118
OCH634C
9-3. DESIGN FOR CONTROL WIRING
Please note that the types and numbers of control wires needed by the MULTI-S series will depend on the remote con-
trollers and whether they are linked with the system.
9-3-1. Selection number of control wires
M-NET remote controller
Use
Remote controller used in system control operations.
• Group operation involving different refrigerant systems.
• Linked operation with upper control system.
Remote controller → indoor unit
2-core wires (non-polar)
Transmission wires
Wires connecting → indoor units
Wires connecting → indoor units with outdoor unit
Wires connecting → outdoor units
9-4-1. Types of control cables
1. Wiring transmission cables
Types of transmission cables Shielding wire (2-core) CVVS, CPEVS or MVVS
Cable diameter
More than 1.25 mm
2
Maximum wiring length
Within 200 m
2. M-NET Remote control cables
Kind of remote control cable
Shielding wire (2-core) CVVS, CPEVS, or MVVS
Cable diameter
0.5 to 1.25 mm
2
Remarks
When 10 m is exceeded, use a cable with the same specifications
as transmission line wiring.
3. MA Remote control cables
Kind of remote control cable
Sheathed 2-core cable (unshielded) CVV
Cable diameter
0.3 to 1.25 mm
2
(0.75 to 1.25 mm
2
)*
Remarks
Within 200 m
* Connected with simple remote controller.
9-4-2. Wiring examples
•
Controller name, symbol and allowable number of controllers.
Name
Symbol
Allowable number of controllers
Outdoor unit controller
OC
–
Indoor unit controller
IC
PUMY-P200
1 to 12 units per 1 OC
Remote controller
RC
RC
(M-NET)
Maximum of 12 controllers for 1 OC
MA
Maximum of 2 per group
9-4. WIRING TRANSMISSION CABLES
