Lightwave LW821 - Installation; Important Installation Safety

Power LED. When
illuminated the
relay is powered.
Mounting hole.
On/o & linking
button.
Overview
IMPORTANT: All LightwaveRF products can be legally DIY installed in your
own home; however, if in doubt, always consult a qualified electrician or
heating engineer. It is important to install this product in accordance with
the following instructions. Failure to do so may void your warranty.
Installation
Fuse
compartment.
Wiring
terminals.
Screw cover.