The Heatmiser UH4 4 Zone Wiring Centre v2 is a compact, DIN-rail mountable control hub that brings together wiring for small to medium multi-zone heating systems. It supports up to four independently controlled heating zones and includes dedicated outputs for a domestic hot water cylinder, system boiler and circulation pump, making it a practical central point for both underfloor heating and conventional radiator circuits.
Zone 4 can be configured as a radiator zone, giving the UH4 the flexibility to serve mixed-heating properties running underfloor heating alongside standard radiators from a single wiring centre. It is compatible with the full range of Heatmiser 230V mains-powered thermostats, including the DS1, Slimline and neoStat ranges.
4
Heating Zones
230V AC
Supply Voltage
3A
Relay Load / Zone
5A
Total Load
IP20
Protection Rating
2 Yr
Manufacturer Warranty
Mixed Heating Systems Supported
Zone 4 can be set as a radiator zone, letting the UH4 control up to three underfloor heating zones alongside one radiator circuit, or be reconfigured entirely for a mixed-system property.
Qualified Installation Required
This is a mains-voltage (230V AC) wiring centre. Installation and wiring must be carried out by a qualified electrician or heating engineer in accordance with current UK wiring regulations.
Thermostat Compatibility
The UH4 is designed for use with 230V mains-powered Heatmiser thermostats (DS1, Slimline, neoStat and Touch ranges). It is not compatible with battery-powered RF thermostats such as neoAir - for wireless zone control, see the Heatmiser UH8-RF wiring centre range instead.
Four Independent Zones
Each of the four zones is individually controlled, giving precise, room-by-room temperature management across the property.
Dedicated DHW Output
A dedicated hot water cylinder output keeps domestic hot water switching separate from space heating zones.
Centralised Boiler and Pump Control
Single points of connection for the system boiler and circulation pump simplify wiring for both new installs and upgrades.
Radiator-Capable Zone 4
A simple configuration option lets Zone 4 operate as a radiator zone, supporting mixed underfloor heating and radiator systems.
Clear Neon Status Indication
Onboard neon indicators give straightforward visual feedback on zone and system status, simplifying commissioning and fault-finding.
Compact DIN Rail Mounting
Supplied with DIN rail mounting clips for a tidy installation inside a consumer unit or heating cupboard enclosure, or direct wall mounting.
Centralised control of system boiler and circulation pump
Status Indication
Neon LED indicators
Installation & Warranty
Mounting
DIN rail (clips included) or wall mounting
Degree of Protection
IP20
Warranty
2 years manufacturer's warranty
How many heating zones can the UH4 control?
The UH4 controls up to four heating zones, each switched independently, plus a dedicated output for a domestic hot water cylinder.
Can I use the UH4 with radiators as well as underfloor heating?
Yes. Zone 4 can be configured as a radiator zone, so the UH4 suits mixed systems combining underfloor heating circuits with one radiator zone.
Which thermostats work with the UH4?
The UH4 is compatible with all Heatmiser 230V mains-powered thermostats, including the DS1, Slimline, neoStat and Touch ranges. It does not support battery-powered RF thermostats.
How many actuators can be connected per zone?
Each zone supports up to 6 actuators, within the overall 3A per-zone and 5A total load limits.
Can the UH4 be mounted inside a consumer unit?
Yes, it is supplied with DIN rail mounting clips for installation inside a consumer unit or heating cupboard enclosure, and can also be wall mounted directly.
