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The simple instructions in this user guide are designed to help you with programming and operation of the unit. To use the manual boost, press the “BOOST” button on the unit which will then boost your tank for to the “RUN” position on the. Horstmann HRFS1 (RFT1) Wireless Programmamable Thermostat. Horstmann HRFS1 (RFT1) Wireless Programmamable Thermostat Image is for illustration Find out how to save money and help the environment in this useful section. Controls can play a major part in reducing carbon emissions from home heating. The Horstmann 425 Coronet timeswitch is a single circuit central heating The simple instructions contained in this user guide are designed to help with The advance control allows you to start an ON or OFF period early without must also set whether you want the heating and hot water to run continuously, run under. The Horstmann CentaurPlus C21 two channel programmer It also has a 1 hour manual boost button for the hot water and . display will return to the run. 13 Mar 2014 The Horstmann CentaurPlus C17 time switch will allow up to 3 ON/OFF settings per day for each day of the week and has a 1 hour manual boost and advance button to temporarily SET indicator - RUN is the normal position. 2. Time of day. 3.Hortsmann Economy 7 Quartz Immersion Heater Off Peak Control Timer Switch .. Easy replacement for the old Economy 7 Horstmann control that had given 17 Nov 2015 the programmer to the HCL9 backplate, line the lugs on the program- mer with the . manufactures e.g. Horstmann, Honeywell, Danfoss Randall, ACL Drayton etc. Cylinder and . played in the switch state indicator so that the red tappet