Could someone please tell me which part of the CH cylinder in a vented system should be the hotest.
I have poked my finger under the insulation jacket at the bottom, middle, and top, and found the top is definately in my case the hottest.
My reason for asking is having just bought a cylinder thermostat and followed the manufacturers instructions to the letter, by fitting it one third up from the bottom even though the tap water is too hot for a bath without adding cold, the thermostat does not switch over even when set at it's lowest 50 degs C.
I then removed the stat and felt the cylinder which was not as hot as halfway up and the top temp was too hot to touch, and I cant help feeling if the stat was mounted there it would do it's job.
I have tested the switching action using a digital continuity meter when applying an external heat source and it works fine, but my tank is obviously not reaching a high enough temp at the one third up point.
Any ideas please.
Regards Ravel
I have poked my finger under the insulation jacket at the bottom, middle, and top, and found the top is definately in my case the hottest.
My reason for asking is having just bought a cylinder thermostat and followed the manufacturers instructions to the letter, by fitting it one third up from the bottom even though the tap water is too hot for a bath without adding cold, the thermostat does not switch over even when set at it's lowest 50 degs C.
I then removed the stat and felt the cylinder which was not as hot as halfway up and the top temp was too hot to touch, and I cant help feeling if the stat was mounted there it would do it's job.
I have tested the switching action using a digital continuity meter when applying an external heat source and it works fine, but my tank is obviously not reaching a high enough temp at the one third up point.
Any ideas please.
Regards Ravel