I don't normally work on these types of system but I have been asked to have a look at one.
There is a Rayburn solid fuel stove fitted giving pumped central heating and gravity hot water. The heating engineer has fitted a normally closed two port valve on the main branch/primary pipework to the cylinder. He says that when the cylinder stat calls, the valve should motor open, thus allowing the heated water into the cylinder and when cylinder is satisfied the valve shuts, enabling the heating side of things to operate.
He has also fitted a normally open valve to work in conjunction with the heat leak side of things i.e. heat leak only works in an overheat situation so as to prevent unwanted heat loss and so the DHW will heat up more quickly.
Apparently the system worked well with the original stove-not the newly installed rayburn fitted. Existing controls before rayburn, were - time clock and pump. No valves.
The valves and heatleak were an after thought as it has been over heating and the customer had to keep running her hot water tap to stop the pipework from banging and clanking.
My question, is this valve set up an acceptable way of doing a system like this?
Just to add,the rayburn has an integral low limit stat and the heat leak is fitted in the same cupboard as the cylinder, right next to the stove.
There is a Rayburn solid fuel stove fitted giving pumped central heating and gravity hot water. The heating engineer has fitted a normally closed two port valve on the main branch/primary pipework to the cylinder. He says that when the cylinder stat calls, the valve should motor open, thus allowing the heated water into the cylinder and when cylinder is satisfied the valve shuts, enabling the heating side of things to operate.
He has also fitted a normally open valve to work in conjunction with the heat leak side of things i.e. heat leak only works in an overheat situation so as to prevent unwanted heat loss and so the DHW will heat up more quickly.
Apparently the system worked well with the original stove-not the newly installed rayburn fitted. Existing controls before rayburn, were - time clock and pump. No valves.
The valves and heatleak were an after thought as it has been over heating and the customer had to keep running her hot water tap to stop the pipework from banging and clanking.
My question, is this valve set up an acceptable way of doing a system like this?
Just to add,the rayburn has an integral low limit stat and the heat leak is fitted in the same cupboard as the cylinder, right next to the stove.
