Danfoss SET3M Installation guide
MAKING MODERN LIVING POSSIBLE
SET3M
Electro-Mechanical 24 Hour Programmer for Heating and Hot Water
Danfoss Heating
Installation Guide
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. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
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SET3M |
Installation Instructions
SET3M
Electro-Mechanical 24 Hour Programmer for Heating and Hot Water
GB
Index
1.0 |
Installation Guide ..................................................................................... |
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2.0 |
System Overview....................................................................................... |
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3.0 |
Installation ................................................................................................... |
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3.1 |
Wiring..................................................................................................... |
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3.2 |
Typical Gravity DHW Pumped HTG ............................................. |
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3.3 |
Typical Fully Pumped System with Spring Return Zone |
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Valve in Heating ................................................................................. |
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3.4 |
Typical Gravity DHW Pumped HTG with Spring Return |
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Zone Valve in DHW............................................................................ |
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3.5 |
Typical Fully Pumped System with 3-Port Mid-Position |
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Valve .................................................................................................... |
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3.6 |
Typical Fully Pumped System with Spring Return Zone |
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Valve in each Service ..................................................................... |
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3.7 |
Typical Fully Pumped System with Fully Motorised |
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Zone Valve in each Service.......................................................... |
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4.0 |
Replacement............................................................................................. |
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Danfoss Heating |
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1.0 Installation Guide
Please Note:
This product should only be installed by a qualified electrician or competent heating installer and should be in accordance with the current edition of the IEEE wiring regulations.
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2.0 System Overview |
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Specification |
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Power supply |
230 ± 15% Vac, 50/60Hz |
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Switch action |
2 x SPDT Type 1B |
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Switch rating |
Max 264 Vac, 50/60Hz, 3(1) A |
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Setting accuracy |
± 5 minutes |
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Timing accuracy |
± 1 min/month |
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Enclosure rating |
IP30 |
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Max. ambient temperature |
45°C |
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Dimensions, mm (W, H, D) |
158 x 98 x 58 |
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Design standard |
EN 60730-2-7 |
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Control Pollution Situation |
Degree 2 |
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Rated Impulse Voltage |
2.5kV |
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Ball Pressure Test |
75°C |
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3.0 Installation |
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1.Fix the wallplate to the wall or flush mounted box as required. The connections are at the top and the vertical centre line of the unit, at the position shown on the diagram C/L (in line with terminal 
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2.Surface cables can only enter from below the unit. If mounted on a flush mounted box, cables can enter from the rear through the aperture in the wallplate.
3.For mains voltage applications a link must be fitted 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.
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SET3M |
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Leave su cient space |
Outline of |
C/L |
for screwdriver access |
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programmer |
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Terminal |
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block |
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Wall or |
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plasterbox |
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fixing |
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Leave at least |
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25mm below |
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Cable aperture |
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Rear entry |
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knockouts |
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cable access |
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5.Referring to the wiring diagrams on page 6-12, connect the unit as shown.
6.The unit is supplied ready for use in systems having PUMPED primaries.
Should the unit be required for use in a system having GRAVITY primaries, fit the small plastic shorting link (which can be found taped below the left hand fixing screw hole of the wallplate) over the two pins on the rear of the plug-in module. These pins can be found in the recess near to the bottom edge of the plug-in module.
7.Ensure all dust and debris are cleared from the area.
8.Locate the module on the latches at the bottom of the wallplate and hinge upwards to fully engage the unit connectors into the wallplate. Tighten the two fixing screws to secure the unit to the wallplate.
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 |
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