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water not hot enough due to change to mains

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

we have changed our water system from tank feed to mains i have turned the back plate to high pressure there is a slight whistle also the water is very cool i turned up the temp but still no difference the one im using is the purple one now 2 years old

Asked 4 years ago by Anonymous

The Excel requires equal hot and cold water pressures and if you now have mains cold and a combi boiler or unvented hot water cylinder a pressure equalising valve should be fitted in the feeds to the unit
Answered 4 years ago by Barrie Seabright
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