Vaillant TurboMax 824 - adjusting time between cycles

Joined
16 Dec 2013
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Hampshire
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United Kingdom
Hi all,

I do have my underfloor heating system running out of my combi boiler. This needs quite low but ideally constant hot water supply in order to work efficiently. Ideally I would like to maintain the water supply within the 45-55 C deg range.

At the moment the boiler is heating water to 68 C deg and then goes into anti cycle mode for 4 minutes. At that point the water has around 30 C deg (300 m of pipes hence there is a bit to heat).
I have pump overrun for 2 minutes enabled. Then there is 2 minutes of silence and low temp.

I've looked at the manual and tried quite a few settings but I can't see how I can force the boiler into "more often but less extreme" operation.

Any suggestions how to reduce the time between the cycles (as I can control the temperature by knob)?
 
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is your heating a mix of rads and underfloor or only underfloor ?
 

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