Selecting The Mounting Position; Connection Pipe Requirement; Indoor Unit; Electrical Requirement - Fujitsu R410A Installation Instruction

SELECTING THE MOUNTING POSITION

WARNING
Install at a place that can withstand the weight of the in-
door and outdoor units and install positively so that the
units will not topple or fall.
CAUTION
1 Do not install where there is the danger of combustible
gas leakage.
2 Do not install near heat sources.
3 If children under 10 years old may approach the unit,
take preventive measures so that they cannot reach
the unit.
Especially, the installation place is very important for the split type air
conditioner because it is very difficult to move from place to place after the
first installation.
Decide the mounting position together with the customer as follows:
The discharge direction can be selected as shown below.
100 mm (4") or more 100 mm (4") or more
(4 directions)
(3 directions)
Piping position
CAUTION
Since 2-way outlet as shown below causes performance
problems, do not set it.
Pipe

INDOOR UNIT

(1) Install the indoor unit on a place having a sufficient strength so that it
withstands against 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) The ceiling rear height as shown in figure.
(5) A place from where the air can be distributed evenly throughout the
room by the unit.
(6) A place from where drainage can be extracted outdoors easily.
(7) Install the unit where noise and vibrations are not amplified.
Strong and durable ceiling
Obstruction
Floor
100 mm (4") or more
(2 directions) (2 directions)
100 mm (4") or more
Pipe
1,000 mm (39")
or more
This mechanism enables the cassette body to move 35 mm (1-3/8")
downward and realizes installation to the space of 215 or 265 mm
(8-15/32" or 10-15/32"). No special works and option is needed.
You can select 2-way setting
[18 to 24 type]
(A) Standard setting
[30 to 54 type]
(A) Standard setting

CONNECTION PIPE REQUIREMENT

GENERAL
This INSTALLATION INSTRUCTION SHEET briefly outlines where and
how to install the air conditioning system. Please read over the entire set
of instructions for the indoor and outdoor units and make sure all acces-
sory parts listed are with the system before beginning.
MODEL
Liquid
Diameter
Gas
• • • • • Use pipe with water-resistant heat insulation.
CAUTION
Install heat insulation around both the gas and liquid pipes.
Failure to do so may cause water leaks.
Use heat insulation with heat resistance above 248 °F. (Re-
verse cycle model only)
In addition, if the humidity level at the installation location
of the refrigerant piping is expected to exceed 70%, install
heat insulation around the refrigerant piping. If the ex-
pected humidity level is 70-80%, use heat insulation that
is 15 mm (19/32") or thicker and if the expected humidity
exceeds 80%, use heat insulation that is 20 mm (3/4") or
thicker.
If heat insulation is used that is not as thick as specified,
condensation may form on the surface of the insulation.
In addition, use heat insulation with heat conductivity of
0.045 W/(m·K) or less (at 68 °F).

ELECTRICAL REQUIREMENT

• • • • • Electric wire size:
MAX.
2
Connection cord (mm )
MIN.
• • • • • Install all electrical works in accordance to the standard.
• • • • • Install the disconnect device with a contact gap of at least 3 mm (1/8")
in all poles nearby the units. (Both indoor unit and outdoor unit)
• • • • • Install the circuit breaker nearby the units.
(B) Slender setting
(B) Slender setting
14000, 18000 BTU/h 24000, 36000,
model 42000 BTU/h model
6.35 mm (1/4 in.) 9.52 mm (3/8 in.)
12.70 mm (1/2 in.) 15.88 mm (5/8 in.)
2.5
1.5