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Deleted2797112
Hi folks,
I have a retirement flat with Economy 7 heating and hot water. I have a single meter with two readouts - 1 low, 1 normal. Connected is a timer which switches the supply between low and normal at approx. 8.45am and 11.45pm. Hot water is via a cylinder which has 2 immersions, one at the bottom and one at the top. The bottom one is connected to a cable and a simple on/off wall switch labelled Off Peak and the top one is connected to a similar cable and switch labelled Water Boost.
I had expected that keeping the Off Peak switch on all the time would heat up the water between 11.45pm and 8.45am to whatever temperature the immersion thermostat was set at and it would switch off so that water didn't get too hot. Unfortunately, that doesn't happen. The immersion switches on at 11.45pm as it should and it heats the water but it doesn't stop. It gets noisier and noisier until it sounds like the water is boiling furiously and it will explode. Last night I was wakened at 3.30am with what sounded liked a dull 'whoomph' and a small amount of water leaking from what looks like some kind of pressure release pipe.
This interferes massively with my sleep pattern! I either have to try stay awake after 11.45pm until I think the water is hot enough or get up early enough to switch it on to get it hot enough for the day before it goes off at 8.45am. I had a plumber in yesterday doing something else and asked him to look at it. He wasn't familiar with the meter set-up but checked the two immersions. The boost one was set at 60c which he said was fine. The main one was set at 70c which he turned down to 60c. The water still boiled through the night though. What is missing / not working here to cause the water to boil? I can't believe I have to stay up during the night to take advantage of white meter water heating!
Thank you in advance!
I have a retirement flat with Economy 7 heating and hot water. I have a single meter with two readouts - 1 low, 1 normal. Connected is a timer which switches the supply between low and normal at approx. 8.45am and 11.45pm. Hot water is via a cylinder which has 2 immersions, one at the bottom and one at the top. The bottom one is connected to a cable and a simple on/off wall switch labelled Off Peak and the top one is connected to a similar cable and switch labelled Water Boost.
I had expected that keeping the Off Peak switch on all the time would heat up the water between 11.45pm and 8.45am to whatever temperature the immersion thermostat was set at and it would switch off so that water didn't get too hot. Unfortunately, that doesn't happen. The immersion switches on at 11.45pm as it should and it heats the water but it doesn't stop. It gets noisier and noisier until it sounds like the water is boiling furiously and it will explode. Last night I was wakened at 3.30am with what sounded liked a dull 'whoomph' and a small amount of water leaking from what looks like some kind of pressure release pipe.
This interferes massively with my sleep pattern! I either have to try stay awake after 11.45pm until I think the water is hot enough or get up early enough to switch it on to get it hot enough for the day before it goes off at 8.45am. I had a plumber in yesterday doing something else and asked him to look at it. He wasn't familiar with the meter set-up but checked the two immersions. The boost one was set at 60c which he said was fine. The main one was set at 70c which he turned down to 60c. The water still boiled through the night though. What is missing / not working here to cause the water to boil? I can't believe I have to stay up during the night to take advantage of white meter water heating!
Thank you in advance!