Design For Control Wiring; Wiring Transmission Cables; Selection Number Of Control Wires; Types Of Control Cables - Mitsubishi Electric PUMY-P112VKM1 Service Manual

9-3. DESIGN FOR CONTROL WIRING

Please note that the types and numbers of control wires needed by the CITY MULTI-S series depend on the remote
controllers and whether they are linked with the system or not.

9-3-1. Selection number of control wires

Remote controller → indoor unit
Wires connecting → indoor units
Wires connecting → indoor units with outdoor unit
Wires connecting → outdoor units

9-4. WIRING TRANSMISSION CABLES

9-4-1. Types of control cables

1. Wiring transmission cables
• Types of transmission cables: Shielding wire CVVS, CPEVS or MVVS
• Cable diameter: More than 1.25 mm
• Maximum wiring length: Within 200 m
2. M-NET Remote control cables
Kind of remote control cable
Cable diameter
Remarks
3. MA Remote control cables
Kind of remote control cable
Cable diameter
Remarks
* Connected with simple remote controller.
9-4-2. Wiring examples
•
Controller name, symbol and allowable number of controllers.
Name
Outdoor unit controller
Indoor unit controller
Branch box
Remote controller
Note that the number of connectable units may be limited by some conditions such as an indoor unit's capacity or each unit's equivalent power consumption.
(Refer to DATA BOOK.)
OCH576
Use
2
Shielding wire (2-core) CVVS, CPEVS or MVVS
More than 1.25 mm 2
When 10 m is exceeded, use a cable with the same specifications
as transmission line wiring.
Sheathed 2-core cable (unshielded) CVV
2
0.3 to 1.25 mm (0.75 to 1.25 mm
Within 200 m
Symbol
OC
PUMY-P112
M-IC PUMY-P125
PUMY-P140
PUMY-P112
A-IC PUMY-P125
PUMY-P140
― ―
M-NET RC
RC
MA-RC
M-NET remote controller
Remote controller used in system control operations.
• Group operation involving different refrigerant systems.
• Linked operation with upper control system.
2-core wire (non-polar)
2 )*
Allowable number of controllers
―
1 to 9 units per 1 OC
1 to 10 units per 1 OC
1 to 12 units per 1 OC
1 to 8 units per 1 OC
0 to 2 units per 1 OC
Maximum of 12 controllers for 1 OC
(Can not be connected if Branch box is used.)
Maximum of 2 per group
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