Mounting The Indoor Unit; Installing The Refrigerant Piping - Mitsubishi Electric Mr.SLIM PKA-M60KA Manuel D'installation

3. Installing the indoor unit
B
Fig. 3-14
B
A
Fig. 3-15
 PKA-M60, 71, 100KA(L)
B
C
E
D
Fig. 3-16

4. Installing the refrigerant piping

A B
45±2°
Fig. 4-1
A Flare cutting dimensions
Copper pipe O.D. Flare dimensions øA
(mm) dimensions (mm)
ø9.52 12.8 - 13.2
ø15.88 19.3 - 19.7
C
A
C
D
A
C
3.5. Mounting the indoor unit
1. Affix the mount board 1 to the wall.
2. Hang the indoor unit on the hook positioned on the upper part of the mount
board.
Rear, right and lower piping (Fig. 3-14)
3. While inserting the refrigerant piping and drain hose into the wall penetration
hole (penetration sleeve), hang the top of the indoor unit to the mount board 1.
4. Move the indoor unit to the left and right, and verify that the indoor unit is hung
securely.
5. Fasten by pushing the bottom part of the indoor unit onto the mount board 1.
(Fig. 3-15)
* Check that the knobs on the bottom of the indoor unit are securely hooked into
the mount board 1.
6. After installation, be sure to check that the indoor unit is installed level.
Mount board
A 1
Indoor unit
B
Hook
C
square hole
D
Left and left rear piping (Fig. 3-16)
3. While inserting the drain hose into the wall penetration hole (penetration
sleeve), hang the top of the indoor unit to the mount board 1.
Giving consideration to the piping storage, move the unit all the way to the left
side, then cut part of the packaging carton and wrap into a cylindrical form as
illustrated in the diagram. Hook this to the rear surface rib as a spacer, and raise
the indoor unit.
4. Connect the refrigerant piping with the site-side refrigerant piping.
5. Fasten by pushing the bottom part of the indoor unit onto the mount board 1.
* Check that the knobs on the bottom of the indoor unit are securely hooked into
the mount board 1.
6. After installation, be sure to check that the indoor unit is installed level.
Indoor unit
A
Packaging carton
B
Cut off
C
Wrap into a cylindrical form
D
Fasten with tape
E
4.1. Precautions
For devices that use R32/R410A refrigerant
• Use alkylbenzene oil (small amount) as the refrigeration oil applied to the
flared 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 below. Make sure the insides of the pipes
are clean and do not contain any harmful contaminants such as sulfuric
compounds, oxidants, debris, or dust.
Warning:
W hen installing or relocating, or servicing the air conditioner, use only the
specified refrigerant written on outdoor unit 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
hazards.
The use of any refrigerant other than that specified 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.
ø9.52 thickness 0.8 mm
ø15.88 thickness 1.0 mm
• Do not use pipes thinner than those specified above.
D
4.2. Connecting pipes (Fig. 4-1)
• When commercially available copper pipes are used, wrap liquid and gas pipes
with commercially available insulation materials (heat-resistant to 100 °C or
more, thickness of 12 mm or more).
• The indoor parts of the drain pipe should be wrapped with polyethylene foam
insulation materials (specific gravity of 0.03, thickness of 9 mm or more).
• Apply thin layer of refrigerant oil to pipe and joint seating surface before
tightening flare nut.
• Use two wrenches to tighten piping connections.
• Use refrigerant piping insulation provided to insulate indoor unit connections.
Insulate carefully.
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