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cylinder boost

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    pump on combination cylinder

    Hi all, So, basically I have a h/w combi cylinder that isn't giving me quite enough flow in my flat and I want to put a pump in. Bath takes an hour to fill (electric shower is used instead) even the kitchen sink and the basin give 2 l/m which is just useless. I've been thinking about pumps and...
  2. D

    Unable to set 'cylinder boost' for extra HW on Vaillant VRT350F

    Hi all, newbie here. Less than a year ago I had a new Vaillant Ecotec boiler installed with a VFT350F controller. It connects via a VR65 control box to my existing honeywell gravity fed cylinder. It works well when programmed to come on, but I have never been able to get the 'cylinder boost'...
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