Mitsubishi Electric MSZ-AH09VA-H1 Operating And Installing Instructions page 68

Attach the electrical cover to the indoor unit and the
service panel to the outdoor unit securely.
If the electrical cover of the indoor unit and the service
panel of the outdoor unit are not attached securely,it
could result in fire or electric shock due to incoming
dust,water,etc.
Be sure to use the parts provided or specified parts
for the installation work.
The use of improper parts could cause accidents such
as fire,electric shock or injury due to,the unit falling or
leakage of water etc.
Do not use intermediate connection of the power
cord or the extension cord and do not connect many
devices to one AC outlet
It could cause fire or electric shock due to defective
contact,defective insulation,exceeding the permissible
load,etc.
Earthing must be done.
The socket for the air conditioner shall have exclusive
earth wires.If there is no earth wire or the wires are not
connected securely,electric shock may occur.Do not
connect the earth to gas pipe,water pipe,lightning rod or
telephone earth.
Do not install the unit in a place where inflammable
gas may leak.
If gas leaks and accumulates in the area around the unit,it
could cause an explosion.
Leakage protectors shall be installed.
If there are no leakage protectors,electric shock may occur.
2.Precautions for R410A refrigeration system
2-1 Air conditioners applicable to R410A refrigeration
Warning
●
Use C1220 copper phosphorus (for copper and copper
alloy seamless pipes) to connect the refrigerant pipes.
Make sure the insides of the pipes are clean and do
not contain any harmful contaminants such as sulfuric
compounds,oxidants,debris,or dust.
Use pipes with the specified thickness.
●
Use ester oil,ether oil,alkylbenzene oil (small amount)
as the refrigeration oil applied to the flared sections.
If mineral oil is mixed in the refrigeration oil,oil
deterioration may result.
●
Do not use refrigerant other than R410A.If another
refrigerant is used,the chlorine will cause the oil to
deteriorate.
●
Use the following tools specifically designed for use with
R410A refrigerant.The following tools are necessary to
use R410A refrigerant.Contact your nearest dealer for
any questions.
Tools (for R410A)
Pressure gauge
Dosing hose
Gas leak detector
Torque wrench
30
Flare tool
Size measurement gauge
Vacuum pump adapter
Electronic scale
Warning
Perform the drainage and piping work securely
according to the installation manual.
If there is defect in the drainage and piping work or the
indoor unit tilts,water could drop from the unit,soaking
and damaging household goods.
Do not use intermediate connection of the power
cord to connect the power supply.
This must cause error action of the unit,leading to
abnormal operation.
On the occasion where rain,small insects and
foreign material may enter the room,the external
holes on the wall through which the refrigerant pipe
penetrates shall be sealed.
Electrical work should be performed according to
the installation manual.Be sure to use an exclusive
circuit.
Please install the air conditioner strictly in accordance
with GB17790 Installation codes for household or
similar purpose air conditioners.
The unit shall be installed in accordance with
national wiring regulations.
Check that the refrigerant gas does not leak after
installation has been completed.
If the flexible power supply cord is damaged,it shall
be replaced by exclusive cord or the exclusive
assemblies purchased from the repair department.
Then,if you have more doubts,please contact your
dealer or the after-sales service center of our company.
●
Be sure to use the correct tools.If dust,debris,or
moisture enters the refrigerant lines,refrigeration oil
deterioration may result.
●
Do not use a charging cylinder.If a charging cylinder is
used,the composition of the refrigerant will change and
the efficiency will be lowered.
2-2 Precautions for equipment using R410A refrigerant
●
When installing or relocating the air conditioner,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.Air enclosed
in the lines can cause pressure peaks resulting in
rupture and other hazards.
MSZ-(P)AH09/12VA-H1
Liquid pipes
Gas pipe
Do not use pipes thinner than those specified above.
●
Do not share the vacuum pump with R22 refrigerant
systems.
Warning
6.35mm (Thickness 0.8mm)
9.52mm (Thickness 0.8mm)