The Heatmiser UH8 is designed to work with our 4 channel 230v time clock (TM4) and 230v Set Back thermostat (DS-SB) but equally could be used with any 230v room thermostat. Up to 8 zones can be controlled from the UH8. On board the UH8 are two heating channels, each allows you to specify which time channel it should follow. 2 additional time channel connections are provided for hot water control or other auxiliary devices.
On demand from any zone, a 230v output is provided to switch the relevant zone actuator, underfloor heating pump and valve. A volt free connection is supplied for the boiler, making it compatible with almost all types of boilers.
A simple slide switch makes zone 8 suitable for controlling a radiator zone. When used for controlling radiators, zone 8 does not enable the underfloor heating pump, valve and boiler. Up to 4 actuators can be connected to each zone.
In addition, the UH8 offers DIN Rail Mounting and the enclosure has been designed so that you no longer need to drill cut outs for cable entry.
An option is provided on the UH8-N, UH4 and UH8 for a radiator zone to be controlled. When enabled, the last zone is setup for a radiator zone and therefore doesn’t enable the UFH pump, valve or boiler. On the UH8-RF this option is available per zone.
Din Rail Mounting
All of our wiring centres offer DIN Rail Mounting.
All of our wiring centres provide LED indication of the zone, boiler, pump and valve status providing the installer an easy method of testing the heating system.
Looking for a product manual?
All product manuals and data sheets can be downloaded from our Manuals & Information section on this page. Alternatively head over to our Resource Centre to search our document library.
Relay Load Max
Dimensions (L,H,D) Mm
No. Heating Zones
Our delivery costs vary according to order size and location. For more information see our Delivery page
As standard we include FREE 2 - 3 working day delivery to all UK mainland addresses (excluding, Channel Islands & Eire) on all heating products.
All orders placed after 3pm on a Friday and at the weekend will be processed on Monday and placed on next working day delivery
Please note: orders must be placed before 3pm to be eligible for our Next Working Day, Next Working Day Before 10:30 and Saturday delivery options.
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Feefo Reviews - Average 100% (3 reviews)
good bit of kit just right for my installation
Excellent product. It controls all my heating and hot water.
The Underfloor Heating Store Ltd registered office Lodge Way House, Lodge Way, Harlestone Road, Northampton, NN5 7UG Company registration number 05687171. The Underfloor Heating Store Ltd acts as a broker and offers credit from a restricted range of finance providers. Subject to status, terms and conditions apply. PayPal Credit is a trading name of PayPal (Europe) S.à.r.l. et Cie, S.C.A., 22-24 Boulevard Royal L-2449, Luxembourg.