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Does anyone have any experience in trying to flush-mount a Vaillant thermostat control? I've got a VRT 392f (wireless one) and it's obvious it's designed to be surface mounted... but it sticks out from the wall so much! I can't help thinking it would look neater flush-mounted, with only the...

Hi there, I've just had a Vaillant EcoTec 937 installed (the one with the storage tanks) and I'm not happy with the hot water flow rate. I'm wondering if anyone else has had similar concerns. The combi part is supposed to provide a max 15.2l/min at 35 degree rise (or 65 depending on which...