Installation Service

10.INSTALL OUTDOOR UNIT

10.3Air Purging

Air and moisture remaining in the refrigerant system have undersirable effects as indicated below. Therefore, they must be purged completely.

•Pressure in the system rises

•Operating current rises

•Cooling (or heating) efficiency drops

•Moisture in the air may freeze and block capillary tubing.

•Water may lead to corrosion of parts in the refrigerant system.

AIR PURGING WITH A VACUUM PUMP (FOR TEST RUN)

1.Check that each tube (both narrow and wide tubes) between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed. Noted that both narrow and wide tube service valves on the outdoor unit are kept closed at this stage.

2.Using a adjustable wrench or box wrench, remove the valve caps from the service on both narrow and wide tubes.

3.Connect a vacuum pump and a manifold valve (with pressure gauges) to the service port on the wide tube service valve. (Fig.35)

CAUTION

Be sure to use a manifold valve for air purging. If it is not available, use a stop valve for this pupose. The "Hi" knob of the manifold valve must always be kept closed.

4.With the "Lo" knob of the manifold valve open, run the vacuum pump. The operation time for the vacuum pump varies with tubing length and the capacity of the pump. The following table shows the amount of time for evacuation:

Table 3

Required time for evacuation when capacity of 100 liter/h vacuum pump is used

If tubing length is

If tubing length is

less than 7 m

more than 7 m

10 min. or more

15 min.or more

 

 

Indoor unit

Outdoor unit

Manifold valve

Pressure

 

gauge

Lo Hi

 

Vacuum pump

Fig.35

NOTE The require time in the table 3 is calculated based on the assumption that the ideal (or target) vacuum condition is around 10 mmHg abs.

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Haier KC18AGH, SAP-K18AM instruction manual Air Purging, AIR Purging with a Vacuum Pump for Test RUN
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KC18AGH, SAP-K18AM specifications

The Haier SAP-K18AM and KC18AGH are part of Haier's innovative line of air conditioning solutions designed to provide efficient cooling and exceptional comfort in various environments. These models stand out for their blend of modern technology, user-friendly features, and energy efficiency.

One of the main features of the Haier SAP-K18AM is its powerful cooling capacity, which enables it to quickly lower indoor temperatures, making it ideal for larger spaces or warmer climates. With a cooling capacity of 18000 BTU, this model ensures that even during the hottest summer days, users can enjoy a refreshing indoor atmosphere. The unit operates quietly, allowing for peaceful relaxation or focused work without the disturbance of loud compressor noises.

The KC18AGH model is equipped with advanced inverter technology that adjusts the compressor speed according to the cooling demand. This feature not only enhances energy efficiency but also helps to maintain a consistent temperature throughout the space. The inverter technology significantly reduces electricity consumption compared to non-inverter models, making it an environmentally friendly choice.

Both models come with a range of convenient features, including multiple cooling and fan speed options, sleep mode, and a programmable timer. The sleep mode function gradually increases the temperature at night, ensuring a comfortable sleep environment while saving energy. The programmable timer allows users to set the air conditioning unit to operate only when needed, further optimizing energy use.

Additionally, the Haier SAP-K18AM and KC18AGH are designed with user comfort in mind. They come with an easy-to-use remote control, allowing for effortless adjustments from across the room. The units also include a self-cleaning feature that helps reduce mold and bacteria buildup, ensuring that the air quality remains high.

In conclusion, the Haier SAP-K18AM and KC18AGH air conditioners represent cutting-edge technology and design. With powerful cooling capabilities, energy-efficient inverter technology, and a suite of user-friendly features, these models are ideal for anyone looking to improve the comfort and quality of their indoor environment. Whether for residential or commercial use, Haier continues to set the standard in reliable and effective air conditioning solutions.
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