2
s
Before installing the unit, make sure you read all the “Safety precau-
tions”.
s
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 Op-
eration Manual and perform the test run to ensure normal operation. Both the Instal-
lation Manual and Operation Manual must be given to the user for keeping. These
manuals must be passed on to subsequent users.
Contents
Warning:
• Ask the dealer or an authorized technician to install the air conditioner.
• Install the unit at a place that can withstand its weight.
• Use the specified cables for wiring.
• 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 regu-
lations.
• 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 equipement such as gloves, etc.
1. Safety precautions ................................................................................... 2
2. Installing the indoor unit ........................................................................... 2
3. Refrigerant pipe and drain pipe ............................................................... 4
4. Electrical work .......................................................................................... 6
5. Installing the grille .................................................................................... 7
6. Test run (Fig. 6-1) ..................................................................................... 9
1. Safety precautions
: 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:
• 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 refrigerant.
• 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.
• 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.
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
1
Installation template
1
2
Washers (with insulation)
4
Washers (without insulation)
4
3
Pipe cover (for refrigerant piping joint)
small diameter
1
large diameter
1
4
Band (large)
6
Band (small)
2
5
Screw with washer (M5
×
25) for mounting grille
4
6
Drain socket
1
7
Insulation
1
8
Flare nut 3/8 F P50
1
9
Flare nut 5/8 F P50
1
0
Flare nut 3/4 F P100/P125
1
3
2
5
4
7
6
Fig. 2-1
1
8
9
0
