has been mostly rectified with a balance however two radiators still only get hot at the top and not at the bottom. Edit: Forgot to mention the boiler is a 26kW Viessmann Vitodens 100-W WB1B :) When the heating/hot...

Hello, I’ve bought a Vitodens WB1B316 Compact Heat Only Boiler, part no. 7416307, for use on an sealed system, replacing a 17 years old Baxi Potterton Promax 24HE. I'm trying to understand what do I need to get exactly for the Vitodens to work in a sealed system, as I'm supplying all the parts...

Finally getting round to hooking the woodburner up to the thermal store and while i'm at it putting connections in for the eventual gas boiler which will heat the place when i'm too lazy to cart timber in (goes through a fair bit when running the heating as well....) Plan is an Intergas-looking...

Hi all, After a bit if advice if poss. I have an old open vent system in my house, and from a fair old bit of investigation I definitely think the pump is in the wrong place. It's straight after the boiler on the flow side, before the open vent. From my workings it looks like it should be...

tl;dr: Why install RF36 instead of HRE36 or Ideal Logic+ 35? How does weather comp/new thermostat differ to boiler's internal modulation? Is a non-pumped gravity shower acceptable (better than an 8kw electric) upstairs even with very old slow recovery HWC, or just go combi at 13lpm in small...

Hi, Today I drained my open vented heating system to change a leaking radiator valve. The system appears to have fully drained - all radiator valves are opened upstairs and downstairs, and the draining water has stopped. The header tank is still full. Research suggests this means my cold feed...

Hi guys - Hoping someone can help. I am having some building work kicking off in January, and with it is a Valliant EcoTec Openvent 38kw boiler (excited!) - there will be two zones, one for the underfloor heating in the kitchen, then the other for the remainder of the house's radiators...