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3 Units installation
3 UNITS INSTALLATION
D A N G E R
• Check to ensure that the accessories are packed with the indoor
unit.
• Do not install the indoor units outdoors. If installed outdoors, an
electric hazard or electric leakage will occur.
• Consider the air distribution from each indoor unit to the space of
the room, and select a suitable location so that uniform air tem-
perature in the room can be obtained. It is recommended that the
indoor units be installed 2.3 to 3 meters from the floor level. If the
unit is installed higher than 3 meters, it is also recommended that
a fan be utilised to obtain uniform air temperature in the room.
• Avoid obstacles which may hamper the air intake or the air dis-
charge flow.
• Pay attention to the following points when the indoor units are
installed in a hospital or other places where there are electronic
waves from medical equipment, etc.
• Do not install the indoor units where electromagnetic wave is di-
rectly radiated to the electrical box, remote control cable or remote
control switch.
• Install the indoor units and components as far as practical or at
least 3 meters from the electromagnetic wave radiator.
• Prepare a steel box and install the remote control switch in it. Pre-
pare a steel conduit tube and wire the remote control cable in it.
Then connect the ground wire with the box and tube.
• Install a noise filter when the power supply emits harmful noises.
• This unit is exclusive non electrical heater type indoor unit. It is
prohibited to install a electrical heater in the field.
• Mount suspension bolts using M10 (W3/8) as size, as shown below:
I-Beam
Suspension Bolts
(W3/8 or m10)
3.1 UNIT INSTALLATION
3.1.1 factory-Supplied Accessories
Accessory
Fan motor adapter
(Only rPI-3.0FSN3E)
For Concrete Slab
150~160mm
Concrete
Steel
Anchor Bolt
Qty
Purpose
Static pressure
1
setting
3
PmmL0230A rev.1 - 06/2011
• Do not put any foreign material into the indoor unit and check to
ensure that none exist in the indoor unit before the installation and
test running. Otherwise a fire or failure, etc., may occur.
C A U T I O N
• Do not install the indoor units in a flammable environment to avoid
a fire or an explosion.
• Check to ensure that the ceiling slab is strong enough. If not
strong enough, the indoor unit may fall down on you.
• Do not install the indoor units, outdoor unit, remote control switch
and cable within approximately 3 meters of strong electromagnet-
ic wave radiators such as medical equipment.
• Do not install the indoor units in a machinery shop or kitchen
where vapor from oil or mist flows to the indoor units. The oil will
deposit on the heat exchanger, thereby reducing the indoor unit
performance, and may deform. In the worst case, the oil damages
the plastic parts of the indoor unit.
• To avoid any corrosive action to the heat exchangers, do not in-
stall the indoor units in an acid or alkaline environment.
• When lifting or moving the indoor unit, use appropriate slings to
avoid damage and be careful not to damage the insulation material
on units surface.
Wooden Bar
(60 mm to 90 mm
Nuts
Square)
Wooden Beam
Sling Bolt
(W3/8 or m10)
3.1.2 RPI-3.0fSN3E static pressure settings for very short
ducts
The fan motor in rPI-3.0-FSN3E units can be configured in two different
ways:
• Without the fan motor adapter (high static pressure). Factory setting.
• Connecting the fan motor adapter (CN22-CN24) (low static pressure).
This configuration is only for very short ducts.
The new configuration allow an extralow speed (v5) by using a factory
supplied connector which allows to work with less external static pressure
and less air flow in cases of very short duct, reducing the noise.
Fan performance curve at extralow speed (v5) is showed in chapter 3.1.6
Square washers
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