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The E7BX allows the user to 'top up' the hot water if extra supplies are needed during the day time with the main water heating taking place overnight using off Maintenance Manual . HORSTMANN E7BX WATER CONTROLLER The E7BX has a built in double pole isolator switch labelled timed and OFF. 66709 items The E7BX is a simple control intended for use where cheap overnight heating of water is controlled by the Electricity Company's Radio Teleswitch, The Horstmann E7BX has been designed to provide flexibility to the consumer using Off-Peak electricity for Water heating. It provides the facility to Boost your The Horstmann E7BX water heating boost control is the state of the art way to control boost requirements responding to the electricity provider's Radio Horstmann E7BX. Horstmann E7BX Image is for illustration only and should not be relied upon. Brand: Horstmann HCO Code: 07D03. Price: ?56.09. Ex VAT: ?INSTALLATION INSTRUCTIONS. The Horstmann Economy 7 Quartz is an. Electro-mechanical water heating control, which can be set to take advantage of. to Heating Products · Return to Horstmann Technical Index 159 Kb. AS1 - User Guide. Click Here. 246 Kb Click Here. 680 Kb. BX2000 -User Guide. Following pdf manuals are available: Horstmann E7BX Data Sheet. Horstmann E7BX User Manuals. Data Sheet (English) Open manual · Manualsbrain. BX2000 IM.pdf BX2000 Leaflet.pdf BX2000 UM.pdf E7BX IM.pdf E7BX Leaflet.pdf E7BX UM.pdf Economy 7 Quartz 2 hour IM.pdf Economy 7 Quartz 2 hour