Tag: 7 Day Digital 2 Channel Heating and Hot Water Programmer

7 Day Digital2 Channel Heating &Hot Water ProgrammerCat. No. TRT036Cat. No. TRT036Operating & Installation Instructions What is a programmer?…an explanation for householders Programmers allow you to set ‘On’ and ‘Off’ time periods. Some models switch the central heating and domestic hot water on and off at the same time, while others allow the domestic hot…