Mitsubishi Electric Mr.SLIM PKA-M-KA Series Installation Manual page 6

3. Installing the indoor unit
C
D
Fig. 3-11
1 )
A B
Fig. 3-12
1 )
2 )
Fig. 3-13
A
B
E
2 )
C
D
3 )
1. Attach the charge nut 5 to the liquid pipe side joint portion.
2. Pressurize by filling with nitrogen gas from the charge nut.
Do not pressurize to the current constant pressure all at once. Pressurize
gradually.
not decrease.
not decrease.
refrigerant pressure.
3. If the specified pressure holds for about one day and does not decrease, the
pipes have passed the test and there are no leaks.
about 0.01 MPa. Make the necessary corrections.
source of the gas leak.
2. Wrap the felt tape 3 in the range of the refrigerant piping and drain hose which
will be housed within the piping space of the indoor unit.
3 securely from the base for each of the refrigerant piping
and the drain hose.
3 at one-half of the tape width.
A
Liquid pipe
B
Gas pipe
C
D
Drain hose
E 3
Felt tape
3. Be careful that the drain hose is not raised, and that contact is not made with
the indoor unit box body.
Do not pull the drain hose forcefully because it might come out.
the indoor unit box body.
Arrange the drain hose at the underside of the piping and wrap it with felt
tape 3.
3 starting from the base. (Overlap the felt tape at
A
Cut off for right piping.
B
Cut off for lower piping.
4. Drain hose replacement See 5. Drainage piping work
Be sure to replace the drain hose and the drain cap for the left and rear left
piping. Dripping may occur if you forget to install or fail to replace these parts.
C
Drain cap
the indoor unit box body.
3 starting from the base. (Overlap the felt tape at
D
Cut off for left piping.
See page 10.
3 with vinyl tape.