Wiring Transmission Cables - Mitsubishi Electric City Multi Y Série Manuel D'installation

4 Transmission booster (optional)
(For details, see item 11.3. "Wiring transmission cables")
Connect 220/230/240 VAC to L/N of power terminal block (TB1).
Connect the ground to the terminal of power terminal block (TB1).
Connect the outdoor unit side transmission cables to A/B of transmission cables terminal block 1 (TB2).
Connect the outdoor unit side shield to S of transmission cables terminal block 1 (TB2).
Connect additional indoor unit side transmission cables to A/B of transmission cables terminal block 2 (TB3).
Connect additional indoor unit side shield to S of transmission cables terminal block 2 (TB3).
Power terminal Power terminal Power terminal
block (TB1) block (TB1)
block (TB1)
and Earth and Earth
and Earth

11.3. Wiring transmission cables

Wiring method, address setting method and permissible wiring length differ according to and whether or not you are using transmission booster. Check
permissible wiring length before wiring.
A may be required depending on the number of indoor units.
Item 4 "Wiring examples" gives typical wiring examples (A – C).
A. System using remote controller (1 outdoor unit)
B. System using remote controller (system operated as a group among multiple refrigerant systems)
C. System using power supply extension unit for transmission booster (combination of systems a – b)
1 Connecting a transmission booster
A transmission booster (RP) is required when the number of connected indoor unit models in a cooling system exceeds the number of models specified
in the chart below.
* The maximum number of units that can be controlled is determined by the indoor unit model, the type of remote controller and their capabilities.
(*1)
Capability of the
connected indoor units
*1 If even one unit that is higher than 200 exists in the cooling system, the maximum capacity will be "200 or higher".
2 Name, code and possible unit connections
Name
Outdoor unit Outdoor unit controller
Indoor unit Indoor unit controller
Remote controller Remote controller (*1)
Other Transmission booster unit
*1 A transmission booster (RP) may be required depending on the number of connected indoor unit controllers.
3 Types of control cables
(1) Wiring transmission cables
• Types of transmission cables
Shielding wire CVVS or CPEVS
• Cable diameter
More than 1.25 mm 2
• Maximum wiring length within 200 m
(2) Remote control cables
Kind of remote control cable
Cable diameter
Remarks
4 Wiring examples
Typical wiring examples are shown on pages 26 to 30 (Wiring examples A – C).
TRANSMISSION BOOSTER
MODEL PAC-SF46EPA
POWER RATING 220-240V:0.7A ~/N
50
WEIGHT 3.4kg
MADE IN JAPAN
Remote controller type
Number of connected indoor units that can be
connected without a RP.
200 or lower
200 or higher
The number of indoor units and the total number of remote controllers is displayed within the parenthesis ( ).
Code
OC
IC
RC
RP
2-core cable (unshielded)
0.5 to 0.75 mm 2
When 10 m is exceeded, use cable with the same
specifications as (1) Transmission line wiring.
UP
Prior to Ver. E
Possible unit connections
–
2 to 32 units per 1 OC (*1)
2 units maximum per group
0 to 1 unit per 1 OC (*1)
Transmission cables
Transmission cables Transmission cables
terminal block 2 (TB3)
terminal block 2 (TB3) terminal block 2 (TB3)
Transmission cables
Transmission cables Transmission cables
terminal block 1 (TB2)
terminal block 1 (TB2) terminal block 1 (TB2)
Remote controller PAR-F 25MA
After Ver. F
16 (32) 20 (40)
16 (32) 16 (32)
25