View our wide range or wiring diagrams and wiring options download pdf s of each diagram here. The heatmiser uh8 underfloor heating wiring centre 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. So in this video i m going to show you how to wire an underfloor heating system.