Mitsubishi Electric CITY MULTI PKFY-WL NKMU-E Series Installation Manual page 15

6. Electrical work
B A
1
M1 M2 M1 M2
TB3 TB5
B
2
M1 M2
TB3 TB5
3
Fig. 6-3
A
ON
OFF
1 2 3 4 5 6 7 8 9 10
SW12
Fig. 6-4
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
SWA CN43
CN82
SW1
SW11 SW14
0 0 0
ADDRESS
6.3. Types of control cables
1. Wiring transmission cables
Types of transmission cable Shielding wire
Use UL wire rated 300 V
Cable diameter More than 1.25 mm
Length Less than 200m, 219 yard
2. M-NET Remote control cables
Types of remote control cable Shielding wire
Use UL wire rated 300 V
Cable diameter More than 0.5 (AWG20) to 1.25 mm
Length Add any portion in excess of 10m, 33 ft to
within the longest allowable transmission cable
length 200m, 219 yard.
3. MA Remote control cables
Types of remote control cable
Cable diameter
Length
6.4. Connecting remote controller, indoor and
outdoor transmission cables (Fig. 6-3)
• 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
2
0.75 mm (AWG22) core cable. If the distance is more than 10 m, 33 ft, use a
1.25 mm 2 (AWG16) junction cable.
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
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 re-
mote controller. (In the default setting of indoor unit and wireless remote control-
ler, Pair No. is 0.)
A
Terminal block for indoor transmission cable
B
Terminal block for outdoor transmission cable(M1, M2,
C
Remote controller
D
Wireless signal receiver
E
Wireless remote controller
6.5. Setting addresses (Fig. 6-4)
(Be sure to operate with the main power turned OFF.)
• There are two types of rotary switch setting available: setting addresses 1 to 9
and over 10, and setting branch numbers.
1 How to set addresses
Example: If Address is "3", remain SW12 (for over 10) at "0", and match SW11
(for 1 to 9) with "3".
2 How to set branch numbers SW14 (Series R2 only)
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.
6.6. Sensing room temperature with the built-in
sensor in a remote controller
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.
2
(AWG16)
2
(AWG16)
2-core cable (unshielded)
Use UL wire rated 300 V
0.3 (AWG22) to 1.25 mm 2 (AWG16)
Less than 200m, 219 yard
)
13
en