CentaurPlus C11 & C17 Series 2
Installation Instructions
CentaurPlus single channel timeswitches offer up to
three on / off periods a day with a one hour boost and
instant advance facility.
Installation and connection should only be carried out by
a suitably qualified person and in accordance with the
current edition of the IET wiring regulations.
WARNING: Isolate mains supply before commencing
installation.
1
Fitting the backplate
Once the backplate has been removed from the packaging
please ensure the timeswitch is re-sealed to prevent damage
from dust and debris. The backplate should be fitted with the
wiring terminals located at the top and in a position that allows a
total clearance at least 50mm around the unit.
Direct wall mounting
Offer the backplate to the wall in the position where the
timeswitch is to be mounted, remembering that the backplate fits
to the left hand end of the control. Mark the fixing positions
through the slots on the backplate (fixing centres of 60.3mm),
drill and plug the wall, then secure the backplate in position. The
slots in the backplate will compensate for any misalignments of
the fixings.
Wiring box mounting
The backplate may be fitted directly onto a single gang steel
flush wiring box complying with BS4662, using two M3.5 screws.
CentaurPlus controls are suitable for mounting on a flat surface
only; they must not be positioned on a surface mounted wall box
or on unearthed metal surfaces.
2
Electrical connections
All necessary electrical connections should now be made. Flush
wiring can enter from the rear through the aperture in the
backplate. Surface wiring can only enter from beneath the
timeswitch and must be securely clamped. The mains supply
terminals are intended to be connected to the supply by means
of fixed wiring. Recommended cable sizes are 1.00 or 1.5mm .
CentaurPlus timeswitches are double insulated and do not
require an earth connection but an earth connection is provided
on the backplate for terminating cable earth connectors. Earth
continuity must be maintained and all bare earth connectors
must be sleeved. Ensure no earth conductors are left protruding
outside the central space enclosed by the backplate.
2
Internal wiring diagram C11 & C17 Series 2
The CentaurPlus has voltage
free contacts.
A link L - 2 is required for
mains voltage applications
50H
Z
New installations
Example circuit diagrams for some typical installations are
shown on the following page. These diagrams are schematic
and should be used as a guide only.
Please ensure that all installations comply with current IET
regulations.
For reasons of space and clarity not every system has been
included and the diagrams have been simplified - for example
some earth connections have been omitted.
3
Loading...