Horstmann H27XL Programmer, Multi

Product Information

This means you don't have to disconnect and reconnect any of the wires coming into the back part, which is really only a terminal board. The 4 channel programmer follows Horstmann Controls’ AS (or Advanced Simplicity) design parameters which features an easily read, bright blue back lit LCD display .

I imagine the battery is there to keep the timer settings in the event of the power cut, but once the battery is done, that's it - the H27XL is dead. A suitable replacement is: Horstmann (Secure) 2 Channel Receiver Smart Programmable Thermostat (C1727).I currently have a Horstmann H27XL programmer, as shown in the attached photo, a Bermuda Baxi boiler and a hot water cylinder which is in a cupboard upstairs. Also useful are the Boost override buttons which allows y ou to bring on the heating and / or hot water for 1 or 2 hours at any time. Hi I have a Horstmann channel plus XL ModelH27 that has failed, will this model be a direct replacement and not need any electrical alterations to the back plate.

You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. For example they mention it's easy to install and program, has great features, and fits to the exact same back plate. The programmer, otherwise known as the timeclock, timer or clock is a device that enables you to control when the hot water and heating is switched on to maximise home comfort.We're sorry but this product has now been discontinued by Horstmann Controls and can no longer be purchased.