Mitsubishi Electric City Multi PMFY-P NBMU Serie Manual De Instalación página 11

5. Electrical work
1
B A
M1 M2 M1 M2
TB3 TB5
2
B
M1 M2
TB3 TB5
3
B
Pair No.
D
Pair No.
Fig. 5-3
A
SW5
220V 240V
(208V) (230V)
SW1
ON
OFF
1 2 3 4 5 6 7 8 9 10
SW12 SW11
(10ths DIGIT) (1s DIGIT)
Fig. 5-4
A
S 1 2 M1 M2 S 1 2
TB15 TB5 TB15
C C
A A
M1 M2 S M1 M2 S
TB5
C C
A
E
C
CN43
CN82
SWC SW14
. /
.
(BRANCH No.)
5.3. Connecting remote controller, indoor and
outdoor transmission cables (Fig. 5-3)
• 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, 33 ft using a
0.75 mm (AWG22) core cable. If the distance is more than 10 m, 33 ft, use a
2
1.25 mm (AWG16) junction cable.
2
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.
(Nonpolarized 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
controller 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 re-
mote controller. (In the default setting of indoor unit and wireless remote control-
ler, Pair No. is 0.)
Terminal block for indoor transmission cable
A
Terminal block for outdoor transmission cable(M1(A), M2(B),
B
Remote controller
C
Wireless signal receiver
D
Wireless remote controller
E
5.4. Types of control cables
1. Wiring transmission cables
Types of transmission cable Shielding wire CVVS or CPEVS
Cable diameter More than 1.25 mm
Length Less than 200m (656ft)
2. M-NET Remote control cables
Types of remote control cable Shielding wire MVVS
Cable diameter 0.5 (AWG 20) to 1.25 mm
Add any portion in excess of 10m (33ft) to
Length within the longest allowable transmission cable
length 200m (656ft)
3. MA Remote control cables
Types of remote control cable 2-core cable (unshielded)
Cable diameter 0.3 (AWG22) to 1.25 mm
Length Less than 200m (656ft)
5.5. Setting addresses (Fig. 5-4)
(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.
Address board
A
Note:
Please set the switch SW5 according to the power supply voltage.
• Set SW5 to 230V side when the power supply is 230V.
• When the power supply is 208V, set SW5 to 208V side.
5.6. Sensing room temperature with the built-in sensor
in a remote controller (Fig. 5-4)
If you want to sense room temperature with the built-in sensor in a remote
controller, set SW1-1 on the control board to "ON". The setting of SW1-7 and SW1-
8 as necessary also makes it possible to adjust the air flow at a time when the
heating thermometer is OFF.
(S))
2 (AWG16)
2 (AWG16)
2 (AWG16)
en
10