https://jme-training-academy.com/index.php?action=history&feed=atom&title=S-Plan_Plus_%2F_Zoned_Systems_Reference_PackS-Plan Plus / Zoned Systems Reference Pack - Revision history2026-06-17T10:41:15ZRevision history for this page on the wikiMediaWiki 1.45.3https://jme-training-academy.com/index.php?title=S-Plan_Plus_/_Zoned_Systems_Reference_Pack&diff=28&oldid=prevMorgan Allen: Created page with "= S-Plan Plus (Zoned Heating System) Wiring Reference = == Overview == S-Plan Plus extends S-Plan by adding multiple heating zones, each with its own valve and thermostat. == Main Components == * Boiler * Programmer / smart controller * Multiple room thermostats (zone control) * Multiple 2-port zone valves * Cylinder thermostat (if applicable) * Pump * Wiring centre / zone control module --- == System Operation == * Each heating zone operates independently. * Hot wat..."2026-06-10T14:09:55Z<p>Created page with "= S-Plan Plus (Zoned Heating System) Wiring Reference = == Overview == S-Plan Plus extends S-Plan by adding multiple heating zones, each with its own valve and thermostat. == Main Components == * Boiler * Programmer / smart controller * Multiple room thermostats (zone control) * Multiple 2-port zone valves * Cylinder thermostat (if applicable) * Pump * Wiring centre / zone control module --- == System Operation == * Each heating zone operates independently. * Hot wat..."</p>
<p><b>New page</b></p><div>= S-Plan Plus (Zoned Heating System) Wiring Reference =<br />
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== Overview ==<br />
S-Plan Plus extends S-Plan by adding multiple heating zones, each with its own valve and thermostat.<br />
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== Main Components ==<br />
* Boiler<br />
* Programmer / smart controller<br />
* Multiple room thermostats (zone control)<br />
* Multiple 2-port zone valves<br />
* Cylinder thermostat (if applicable)<br />
* Pump<br />
* Wiring centre / zone control module<br />
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== System Operation ==<br />
* Each heating zone operates independently.<br />
* Hot water is controlled separately via cylinder thermostat and valve.<br />
* Boiler fires when any zone valve end switch closes.<br />
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== Wiring Concept ==<br />
* Each thermostat controls its dedicated zone valve<br />
* Each valve provides independent boiler demand signal<br />
* Zone controller or wiring centre coordinates signals<br />
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== Key Wiring Points ==<br />
* Each zone = one thermostat + one valve<br />
* End switches commonly linked for boiler call<br />
* Neutral distribution critical for correct operation<br />
* Smart controllers may replace traditional wiring centre<br />
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== Common Fault Areas ==<br />
* One zone permanently on/off<br />
* Incorrect zone mapping at wiring centre<br />
* Crossed thermostat wires<br />
* Multiple zones firing incorrectly<br />
* Failed actuator head on single zone<br />
* Wiring errors after “quick valve change”<br />
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== Notes ==<br />
* Labelling is critical in multi-zone systems.<br />
* Always test each zone individually after work.</div>Morgan Allen