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19
10.1 Field Minimum Wire Sizes for Power Souce
Units Power supply
Power supply
wiring size
Communica
tion Cable
Size
Fan motor
Model Hz Volts
Voltage
range
MCA MOP kW FLA
60
208/
230V
Max.253V
Min.187V
0.45
Wiring size
and length
must
comply with
local codes.
AWG18
*1
(0.82mm
2
)
0.0
25
0.11
CHV-07WTU
0.
56
0.035
0.16
CHV-15WTU
1.02
0.035
0.15
CHV-18WTU
NOTES:
MCA: Min. Circuit Amps (A); MOP: Max. Overcurrent Protective Device (A)
kW: Fan Motor Rated Output (kW); FLA: Full Load Amps (A)
(1) Use a shielded cable for the transmitting circuit and connect it to ground.
(2) Field wiring shall be in conformity to local laws and regulations, and all wiring operations must be performed
qualified professionals.
(3) Once the power cord is damaged, the dealer or the professionals from designated maintenance departmen
must be contacted in a timely manner for repair and replacement.
15
DSW3
DSW6
DSW4
DSW5
DSW7
10.2 Setting of Dip Switches
(1)1) DIP switch must be set with power sources of
indoor and outdoor units in OFF state. Otherwise,
the settings are invalid.
(2)2) The DIP switches are located as shown in
figure below.
(3) 5 dip switches are arranged on the PCB of indoor
unit, and must be set based on the following
instructions before test run. The system shall not
be started before the completion of dip switch
setup.
(a) Address of indoor units (DSW6): All indoor
units must be numbered in sequence based on
the diagram below. Outdoor units must be
numbered from "0".
Setting
Method
DSW6 (Setting 0~63)
Ex.) Set address No.16
ON
OFF
Note: 8421 coding method
DSW6
ON
OFF
No.5 isON
1 234
56
1
23456
(b) Refrigeration system cycle No. ( DSW5)
is required to be set. All are set to OFF
before shipment.
0.0
25
0.11
0.0
25
0.11
0.035
0.15
0.035
0.15
CHV-09WTU
CHV-12WTU
CHV-24WTU
CHV-28WTU
0.45
0.53
0.
56
0.94
Setting
Method
DSW5 (Setting 0~63)
Ex.) Set address No.16
ON
OFF
Note: 8421 coding method
DSW5
ON
OFF
No.5 isON
1 234
56
1
23456
2
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