OUTDOOR UNIT

OUTDOOR UNIT

PITCH SUCTION LINE TOWARD OUTDOOR UNIT 1/2" FRO EVERY 10' OF LINE

INDOOR UNIT ABOVE OR

LEVEL TO OUTDOOR UNIT

70'

MAX. LIQUID LINE SUCTION LINE OIL TRAP WHEN INDOOR

ADDITIONAL SUCTION LINE OIL TRAP FOR EACH 20 FOOT RISE OF PIPE

INDOOR UNIT

INVERTED LOOP LIQUID LINE

LIQUID LINE

A

INDOOR UNIT

6'

UNIT IS 4 FEET OR

M O R E B E L O W

OUTDOOR UNIT

INDOOR UNIT BELOW OUTDOOR UNIT

B-1

OUTDOOR UNIT

INDOOR UNIT

50'

MAX.

SUCTION LINE

B-2Figure 4

Only refrigeration-grade copper piping (dehydrated and sealed) should be used. Take extreme care to keep the refrigerant tubing clean and dry prior to and during installation. If in doubt, blow out the tubing with dry nitrogen to remove any chips or debris before connection. Always keep tubing sealed until it is in place and the connections are to be made.

Refrigerant piping should be as short as possible, with a minimum of elbows or bends, to avoid capacity loss and increased operating costs.

Refrigerant lines must be adequately supported. If metal strapping is used to secure the tubing, do not allow the strapping to directly contact the tubing. Use a closed cell insulation to separate the strapping from the tubing.

Do not kink or twist the tubing.

Refrigerant piping should not be installed in a cement slab, as this limits access to the refrigerant should a leak be suspected.

To ensure good oil return to the compressor, it is important to pitch the horizontal suction line toward the compressor, approximately 1/2" for every 10' of line.

Line Insulation

Suction line requires insulation in order to prevent condensation from forming on the piping and to prevent heat gain caused by surrounding air. Generally 3/8" wall thickness of Armflex or equivalent is satisfactory. In severe application (hot, high humidity areas) greater thickness may be required. Apply the line insulation by sliding it on the sealed tuing before cutting and making connections.

Liquid line does not necessarily need insulation, however, if they are exposed to high ambient temperatures (i.e. kitchen, boiler rooms, hot attics & rooftop surface), then, they should be insulated. Make sure to use the proper size tubing for the liquid line to prevent liquid refrigerant flashing to a vapor within the liquid line.

Do not allow the vapor line and liquid line to touch together. This would cause an undesirable heat transfer resulting in capacity loss and increased power consumption.

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Haier HC24D2VAR, HC42D2VAR, HC36D2VAR, HC30D2VAR, HC18D2VAR operation manual 2Figure
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HC18D2VAR, HC24D2VAR, HC30D2VAR, HC36D2VAR, HC42D2VAR specifications

Haier has long been a name synonymous with innovative home appliances, and their line of high-efficiency mini-split air conditioning systems exemplifies this tradition of excellence. Among the standout models are the HC18D2VAR, HC24D2VAR, HC30D2VAR, HC36D2VAR, and HC42D2VAR. Each of these units brings unique features tailored to meet diverse cooling needs while emphasizing efficiency, comfort, and usability.

The HC18D2VAR is designed for smaller spaces, affording homeowners effective cooling without breaking the bank on energy costs. It features variable refrigerant flow technology, allowing the system to adjust its capacity based on the current temperature and cooling load. This ensures optimal energy use while maintaining a consistent indoor environment. The built-in inverter technology further enhances efficiency, reducing energy consumption compared to traditional systems.

Moving to the HC24D2VAR, this model expands its capabilities, making it suitable for medium-sized rooms or offices. It boasts a sleek design that allows for discreet installation, while the advanced air filtration system effectively captures dust, pollen, and other allergens, enhancing indoor air quality. Additionally, its quiet operation ensures minimal disruption, making it ideal for bedrooms and study areas.

The HC30D2VAR is tailored for slightly larger applications, with superior cooling and heating performance. This model incorporates smart technologies such as Wi-Fi connectivity, enabling users to control their air conditioning remotely via a smartphone app. It also featuresmultiple airflow settings and a programmable timer that provides convenience for busy lifestyles.

For those needing even more cooling power, the HC36D2VAR and HC42D2VAR models are designed to handle larger spaces while maintaining energy efficiency. These units come equipped with advanced cooling technologies, including turbo cooling mode for quick temperature adjustment, and an extended range of operating temperatures, ensuring reliable performance in varying climates. The sleek aesthetic of these models blends seamlessly with modern interior designs.

All five models are equipped with user-friendly interfaces and remote control options, simplifying the adjustment of settings distance. With their high Seasonal Energy Efficiency Ratios (SEER), these Haier units provide a balance of comfort and efficiency, making them an excellent choice for homeowners looking to enhance their living environment while being environmentally conscious.

Overall, the Haier HC18D2VAR, HC24D2VAR, HC30D2VAR, HC36D2VAR, and HC42D2VAR models present a comprehensive solution for modern cooling needs, combining technology, efficiency, and design into one impressive package.
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