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Hi,
Long story short: my boiler (gas, conventional, vented, three port system) has been moved from one side of the house to the other.
Previously the immersion cylinder return was the final tee before reaching the boiler, and all worked fine.
Now the immersion cylinder return is a few tees before the boiler, and I'm experiencing many of the radiators coming on when only hot water is called for. The heating side of the 3 port remains cool, so I believe that this is reverse flow caused by the the freedom of water to go into radiators closer to the boiler return.
All of the materials I can find say that the immersion cylinder return must be the final tee before the boiler - and it makes perfect sense (the water can therefore only return to the boiler because the other direction is ultimately blocked by the 3 port valve being closed).
Anyhow, is there a standard attached to this principle that I can refer to, please?
Thanks
Long story short: my boiler (gas, conventional, vented, three port system) has been moved from one side of the house to the other.
Previously the immersion cylinder return was the final tee before reaching the boiler, and all worked fine.
Now the immersion cylinder return is a few tees before the boiler, and I'm experiencing many of the radiators coming on when only hot water is called for. The heating side of the 3 port remains cool, so I believe that this is reverse flow caused by the the freedom of water to go into radiators closer to the boiler return.
All of the materials I can find say that the immersion cylinder return must be the final tee before the boiler - and it makes perfect sense (the water can therefore only return to the boiler because the other direction is ultimately blocked by the 3 port valve being closed).
Anyhow, is there a standard attached to this principle that I can refer to, please?
Thanks