Wiring Of Main Power Supply And Equipment Capacity - Mitsubishi Electric PUHY-P-YGM-A Installationshandbuch

2 Wiring examples
• Controller name, symbol and allowable number of controllers.
Name
Outdoor unit Variable capacity unit controller
Indoor unit Indoor unit controller
Remote controller Remote controller (*1)
Other Transmission booster unit
*1 A transmission booster (RP) may be required depending on the number of connected indoor unit controllers.
Example of a group operation system with multiple outdoor units (Shielding wires and address setting are
necessary.)
<Examples of transmission cable wiring>
[Fig. 10.3.1] M-NET Remote Controller (P.5)
[Fig. 10.3.2] MA Remote Controller (P.5)
[Fig. 10.3.3] Transmission booster unit (P.5)
<A> Change the jumper connector from CN41 to CN40
<B> SW2-1:ON
<C> Keep the jumper connector on CN41
A Group 1 B Group 3
( ) Address
<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 earth 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. On one outdoor unit only, change the jumper connector on the control panel from CN41 to CN40.
f. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which the jumper connector was inserted into CN40 in Step
above to the earth terminal in the electrical component box.
g. Set the address setting switch as follows.
* To set the outdoor unit address to 100, the outdoor address setting switch must be set to 50.
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
3 Transmission booster
Max transmission cable length (M-NET cable): 1 L
•
• Remote controller cable length: r

10.4. Wiring of main power supply and equipment capacity

Schematic Drawing of Wiring (Example)
[Fig. 10.4.1] (P.5)
A Switch (Breakers for wiring and current leakage)
D Pull box
Code
OC
IC
RC
RP
C Group 5
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
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
10 m (0.3 to 1.25 mm
=
1 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
+c and c +c +c +c 200 m (0.3 to 1.25 mm
=
1 2 1 2 3 4
+L +L +L +L 200 m (1.25 mm
=
1 2 3 5 6
2 L
+L +L +L +L 200 m (1.25 mm
=
1 2 3 5 7
3 L
+L +L 200 m (1.25 mm
=
1 2 4
4 L +L +L +L , L +L
6 5 3 4 4 3
, r 10 m (0.3 to 1.25 mm 2 )
=
1 2
If the length exceeds 10 m, use 1.25 mm
length and the longest remote length.
B Breakers for current leakage
E Indoor unit
Possible unit connections
–
1 to 32 units per 1 OC (*1)
2 units maximum per group
0 to 1 unit per 1 OC (*1)
D Shielded wire
Setting Method
+L 500 m (1.25 mm 2 or more)
=
2 6
2
+L = 200 m (1.25 mm or more)
6
2
)
2 shielded wire. The length of this section (L
500 m (1.25 mm 2 or more)
=
6
+L 200 m (1.25 mm 2 or more)
=
2 6
2 )
2
)
2
)
2 )
+L +L 200 m (1.25 mm 2 )
=
5 7
2
shielded cable and calculate the length of that portion (L
E Sub remote controller
) should be included in the calculation of the
8
and L ) as within the total extended
4 7
C Outdoor unit
13