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Central Heating Wiring help again!
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<blockquote data-quote="NozSpark" data-source="post: 191869" data-attributes="member: 601"><p>I had a 2 pump (4 pipe) setup on an oil boiler just like this with 2 relays (no pump over run) and it worked perfectly... it may have had a very slight trickle through the other circuit, if it did it was very minimal....the extra pump was put in because the gravity HW wasn't convecting due to long pipe runs</p></blockquote><p></p>
[QUOTE="NozSpark, post: 191869, member: 601"] I had a 2 pump (4 pipe) setup on an oil boiler just like this with 2 relays (no pump over run) and it worked perfectly... it may have had a very slight trickle through the other circuit, if it did it was very minimal....the extra pump was put in because the gravity HW wasn't convecting due to long pipe runs [/QUOTE]
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