y plan

Hello, I have done my best to follow a very useful post here and also a very useful Youtube video on Y plan installs but I am finding difficult to untangle the solution to the wiring mess that the original cowboy installer seems to have created. The system is an oil fired boiler for both HW and...

I have pumped hot water and CH on a three port valve, a Y plan I believe The wiring seems standard to many Y plan diagrams, where there is no wire to terminal 2 (Heating off) on the controller My guess is I need this wired up for the hive to function fully, but where should it be wired to? The...

Hi all. Finally got my oil fired open vented system up and running which also heats the DHW cylinder. I have not bought a programmer yet as am thinking about a Nest thermostat. My requirements are to control the heating system and the hot water. My system is an oil fired worcester greenstar...

Hello all. Background... I am a 56 year old guy working on a 400 year old property which I have recently inherited from an Uncle. Many years ago I trained as an electrician and also have done many plumbing jobs including full CH systems. Currently I am installing a Y plan system into my...

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...

Hi, I've recently bought a Nest 3rd Gen Thermostat and I'm looking to install it myself. I know how the system works but I'm unsure about a few things. Currently, I've got an Ideal Classic Boiler and Danfoss FP7801/FP715si Programmer on a 3A spur in the Kitchen, Danfoss RMT230 in the Hallway...

I have installed Hive to our Y plan central heating system but the HW, pump and boiler seems to be on permanently. I have attached a picture of the wiring centre. Could anyone help me trouble shoot please? We have a cold header in the attic. I have not used a HW off in my wiring, not sure if...

Firstly, I'm not going to attempt to do any rewiring my self - but I do have a Gas Safe plumber on the job currently (waiting for an internal pipe that is leaking a bit), and I want to get informed on our situation so when he comes back we can get it sorted asap. I have a Y plan heating setup...