Application Data - Mitsubishi Heavy Industries FDTC40ZHXV Technical Manual

1.5 APPLICATION DATA

Read the "SAFETY PRECAUTIONS" carefully first of all and then strictly follow it during the installation work in order to
protect yourself.
The precautionary items mentioned below are distinguished into two levels,
WARNING : Wrong installation would cause serious consequences such as injuries or death.
CAUTION : Wrong installation might cause serious consequences depending on circumstances.
Both mentions the important items to protect your health and safety so strictly follow them by any means.
After completing the installation, do commissioning to confirm there are no abnormalities, and explain to the customers about
"SAFETY PRECAUTIONS", correct operation method and maintenance method (air filter cleaning, operation method and
temperature setting method) with userís manual of this unit.
Ask your customers to keep this installation manual together with the userís manual. Also, ask them to hand over the user,s
manual to the new user when the owner is changed.
¡ Installation should be performed by the specialist.
If you install the unit by yourself, it may lead to serious trouble such as water leakage, electric shock, fire, and injury
due to overturn of the unit.
¡ Install the system correctly according to these installation manuals.
Improper installation may cause explosion, injury, water leakage, electric shock, and fire.
¡ Consider measurement not to exceed the limit of the density of refrigerant in the event of leakage especially
when it is installed in a small room.
Consult the specialist about the measure. If the density of refrigerant exceeds the limit in the event of the leakage,
serious accidents may occur due to lack of oxygen.
¡ Use the genuine accessories and the specified parts for installation.
If parts unspecified by our company are used it could cause water leakage, electric shock, fire, and injury due to
overturn of the unit.
¡ Ventilate the working area well in case the refrigerant leaks during installation.
If the refrigerant contacts the fire, toxic gas is produced.
¡ Install the unit in a location that can hold heavy weight.
Improper installation may cause the unit to fall leading to accidents.
¡ Install the unit properly in order to be able to withstand strong winds such as typhoons, and earthquakes.
Improper installation may cause the unit to fall leading to accidents.
¡ Do not mix air in to the cooling cycle on installation or removal of the air conditioner.
If air is mixed in, the pressure in the cooling cycle will rise abnormally and may cause explosion and injuries.
¡ Be sure to have the electrical wiring work done by qualified electrical installer, and use exclusive circuit.
Power source with insufficient capacity and improper work can cause electric shock and fire.
¡ Use specified wire for electrical wiring, fasten the wiring to the terminal securely, and hold the cable se-
curely in order not to apply unexpected stress on the terminal.
Loose connections or hold could result in abnormal heat generation or fire.
¡ Arrange the electrical wires in the control box properly to prevent them from rising. Fit the lid of the ser-
vices panel property.
Improper fitting may cause abnormal heat and fire.
¡ Check for refrigerant gas leakage after installation is completed.
If the refrigerant gas leaks into the house and comes in contact with a fan heater, a stove, or an oven, toxic gas is
produced.
¡ Use the specified pipe, flare nut, and tools for R410A.
Using existing parts (R22) could cause the unit failure and serious accident due to explosion of the cooling cycle.
¡ Tighten the flare nut according to the specified method by with torque wrench.
If the flare nut were tightened with excess torque, it could cause burst and refrigerant leakage after a long period.
SAFETY PRECAUTIONS
WARNING
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WARNING and
178
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CAUTION .