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Central Heating & Storage Heaters Forum
Non standard boiler installation
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<blockquote data-quote="Phoenix" data-source="post: 495515" data-attributes="member: 8133"><p>Check to see if those boilers have pump overrun output terminals, rather than looping the supply off the call for heat (which would prevent it cooling down in the way its meant to). I'd also put a run on on the main circulation pump. Something like this <a href="https://www.automation24.co.uk/analogue-multifunction-timer-relays-selec-600xu-a-1-cu" target="_blank">https://www.automation24.co.uk/analogue-multifunction-timer-relays-selec-600xu-a-1-cu </a>pulling in a two pole contactor, I know it says it can switch a reasonable amount but it doesn't sit right to drive it directly somehow.</p></blockquote><p></p>
[QUOTE="Phoenix, post: 495515, member: 8133"] Check to see if those boilers have pump overrun output terminals, rather than looping the supply off the call for heat (which would prevent it cooling down in the way its meant to). I'd also put a run on on the main circulation pump. Something like this [URL="https://www.automation24.co.uk/analogue-multifunction-timer-relays-selec-600xu-a-1-cu"]https://www.automation24.co.uk/analogue-multifunction-timer-relays-selec-600xu-a-1-cu [/URL]pulling in a two pole contactor, I know it says it can switch a reasonable amount but it doesn't sit right to drive it directly somehow. [/QUOTE]
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