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© 2 Save Energy Limited 2013
For new installations
, run a new cable between the boiler and chosen Room Sensor
Location. The recommended cable size is 1.0mm
2
. See diagram opposite.
a. Ensure that the Live feed to the Room Sensor is correctly fused (3A or 5A
maximum) - This protection is normally provided by way of a fused spur
powering the heating system.
b. Fix the backplate - Offer the backplate supplied to the wall in the position where
the Room Sensor is to be mounted (with the cable through the central aperture of
the backplate) and mark the fixing positions through the slots in the backplate. Drill
and plug the wall, then secure the plate into position. The slots in the backplate will
compensate for minor misalignment of the fixings.
c. Wiring - All necessary electrical connections should now be made.
• The Room Sensor is double insulated and does not require an earth connection.
• An earth connection block is provided on the backplate for terminating any cable
earth conductors.
• Earth continuity must be maintained and all bare earth conductors must be sleeved.
• If one of the existing wires is a Neutral supply then this should be ‘parked’ on the
terminal labelled ‘N’.
• Ensure that no conductors are left protruding outside the central space enclosed by
the backplate.
• Refer to the diagram and table shown below for the wiring arrangement for a typical
heating system. This diagram is schematic and should be used for guidance only.
