95
ENGLISH
9.7.5 Connection for cascade system
Power supply
Please use the shielded wire, and the shield layer must be grounded.
Distribution box Distribution box
On/Off switch
Fuse
Distribution box Distribution box
Slave unit 1
H2H1
Slave unit 2
H2H1
Slave unit x
H2H1
Build-out resistor
Only the last IDU
requires adding the
build-out resistor at
H1 and H2.
......
L1 L2 L3 N
Fuse
L1 L2 L3 N
Fuse
L1 L2 L3 N
Fuse
L1 L2 L3 N
b
ATTENTION
1) The cascade function of the system only supports 6 machines at most.
2) In order to ensure the success of automatic addressing, all machines must be connected to the same power supply and powered on uniformly.
3) Only the Master unit can connect the controller, and you must put the SW9 to “on” of the master unit, the slave unit cannot connect the con-
troller .
4) Please use the shielded wire, and the shield layer must be grounded.
9.7.6 Connection for other components
1
SL1
2
SL2
3
H
4
C
5
6
1ON
7
1OFF
8
910
11
12
2423
N
21
N
20
IBH1
19
18
13 14
L1
15
16
17
N
22
25
HT
29
30
31
DFT2
32
DFT1
26
R2
27
AHS1
28
AHS2
1
A
2
B
3
X
4
Y
5
E
6
P
7
Q
8
E
9
H1
10
H2
2ON
2OFF
P_c P_o
P_s
P_d
N
R1
TBH
N
N
3ON
3OFF
NN
CN11 CN7 CN30
CN11
CODE PRINT CONNECT TO
1
1SL1
Solar energy input
signal
2SL2
2
3HL
Room thermostat input
(high voltage)
4CL
15 L1
3
51ON
SV1 (3-way valve)6 1OFF
16 N
4
72ON
SV2 (3-way valve)8 2OFF
17 N
5
9 PUMP_C
Pumpc (zone2 pump)
21 N
6
10 PUMP_O Outside circulation pump
]RQHSXPS
22 N
7
11 P S
Solar energy pump
23 N
8
12 P D
DHW pipe pump
24 N
9
13 TBH
Tank booster heater
16 N
10
14 IBH1
Internal backup heater 1
17 N
11
18 N
SV3 (3-way valve)19 3ON
20 3OFF
CN30
CODE PRINT CONNECT TO
1
1A
Wired controller
2B
3X
4Y
5E
2
6P
Outdoor unit
7Q
3
9H1
Cascade connected heat pump
10 H2
CN7
CODE PRINT CONNECT TO
1
26 R2
Compressor run
30 R1
31 DFT2
Defrost run
32 DFT1
2
25 HT
Antifreeze E-heating
tape (external)
29 N
3
27 AHS1
Additional heat source
28 AHS2
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