Mitsubishi Heavy Industries FDCW60VNX-W, Installation Manual

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29
Electrical installation
Connection between indoor unit and controller
See Connection for RC-HY20/40
Cascade connection setting
In case of cascade connection system, it is necessary to allot
unique address to each indoor unit. Set the dip switch S3-1, -2
and -3 according to the following table.
Address S3:1 S3:2 S3:3
1 OFF OFF OFF
2 On OFF OFF
3 OFF On OFF
4 On On OFF
5 OFF OFF On
6 On OFF On
7 OFF On On
8 On On On
Recommended fuse size for HSB60
The recommended fuse size shown in the following table is
reference value. Choose appropriate size according to local
laws and regulations.
Fuse size
Indoor unit (HSB60) 6A / 230V 1AC 50Hz
Outdoor unit (FDCW60VNX) 20A / 230V 1AC 50Hz
Controller (RC-HY20/40) 10A/ 230V 1AC 50Hz
Electric heater (ELK9M)
(reference)
16 A/400V 3NAC 50Hz
Recommended cable size for HSB60
The recommended cable size shown in the following table is
reference value. Choose appropriate size according to local
laws and regulations.
Cable size
Power – Indoor unit 3core, 1.5mm
2
(power cable)
Power – Outdoor unit 3core, 2.0mm
2
(power cable)
Indoor unit – Outdoor unit
2core, 1.5mm
2
(communication cable)
Indoor unit – Controller
3core, 0.5mm
2
, LiYY, EKKX or
equivalent (communication cable)
Connect power cable on X1 terminal as shown below.
RC-HY 20/40 must be installed via an isolator switch with a
minimum breaking gap of 3 mm. Minimum cable area must be
sized according to the fuse rating used.
N L
X1
RC-HY20/40 X1
Signal cable is connected between controller and indoor unit
with screened 3 core cable for HSB60. Choose correct terminal
according to the type of controller as shown below.
<HSB60 with RC-HY20>
Connect the port 19(A), 20(B) and 21(GND) on X2 terminal
on RC-HY20 to the port 1, 2 and 3 on X4 terminal on AA23
board on HSB60 respectively.
6
5
4
3
2
1
A
B
GND
SMO
A
B
GND
A
B
GND
19
20
21
18
X2
RC-HY20
AA23-X4
HSB60
RC-HY20
X2
<HSB60 with RC-HY40>
Connect the port 1(A), 2(B) and 3(GND) on X4 terminal on
AA5 board on RC-HY40 to the port 1, 2 and 3 on X4 terminal
on AA23 board on HSB60 respectively.
In case several systems are connected to one controller, connect
the port 4, 5 and 6 on X4 terminal on AA23 board on HSB60
close to the controller to the port 1, 2 and 3 on X4 terminal on
AA23 board on another HSB60.
1 2 3
A D N G B
4 5
SMO
6
5
4
3
2
1
A
B
GND
A
B
GND
6
5
4
3
2
1
A
B
GND
A
B
GND
HSB60 HSB60
AA5-X4
AA5-X4
AA23-X4
AA23-X4
RC-HY40
ON
1 2 3 4 5 6 7 8
-X9
-X2
24
20
21
22
23
15
16
17
18
19
10
11
12
13
14
5
6
7
8
9
1
1 E P E P L N
1 2 3 4 5
2
1 2
3 4 5 6 7 8 9
2
3
4
-X8
-X4
-X10
-X1
RC-HY40