York 21RT-47RT Installation, Operation And Maintenance Manual page 30

Water-cooled chiller
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3.5.4 Wiring description for wire controller
3.5.4.1 The connection between the wire controller and the unit is shown in the following figure
Note: One controller can only control one unit.
3.5.4.2 Wire controller's power supply and communication port:
JP4_1
RS485-B
Note:
1) A buzzer is arranged on the wire controller and it is used for prompting the effective operation.
2) The wire controller requires clock and battery.
Cooke Industries - Phone: +64 9 579 2185
Wire Controller
A
B
PB
+12V
1
1. Communication cables between host and wire controller
should be 85% net type shielded wire of four-core, which
length is within 15m.
JP4_2
RS485-A
27
Email: sales@cookeindustries.co.nz
Electrical connection
1# Module
A
B
+12V 0V
JP4_3
JP4_4
+12V
GND
Web: www.cookeindustries.co.nz

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