Vaillant VRT 240f Manual De Instrucciones página 13

2 Installation
This system MUST be fitted by a qualified and
approved installation engineer, proceeding as
shown in the illustrations on pages 106 to 109. The
relevant safety guidelines should be followed at all
times.
There is a danger of fatal injury from tou-
ching live components. Always shut off
the power supply to the system (and
ensure it cannot be reconnected) BEFORE
carrying out installation or maintenance
work.
Note that we will accept no liability whatsoever for
injury or damage resulting from failure to observe
these instructions. This condition applies especially
to incorrect wiring and/or defective mechanical
installation.
Function of the receiver
The receiver is equiped with three indicator lights.
The lights indicate the following operating states:
OK Indicator light ON - receiver in operation
Indicator light OFF - receiver fails to operate
VRT 240f
GB
13