Editing Underfloor Heating Electrical Reference Pack (section)

= Underfloor Heating Electrical Wiring Reference =

== Overview ==
Underfloor heating systems use zone controllers and actuators to regulate heating in individual rooms or areas.

== Main Components ==
* Boiler (or heat source)
* UFH control manifold with actuators
* Zone controller
* Room thermostats
* Pump
* Wiring centre / control box

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== System Operation ==
* Each room thermostat controls an actuator on the manifold.
* When a zone calls for heat, actuators open.
* Pump and boiler are triggered via control module.

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== Wiring Concept ==
* Thermostats send signal to zone controller
* Zone controller activates actuators
* Boiler and pump receive combined demand signal

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== Key Wiring Points ==
* Actuators may be 230V or 24V (must be confirmed)
* Each zone must be correctly assigned
* Pump and boiler interlock via controller output
* Keep low voltage and mains voltage separated where required

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== Common Fault Areas ==
* Incorrect actuator voltage mismatch
* One zone not heating (failed actuator)
* Incorrect thermostat pairing
* No pump operation on demand
* Wiring centre misconfiguration
* Airlock or hydraulic issues mistaken for electrical faults

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== Notes ==
* Always confirm actuator voltage before replacement.
* UFH faults are often mixed electrical/hydraulic issues.