Carrier 30WG 080 - 1 - INTRODUCTION; 1.1 - Installation safety considerations

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1 - INTRODUCTION
Prior to the initial start-up of the 61WG/30WG/30WGA
units, the people involved in the on-site installation, start-up,
operation and maintenance of this unit should be thoroughly
familiar with these instructions and the specic project data
for the installation site.
The 61WG/30WG/30WGA units are designed to provide a
very high level of safety during installation, start-up,
operation and maintenance. They will provide safe and
reliable service when operated within their application range.
They are designed for an operating life of 15 years by
assuming a 75% utilisation factor; that is approximately
100,000 operating hours.
This manual provides the necessary information to familiarize
yourself with the control system before performing start-up
procedures. The procedures in this manual are arranged in
the sequence required for machine installation, start-up,
operation and maintenance.
Be sure you understand and follow the procedures and safety
precautions contained in the instructions supplied with the
machine, as well as those listed in this guide.
To nd out, if these products comply with European directives
(machine safety, low voltage, electromagnetic compatibility,
equipment under pressure etc.) check the declarations of
conformity for these products.
1.1 - Installation safety considerations
After the unit has been received, when it is ready to be
installed or reinstalled, and before it is started up, it must be
inspected for damage. Check that the refrigerant circuit(s)
is (are) intact, especially that no components or pipes have
shifted (e.g. following a shock). If in doubt, carry out a leak
tightness check and verify with the manufacturer that the
circuit integrity has not been impaired. If damage is detected
upon receipt, immediately le a claim with the shipping
company.
Do not remove the skid or the packaging until the unit is
in its nal position. These units can be moved with a fork
lift truck, as long as the forks are positioned in the right
place and direction on the unit.
The units can also be lifted with slings, using only the
designated lifting points marked on the unit.
These units are not designed to be lifted from above. Use
slings with the correct capacity, and always follow the lifting
instructions on the certied drawings supplied with the unit.
Safety is only guaranteed, if these instructions are carefully
followed. If this is not the case, there is a risk of material
deterioration and injuries to personnel.
DO NOT COVER ANY PROTECTION DEVICES.
30WGA are supplied without safety valve on the high-pressure
refrigerant circuit and are equipped with automa-tically reset
pressure switches in accordance with EN378.
For unit installation and connection to the remote condenser
it is necessary to:
• Check the applicable air conditioning regulations and
safety standards (e.g. PED and EN378 for the European
Union)
• Determine which accessories (safety valves, fuses etc.)
are required so that these circuits comply with the
applicable regulations and standards.
If shut-off valves are used on the circuit, ensure that these
valves do not shut off the safety valve for the different containers
that they protect.
The protection devices include the fuse plugs and safety valves
(if used) in the refrigerant or heat transfer medium circuits.
Check if the original protection plugs are still present at the
valve outlets. These plugs are generally made of plastic and
should not be used. If they are still present, please remove
them. Install devices at the valve outlets or drain piping that
prevent the penetration of foreign bodies (dust, building debris,
etc.) and atmospheric agents (water can form rust or ice).
These devices, as well as the drain piping, must not impair
operation and not lead to a pressure drop that is higher than
10% of the control pressure.
Classication and control
In accordance with the Pressure Equipment Directive and
national usage monitoring regulations in the European
Union the protection devices for these machines are classied
asfollows:
Safety
accessory*
Damage limitation accessory**
in case of an external re
Refrigerant side
High-pressure switch x
External relief valve*** x
Rupture disk x
Fuse plug x
Heat transfer uid side
External relief valve**** x x
* Classiedforprotectioninnormalservicesituations.
** Classiedforprotectioninabnormalservicesituations.
*** The instantaneous over-pressure limited to 10% of the operating pressure
doesnotapplytothisabnormalservicesituation.Thecontrolpressurecanbe
higherthantheservicepressure.Inthiscaseeitherthedesigntemperatureor
the high-pressure switch ensures that the service pressure is not exceeded in
normalservicesituations.
**** Theclassicationofthesesafetyvalvesmustbemadebythepersonnelthat
completesthewholehydronicinstallation.
Do not remove these valves and fuses, even if the re risk is
under control for a particular installation. There is no
guarantee that the accessories are re-installed if the installation
is changed or for transport with a gas charge.