Installation Work; Selecting An Installation Location; Drain Processing - Fujitsu AJ*A72LALH Series Installation Manual

3.

INSTALLATION WORK

Please obtain the approval of the customer when selecting the location of installation and installing the main unit.
3. 1.

Selecting an installation location

• Install the unit in a location that can withstand its weight, and where it will not topple or fall.
• Calculate the proper refrigerant concentration if you will be installing it in an enclosed location.
Total amount of replenished refrigerant in refrigerant facility (kg)
Capacity of smallest room where unit is installed (m
• If the results of the calculation exceed the concentration limit, increase the room surface area or install a ventilation duct.
Select an installation location by observing the following precautions:
• Install the unit horizontally. (within 3 degrees)
• Install this unit in a location with good ventilation.
• If the unit must be installed in an area within easy reach of the general public, install as necessary a protective
fence or the like to prevent their access.
• Install the unit in an area that would not inconvenience your neighbors, as they could be affected by the airfl ow
coming out from the outlet, noise, or vibration.
If it must be installed in proximity to your neighbors, be sure to obtain their approval.
• If the unit is installed in a cold region that is affected by snow accumulation, snow fall, or freezing, take appropri-
ate measures to protect it from those elements.
To ensure a stable operation, install inlet and outlet ducts.
• Install the unit in an area that would not cause problems even if the drain water is discharged from the unit. Oth-
erwise, provide drainage that would not affect people or objects.
• Install the unit in an area that has no heat sources, vapors, or the risk of the leakage of fl ammable gas in the vicinity.
• Install the unit in an area that is away from the exhaust or vent ports that discharge vapor, soot, dust, or debris.
• Install the indoor unit, outdoor unit, power supply cable, transmission cable and remote control cable at least 1
meter away from a television or radio.
The purpose of this is to prevent TV reception interference or radio noise. (Even if they are installed more than 1
meter apart, you could still receive noise under some signal conditions.)
• Keep the length of the piping of the indoor and outdoor units within the allowable range.
• For maintenance purposes, do not bury the piping.
3. 2.

Drain processing

• The drain water is discharged from the bottom of the equipment. Construct a drain ditch around the base and dis-
charge the drain water properly.
• When installing on a roof, perform fl oor waterproofi ng properly.
Drain processing:
• The drain water from the base of the outdoor unit may gener-
ate during operations.
Perform drain processing, as necessary.
• When you want to prevent the drain water from leaking at the
perimeter, construct a ditch for the drain water as shown in the
fi gure.
• Provide a central drain pan, as necessary.
En-6
WARNING
Refrigerant concentration (kg/m
< =
(0.3kg/m
3
)
CAUTION
Outdoor unit
3
)
3
)
50 mm
or more
10 mm or
more