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Hi,
I have just moved into a new flat that has GCH, which I have never had before so have a couple of questions and excuse me for being stupid but really have no idea!!
The GCH system is a a Vitodens 100-W. I have a water tank as well as this. As its summer I don't want to have my heating on but with this do I have to have it on to get the hot water?
Thanks
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You must have an additional controller that you can switch from summer to winter. There should be a 3 port valve that will by pass the heating and only heat your hot water.
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