Pressurise Greenstar 30CDi

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26 Feb 2021
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United Kingdom
Hi everyone.
I have a Worcester Greenstar 30cdi boiler and I need to recharge/depressurise it.

unfortunately it has neither an internal filling link (key fitting) or an external braided hose as shown in the manuals.
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what it has is three valves with slotted heads and black plastic shrouds and that’s all. All are currently open - Slots parallel with pipes.
Presumably I need some combination of these valves open and closed to lift the pressure gauge off the stop and out of the red, but I don’t want to simply experiment.

Does anyone know what these three valves are for or just how to recharge the system.

Many thanks

John
 
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Wow ! Thanks Terry and Ian for such fast responses. Terry you were spot on. Tucked away, I missed it on my first look around - I guess I wasn’t expecting to find it there, so far from the boiler.
I’ll know next time ! Only had the place a few months and still learning the quirks.
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Open that black handle tap 1/4 turn till the pressure guage is between 1 and 1.5 Bar then close again

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