For 16 years at home (since new) we have used the oil fired heating system to heat the house and the water. Although fitted to the copper cylinder we never used the external electrical heater ( can you call it an immersion?). I have now switched it on. Within a minute or two the copper cylinder in which the heater is located is absolutely roasting and then banging begins. so I switch it off The hot water does not rise up the copper pipe to the cylinder. Does this suggest an air lock. I notice that the said 15 mm copper pipe does not go directly to the top of the cylinder but is offset slightly (3") to join up with a horizontal pipe coming out of the cylinder that feeds the hot water from the cylinder to the hot pipes. Is this offset sufficient to prevent circulation of water from the external heater. To make matters worse the PRO that fitted this system failed to fit a drain plug to the cylinder.
External Water Heater- Overheating
- Thread starter sheer1delight
- Start date
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H
holty
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