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Carefully read and follow these instructions for smooth and trouble-free installation.
This manual describes the installation of outdoor unit only
For the installation of the indoor unit, see the installation manual accompanying indoor unit.
SAFETY PRECAUTIONS
• The appliance must be installed, maintained, repaired and removed in
accordance with the installation manual by qualified installer or service
person. When any of these jobs is to be done, ask a qualified installer or
qualified service person to do them for you.
• A qualified installer or qualified service person is an agent who has the
qualifications and knowledge described in the installation manual.
Incorrect work will cause electric shock, water leak, fire.
• Be sure to use the attached accessories parts and specified parts for
installation.
Use of other parts will cause electric shock, water leak, fire, the unit falling.
• The appliance shall be installed in accordance with national wiring
regulations.
Wrong connection can cause overheating or fire.
• Ensure there is no leakage of refrigerant prior to and during work
Check and make sure no ignition source around working area.
Ensure workspace shall be sectioned off and far away from flammable material.
• Ventilate the room if refrigerant gas leaks during installation.
If the refrigerant gas contact with fire, it may generate toxic gas.
When conduct any hot work, dry powder or CO 2 fire extinguisher should be
available to hand, and should be carried out in an ventilated area.
Cigarette smoking or other possible ignition sources shall be kept sufficiently
far away from the work area.
• After installation has completed, check that there is no leakage of
refrigerant gas.
If the refrigerant gas contact with fire, it may generate toxic gas.
• The appliance must be installed, operated and stored in a room with a floor
area larger than 43 ft2 (4 m2), if it is the multi zone system, the floor area
need larger than 46 ft2 (4.3 m2). Minimum installation height, 6 ft (1.8 m).
• Use the specified electrical cable.
Make sure the cable is secured in place and that the terminals are free of
any excess force from the cable. Otherwise overheating or fire may result.
• Form the cable so that the control box cover, the cord holder and cable
holder are not loose.
Otherwise overheating, fire or electric shock may result.
• In case of replacing electrical parts, should be compliance to Sharp
Service Manual or contact manufacture.
Prior to replace electrical parts, ensure that capacitors are discharged,
no live electrical components and wiring are exposed and there is
continuity of earth bonding.
• Tighten the flare nut with a torque wrench according to the specified method.
If the flare nut is tightened too hard, the flare nut may be broken after a
long time and cause refrigerant gas leakage.
• When installing the unit, take care not to enter air substance other than
the specified refrigerant(R32) in the refrigerant cycle.
Otherwise, it will cause burst and injury as a result of abnormal high
pressure in the refrigerant cycle.
• Only qualified personnel can handle, fill, purge and dispose of the
refrigerant.
Comply with national gas regulations.
The appliance shall be stored in a room without continuously operating
ignition sources.
• Be sure to connect the refrigerant pipe before running the compressor.
Otherwise, it will cause burst and injury as a result of abnormal high
pressure in the refrigerant cycle.
• Earth the unit. Incomplete earth may cause electrical shock.
• Install an earth leakage breaker to avoid electric shock in case of leak.
Use the current-activated, high-sensitivity, high-speed type breaker with a rated
sensitivity current of below 30mA and an operating time of below 0.1 second.
• Arrange the drain hose to ensure smooth drainage.
Insufficient drainage may cause wetting of the room, furniture etc.
• Do not use means to accelerate the defrosting process or to clean, other
than those recommended by the manufacturer.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• Pipe-work including piping material, pipe routing, and installation shall
include protection from physical damage in operation and service, and
be in compliance with national and local codes and standards, such
as ASHRAE 15, ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC
International Mechanical Code, or CSA B52. All field joints shall be
accessible for inspection prior to being covered or enclosed.
• The installation of pipe-work shall be kept to a minimum.
• Provision shall be made for expansion and contraction of long runs of piping.
• Piping in refrigeration systems shall be so designed and installed to
minimize the likelihood of hydraulic shock damaging the system.
• Steel pipes and components shall be protected against corrosion with a
rustproof coating before applying any insulation.
• Flexible pipe elements shall be protected against mechanical damage,
excessive stress by torsion, or other forces, and that they should be
checked for mechanical damage annually.
• Precautions shall be taken to avoid excessive vibration or pulsation.
• After completion of field piping for split systems, the field pipework
shall be pressure tested with an inert gas and then vacuum tested prior
to refrigerant charging, according to the following requirements: The
Read the SAFETY PRECAUTIONS in this manual
carefully before operating the unit.
EN-1
A2L
minimum test pressure for the low side of the system shall be the low side
design pressure and the minimum test pressure for the high side of the system
shall be the high side design pressure, unless the high side of the system,
cannot be isolated from the low side of the system in which case the entire
system shall be pressure tested to the low side design pressure.
• Field-made refrigerant joints indoors shall be tightness tested. The test
method shall have a sensitivity of 5 grams per year of refrigerant or better
under a pressure of at least 0,25 times the maximum allowable pressure. No
leak shall be detected.
• Ventilated area: Ensure that the area is in the open or that it is adequately
ventilated before breaking into the system or conducting any hot work. A
degree of ventilation shall continue during the period that the work is carried
out. The ventilation should safely disperse any released refrigerant and
preferably expel it externally into the atmosphere.
• Cabling: Check that cabling will not be subject to wear, corrosion, excessive
pressure, vibration, sharp edges or any other adverse environmental effects.
The check shall also take into account the effects of aging or continual
vibration from sources such as compressors or fans.
• Removal and evacuation
When breaking into the refrigerant circuit to make repairs – or for any other
purpose – conventional procedures shall be used. However, for flammable
refrigerants it is important that best practice be followed, since flammability is a
consideration. The following procedure shall be adhered to:
a) safely remove refrigerant following local and national regulations;
b) evacuate;
c) purge the circuit with inert gas (optional for A2L);
d) evacuate (optional for A2L);
e) continuously flush or purge with inert gas when using flame to open circuit; and
f) open the circuit.
The refrigerant charge shall be recovered into the correct recovery cylinders if
venting is not allowed by local and national codes. For appliances containing
flammable refrigerants, the system shall be purged with oxygen-free nitrogen
to render the appliance safe for flammable refrigerants. This process might
need to be repeated several times. Compressed air or oxygen shall not be
used for purging refrigerant systems.
For appliances containing flammable refrigerants, refrigerants purging shall
be achieved by breaking the vacuum in the system with oxygen-free nitrogen
and continuing to fill until the working pressure is achieved, then venting to
atmosphere, and finally pulling down to a vacuum (optional for A2L). This
process shall be repeated until no refrigerant is within the system (optional for
A2L). When the final oxygen-free nitrogen charge is used, the system shall be
vented down to atmospheric pressure to enable work to take place.
The outlet for the vacuum pump shall not be close to any potential ignition
sources, and ventilation shall be available.
• Charging procedures
In addition to conventional charging procedures, the following requirements
shall be followed.
a) Ensure that contamination of different refrigerants does not occur when
using charging equipment. Hoses or lines shall be as short as possible to
minimise the amount of refrigerant contained in them.
b) Cylinders shall be kept in an appropriate position according to the
instructions.
c) Ensure that the REFRIGERATING SYSTEM is earthed prior to charging the
system with refrigerant.
d) Label the system when charging is complete (if not already).
e) Extreme care shall be taken not to overfill the REFRIGERATING SYSTEM.
Prior to recharging the system, it shall be pressure-tested with the appropriate
purging gas. The system shall be leak-tested on completion of charging but prior to
commissioning. A follow up leak test shall be carried out prior to leaving the site.
• Recovery
When removing refrigerant from a system, either for servicing or
decommissioning, it is recommended good practice that all refrigerants are
removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate
refrigerant recovery cylinders are employed. Ensure that the correct number
of cylinders for holding the total system charge is available. All cylinders to
be used are designated for the recovered refrigerant and labelled for that
refrigerant (i. e. special cylinders for the recovery of refrigerant). Cylinders
shall be complete with pressure-relief valve and associated shut-off valves in
good working order. Empty recovery cylinders are evacuated and, if possible,
cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of
instructions concerning the equipment that is at hand and shall be suitable for
the recovery of the flammable refrigerant. If in doubt, the manufacturer should
be consulted. In addition, a set of calibrated weighing scales shall be available
and in good working order. Hoses shall be complete with leak-free disconnect
couplings and in good condition.
The recovered refrigerant shall be processed according to local legislation in
the correct recovery cylinder, and the relevant waste transfer note arranged.
Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they
have been evacuated to an acceptable level to make certain that flammable
refrigerant does not remain within the lubricant. The compressor body shall
not be heated by an open flame or other ignition sources to accelerate this
process. When oil is drained from a system, it shall be carried out safely.
The unit is charged with refrigerant R32.
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