Mitsubishi Electric PFD-P250 Installation Manual page 9

1. Safety precautions ........................................................................................
1.3. Before getting installed .............................................................. 10
2. Indoor unit accessories .............................................................................. 10
3. Selecting an installation site ....................................................................... 10
3.1. Securing installation and service space .................................... 11
........................................................................................ 11
.............................................................................. 11
.................................................................................. 11
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
:
:
result.
be released.
result.
............................................
....................
..................... 10
........................................................ 10
....................................... 10
........................................... 11
.......................... 11
7. Electrical wiring .......................................................................................... 12
7.1. Power supply wiring .................................................................. 12
7.2. Connecting remote controller, indoor and outdoor transmission
cables ........................................................................................ 13
7.3. Connecting electrical connections ............................................. 13
8. Remote Controller Operation Problems and Solutions ..............................
10. Separating the top and bottom of the unit ..................................................
- If a different refrigerant or air is mixed with the original refrigerant, the re-
frigerant cycle may malfunction and the unit may be damaged.
- Consult the dealer regarding the appropriate measures to prevent the safety
other heat source, it may generate noxious gases.
- If the pressure switch, thermal switch, or other protection device is shorted
and operated forcibly, or parts other than those specified by Mitsubishi
- The old refrigerant and refrigerator oil in the existing piping contains a
large amount of chlorine which may cause the refrigerator oil of the new
-
unit to deteriorate.
- Contaminants on the inside of the refrigerant piping may cause the refrig-
erant residual oil to deteriorate.
- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and
compressor trouble may result.
- The refrigerator oil will degrade if it is mixed with a large amount of mineral
oil.
- If gas refrigerant is used to seal the system, the composition of the refrig-
erant in the cylinder will change and performance may drop.
............................................. 11
............................................................. 11
...................................................................... 12
..................................................................... 13
........................................................
................................
-
9