Solid fuel hot water

[Inverness]

Firstly I won't be touching or going anything... I only want advice if this is right.. my partners dad has a aga that is solid fuel unregulated heat source and a oil boiler. The problem the hit water cylinder doesn't have a stat thus why the hot water is roasting hot but there is a pipe stat on the flow of the coil to cylinder. There is a heat leak radiator in the bathroom.. is this system done correctly? When the oil boiler runs solo the hot water becomes really hot because there is no cylinder stat is it possible to have a cylinder stat fitted to the cylinder or even change the pipe stat location onto the cylinder it's self? What setting should the pipe stat be set at? I know these type of systems and dangerous if not done correctly but it's a system that was done 20 years ago.

 

[SimonG]

Turn oil boiler stat down to 60 as a starting point.
It will have ran like that for years. If you need better control its going to need £££ spending. Depends what your end game is.

 

[Inverness]

Thank you. I believe there's no motorized valves either on the system. I take it when the boiler is on there's nothing regulating the temperature than the thermostat built into boiler? To why the radiators and hot water are too hot.. it's not efficient system.

 

[SimonG]

Yes it will be controlled on boiler thermostat.