Instruction Manual

7
Electrical Connections
All necessary electrical connections should now be made. Flush wiring can
enter from the rear through the aperture in the backplate.
WARNING: ISOLATE THE MAINS SUPPLY BEFORE COMMENCING
INSTALLATION
As the HRT4-ZW is a wireless product with no electrical connections all
electrical wiring will be made to the ASR-ZW receiver.
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 is mains powered and requires a 3 Amp fused spur. The
2
recommended cable size is 1.00mm .
The mains supply terminals are intended to be connected to the supply by
means of fixed wiring.
Please ensure that all installations comply with the current IET 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.
Two example circuit diagrams for typical boiler installations are shown
opposite. These diagrams are schematic and should be used for guidance
only.