P5417025-rev.1
23
4
2
3
1
4
2
3
1
4
2
3
1
3
ON
5 6
4
1 2
1
ON
3 4
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
3
ON
5 6
4
1 2
1
ON
3 4
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
PCN2
PCN1
LED2
LED1
LED4 LED5 LED6 LED7
LED3
DSW3
DSW2
DSW1
TP
CN11
DSW8
DSW7
DSW6
DSW5
DSW4
CN9 CN10
CN8
CN7
CN6
CN5
CN4
CN12
LED17
LED16
LED15
LED14
LED13
LED12
LED11
LED10
CN1
CN2
CN3
PCN2
PCN1
LED2
LED1
LED4 LED5 LED6 LED7
LED3
DSW3
DSW2
DSW1
TP
CN11
DSW8
DSW7
DSW6
DSW5
DSW4
CN9 CN10
CN8
CN7
CN6
CN5
CN4
CN12
LED17
LED16
LED15
LED14
LED13
LED12
LED11
LED10
CN1
CN2
CN3
3
ON
5 6
4
1 2
1
ON
3 4
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
1
ON
2
PCN2
PCN1
LED2
LED1
LED4 LED5 LED6 LED7
LED3
DSW3
DSW2
DSW1
TP
CN11
DSW8
DSW7
DSW6
DSW5
DSW4
CN9 CN10
CN8
CN7
CN6
CN5
CN4
CN12
LED17
LED16
LED15
LED14
LED13
LED12
LED11
LED10
CN1
CN2
CN3
Control Wiring Connection
(3 x
φ
26mm [1 inch])
Power Supply Wiring Connection
(
φ
26mm [1 inch])
Cable Clamp
Cable Clamp
Clamp
(Accessory (7))
Communication Cable
Communication cable between
the outdoor unit and CH-Box.
Cable Clamp
Clamp
(Accessory (7))
Cable Clamp
Clamp
(Accessory (7))
Terminal Block
for Power Supply
Ground Terminal
Terminal Blocks for Communication
between CH-Box and Indoor Unit
Wire Clip
(Use to
route wiring)
D
C
B
A
H
G
F
E
L
K
J
I
TB1
PCB3
PCB2
PCB1
TB2
TB3 TB4
TB3 TB4
TB3 TB4
Figure 6.1 Electrical Wiring Connection
6.3 Electrical Wiring
The electrical wiring connection for the CH-Box is shown in Figure 6.1.
(1) Turn OFF the main power switch and take off the electrical box cover of CH-Box.
(2) Connect the power supply wiring to L1 and L2 on the terminal block TB1, and connect ground wiring to
the terminals in the electrical box.
(3) Connect the communication cable between the outdoor unit and CH-Box to TB2 of the CH-Box.
Connect the communication cable between the CH-Box and indoor unit to TB3 and TB4 of the
CH-Box.
Ensure that the communication cable between the CH-Box and indoor unit is connected to the same
letter as piping connection. (Tightening Torque: 1.0 to 1.3 N
.
m (0.7 to 1.0 ft
.
lbs))
Refer to “Example of Electrical Wiring” for the wiring connection.
(4) Tightly clamp the wires using the cable clamp inside the electrical box.
(5) Make sure the communication cables outside the electrical box does not touch sharp edges by
securing with clamp (accessory (7)).
(6) Attach the electrical box cover after completing the wiring work.
NOTE:
The accessory numbers are listed in Table 4.1.
Above figure illustrate the example of CH-AP12MSSX.
Number of PCBs are different depending on model number.
Refer to the following table.
PCB1
PCB2
PCB3
PCB4
CH-AP06MSSX
CH-AP08MSSX
CH-AP12MSSX
CH-AP16MSSX
Screw Size
Tightening Torque
TB1
Terminal Block for Power Supply Cable
M4
1.0 ~ 1.3 N.m
TB2
Terminal Block for Communication Cable
M3.5
0.7 ~ 0.9 N.m
TB3, TB4
Terminal Block for Communication Cable
M4
1.0 ~ 1.3 N.m
Summary of Contents for CH-AP04MSSX
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