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2.2. Accessories
• For installation purposes, be sure to use the parts supplied by the manufacturer or
other prescribed parts. The use of non-prescribed parts can cause serious accidents
such as the unit falling, water leakage, electric shock, or fire.
• The following installation parts are supplied. Use them as required.
• Keep the Installation Manual in a safe place and do not discard any other accessories
until the installation work has been completed.
Name and shape
Installation Manual
Drain pipe
2.3. Pipe requirements
• Do not use existing pipes.
• Use pipes that have clean external and internal sides without any contamination which
may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.
• It is necessary to use seamless copper pipes.
Material: Phosphor deoxidized seamless copper pipes.
It is desirable that the amount of residual oil is less than 40 mg/10 m.
• Do not use copper pipes that have a collapsed, deformed, or discolored portion
(especially on the interior surface). Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
• Improper pipe selection will degrade performance. As an air conditioner using
R32(R410A) incurs pressure higher than when using conventional refrigerant, it is
necessary to choose adequate materials.
• Thicknesses of copper pipes used with R32(R410A) are as shown in the table.
• Never use copper pipes thinner than those indicated in the table even if they are
available on the market.
Thicknesses of Annealed Copper Pipes
Pipe outside diameter [mm (in.)]
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
■ Protection of pipes
• Protect the pipes to prevent the entry of moisture and dust.
• Especially, pay attention when passing the pipes through a hole or connecting the
end of a pipe to the outdoor unit.
Working period
Location
1 month or more
Outdoor
Less than 1 month
Indoor
■ Refrigerant pipe size and allowable piping length
• Keep the piping length between the indoor unit and outdoor unit within the allowable
tolerance.
• The maximum lengths of this product are shown in the table. If the units are further
apart than this, correct operation cannot be guaranteed.
En-4
WARNING
Q'ty
Description
This manual
1
For outdoor unit drain piping work
(May not be supplied, depending on
1
the model.)
CAUTION
Thickness [mm]
0.80
0.80
0.80
1.00
1.20
Protection method
Pinch pipes
Pinch or tape pipes
-
Pinch or tape pipes
CAUTION
Model
Pipe diameter <Liquid/Gas> [mm (in.)]
Max. piping length (L)
[m]
Max. height difference (H)
<Indoor unit to outdoor unit>
[m]
View (Example)
2.4. Electrical requirements
• Be sure to install a breaker of the specified capacity.
• Regulation of cables and breaker differs from each locality, refer in accordance with
local rules.
Voltage rating
Operating range
Cable
Conductor size [mm²]
1.5 (09~22 model)
Power Supply Cable
2.5 (24 model)
1.5
Connection Cable
Selected sample: Select the correct cable type and size according to the country or
*1
region's regulations.
* Limit the voltage drop less than 2 %. Increase the cable diameter if voltage drop is 2 %
or more.
Breaker capacity
Model
09 model
12/14 model
18/22 model
24 model
• Select the breaker that enough load current can pass through it.
• Before starting work check that power is not being supplied to all poles of the indoor
unit and outdoor unit.
• Install all electrical works in accordance to standard.
• Install the disconnect device with a contact gap of at least 3 mm in all poles nearby
the units. (Both indoor unit and outdoor unit)
2.5. Additional charge amount
• When adding refrigerant, add the refrigerant from the charging port at the completion
of work.
Refrigerant suitable for a piping length of 15 m (09/12/14 model) / 20 m (18/22/24 model) is
charged in the outdoor unit at the factory.
When the piping is extended longer than the factory standard, additional charging is
necessary.
For the additional amount, see the following table.
Model
Pipe length
09
Additional
12/14
refrigerant
18/22/24
Between 15 m and 30 m, when using a connection pipe other than that in the table, charge
additional refrigerant with 20 g/1 m as the criteria.
2.6. General information
• If the unit is operated outside the operating temperature range, various protective
circuit mechanisms may be activated and the unit may stop operating. For the
operating temperature range, refer to the product FICHE or the specification manual.
09
12/14
18
6.35 (1/4) /
6.35 (1/4) /
9.52 (3/8)
12.7 (1/2)
20
25
30
15
20
20
L
CAUTION
1 Φ 230 V (50 Hz)
198 to 264 V
*1
Type
2 wire + Ground
Type60245 IEC57
3 wire + Ground
Type60245 IEC57
Earth leakage breaker
[A]
[mA]
10
13
16
20
CAUTION
15 m
20 m
25 m
30 m
+ 100 g
―
―
None
None
+ 100 g
+ 200 g
―
None
None
+ 100 g
+ 200 g
22
24
30
30
25
25
H
Remarks
1 Φ 230 V
1 Φ 230 V
30
Rate
20 g/m
20 g/m
20 g/m
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