Installing The Outdoor Unit; Installing The Refrigerant Piping; Precautions For Devices That Use R410A Refrigerant - Mitsubishi Electric PUHZ-SW-AA Serie Para El Instalador

3. Installing the outdoor unit

B
600 Min. 500
Min. 50
Fig. 3-1

4. Installing the refrigerant piping

4.1. Precautions for devices that use R410A refrigerant

• Refer to 1.4. 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 flared
sections.
• Use C1220 copper phosphorus, for copper and cop-
per alloy seamless pipes, to connect the refrigerant
pipes. Use refrigerant pipes with the thicknesses
specified in the table to the below. Make sure the in-
sides of the pipes are clean and do not contain any
harmful contaminants such as sulfuric compounds,
oxidants, debris, or dust.
Always apply no-oxidation brazing when brazing
the pipes, otherwise, the compressor will be dam-
aged.
Warning:
When installing or relocating, or servicing the out-
door unit, use only the specified 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.
C
E
A M10 (3/8") bolt
B Base
C As long as possible.
D Vent
E Set deep in the ground
D
600
225 225
1050
(mm) • Be sure to install the unit in a sturdy, level surface to prevent rattling noises during
operation. (Fig. 3-1)
<Foundation specifications>
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 firmly 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 break-
down 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 instruc-
tions in order to minimize the risk of damage from
earthquakes, typhoons, or strong winds. An incor-
rectly installed unit may fall down and cause dam-
age or injuries.
Caution:
• Install be unit on a rigid structure to prevent excessive
operation sound or vibration.
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 hazards.
The use of any refrigerant other than that specified
for the system will cause mechanical failure or sys-
tem malfunction or unit breakdown. In the worst case,
this could lead to a serious impediment to securing
product safety.
Pipe size (mm)
Thickness (mm)
• Do not use pipes thinner than those specified
above.
• Use 1/2 H or H pipes if the diameter is 22.2 mm or
larger.
M10 (3/8")
120 mm
70 mm
320 kg
[6.35 [9.52 [12.7
0.8 0.8 0.8
[19.05 [22.2 [25.4
1.0 1.0 1.0
[15.88
1.0
[28.58
1.0
7