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CA0130EAND
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Haier CA0130EAND [20/42] Installation

Installation

■ SCHEMATIC DIAGRAM of WATER SYSTEM

Symbol Description Symbol Description

Check valve Water pump

Automatic exhaust

valve

Flexible connection

Water lter Expansion tank

Stop valve

Electronic water

processor

Thermometer 3-way valve

Pressure gauge 2-way valve

Heater

Fan coil

Basic requirements

The chilled water pipelines may be connected as per relevant procedure when the unit is installed in place. Such

pipelines shall be free from any foreign matter, and must conform to local piping regulations and rules.

1. Before unit operation, thoroughly ush all chilled water pipelines to ensure that they are free from any foreign

matter. Note: Do not ush any foreign matter into the evaporator.

2. Water must ow into the heat exchanger via the inlet. The opposite water direction through the heat exchanger

may degrade the unit performance, and give rise to fault in ow switch.

3. The water pump installed in the water pipeline system is equipped with a starter, and directly pumps water into

the heat exchanger of the water system.

4. Tubing and connectors must not be mounted on the unit but independently supported.

5. The nozzles and connectors of the heat exchanger shall be easily disassembled for operation, cleaning and

inspection over the evaporator nozzle.

6. The evaporator is provided with a 40-mesh lter, which must be installed at the water inlet of the unit and

insulated (see the above diagram).

7. The heat exchanger ports and the site pipelines shall be exibly connected to reduce vibration

transmitted to buildings.

8. To facilitate troubleshooting, a thermometer or pressure gauge shall be installed on the water inlet and outlet

pipelines. Pressure or temperature instrument are not provided with the unit and are at users’ own expenses.

9. Drain ports shall be arranged at all low points of the water system to ensure that water in the evaporator and

the system is completely discharged; exhaust valves shall be arranged at all high points to vent air in the

pipelines. The exhaust valves and drain ports are not insulated for easy troubleshooting.

10. All water pipelines in the system exposed to frost shall be thermally insulated.

11. Outdoor chilled water pipelines shall be covered with an auxiliary heating tape and insulated with 20 mm thick

thermal insulation material, so as to avoid frozen or ruptured pipelines due to low temperature. The power

supply of the heating tape shall be equipped with a separate fuse.

12. Where the ambient temperature is below 0°C, or the unit is to idle for a long time, please discharge water from

the unit through the water outlet pipeline connected with the plate heat exchanger of the unit. If no water

discharge is required for the unit in winter, do not cut off the power supply. The fan coil in the water system must

be provided with a 3-way valve to ensure that the water system is smoothly circulated after the winterizing water

pump is started.

Haier CA0130EAND [20/42] Installation

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