Table Des Matières; Safety Precautions; Before Installation And Electric Work - Mitsubishi Electric CITY MULTI PUMY-71 Manuel D'installation

Contents
1. Safety precautions ......................................................................... 2
1.1. Before installation and electric work ............................... 2
1.2. Before installing .............................................................. 3
1.3. Before installing (moving) - electrical work ..................... 3
1.4. Before starting the trial run ............................................. 3
2. Combinations with indoor units ...................................................... 4
3. Checking the accessories .............................................................. 4
4. Selection of installation site ........................................................... 4
5. Service space around the outdoor unit .......................................... 5
5.1. When installing a single outdoor unit .............................. 5
5.2. When installing many outdoor units ............................... 5
6. Installing the unit ............................................................................ 6
7. Refrigerant piping installation ........................................................ 7
7.1. Areas of caution ............................................................. 7
7.2. Refrigerant piping system ............................................... 8
7.3. Caution for piping connection/valve operation .............. 11
7.4. How to install branch pipe ............................................ 12
7.5. Airtight test and evacuation .......................................... 13
7.6. Thermal insulation of refrigerant piping ........................ 14
7.7. Pump down .................................................................. 15

1. Safety precautions

1.1. Before installation and electric work

s Before installing the unit, make sure you read all the
"Safety precautions".
s This equipment may not be applicable to EN60555-
2:1987/EN61000-3-2:1995+A1:1998+A2:1998 and/or
EN60555-3:1987+A1:1991/EN61000-3-3:1995.
s s s s s This equipment may cause the adverse effect on the
same supply system.
s s s s s Please report to or take consent by the supply author-
ity before connection to the system.
s The "Safety precautions" provide very important points
regarding safety. Make sure you follow them.
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger
of injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage
to the unit.
Symbols used in the illustrations
: 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. (This
symbol is displayed on the main unit label.) <Color: Yellow>
: Indicates the main switch. (This symbol is displayed on the main
unit label.) <Color: Blue>
: Beware of electric shock (This symbol is displayed on the main
unit label.) <Color: Yellow>
: Beware of hot surface (This symbol is displayed on the main unit
label.) <Color: Yellow>
Warning:
Carefully read the labels affixed to the main unit.
2
8. Electrical work ............................................................................. 15
8.1. Caution ......................................................................... 15
8.2. Location of electrical parts box, PCB control section
and wiring ..................................................................... 16
8.3. Wiring location inside electrical parts box and PCB
control section .............................................................. 16
8.4. Wiring of transmission cables ....................................... 17
8.5. Wiring of main power supply and equipment
capacity ........................................................................ 19
9. Test run ........................................................................................ 19
9.1. Test run method ............................................................ 19
9.2. Corrective actions in case of trouble during test runs .. 19
9.3. Coping with remote controller trouble ........................... 20
9.4. The following phenomena do not represent trouble
(emergency) ................................................................. 21
10. Specifications .............................................................................. 21
Warning:
• The unit must be securely installed on a structure that can sus-
tain its weight. If the unit is mounted on an unstable structure, it
may fall down causing injuries.
• Use only specified cables for wiring. The connections must be
made securely without pulling on the terminals. Improper con-
nections or installation may generate heat or cause a fire.
• The unit should be installed according to the instructions in or-
der to minimize the risk of damage from earthquakes, typhoons
or strong winds. An improperly installed unit may fall down and
cause damage or injuries.
• When installing an optional air cleaner or humidifier, be sure to
use only products specified by Mitsubishi.
All accessories must be installed by an authorized technician.
The user must not try to install accessories. Improperly installed
accessories can cause water leakage, electric shock or fire.
• Do not turn on the power until installation has been completed.
Failure to do so may cause an electric shock or fire.
• The unit should not be installed by the user. Ask the dealer or
an authorized technician to install the unit. If the unit is installed
improperly, water leakage, electric shock or fire may result.
• Use only accessories authorized by Mitsubishi Electric and ask
the dealer or an authorized technician to install them. If acces-
sories are installed improperly, water leakage, electric shock or
fire may result.
• The Installation Manual details the suggested installation
method. Any structural alteration necessary for installation must
comply with local building code requirements.
• The user should never attempt to repair the unit or transfer it to
another site. If the unit is repaired improperly, water leakage,
electric shock or fire may result. If the air conditioner must be
repaired or moved, consult the dealer.
• All electric work must be performed by a licensed technician,
according to local regulations and the instructions given in this
manual.
The units should be powered by dedicated power lines. Power
lines with insufficient capacity or improper electrical work may
result in electric shock or fire.
• The terminal block cover of the outdoor unit must be firmly at-
tached to prevent entry of dust and moisture. Improper mount-
ing of the cover can cause electric shock or fire.