7
6. Electrical work
Constraints on transmission cable (Fig. 6-3)
Longest wiring length (L
1
+L
2
+L
4
or L
1
+L
3
or L
2
+L
3
+L
4
): less than 200 m
Length between indoor unit and remote controller (
R
): within 10 m
G
Outdoor unit
H
Earth
I
BC controller
J
Indoor unit
K
M-NET Remote controller
L
Non-polarized 2-wire
Note:
*1 Put the transmission cable earth via the outdoor unit’s earth terminal
to
the ground.
*2 If the remote controller cable exceeds 10 m, use a 1.25 mm
2
diameter cable
over the exceeded portion, and add that exceeded portion to within 200 m.
*3 The BC controller is required only for simultaneous cooling and heating
series R2.
6.3. 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.
Note:
Please set the switch SW5 according to the power supply voltage.
• Set SW5 to 240 V side when the power supply is 230 and 240 volts.
• When the power supply is 220 volts, set SW5 to 220 V side.
A
Address board
6.4. Types of control cables
1. Wiring transmission cables: Shielding wire CVVS or CPEVS
• Cable diameter: More than 1.25 mm
2
2. M-NET Remote control cables
Kind of remote control cable Shielding wire MVVS
Cable diameter
More than 0.5 to 1.25 mm
2
Remarks
When 10 m is exceeded, use cable with the same
specifications as transmission line wiring.
3. MA Remote control cables
Kind of remote control cable 2-core cable (unshielded)
Cable diameter
0.3 to 1.25 mm
2
Fig. 6-3
A
Fig. 6-4
G
I
J
J
J
K
K
K
K
J
J
L
K
H
*1
*3
L1
L2
L4
r
L3
*2
SW14
0
SW11
0
SW12
0
1 2 3 4 5 6 7 8 9 10
ON
OFF
SW1
SW5
220V
240V
SWC
CN82
CN43
Содержание PKFY-P VFM-E
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