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1 Safety Precaution
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WARNING
* This unit is suitable for commercial and industrial use, not suitable for home use . Don't use it in som special
places for machine rooms, precise instruments, foods, plants, animals, artworks, etc.
· The installation shall be done by the distributor or the professional staff. The installation staff must have related professional
knowledge. Misoperation in the self-installation will result in fire, electric shock, injury, water leak, etc.
· If the air conditioner is installed in a small room, some proper measures shall be taken to make sure that the concentration of
refrigerant leak in the room shall not exceed the critical level. For detailed measures, please consult the distributor.
· When connecting the power supply, comply with the regulations specified by the local power company. According to the law, the
ground wire must be connected. The misconnection of the ground wire will result in electric shock.
· If the air conditioner needs to be moved or reinstalled, please inform the distributor or the professional staff to operate. Incorrect
installation will result in fire, electric shock, injury, water leak, etc.
· The users are not permitted to rebuild or repair the air conditioner by their own. Incorrect repair will result in fire, electric shock, injury,
water leak, etc.. Please inform the distributor or the professional staff to repair.
!
NOTE
· Make sure the water drainage ditch is useable.
· Make sure a current leakage protection switch is equipped. The current leakage protection switch must be equipped. If not, an electric
shock will take place.
· It mustn't be installed in any potential leakage location of inflammable gas. In case of the inflammable gas leak around the outdoor
unit, a fire takes place.
· Make sure the foundation and hoisting are firm and reliable. If not, it will result in a falling accident.
· Make sure all cables are correctly connected. The misconnection of the cables will result in the damage of electrical components.
· Pre-installation exposure to water or other moistures will result in short circuit of its electrical components.. Don't store it in any damp
cellar or expose it to rain or water.
· In case of the refrigerant leaks during installation, the room must be ventilated at once. If the leaked refrigerant is exposed to flame,
some toxic gases will be generated.
· After installation, make sure the refrigerant is not leaked.
· If the refrigerant gas in the room is exposed to flame source, such as a heater, a stove or an electric cooker, some toxic gases will be
generated..
· A lightning protection device must be equipped according to national laws and regulations against the lightning strike.
2 Key Points for Construction
2.1
Arrival of goods and open-case inspection
1) When receiving the machine, check if there is any damage in transportation. If any surface or internal damage is found, please inform
the transportation agency in a written form.
2) After receiving the machine, check if the type, specification and quantity of the machine conform to the contract.
3) When unpacking the product, please keep the Manual well and check all accessories.
2.2 Refrigerant pipe
1) The refrigerant pipe must be installed by the special refrigerant distributor made by our company (purchase).
2) The refrigerant pipe must use the pipe with specified diameter and wall thickness.
3) The welding of the copper pipe must be performed with nitrogen-filled protection. Before welding, the copper pipe must be filled with the
nitrogen of 0.2kgf/cm . After welding, the nitrogen must be cut off until the copper pipe is thoroughly cooled down.
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4) The refrigerant pipe must be treated with thermal insulation.
5) After the refrigerant pipe is installed and before the air tightness test and vacuumization are performed, the indoor unit cannot be power-
on.
2.3 Air tightness test
After the refrigerant pipe is installed, nitrogen of 40kgf/cm (4.0MPa) must be filled from the gas side and liquid side simultaneously for
24-hour air tightness test.
2.4 Vacuumizing
After the air tightness test, vacuumization (-0.1MPa) must be performed from both the gas side and the liquid side simultaneously.
2.5 Refilling of refrigerant
1) The refilling volume of refrigerant is calculated by the diameter and length (actual length) of the pipe at the liquid sides of the indoor and
outdoor units.
2) The refilling volume of refrigerant, diameter and length (actual length) of liquid pipe, and height difference of the indoor and outdoor units
shall be recorded into the use confirmation table of the outdoor unit (on the cover plate of electronic control box) for future reference.
2.6 Electrical wiring
1) The power supply capacity and wire diameter shall be selected according to the design manual. Generally, the power line of the air
conditioner is thicker than that of the motor.
2) To prevent misoperation of the air-conditioner, don't interlace or wind the power line (220-240V-/380V 3N-) with the connecting wires
(low-voltage wires) of the indoor and outdoor units.
3) The indoor unit is power-on after air tightness test and vacuumization.
2.7 Trial Run
1) Trial run cannot be performed until the outdoor unit is power-on for more than 12 hours, or the system may be damaged.
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