Mitsubishi PUMY-P36NKMU1 - 3. Installing the Outdoor Unit; 4. Installing the Refrigerant Piping; 4.1. Precautions for R410 A Refrigerant

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3. Installing the outdoor unit
• Besuretoinstalltheunitinasturdy,levelsurfacetopreventrattlingnoisesdur-
ing operation. (Fig. 3-1)
<Foundationspecications>
Foundation bolt M10 (3/8")
Thickness of concrete 120 mm (4-23/32")
Length of bolt 70 mm (2-3/4")
Weight-bearing capacity 320 kg (705 lbs)
• Makesurethatthelengthofthefoundationboltiswithin30mm(1-3/16")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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,ø13/16"×19/32"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.
Caution:
• Install the unit on a rigid structure to prevent excessive operation sound or
vibration.
4. Installing the refrigerant piping
4.1. Precautions for devices that use R410A refrigerant
• Refertopage3forprecautionsnotincludedbelowonusingairconditionerswith
R410A refrigerant.
• Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigerationoilap-
pliedtothearedsections.
• 
UseC1220copperphosphorus,forcopperandcopperalloyseamlesspipes,tocon-
necttherefrigerantpipes.Userefrigerantpipeswiththethicknessesspecied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 compounds, oxidants, debris, or dust.
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 pres-
sure in the refrigerant line, and may result in an explosion and other hazards.
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.
ø6.35 mm (1/4 inch), ø9.52 mm (3/8 inch),
ø12.7mm(1/2inch)
Thickness 0.8 mm (1/32 inch)
ø15.88mm(5/8inch) Thickness 1.0 mm (5/128 inch)
• Donotusepipesthinnerthanthosespeciedabove.
• The thicknesses listed in the table above are based on Japanese stand-
ards. Use pipes with a maximum working pressure of 4.15 MPa [601 PSIG]
or higher according to local standards.
Fig. 3-1
B
(inch)
A M10 (3/8") bolt
B Base
C As long as possible
D Vent
E Set deep in the ground
C
E
D
A
Min. 18-11/16
Min. 1
Max. 1-3/16
23-5/8 23-5/8
8-7/8 8-7/8
13
14-9/16
63/64
41-11/32
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