R410A All DC Inverter Mini VRF MCAC-VTSM-2014-09
Installation 54
1. Precautions
Ensure that all Local, National and International regulations are satisfied.
Read this “PRECAUTIONS” carefully before Installation.
The precautions describe below including the important Items regarding safety.
Observe them without fail.
After the installation work, perform a trial operation to check for any problem.
Follow the Owner’s Manual to explain how to use and maintain the unit to the customer.
Turn off the main power supply switch (or breaker) before maintain the unit.
Tell
the customer that the Installation Manual and the Owner’s manual should be kept together.
Caution 1:
The characteristics of R410A refrigerant are Hydrophilic, oxidizing membrane or oil, and its pressure is approx.1.6 times higher
than that of refrigerant R22.Accompanied with the new refrigerant, refrigerating oil has also been changed ,Therefore, during
installation work, be sure that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle.
To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of the main unit
and installation tools are charged from those for the conventional refrigerant.
Accordingly the exclusive tools are required for the new refrigerant (R410A).
For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not enter.
Moreover, do not use the existing piping because there are problems with pressure-resistance force and impurity in it.
Caution 2:
This unit must be connected to the main power supply by means of a switch with a contact separation of at least 3 mm. The
installation fuse must be used for the power supply line of this conditioner.
Caution 3:
Ask an authorized dealer or qualified installation professional to install/maintain the air conditioner. Inappropriate installation may
result in water leakage, electric shock or fire.
Turn off the main power supply switch or breaker before attempting any electrical work. Make sure all power switches are off.
Failure to do so may cause electric shock.
Connect the connecting cable correctly. If the connecting cable is connected in a wrong way, electric parts may be damaged.
When moving the air conditioner for the installation into another place, be very careful not to enter any gaseous matter other than
the specified refrigerant into the refrigeration cycle. If air or any other has is mixed in refrigerant, the gas pressure in the
refrigeration cycle becomes abnormally high and it may resultantly causes pipe burst and injuries on persons.
Do not modify this unit by removing any of the safety guards or by by-passing any of the safety inter lock switches. Exposure of
unit to water or other moisture before installation may cause a short circuit of electrical parts.
Do not store it in a wet basement or expose to rain or water. After unpacking the unit, examine it carefully if there are possible
damage.
Do not install in a place that might increase the vibration of the unit. To avoid personal injury (with sharp edges) be careful when
handling parts.
Perform installation work properly according to the Installation Manual. Inappropriate installation may result in water leakage,
electric shock or fire. When the air conditioner is installed in a small room, provide appropriate measures to ensure that the
concentration of refrigerant leakage occur in the room does not exceed the critical level. If refrigerant gas has leaked during the
installation work, ventilate the room immediately. If the leaked refrigerant gas comes in contact with fire, noxious gas may
generate. After the installation work, confirm that refrigerant gas doer not leak. If refrigerant gas leaks into the room and flows
near a fire source, such as a cooking range, noxious gas might generate.
Install the air conditioner securely in a location where the base can sustain the weight adequately. Perform the specified
installation work to guard against an earthquake. If the air conditioner is not installed appropriately, accidents may occur due to
the falling unit.
Electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Make sure the air
conditioner uses an exclusive power supply. An insufficient power supply capacity or inappropriate installation may cause fire.
Use the specified cables for wiring connect the terminals securely fix. To prevent external forces applied to the terminals from
affecting the terminals. Be sure to provide grounding. Do not connect ground wires to gas pipes, water pipes, lightning rods or
ground wires for telephone cables. Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock Do not install the air conditioner in a location subject to a risk of exposure to a
combustible gas. If a combustible gas leaks, and stays around the unit, a fire may occur.
Содержание MDV-V105W/DVN1
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