MAKING MODERN LIVING POSSIBLE SET3M Electro-Mechanical 24 Hour Programmer for Heating and Hot Water Installation Guide Danfoss Heating...
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For a large print version of these instructions please call Marketing on 0845 121 7400. Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other printed material. All trademarks in this material are property of the respective companies.
Installation Instructions SET3M Electro-Mechanical 24 Hour Programmer for Heating and Hot Water Index 1.0 Installation Guide ..................4 2.0 System Overview ..................4 3.0 Installation ....................4 3.1 Wiring .....................6 3.2 Typical Gravity DHW Pumped HTG ..........7 3.3 Typical Fully Pumped System with Spring Return Zone Valve in Heating .................8...
3. For mains voltage applications a link must be fi tted between terminals L, 2 and 5. 4. Whilst the unit does not require an Earth connection, a terminal is provided on the wallplate for Earth continuity purposes. SET3M...
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9. Before setting the programme, check the unit and circuit. Switch ON the mains supply and press both WATER and HEATING rocker switches to the CONSTANT position - both red LED’s should now be illuminated. Adjust any remote thermostat to check the services operate correctly. Danfoss Heating...
TIMER NOTES: FOR SET2E LINK TERMINALS 1 & 5 FP975 ON A SET WALLPLATE N L 1 2 3 4 5 6 NOTE: For mains voltage applications links must be fi tted between terminals L, 2 and 5. SET3M...
Supply 3 amp fuse Cylinder Stat Boiler S.R.Z.V Pump Other Danfoss Randall products suitable for use with above circuit:- AT cylinder thermostat; RMT room thermostat; HP22 or HP28 motorised zone valve with spring return actuator and SPST auxiliary switch. SET3M...
Room Stat Supply 3 amp fuse Cylinder Stat S.R.Z.V Boiler Pump Other Danfoss Randall products suitable for use with above circuit:- AT cylinder thermostat; RMT room thermostat; HP28C motorised zone valve with spring return actuator and SPDT auxiliary switch. Danfoss Heating...
Terminals Mains Supply Room Stat 3 amp fuse Cylinder Stat Boiler 3-port mid-position Pump valve Other Danfoss Randall products suitable for use with above circuit:- AT cylinder thermostat; RMT room thermostat; HS3 3-port mid-position valve with spring return actuator. SET3M...
Cylinder Stat S.R.Z.V Boiler S.R.Z.V Pump Other Danfoss Randall products suitable for use with above circuit:- AT cylinder thermostat; RMT room thermostat; 2 x HP22 or HP28 motorised zone valve with spring return actuator and SPST auxiliary switch. Danfoss Heating...
Motorised Zone Valve in each Service D.H.W on-com-off / on-com-off Terminals Mains Room Supply Stat 3 amp fuse Cylinder Stat F.M.Z.V Boiler F.M.Z.V Pump Other Danfoss Randall products suitable for use with above circuit:- AT cylinder thermostat; RMT room thermostat. SET3M...
Technical Services Department before proceeding with replacement. Note: The SET3M is a direct plug-in replacement for any existing programmers using the British Gas Standard Wallplate. This includes the Horstmann 425 Tiara and Diadem electro- mechanical and 525 &...
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