A correctly controlled domestic central heating system provides a better comfort level, uses less energy and produces lower CO2 emissions. Offering both single and dual circuit models the best selling, big value 425 Series programmers are the simplest way to control water and central heating in the home.
425 Diadem
Twin circuit, hot water and central heating programmer with indicator lights. It has 16 programmes available for fully pumped systems, including independent programming of heating and hot water and 10 programmes for gravity/pumped systems. Ideally suited for gravity systems and fully pumped systems incorporating zone valves.
425 Tiara
Twin circuit, hot water and central heating programmer without indicator lights. It has 16 programmes available for fully pumped systems, including independent programming of heating and hot water and 10 programmes for gravity/pumped systems. The Tiara is ideally suited for both gravity systems and fully pumped systems with either mid-position or zone valves.
425 Coronet
A single circuit time-switch for straightforward, accurate time control. The 425 Coronet is particularly suitable for combination boiler systems, warm air systems and extra zone control.