Mitsubishi Electric PLFY-P32VBM-E [2/28] Safety precautions

► Before installing the unit, make sure you read all the “Safety precau-

tions”.

►

Please report to your supply authority or obtain their consent before

connecting this equipment to the power supply system.

2. Installing the indoor unit

2.1. Check the indoor unit accessories (Fig. 2-1)

The indoor unit should be supplied with the following accessories.

Accessory name Q’ty



Installation template 1



Washers (with insulation)

Washers (without insulation)



Pipe cover (for refrigerant piping joint)

Small diameter

Large diameter



Band (large)

Band (small)



Screw with washer (M5 × 25) for mounting grille 4



Drain socket 1



Insulation 1

Fig. 2-1









Contents

1. Safety precautions .....................................................................................2

2. Installing the indoor unit ............................................................................

3. Refrigerant pipe and drain pipe .................................................................

Warning:

Describes precautions that must be observed to prevent danger of injury or

death to the user.

Caution:

Describes precautions that must be observed to prevent damage to the unit.

After installation work has been completed, explain the “Safety Precautions,” use,

and maintenance of the unit to the customer according to the information in the

Operation Manual and perform the test run to ensure normal operation. Both the

Installation Manual and Operation Manual must be given to the user for keeping.

These manuals must be passed on to subsequent users.

: Indicates an action that must be avoided.

: Indicates that important instructions must be followed.

: Indicates a part which must be grounded.

: Indicates that caution should be taken with rotating parts.

: Indicates that the main switch must be turned off before servicing.

: Beware of electric shock.

: Beware of hot surface.

ELV

: At servicing, please shut down the power supply for both the Indoor and

Outdoor Unit.

Warning:

Carefully read the labels afﬁxed to the main unit.

Caution:

Appliances not accessible to the general public.

Install the indoor unit at least 2.5 m above ﬂoor or grade level.

Warning:

• Ask the dealer or an authorized technician to install the air conditioner.

• The user should never attempt to repair the unit or transfer it to another

location.

• Install the unit at a place that can withstand its weight.

• Use only speciﬁed cables for wiring. The wiring connections must be made

securely with no tension applied on the terminal connections. Also, never

splice the cables for wiring (unless otherwise indicated in this document).

Failure to observe these instructions may result in overheating or a ﬁre.

• Use only accessories authorized by Mitsubishi Electric and ask the dealer

or an authorized technician to install them.

• Do not touch the heat exchanger ﬁns.

• Install the air conditioner according to this Installation Manual.

• Have all electric work done by a licensed electrician according to local

regulations.

• The appliance shall be installed in accordance with national wiring regula

tions.

Caution:

• Do not use the existing refrigerant piping, when use R410A or R407C refrig-

erant.

• Use ester oil, either oil or alkylbenzene (small amount) as the refrigerator

oil to coat ﬂares and ﬂange connections, when use R410A or R407C refrig-

erant.

• Do not use the air conditioner where food, pets, plants, precision instru

ments, or artwork are kept.

• Do not use the air conditioner in special environments.

• Ground the unit.

• Install an leak circuit breaker, as required.

• Use power line cables of sufﬁcient current carrying capacity and rating.

• Use only a circuit breaker and fuse of the speciﬁed capacity.

• Do not touch the switches with wet ﬁngers.

• Do not touch the refrigerant pipes during and immediately after operation.

• Do not operate the air conditioner with the panels and guards removed.

• Do not turn off the power immediately after stopping operation.

Note:

The phrase “Wired remote controller” in this installation manual refers only to the PAR-31MAA.

If you need any information for the other remote controller, please refer to either the installation manual or initial setting manual which are

included in these boxes.

• If the air conditioner is installed in a small room, measures must be taken

to prevent the refrigerant concentration from exceeding the safety limit

even if the refrigerant should leak.

• If the supply cord is damaged, it must be replaced by the manufacturer, its

service agent or similarly qualiﬁed persons in order to avoid a hazard.

• The cut face punched parts may cause injury by cut, etc. The installers are

requested to wear protective equipement such as gloves, etc.

• When installing or relocating, or servicing 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.

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.

1. Safety precautions

4. Electrical work ...........................................................................................6

5. Installing the grille ....................................................................................

6. Test run ....................................................................................................

Mitsubishi Electric PLFY-P32VBM-E [2/28] Safety precautions

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