The 425 tiara and diadem programmers are 2 circuit central heating and hot water programmers able to switch on and off twice every 24 hours. Isolate mains supply before commencing installation horstmann 425 range installation instructions. Easy to fit, all conversion wiring diagrams included. Horstmann, honeywell, danfoss randall, acl drayton etc. The horstmann 425 tiara and diadem programmers are 2 circuit central heating and hot water programmers able to switch on and off twice every 24 hours. I assume that your programmer is the version with the mechanical time dial driven by a small motor. The 425 coronet is particularly suitable for combi boiler. Horstmann 425 tiara user operating instructions manual pdf. Horstmann 425 central heating programmers hot water. Timeclick time clock software reforms how small and midsized businesses track and manage employee time and attendance by providing a simple yet powerful on. Among the best known horstmann products is the 425 range of electromechanical time clocks, with models including the coronet time switch, and tiara and diadem twin channel programmers. With some types of motor, because of them being powered by alternating current ac their direction of rotation depends upon the direction that the alternating current is flowing when power to them is turned on. Free next day delivery available, free collection in 5 minutes. Horstmanns best selling, big value 425 series programmers are the simplest way to control water and central heating in the home.
As a local supplier, phc are proud to support horstmann by distributing the entire range of horstmann products. Fitting the programmer if surface wiring has been used, remove the knockoutinsert from. The tiara has all the capability and features of the 425 diadem, but without the indicator lights. Horstmann central heating controls central heating. Sometimes the solution needs to be simple, like a room stat and timer. We try to offer you the best price and best deals on the horstmann 425 tiara 425 programmer. Horstmann secure cstat 17zw wireless programmable thermostat. Please ensure the clock is set to the correct current time after altering the onoff. The previous single channel horstman time switch failed after 18 months of continuous operation. Control, its what were good at and in domestic central heating and hot water installations that means more accurate control of time and temperature all around the.