Technical data

5
Envoy Installation, Commissioning & Operating Manual
General – Continued
The control panels are compatible with a wide range of detection and alarm devices. Refer to technical
specification for details. The panel can be, CONVENTIONAL with separate detection and alarm circuits
or “TWIN-WIRE“, with detectors and sounders on the same circuits. This is selectable internally and can
be set differently for each zone if using the hy-spec single zone extension cards. The ENVOY control
panel has integral detector removal monitoring and no special active end of line units are required.
ENVOY control panels are simple to install and operate. Control functions are enabled by keyswitch.
The panel fascia is retained by a security cam lock . No internal access is required under normal usage.
SECTION 2 – INSTALLATION
General
• The installation of fire detection and alarm systems should be carried out in accordance with
B.S.7671, IEE wiring regulations and in line with B.S.5839 British Standard codes of practice for
fire alarm installations. The installation should be carried out by suitably qualified and
experienced technicians.
• Care should be taken with regards to avoiding the close proximity of high voltage cables or areas
likely to induce electrical interference. Earth links should be maintained on all system cables and
grounded in the control panel.
• Any junction boxes used should be clearly labelled FIRE ALARM.
• Any ancillary devices, e.g. door retaining magnets, must be powered from a separate power
source.
• Any coils or solenoids used in the system must be suppressed, to avoid damage to the control
equipment.