yes that is true - without an overheat stat a sealed system is dangerous - as if the boiler stat fails (sticks) and there is no vent pipe/ f & e cistern to take the steamed / water a big big problem will occur.
Sealed system expansion vessel question(s)
- Thread starter jaketabb
- Start date
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Good point!
I didn't think so either but don't have a manual, I did look though.
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