Chinese puzzle, one for the plumbers

[macafee2]

Originally Posted by Saga Lout

Where is the feed from the log burner to the tank? is it around the flue or fed through the fire? How is the tank venting off the pressure? Heating water through a log burner leads to uncontrolled temps unless there's some kind of thermostatic shut off. A gas boiler has many controls to stop overheated water but you might not have these kind of controls in that system. Like Dave says, it sounds a bit dodgy in how it's fitted.

complicated. From the log burner the flow and return go to the loft and heat water in a storage tank. This heated water goes to the central heating. If the central heating water continues to get hotter and hotter the water is directed to this 490/5L tank.

just a thought, the vent of this 490/5L tank although connects to the central heating that has an expansion vessel, the vent pipe also has either a bleed valve or pressure release valve as does the tank.

macafee2