LG PRDSBM Installation Instruction

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1. Check the contents of Outdoor Dry Contact(PRDSBM).
2. Connect Outdoor Main PCB and Outdoor Dry Contact
3. Outdoor dry contact combines with switch box as shown below
4. Attach the front case
①②
GND
GND
①②
GND
Switch Box
< Outdoor Main PCB >
- Insert wire method -
shows field wiring
connected wiring
Push arrow direction.
Insert wire to connector.
- Connect terminals(
①, ②, GND) on the back side of the outdoor dry contact to terminals (①, ②, GND) of 
outdoor as show below.
Push Button
Outdoor Dry Contact (PRDSBM) Installation Manual
P/No.: 3828A20561T
<Outdoor Dry Contact Back Side >
GND
GND
GND
1
2
3
4
1
2
3
4
CAUTION
Pay attention to the wiring when the Push Button on the back side of Outdoor Dry Contact 
is pressed and the wires are pulled out.
❈ Communication line length can be maximum 300m, use communication line as thick as 1.25mm
2
.
<Front Case>
<Outdoor Dry Contact Main Body>