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3. Installing the outdoor unit
M10 (3/8") bolt
Base
As long as possible.
Vent
Set deep in the ground
SW40, 50
SW40, 50
500
Min. 650
Min.
350
150
4. Installing the refrigerant piping
4.1. Precautions for devices that use R410A refrigerant
• Refer to 1.5. for precautions not included below on using outdoor units with
R410A refrigerant.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil
applied to the ared sections.
• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes,
to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses
specified in the table to the below. Make sure the insides of the pipes are
clean and do not contain any harmful contaminants such as sulfuric com-
pounds, oxidants, debris, or dust.
Always apply no-oxidation brazing when brazing the pipes, otherwise, the
compressor will be damaged.
SW75-120
SW75-120
600
500
150
800
Fig. 3-1
(mm)
• Be sure to install the unit in a sturdy, level surface to prevent rattling noises
during operation. (Fig. 3-1)
<Foundation speci cations>
Foundation bolt
Thickness of concrete
Length of bolt
Weight-bearing capacity
• Make sure that the length of the foundation bolt is within 30 mm of the bottom
surface of the base.
• Secure the base of the unit rmly with four-M10 foundation bolts in sturdy loca-
tions.
Installing the outdoor unit
• Do not block the vent. If the vent is blocked, operation will be hindered and
breakdown may result.
• In addition to the unit base, use the installation holes on the back of the unit to
attach wires, etc., if necessary to install the unit. Use self-tapping screws (ø5 ×
15 mm or less) and install on site.
Warning:
• The unit must be securely installed on a structure that can sustain its
weight. If the unit is mounted on an unstable structure, it may fall down
and cause damage or injuries.
• The unit must be installed according to the instructions in order to mini-
mize the risk of damage from earthquakes, typhoons, or strong winds. An
incorrectly installed unit may fall down and cause damage or injuries.
Min. 360
600
Min. 10
175
175
950
Warning:
When installing or relocating, or servicing the outdoor unit, use only the
speci ed refrigerant (R410A) to charge the refrigerant lines. Do not mix it with
any other refrigerant and do not allow air to remain in the lines.
If air is mixed with the refrigerant, then it can be the cause of abnormal high
pressure in the refrigerant line, and may result in an explosion and other haz-
ards.
The use of any refrigerant other than that speci ed for the system will cause
mechanical failure or system malfunction or unit breakdown. In the worst
case, this could lead to a serious impediment to securing product safety.
Pipe size (mm)
6.35
Thickness (mm)
0.8
• Do not use pipes thinner than those speci ed above.
• Use 1/2 H or H pipes if the diameter is 19.05 mm or larger.
M10 (3/8")
120 mm
70 mm
320 kg
SW160, 200
SW160, 200
*
600
Min. 500
600
225
Min. 50
1050
* When installing a single outdoor unit, the clearance is
15 mm or more.
9.52
12.7
15.88
19.05
22.2
0.8
0.8
1.0
1.0
1.0
225
25.4
28.58
1.0
1.0
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