Mitsubishi Electric CITY MULTI PUMY-SP112 Installation Manual page 7

2. Installation location
A
Fig. 2-15
3. Installing the outdoor unit
A
B
A D
B E
C
Fig. 3-1
4. Installing the refrigerant piping
B
Fig. 2-16
E
C
D
225 225
2.6.3. Windy location installation
1
A
2
B
Installing the outdoor unit
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 minimize
the risk of damage from earthquakes, typhoons, or strong winds. An incor-
rectly installed unit may fall down and cause damage or injuries.
Caution:
• Install unit on a rigid structure to prevent excessive operation sound or vibra-
tion.
4.1. Precautions for devices that use R410A refrigerant
• Refer to 1.5. 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 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
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 air conditioner, 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 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.
• Do not use pipes thinner than those speci ed above.
• The thicknesses listed in the table above are based on Japanese standards.
Use pipes with a maximum working pressure of 4.15 MPa [601 PSIG] or
higher according to local standards.
en
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