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Travelling heat

Bob Forand
Bob Forand Member Posts: 305
in THE MAIN WALL
I am looking for some help on a system. I have a system that has 6 zone valves for high temp heat and one low temp heat on a switching relay. When the mod/con boiler comes on, the main pump is pushing heat through the low temp pump. I know that I have to put a zone valve in before the pump, but I don't know ow to wire it. I don't have room in the ZVC406, and the low temp pump is on a SR501. I am using 5&6 to as end switch to call boiler on. How would I wire the zone valve in ?
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