in that instance. the pump starts with no delay at all. Boiler does not come on, pump pumps around cold water.
In order for the boiler to come on and the pump to move hot water around the rads i need the hot water on too (both on programmer and demand from cylinder stat)
Strangely though...
Thanks Oilhead, especially for the headsup on not really needing a new boiler. Something does need to change around the TRVs for sure. Researching more it seems like this is actually some kind of S-Plan but with only one two-port valve, unless there is one I cant find somewhere.
Thanks for that. I guess then that it's some kind of bastardised plan and i'll need to map out exactly what is going on. All i do know so far is...
Oil fired boiler (worcester danesmore 15/19 with pump next to it.)
2 port zone valve at the bottom of the cylinder coil and what appears to be a...
Hi all
Recently moved into a new place which has a c-plan heating system that doesn't appear to have been updated or touched for decades.... no TRVs on rads for example. My aim is to try and add some automation/zoning to it - wifi trvs and openhab controller etc.
Most of it seems to be...