Your cold storage tank will be higher than your c/h tank so there's more head. So the water in the cylinder is forcing into the coil, which is why the hot water isn't being discoloured and the c/h tank overflows.
Your cold storage tank will be higher than your c/h tank so there's more head. So the water in the cylinder is forcing into the coil, which is why the hot water isn't being discoloured and the c/h tank overflows.
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