Mitsubishi PUMY-P100YHM Technical & Service Manual page 75

10-3. DESIGN FOR CONTROL WIRING
Please note that the types and numbers of control wires needed by the CITY MULTI-S series will depend on the remote
controllers and whether they are linked with the system.
10-3-1. Selection number of control wires
Use
Remote controller → indoor unit
Wires connecting → indoor units
Wires connecting → indoor units with outdoor unit
Wires connecting → outdoor units
10-3-2. Control signal wires
Transmission wires
• Types of transmission cables : Shielding wire CVVS or CPEVS.
• Cable diameter : More than 1.25E
• Maximum wiring length : Within 200 m
10-3-3. M-NET Remote controller wiring
Kind of remote control cable
Cable diameter
Remarks
10-3-4. MA Remote control cables
Kind of remote control cable
Cable diameter
10-4. SYSTEM SWITCH SETTING
In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the MULTI-S
series, each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor
units, and remote controller must be set using their settings switches. Please consult the installation manual that comes with
each unit for detailed information on setting procedures.
10-5. EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM
10-5-1. Example using a M-NET remote controller
Breaker for Wiring
and Current Leakage
Power supply
3 phase 4 wire.
50Hz 380-400-415V
15A Breaker for Wiring
and Current Leakage
Power supply
Single phase.
50Hz 220-230-240V
1.6mm × 2
Shielding wire MVVS
0.5 to 1.25E
When 10m is exceeded, use cable with the same
specifications as 10-3-2. Control signal wires.
2-core cable (unshielded)
0.3 to 1.25
Outdoor
unit
Pull box
1.25mm 2 × 2
1.6mm × 2
Indoor unit
0.5~1.25mm 2 × 2
M-NET remote controller
Remote controller used in system control operations.
• Group operation involving different refrigerant systems.
• Linked operation with upper control system.
2 wires (non-polar)
Grounded
75
Group operation
Remote controller wire