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Water Pressure

This question is regarding Mira Excel (1990-96) Cartridge - 903.33

How doe i determine whether to select high or low pressure ?

Asked 3 years ago by Martin Hoad
Rule of thumb (Unless you know the pressure) if it is a on a combi boiler, pumped system or you have a pressurised hot water system then it needs to be set to high pressure.
Answered 3 years ago by George Thomson
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