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Central Heating & Storage Heaters Forum
One Boiler Serving Four Properties. How To Wire Up?
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<blockquote data-quote="ProDave" data-source="post: 336571" data-attributes="member: 6969"><p>It's really simple when you break it down logically. Here's how I would approach it:</p><p></p><p>Plumb everything with multiple 2 port valves, forget any notion of 3 port valves anywhere in the system.</p><p></p><p>Each and every heat "system" will have it's own 2 port valve. So one for the heating circuit(s) in each "unit" one for each hot water tank etc.</p><p></p><p>The 2 port valves are controlled by local programmers and thermostats supplied from the local wiring of each unit.</p><p></p><p>Then the feedback contacts from each 2 port valve are wired in parallel and go back to fire the boiler when any system calls for heat.</p></blockquote><p></p>
[QUOTE="ProDave, post: 336571, member: 6969"] It's really simple when you break it down logically. Here's how I would approach it: Plumb everything with multiple 2 port valves, forget any notion of 3 port valves anywhere in the system. Each and every heat "system" will have it's own 2 port valve. So one for the heating circuit(s) in each "unit" one for each hot water tank etc. The 2 port valves are controlled by local programmers and thermostats supplied from the local wiring of each unit. Then the feedback contacts from each 2 port valve are wired in parallel and go back to fire the boiler when any system calls for heat. [/QUOTE]
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