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- 19 Oct 2023
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My heat source is an oil boiler and it is a wet heating system. I thought it was an open vented system as there is a feed and expansion tank in the attic. However, on closer inspection, the F+E tank is not actually connected to anything. So it looks like it was at some point it was changed to a sealed system? There is a small expansion vessel in the attic also.
Does this sound likely? (I ask as everything in this house is quite old/basic, and I find it hard to believe money was spent on such change! I assume it wouldn't be cheap).
In addition, the hot water cylinder is vented, so it that normal to have a sealed CH system and vented hot water cylinder? And does this mean that the water is directly heated by the boiler, rather than via a heat exchanger in the cylinder?
Thanks in advance!
Does this sound likely? (I ask as everything in this house is quite old/basic, and I find it hard to believe money was spent on such change! I assume it wouldn't be cheap).
In addition, the hot water cylinder is vented, so it that normal to have a sealed CH system and vented hot water cylinder? And does this mean that the water is directly heated by the boiler, rather than via a heat exchanger in the cylinder?
Thanks in advance!