26
Pre-Start-up
Unit settings
Before starting or debugging of the water chiller, please configure the functional parameters and
operation parameters of the water chiller as per the following methods firstly. Function setting
of the water chiller is mainly conducted through jumper, dial switch and system bit. Incorrect
settings will result in misoperation of water chiller and even not running.
Jumper settings
Jumper JP1 is used for control in software version, and software download can be conducted
with the JP1 removed; if short circuit is made to JP1, the system will operate normally.
Dial switch settings
Dial switch SW1 is used for encoding the centralized control address bit, and it is used for setting
the address of each water chiller in networking control. Dial switch SW2 is used for definition of
the water chiller's main functions, each bit definition of which is in the following table, wherein,
Bit3 and Bit4 are only valid for the water chiller with double compressors.
Mode:
00 Normal operation mode
01 Computer supervision mode
10 System self-checking and configuration mode
11 On-site commissioning mode
C/H:
0 "external refrigeration/heating switch" invalid
1 "external refrigeration/heating switch" valid
Fan:
0 single fan
1 double fans
Type:
00 heat pump + electric heating
01 single refrigeration electric heating
10 single refrigeration electric heating
11 single refrigeration method
EnSave:
0 routine
1 two-way valve interlock
Control:
0 single machine control
1 module control
Bit1
Bit2
Bit3
Bit4
Bit5
Bit6
Bit7
Bit8
Mode
C/H
Fan
type
EnSave
Control
CGAR0305
0
5
10
15
20
25
30
35
1.07
1.25
1.43
1.61
1.79
1.97
2.15
2.33
2.51
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
W
at
er
P
re
ss
u
re
D
rop
(
m
H
2
O
)
CGAR0306
0
5
10
15
20
25
30
35
1.146 1.337 1.528 1.719 1.91 2.101 2.292 2.483 2.674
CGAR0505
0
5
10
15
20
25
30
1.344
1.568
1.792
2.016
2.24
2.464
2.688
2.912
3.136
CGAR0605
0
5
10
15
20
25
30
1.68
1.96
2.24
2.52
2.8
3.08
3.36
3.64
CGAR0606
0
5
10
15
20
25
30
2.292
2.674
3.056
3.438
3.82
4.202
4.584
4.966
5.348
CGAR0755
0
5
10
15
20
25
30
2.31
2.70
3.08
3.47
3.85
4.24
4.62
5.01
5.39
CGAR1005
0
5
10
15
20
25
30
2.74
3.19
3.65
4.10
4.56
5.02
5.47
5.93
CGAR1205
0
5
10
15
20
25
30
35
4.03
4.70
5.37
6.04
6.71
7.38
8.05
CGAR1505
0
5
10
15
20
25
30
35
4.76
5.56
6.35
7.15
7.94
8.73
9.53
Water Flow
：
m
3
/h
CGAR2005
5
10
15
20
25
30
35
40
45
50
55
5.47
6.38
7.29
8.20
9.11
10.02
10.93
11.84
Water Flow
：
m
3
/h
Water Flow
：
m
3
/h
Water Flow
：
m
3
/h
Water Flow
：
m
3
/h
Water Flow
：
m
3
/h
Water Flow
：
m
3
/h
Water Flow
：
m
3
/h
Water Flow
：
m
3
/h
Water Flow
：
m
3
/h
Pump Head
Internal Pressure Drop
Allowable External Pressure Drop
