Recent content by Mick4441

As far as I can see the solar has a separate control incorporated in the heat exchanger/pump unit next to the cylinder and pipes in to the primary coil on the storage tank having a separate stat. The boiler heated side of things is all Honeywell wired through the 10 way junction box I'll get my...

Facility isn't there from the programmer it's supposed to be done with the solar (but it isn't good enough) so at the minute over ride the cylinder 2port valve and run central heating which in turn heats the water but obviously this then bypasses the stat so not ideal. Think I need to bell the...

Hi Is it possible to change my st9100s to the 9400s so I can operate hot water and heating? As far as I can tell it's an s plan set up with x2 2port valves for the upstairs and downstairs heating and another on the hot water cylinder coil. We have solar water heating also but it looks like that...