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  1. S

    hot water in cold storage tank

    I'm back. Can anyone tell me the dangers to health if hot water from a cylinder mixes with drinking water. Also, we have two cylinders side by side - with one cold feed supplying both. Do they have to have separate expansions all the way up to the storage tank. Couldn't they not just be...
  2. S

    hot water in cold storage tank

    Yipee. success. It was a cold mains supply running through one of the showers right enough. Non-return valve fitted on hot water supply, and job done. Cheers for everyone's advice.
  3. S

    hot water in cold storage tank

    Right, on monday I'm going to turn off the mains supply to our building off. Then I will check and see if the tank is still overflowing. If it is NOT, then the case will be well and truly solved, and I will take great delight in either ripping out the three mixers we have or installing...
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    hot water in cold storage tank

    What a day.... I again put a non-return valve on the cold feed to the cylinder, and next thing like before the expansion started running into the storage tank. Originally I thought the coil was burst and the hot water entering the tank was coming from this. But I subsequently turned off the...
  5. S

    hot water in cold storage tank

    Cheers for that. Will say to boss to get this done. However, talking to a plumber mate just a minute or so ago and he says there may also be a chance that the coil in the hot water cylinder is burst. Checked the cold feed pipe at the bottom of the cylinder and up to six feet above...
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    hot water in cold storage tank

    Its always been like that. But I'll tell you this, after you mentioning mixers, we (its a residentail home I work in believe it or not) have three mixer showers on this system, and the lot of them have never functioned properly. The only way we can get them to work reasonably well - ie hot...
  7. S

    hot water in cold storage tank

    How come our cold water storage tank keeps overflowing when there is nothing wrong with the ball cock. The cold feed to the hot water cylinder, which has a coil inside, is warm right up to where it enters the cold storage tank. I put a non return valve on cold feed but hot water started...
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