Mitsubishi Electric CITY MULTI PUMY-P200YKM2R2 Technical & Service Manual page 120

9-3. DESIGN FOR CONTROL WIRING
Please note that the types and numbers of control wires needed by CITY MULTI series will depend on the remote con-
trollers and whether they are linked with the system.
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
Cable diameter
Maximum wiring length
2. M-NET Remote control cables
Types of remote control cables Shielding wire (2-core) CVVS, CPEVS, or MVVS
Cable diameter
Remarks
3. MA Remote control cables
Type 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
CITY MULTI
series
Indoor unit
controller
M, S, P
series
Branch box
M-NET
Remote
controller MA
Wireless
Note:
*1. 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.
*2. Don't use the Lossnay controller (PZ-61DR-E, PZ-43SMF-E, PZ-52SF-E, PZ-60DR-E).
OCH675E
Use
Shielding wire (2-core) CVVS, CPEVS or MVVS
More than 1.25 mm
2
Within 200 m
0.5 to 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
M-IC
A-IC
BC
M-NET RC * 2
(Cannot be connected if the branch box is used.) *
MA-RC
WL-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 wires (non-polar)
)*
2
Allowable number of controllers
―
1 to 12 units per 1 OC *
2 to 8 units per 1 OC *
0 to 2 units per 1 OC
Maximum of 12 controllers for 1 OC
Maximum of 2 per group
―
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