Installation Dimensions (Ceiling Concealed Type); Installation Dimensions (Wall Mounted Type/Floor Standing Concealed Type); Installation The Unit (Ceiling Concealed Type) - Fujitsu ARHG12LLTB Installation Manual

• If children under 10 years old may approach the unit, take preventive measures so
that they cannot reach the unit.
• Decide the mounting position with the customer as follows:
(1) Install the indoor unit in a location having sufficient strength to support the weight of
the indoor unit.
(2) The inlet and outlet ports should not be obstructed; the air should be able to blow all
over the room.
(3) Leave the space required to service the air conditioner.
(4) Locate where the air can be distributed evenly throughout the room by the unit.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the connection pipe can be easily installed.
(7) Install the unit where the drain pipe can be easily installed.
(8) Install the unit where noise and vibration is not amplified.
(9) Take servicing, etc., into consideration and leave the spaces. Also install the unit
where the filter can be removed.
3.2A. Installation dimensions (Ceiling concealed type)
Provide a Service access for inspection purposes.
Do not place any wiring or illumination in the service space, as they will impede service.
Installation Dimensions
Strong and durable ceiling
Left
side
150 mm
or more
20 mm or more
20 mm or more
Service access
Adjust the wind direction in the room depending on the shape of blow out opening.
Unit
Service space
En-3
CAUTION
Indoor unit
400 mm
or more
300 mm or more
Ceiling
Floor
Service access
Control
box
400 mm
or more
3.2B. Installation dimensions (Wall mounted type/Floor
standing concealed type)
The wall mounted type/floor standing concealed type requires a temperature
correction setting. Perform this in "7.3. Function setting ".
10 mm
or less
Left side
150 mm
or more
150 mm
or more
Left side
150 mm
or more
Right
side
150 mm
or more
3.3A. Installation the unit (Ceiling concealed type)
• Install the air conditioner in a location which can withstand a load do at least 5
times the weight of the main unit and which will not amplify sound or vibration. If the
installation location is not strong enough, the indoor unit may fall and cause injuries.
• If the job is done with the panel frame only, there is a risk that the unit will come
loose. Please take care.
3.3A.1. UNIT INSTALLATION EXAMPLE (CEILING CONCEALED
TYPE)
Connect the locally purchased duct.
(1) Inlet side
• Connect the duct to the locally purchased inlet flange.
• Connect the flange to the body with the locally purchased tapping screws.
• Wind the inlet flange connecting to the duct with the aluminum tape etc. to avoid the
air discharge.
• When the duct is connected to inlet side, remove contained filter and surely attach
locally purchased filter at inlet opening.
(2) Outlet side
• Connect the duct with adjusting inside of outlet flange.
• Wind the outlet flange connecting to the duct with the aluminum tape etc. to avoid the
air discharge.
• Insulate the duct to avoid the dew condensation.
• Check that duct work does not exceed the range of external static pressure of
equipment.
• Make sure to insulate ducts to avoid the dew condensation.
• Make sure to insulate between ducts and walls if metal ducts are used.
• Please explain handling and washing methods of locally purchased materials to the
customer.
• To prevent people from touching the parts inside the unit, be sure to install grilles on
the inlet and outlet ports. The grilles must be designed in such a way that cannot be
removed without tools.
• When connecting the duct to the outlet port of the indoor unit, be sure to insulate the
outlet port and the installation screws to prevent water from leaking around the port.
AR07/09/12/14/18 Model
• Set the static pressure outside the unit to 90 Pa or less (the allowable range is
between 0 and 90 Pa).
10 mm
or less
Right side
(PIPE side)
Grille
Inlet air
Strong and
durable floor
Strong and
400 mm 20 mm
durable floor
or more or more
Right side
(PIPE side)
Grille
Inlet air
Strong and
durable floor
Strong and
400 mm 20 mm
durable floor
or more or more
WARNING
CAUTION
CAUTION
150 mm
or more
20 mm
or more
Duct
150 mm
or more
20 mm
or more