Mitsubishi Electric PUMY-P-YHM Serie Manual De Instalación página 9

6. Electrical work
Example of a group operation system with multiple outdoor units (Shielding wires and address setting are
necessary.)
<Examples of Transmission Cable Wiring>
I M-NET Remote Controller (Fig. 6-2)
I MA Remote Controller (Fig. 6-3)
<Wiring Method and Address Settings>
a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well for all OC-OC, and IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3) of each outdoor unit (OC) to terminals M1, M2
and terminal S on the transmission cable block of the indoor unit (IC).
c. Connect terminals 1 (M1) and 2 (M2) on the transmission cable terminal block of the indoor unit (IC) that has the most recent address within the same group to the
terminal block on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor unit (OC).
e. The jumper connector CN41 on the control panel does not change.
f. Connect the terminal S on the terminal block for central control for the power supply unit to the ground terminal
g. Set the address setting switch as follows.
Unit Range
IC (Main) 01 to 50
IC (Sub) 01 to 50
Outdoor Unit 51 to 100
M-NET R/C (Main) 101 to 150
M-NET R/C (Sub) 151 to 200
MA R/C
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on.
<Permissible Lengths>
1 M-NET Remote controller
• Max length via outdoor units: L +L
1
• Max transmission cable length: L
• Remote controller cable length: r
If the length exceeds 10 m, use a 1.25 mm
maximum length and overall length.
2 MA Remote controller
• Max length via outdoor unit (M-NET cable): L
• Max transmission cable length (M-NET cable): L
• Remote controller cable length:c
I M-NET Remote Controller
OC
(51)
TB3
M1M2 S M1 M2 S
M1 M2 S
TB7
D
(101)
OC L
3
(53)
TB3
M1M2 S M1 M2 S
M1 M2 S
TB7
Power Supply
Unit
M1M2S
G-50A
M1M2 S
A : Group 1
Fig. 6-2
B : Group 3
C : Group 5
D : Shielded Wire
E : Sub Remote Controller
( ): Address
Use the most recent address within the same group of indoor units
Use an address, other than that of the IC (Main) from among the units within the same group of indoor units. This must be
in sequence with the IC (Main)
Use the most recent address of all the indoor units plus 50
* The address automatically becomes "100" if it is set as "01 - 50".
Set at an IC (Main) address within the same group plus 100
Set at an IC (Main) address within the same group plus 150
– Unnecessary address setting (Necessary main/sub setting)
+L +L and L +L +L +L and L +L
2 3 4 1 2 3 5 1
and L +L and L +L and L and L
1 3 4 3 5 6 2
, r , r +r , r 10 m (0.5 to 1.25 mm
=
1 2 2 3 4
+L +L +L and L +L +L
1 2 3 4 1 2
and L +L and L and L
1 3 4 6
and c and c
+c +c +c +c +c
1 1 2 3 1 2 3
L
1
A C
IC IC IC
(01) (02) (05)
TB5 TB5 TB5
M1 M2 S M1 M2 S
r
3
A B A B A B
(105) (155)
RC RC RC
E
L
4
IC IC
IC
(03) (04) (07)
TB5 TB5 TB5
M1 M2 S M1 M2 S
A B
(104)
RC
B
Setting Method
2
+L +L 500 m (1.25 mm or more)
=
2 6 7
+L and L 200 m (1.25 mm 2 or more)
=
6 7
2 )
2
shielded wire. The length of this section (L
+L 500 m (1.25 mm 2 or more)
=
6 7
2
+L and L = 200 m (1.25 mm or more)
2 6 7
2
200 m (0.3 to 1.25 mm )
=
4
I MA Remote Controller
OC
IC
(51)
(06)
TB3
TB5
M1 M2 S M1 M2 S M1M2 S
TB7
D
OC
(53)
TB3
M1M2 S
M1 M2 S
TB7
Power Supply
Unit
M1M2 S
G-50A
M1M2 S
in the electrical component box.
) should be included in the calculation of the
8
L
1
A
IC IC IC
c
2
(01) (02) (05)
TB5 TB15 TB5 TB15 TB5 TB15
M1 M2 S 1 2 M1 M2 S 1 2 M1 M2 S
A B A B
MA
L L
3 4
IC
IC IC
(04) (07)
(03)
TB5 TB15 TB5 TB15 TB5 TB15
1 2 M1 M2 S 1 2
M1 M2 S M1 M2 S
A B
MA
B
Fig. 6-3
C
IC
c
2
(06)
TB5 TB15
1 2 M1 M2 S 1 2
c
4
A B
MA MA
E
1 2
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