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Water Pressure

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

My combination boiler is set to 1.5 bar....should the cartridge be set to high or low? The one I am replacing was to "low"

Asked 2 years ago by Peter Calvesbert
If your Mira Excel / Select is supplied by a combi boiler then the setting on the rear of the cartridge should be set to HP using the red key supplied with the shower at the time of purchase or that is supplied with a replacement cartridge.
Answered 2 years ago by Liam Corrigan
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