5. Wiring Diagrams
5.1 CTA-18HVR4, CTA-24HVR4
The power (HP) of indoor units can be set
throughDIP switch SW1(16- bit disc DIP ) on the
indoor control panel before delivery, the detailed
information is as follows:
FACTORY DEFAULT
NOTE:Around the ring 5 ring
NOTE:Around the ring 5 ring
BL
BR
Ring user selection
105
8
36K
4.0
1. Without the pump type water level switch output cables short circuit.
Connect to the outdoor
compensation
Reserved
Reserved
Reserved
2¡ æ
6¡ æ
SW2 NO.7
SW2 NO.6
SW2 NO.8
ON
OFF
7
8
ON
OFF
ON
OFF
8
7
OFF
ON
6
ON
OFF
ON
OFF
6
Reserved
Reserved
Reserved
F
E
5.5
52K
150 160
C
55K
6.0
180
D
60K
6.5
B
140
A
48K
5.0
9
42K
125
4.5
O UT P OW E R
HEA TER
CN4
SW2 NO.3
Floor&Ceiling Unit
Heating temperature
power-down memory
No power-down memory
Low static pressure duct unit
Indoor models
Standard static pressure duct unit
Receive and display light board
Indoor models Select bits
FAN SPEED CHOICE
Digital tube
High speed
Normal speed
FAN SPEED
LED
SW2 NO.1,2
SW2
NO.4
ON
4
4
ON
OFF
OFF
5
5
ON
OFF
ON
OFF
3
3
ON
OFF
ON
OFF
Reserved
2
2
2
2
NO.5
SW2
1
ON
ON
O FF
ON
O FF
ON
O FF
1
1
O FF
1
P UMP
CN2
CN3
N
CN10
L
That DIP to ON
ON
OFF
That DIP to Digital
W i r e control
CN27
S
Line pres si ng buttons
COMMUNICATION
87
S W2
CN11
CN37
S
CN26
R EM O_CT RL
CN17
T 2B
T2
T1
43 65
SW2
L1
N1
21
D u ct di splay
CN23
NOTE:
ON
OFF
OFF
ON
1
1
PUMP
HP
SW1
POWER
MODEL
12K
35
1.5
30K
3.5
7
9080
6
27K
3.0
53
4
18K
2.0
5
24K
70
2.5
3
26
2
9K
1.0
1
7K
21
0.8Reserved
Reserved
0
Reserved
NOTE:
CN11
BK
S
OUT POWER
CN37
REMO_CTRL
HEATER
CN10
YE/GN
PUMP
CN2
CN3
N
L
CN4
ON
OFF
1
N1
BL
CN26
BR
L1
8765432
SW2
SW1
F
1
0
S
CN27
5
Controller
Wire c ontrol
CN17
T2B
PT3
PT2
PT1
T2T1
L EFT FAN CN7
5
FAN
DC
Water-SW
SWITCH
WAT ER
CN18
Receive and display light board
RIGHT FAN CN8
Duct display
CN23
10
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