Currently my Hot water cylinder water temperature is being controlled by the boiler temperature, i have the boiler set at 75 deg, i know this is to hot and would like to add a cylinder thermostat/motorized valve to regulate the water temperature.
I currently have one motorized valve on the heating circuit controlled by a room stat.
As the cylinder flow and return are part of the central heating pipework i believe i would have to add a second motorized valve onto the pipework going into the cylinder,and then add a cylinder stat and wire it into the valve and programmer, this would then convert my set up into a 's' plan set up.
My boiler is a ferroli optimax he 31s, in the manual that came with it it states that there is an automatic by pass within the boiler and on the 's' plan diagram there is no automatic by pass shown, so do i need to add an extra automatic by pass for this set up to work or is the boiler bypass sufficient ?
Here's the link to the manual.
Page 15 shows the s plan set up, page 32 shows the boiler set up with the automatic by pass,
Any help greatly appreciated