Mitsubishi Electric City Multi PMFY-P NBMU Serie Manual De Instalación página 7

3. Installing the refrigerant piping
E F
D
C
I
Fig. 3-4
C
D
H
G
A ·B
Gas piping
A
Liquid piping
B
Band (long)
C
4
Pipe cover
D
3
Turn the seam upward.
E
Press the pipe cover against
F
the sheet metal.
Refrigerant piping heat insulating
G
material
Wrap tightly
H
Cut off excess length of band.
I
3.3. Refrigerant piping
1) Indoor unit
Installing procedures (Fig. 3-4)
1. Remove the flare nuts and caps from the indoor unit.
2. Flare-cut the liquid and gas pipes then apply refrigerating machine oil (to be
locally procured) over the flare-cut seat surface.
3. Quickly connect the refrigerant piping.
* Remember to tighten the flare nuts with a double spanner.
4. Slide the supplied pipe cover over the gas piping until it is pressed against
3
the sheet metal inside the unit.
5. Slide the provided pipe cover over the liquid piping until it is pressed against
3
the sheet metal inside the unit.
6. Tighten the pipe cover at the both ends 15 - 20 mm (5/8 - 13/16 in.) with the
3
supplied bands 4.
en
6