Gree HLR8Pd/Na-K Handbuch zur Geräteinstallation - Seite 12

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Unit Installation

◆ HLR12Pd/Na-M, HLR14Pd/Na-M

4.8 Wiring of the 2-Way Valve

The 2-way valve is required to control water flow for cooling operation. The role of 2-way valve is to cut off

water flow into the underfloor loop when the fan coil unit is equipped for cooling operation.

General Information

Type

NO 2-wire

NC 2-wire

(1) Normal Open type. When electric power is NOT supplied, the valve is open. (When electric power is

supplied, the valve is closed.)

(2) Normal Closed type. When electric power is NOT supplied, the valve is closed. (When electric power is

supplied, the valve is open.)

How to Wire 2-Way Valve:

Follow steps below to wire the 2-way valve.

Step 1. Uncover the front cover of the unit and open the control box.

Step 2. Find the terminal block and connect wires as below.

Power

230V 50Hz 1Ph AC

XT2

2-Way Valve 2

Operating Mode

Closing water flow

Opening water flow

Closing water flow

Opening water flow

2-Way Valve 1

Supported

Yes