Mitsubishi Electric CITY MULTI PLFY-M-VEM Series Installation Manual page 11

5. Electrical work
5.3. Types of control cables
1. Wiring transmission cables
Types of transmission cable Shielding wire CVVS or CPEVS
Cable diameter More than 1.25 mm²
Length Less than 200 m
2. M-NET Remote control cables
Types of remote control cable Shielding wire MVVS
Cable diameter 0.5 to 1.25 mm²
Add any portion in excess of 10 m to within the
Length
longest allowable transmission cable length 200 m
1 B A
M1 M2 M1 M2 S 1 2
TB3 TB5
B A
2
M1 M2 M1 M2
TB3 TB5
C
3
B
Pair No.
D
Pair No.
Fig. 5-5
A BRANCH 10s 1s
SW21
No. DIGIT DIGIT
ON
OFF
1 6
SW14 SW12 SW11
Fig. 5-6
A
M1 M2 S 1 2
TB15 TB5 TB15
C C
A
S M1 M2 S
TB5
C
A
E
SW22 SW1 SW2 SW3
ON
OFF
1 4 1 0 1 6 1 0
3. MA Remote control cables
Types of remote control cable 2-core cable (unshielded)
Cable diameter 0.3 to 1.25 mm²
Length Less than 200 m
5.4. Connecting remote controller, indoor and outdoor
transmission cables (Fig. 5-5)
• Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-wire)
The "S" on indoor unit TB5 is a shielding wire connection. For specifications about
the connecting cables, refer to the outdoor unit installation manual.
• Install a remote controller following the manual supplied with the remote controller.
• Connect the remote controller's transmission cable within 10 m using a 0.75 mm
core cable. If the distance is more than 10 m, use a 1.25 mm
1 MA Remote controller
• Connect the "1" and "2" on indoor unit TB15 to a MA remote controller. (Non-polarized
2-wire)
• DC 9 to 13 V between 1 and 2 (MA remote controller)
2 M-NET Remote controller
• Connect the "M1" and "M2" on indoor unit TB5 to a M-NET remote controller. (Non-
polarized 2-wire)
• DC 24 to 30 V between M1 and M2 (M-NET remote controller)
3 Wireless remote controller (When installing wireless signal receiver)
• Connect the wire of wireless signal receiver (9-pole cable) to CN90 of indoor con-
troller board.
• When more than two units are run under group control using wireless remote
controller, connect TB15 each with the same number.
• To change Pair No. setting, refer to installation manual attached to wireless remote
controller. (In initial setting of indoor unit and wireless remote controller, Pair No.
is 0.)
A Terminal block for indoor transmission cable
B Terminal block for outdoor transmission cable (M1(A), M2(B),
C Remote controller
D wireless signal receiver
E wireless remote controller
5.5. Setting addresses (Fig. 5-6)
(Be sure to operate with the main power turned OFF.)
• There are 2 types of rotary switch setting available: setting addresses 1 to 9 and
over 10, and setting branch numbers.
How to set addresses
1
Example: If Address is "3", remain SW12 (for over 10) at "0", and match SW11
(for 1 to 9) with "3".
How to set branch numbers SW14 (Series R2 only)
2
Match the indoor unit's refrigerant pipe with the BC controller's end connection
number.
Remain other than series R2 at "0".
• The rotary switches are all set to "0" when shipped from the factory. These switches
can be used to set unit addresses and branch numbers at will.
• The determination of indoor unit addresses varies with the system at site. Set them
referring to the Data Book.
Controller board
A
• Rotary switches (SW11, SW12 and SW14) in the picture show "0".
2
junction cable.
2
(S))
en
9