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3 - SAFETY CONSIDERATIONS
3.1 - General
Installing, commissioning and servicing of the various compo-
nents which make up the different controls loops can be dan-
gerous unless certain aspects of the installation, such as the
presence of mains electricity and hot or chilled water in the air
conditioning equipment, are taken into account.
Only specially trained and qualified technicians and installers
who have been fully trained on the product concerned are
authorised to install, commission and service this equipment.
During servicing work, it is essential to apply all the recom-
mendations and instructions given in service leaflets, on labels
or in the instructions delivered with the equipment, and to
comply with any other relevant instructions.
Definition of the pictograms used
Electrical Danger
Caution hand hazard
General Danger
UV-C light: do not look directly at this light
without protective glasses.
Comply with all the safety rules and regulations currently in
force.
Wear eye protectors and work gloves.
Take care when moving or positioning equipment.
3.2 - Precautions against electrocution
Only electricians who are qualified to the level recommended
by the IEC (International Electrotechnical Commission) in its
standard IEC 364, corresponding to Europe HD 384, France
NFC 15 100 and UK IEE Wiring Regulations, may have
access to electrical components. In particular it is obligatory to
disconnect all electrical power supplies to the unit and its
accessories before carrying out any work. Disconnect the main
power supply with an isolating device (not supplied by
Carrier).
IMPORTANT:
The components, which make up the different controls loops
described in this manual include electronic items. As such,
they may generate or be harmed by electromagnetic interfe-
rence unless they are installed and used in accordance with
these instructions. The components making up these controls
systems conform to the requirements of electromagnetic com-
patibility in residential and industrial areas. They also com-
ply with the low-voltage directive.
3.3 - General installation recommendations
IMPORTANT:
In general units fitted with controls loops must have an isola-
ting device upstream (for example a double-pole circuit brea-
ker). If necessary, an easily operated emergency stop device
(such as a punch-button switch) must cut off the power to all
equipment. These safety devices shall be sized and installed in
accordance with IEC Recommendation 364, corresponding to
Europe HD 384, France NFC 15 100 and UK IEE Wiring
Regulations. These devices are not supplied by Carrier.
In general terms the following rules must be applied:
- Units must be provided with over voltage protection up-
stream (not supplied by Carrier)
Upstream over voltage protection
Unit without electric heater
T2A
Unit with electric heater
T10A
- Units must be protected by a differential type earth leakage
current device (not supplied by Carrier)
- The power disconnexion device must be clearly labelled to
identify which items of equipment are connected to it.
- The wiring of the components which make up the different
control systems must be carried out in accordance with the
latest rules and regulations by professional installers.
- The power supply cable must be double insulated and fixed
using an appropriate cable clamp. The cable must be clamped
on the outer insulation.
- The controls loop components must be installed in an environ-
ment, which conforms to their index of protection (IP).
3.4 - Conformity
This equipment has been declared to be in conformity with the
main requirements of the directive by virtue of using the follo-
wing standards:
- Electromagnetic compatibility: 89/336/EEC
- Low-voltage directive: 73/23/EEC