LG MULTI V Installation Manual page 105

2.1 Demand Control
ODU Dry contact has provided Two different methods for Demand control
- Using Contact signal
: High/ Low pressure value s are changed by setting value of Rotary S/W
- Using Analog signal with DDC Module
: High/ Low pressure value s are changed by setting value of DDC Module.(DC 0~10V)
[Rotary S/W setting ]
SW_STEP
0, 1, 2, 3, 4, 5, 6
D, E
[Setting ]
SW_STEP
- Each connecting methods
1. Using Contact signal
<Without External power source>
SW_VOLT2 SW_VOLT1
Notes
Do not input the voltage signal in
"NON VOLT" setting mode otherwise
it will cause serious damage
Input Signal
Contact signal
Analog signal
Using Contact signal
Using Analog signal with DDC Module
<With External power source>
SW_VOLT2 SW_VOLT1
LG does not
supply this section
(Field supply)
New Function
LG does not
Connect separate
supply this section
External voltage of
DC12V
(Field supply)
Installation Manual 105