The Drayton LP722 Programmer MK4 (25476) is a mechanical heating and hot water programmer that allows you to set time-based on/off control for both your central heating and domestic hot water circuits. It uses a simple dial timer format to automate your heating system according to your daily routine.

Function & Purpose

This programmer features a 24-hour dial with adjustable pins that let you define when the heating and hot water should be switched on or off throughout the day. As the dial rotates, the pins engage internal switches to send demand signals to the boiler and associated controls. This helps ensure your heating and hot water operate only when needed, improving comfort and reducing energy use compared with manual switching.

Compatibility

The LP722 Programmer MK4 is designed to interface with central heating systems and boilers that support external timing control. It is suitable for combi, system, and conventional boilers where separate timed control is required for heating and hot water. The mechanical nature of the unit makes it compatible with a wide range of conventional boiler electrical interfaces that can accept a timed demand signal.

Ideal Applications

This programmer is ideal for:

Homes and properties that require scheduled heating and hot water control without the complexity of digital or smart thermostats.
Traditional boiler installations where straightforward mechanical scheduling is preferred.
Users who want an easy-to-use dial interface with clear on/off periods.
Situations where basic daily schedule control (for example, morning and evening heating/hot water periods) is needed.

The Drayton LP722 is valued for its simplicity, reliability, and ease of use, providing dependable time-based control of both heating and hot water for many domestic installations.