Tabla De Contenido; Safety Precautions; Installing The Indoor Unit - Mitsubishi Electric CITY MULTI PLFY-P NFMU-E Serie Manual De Instalación

Contents
1. Safety precautions .....................................................................................2
2. Installing the indoor unit ............................................................................2
3. Refrigerant pipe and drain pipe ................................................................. 5
Note:
The phrase "Wired remote controller" in this installation manual refers to the PAR-32MAA.
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.

1. 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.
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.
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 regulations.
Caution:
• Do not use the existing refrigerant piping.
• Use ester oil, either oil or alkylbenzene (small amount) as the refrigerator oil
to coat flares and flange connections.
• Do not use the air conditioner where food, pets, plants, precision instruments,
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.

2. Installing the indoor unit

1
3
5
Fig. 2-1
2
2
4
6
4. Electrical work ...........................................................................................6
5. Installing the grille ....................................................................................13
6. Test run ....................................................................................................17
: 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.
: 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.
Install the indoor unit at least 2.4 m (8 ft) above floor or grade level.
For appliances not accessible to the general public.
• 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.
• 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.
• The cut face punched parts may cause injury by cut, etc. The installers are
requested to wear protective equipment 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.
• 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.
• If the unit is run for long hours when the air above the ceiling is at high tem-
perature/high humidity (dew point above 26 °C, 79 °F), dew condensation may
be produced in the indoor unit or the ceiling materials. When operating the
units in this condition, add insulation material (10 to 20 mm, 13/32 to 15/32
inch) to the entire surface of the unit and ceiling materials to avoid dew con-
densation.
2.1. Check the indoor unit accessories (Fig. 2-1)
The indoor unit should be supplied with the following accessories.
Accessory name
Installation template
1
Washers (with insulation)
2
Washers (without insulation)
Pipe cover (for refrigerant piping joint)
small diameter (liquid)
3
large diameter (gas)
Band (large)
Band (middle)
4
Band (small) * Use only one.
Drain socket
5
Insulation
6
Q'ty
1
4
4
1
1
6
2
2
1
1