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Electrical Connections
WARNING: ISOLATE THE MAINS SUPPLY BEFORE COMMENCING INSTALLATION
As the SRT322 is a wireless product with no electrical connections all electrical wiring will
be made to the receiver.
All necessary electrical connections should now be made. Flush wiring can enter from the
rear through the aperture in the backplate.
The mains supply terminals are intended to be connected to the supply by means of fixed
wiring.
The receiver is mains powered and requires a 3 Amp fused spur.
The recommended cable size is 1.Omm2.
The receiver 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.
Ensure that no conductors are left protruding outside the central space enclosed by the
backplate.
The receiver has voltage Free contacts. A link between
Live and terminal 2 is required for mains Voltage
applications.
Two example circuit diagrams for typical boiler installations are shown opposite. These
diagrams are schematic and should be used for guidance only. Please ensure that all
installations comply with the current IEE regulations and the boiler manufacturer's
installation instructions.
For reasons of space and clarity not every connection has been included and the
diagrams have been simplified, for instance some earth connections have been omitted.
6
Receiver internal wiring diagram
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