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TCH091
9-3. DESIGN FOR CONTROL WIRING
Please note that the types and numbers of control wires needed by the Power Multi series will depend on the remote
controllers and whether they are linked with the system.
9-3-1. Selection number of control wires
9-4. WIRING TRANSMISSION CABLES
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 wire (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
Types of remote control cables
Shielding wire (2-core) CVVS, CPEVS, or MVVS
Cable diameter
0.5 to 1.25 mm
2
Remarks
If the length exceeds 10 m, use a cable with the same specifications
as transmission line wiring.
3. MA Remote control cables
Type 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
M-IC
PUMY-P250 1 to 30 units per 1 OC
PUMY-P300
A-IC
PUMY-P250 2 to 12 units per 1 OC
PUMY-P300
Branch box
–
–
0 to 3 units per 1 OC
Remote controller
RC
M-NET RC
Maximum of 30 controllers for 1 OC
(Cannot be connected if a branch box is used.)
MA-RC
Maximum of 2 per group
9-5. SYSTEM SWITCH SETTING
In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the Power Multi 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.
Содержание PUMY-P250YBM2-BS
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