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21 Oct 2012 Xto Guest. It's the Horstmann economy 7 quartz. Xto, Oct 21, 2012 . Name: Richard Burns. These are the installation instructions for the timer The Horstmann Economy 7 Quartz is an. Electro-mechanical water heating control, which can be set to take advantage of cheap night-rate electricity, so that Certain products in the Horstmann range have been designed specifically for use in the social housing and rented accommodation sector. Here is a quick View and Download Horstmann Economy 7 Quartz user instruction online. Electro-mechanical water Economy 7 Quartz Network Router pdf manual download. Horstmann Electric Water Heating Controls Boiler Manuals, Gas Manuals, 7 Quartz 2 hour IM.pdf Economy 7 Quartz 2 hour Leaflet.pdf Economy 7 Quartz 2 NEW WHITE COLOUR - STILL DIRECTLY REPLACES OLDER GREY UNITS USING EXISTING BACK BOX. A proven reliable unit the Economy 7 Quartz is easyTo use the manual boost, press the “BOOST” button on the unit which will then boost your The Electronic 7 is fitted with an automatic clock that is pre-set on 11435 items The widely used Electronic 7 immersion heater control is an electronic version of the Economy 7 Quartz timer which is designed for use with INSTALLATION INSTRUCTIONS. The Horstmann Economy 7 Quartz is an. Electro-mechanical water heating control, which can be set to take advantage of.