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Installation under high-humidity atmosphere
In some cases including the rainy season, especially inside of the ceiling may become high-humidity atmosphere
(dew-point temperature: 23 °C or higher).
1. Installation to inside of the ceiling with tiles on the roof
2. Installation to inside of the ceiling with slated roof
3. Installation to a place where inside of the ceiling is used for pathway to intake the fresh air
4. Installation to a kitchen
• In the above cases, additionally attach the heat insulator to all positions of the air conditioner, which come to
contact with the high-humidity atmosphere. In this case, arrange the side plate (Check port) so that it is easily
removed.
[Reference]
Condensation test conditions
Indoor side: 27 °C dry bulb temperature
24 °C wet bulb temperature
Air volume: Low air volume, operation time 4 hours
Installation and service space
Reserve suffi cient space required for installation or service work.
• Make space for installation and service. (Make space to the electrical parts box cover side for service.)
• When installing the unit inside the ceiling, be sure to create a check port.
The check port is required when the unit is installed and serviced.
• Keep a clearance of 150mm or more between the top panel of the unit and the ceiling.
• The length of a connection pipe to the indoor unit should be 50m or less.
<Installation space>
550 or more
50 or more
Enough space to connect
the site pipe
Service hole
450
Check port
EN-25
Bolt size : M10 or Ø3/8 (fi eld supply)
150 or more
550 or more
100 or more
50 or more
Control Box
Service hole
450
600 or more
4
13
INSTALLATION OF FLOW SELECTOR
UNIT
Install the unit securely in the place to suffi ciently withstand the weight of the unit.
If the foundation is not sturdy enough, the unit may fall and cause personal injury.
Perform a specifi ed installation work to guard against earthquake.
Improper installation may cause the unit to fall.
REQUIREMENT
Strictly comply with the following rules to prevent damage of the Flow Selector unit and human injury.
• Do not put a heavy article on the Flow Selector unit or let a person get on it. (Even units are packaged)
• Carry in the Flow Selector unit as it is packaged if possible. If carrying in the Flow Selector unit unpacked by
necessity, use buffering cloth or other material to not damage the Flow Selector unit.
• To move the Flow Selector unit, hold the hooking brackets (4 positions) only.
Do not apply force to the other parts (refrigerant pipe, drain pan, foamed parts, resin parts or other parts).
• Carry the package by two or more persons, and do not bundle it with plastic band at positions other than
specifi ed.
Installation of hanging bolt
(Unit : mm)
• Consider the piping / wiring before the unit is hung to determine the location of the Flow Selector unit installation
and orientation.
• After the location of the Flow Selector unit installation has been determined, install hanging bolts.
• For the dimensions of the hanging bolt pitches, refer to the external view.
• When a ceiling already exists, lay the drain pipe, refrigerant pipe, control wires, and remote controller wires to
their connection locations before hanging the Flow Selector unit.
Procure hanging bolts washer and nuts for installing the Flow Selector unit (these are not supplied).
Hanging bolt
Nut
WARNING
M10 or W3/8
4 pieces
M10 or W3/8
12 pieces
EN-26
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