Heatmiser UH4-4 Zone 230v Underfloor Heating Wiring Centre

• The UH4 provides central switching of up to 4 zone actuators.
• Output for a hot water cylinder, and the system boiler and the pump.

The UH4 is a versatile 4-zone and hot water wiring centre designed for seamless integration with Heatmiser 230V thermostats. Built for flexibility, it provides reliable control of heating zones, hot water, and underfloor heating systems - making it ideal for both residential and light commercial installations. The UH4 can control any actuator or valve requiring a 230V AC signal, while simultaneously offering a volt-free output to operate a boiler or other heat source. As standard, it also includes a dedicated pump/valve output for underfloor heating systems, typically used to operate a manifold pump or manifold valve. For domestic hot water control, the UH4 supplies a 230V hot water enable signal to the valve, with auxiliary valve connections made via the Grey (Gr) and Orange (Or) terminals. Zone 4 adds extra flexibility and can be configured as an isolated radiator zone using the built-in Yes/No selector switch.