LG MULTI V WATER MINI Engineering Manual page 51

Table of Contents

Installation

1. Shut off the main power to the water source unit.

2. Install the Variable Water Flow Control (PRVC1) PCB in the control box by using the included screws.

3. Install the transformer in the control box by using the included screws.

4. Install the terminal block in the control box by using the included screws.

5. Connect the Main PCB (CN41) to the PRVC1 (CN_OUT) by using the cable assembly.

6. Connect the blue wire of transformer to the Main PCB (JIG1[L], JIG2[N]).

7. Connect the red wire of transformer to the terminal block (two-pin, yellow terminal block).

8. Connect a power cable (DC 12V) to CN_PWR (12V, GND) of the PRVC1.

9. Connect a signal cable (DC 0~10V) of the water flow control valve to CN_AO (AO_01[A+], GND[A-]) of the PRVC1.

10. Case of two water flow control valve, Connect a signal cable (DC 0~10V) of water flow control valve to CN_AO (AO_02[B+], GND[B-]) of

PRVC1.

11. Connect a power cable (AC 24V) of the water flow control valve to the terminal block (two-pin, yellow terminal block, max. current 0.42A).

12. Connect the RS-485 communication cable to CN_COMM (BUS_A, BUS_B) of PRVC1.

13. Set the main function dip switch of the PRVC1 PCB.

14. Set the dip switch of the water source unit main PCB.

15. Turn on the main power to the water source unit.

16. Check the signal of water flow control valve to CN_AO (AO_01, GND) of PRVC1, and check the water flow rate.

Figure 26: Control Kit Within the Water Mini Unit.

• Install the product on a flat surface with the enclosed screws, otherwise, the PRVC1 PCB may not be anchored properly.

•

Do not damage the case of the Variable Water Flow Control Kit as it may cause the PCB to malfunction.

WATER CIRCUIT INSTALLATION

Variable Water Flow Control Kit (Required Accessory)

Due to our policy of continuous product innovation, some specifications may change without notification.

1: Terminal block

2: Transformer

3: PRVC1 PCB

WATER CIRCUIT | 51

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