Refrigerant Line Sizing

Check the following table (Table 3) for correct suction and liquid line sizes for any combination of the unit size and the maximum refrigerant line length.

 

 

Refrigerant Line Length (Ft)

 

 

 

Unit Size

0 - 24

25 - 49

50 - 74

 

 

(Ton)

 

 

Line Outside Diameter (In)

 

 

SEER

 

Suction

Liquid

Suction

Liquid

Suction

Liquid

 

1.5

3/4

3/8

3/4

3/8

7/8

1/2

13

2.0

3/4

3/8

3/4

3/8

7/8

1/2

13

2.5

3/4

3/8

3/4

3/8

7/8

1/2

13

3.0

7/8

3/8

1 1/8

3/8

1 1/8

1/2

13

Table 3:Refrigerant Line Sizing

The factory charge is sufficient for 25 feet of standard liquid line. For longer or shorter liquid line lengths, adjust the charge as follows:

1/4" Line

+/- 0.3 oz. Per foot

5/16" Line

+/- 0.4 oz. Per foot

3/8" Line

+/- 0.6 oz. Per foot

1/2" Line

+/- 1.2 oz. Per foot.

Vertical Separation between Indoor and Outdoor Units

Maximum allowable vertical separations between indoor and outdoor units are illustrated in Figure

4-A and Figure 4-B. It's 70' when the indoor unit is below the outdoor unit (Figure 4-A), and 50' when the indoor unit is above the outdoor unit (Figure 4-B).

To ensure good oil return to the compressor when the indoor unit is below the outdoor unit, suction line oil trap should be used as illustrated in Figure 4-A.

Tubing Connections

!CAUTION - Use extreme caution in removing the caps from the suction and liquid line fittings, as there is pressure present. A fitting is on the liquid line to remove pressure.

!CAUTION - Heat Pumps are charged with refrigerant. Heat Pump liquid and suction valves are closed to contain the charge within the unit. Do not force the valve stem against the retaining ring. If the valve stem is backed out past the retaining ring, system pressure could force the valve stem out of the valve body and possibly cause personal injury.

!CAUTION - The piston is in the accessory bag. Don't forget to take it out and put into the indoor liquid pipe orifice.

Instructions on the field tubing connections and valve opening procedure are as follow:

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Haier HR18D2VAR, HR36D2VAR, HR30D2VAR, HR24D2VAR manual Refrigerant Line Length Ft Unit Size Ton

HR24D2VAR, HR36D2VAR, HR18D2VAR, HR30D2VAR specifications

Haier, a globally recognized brand in home appliances, has developed a line of air conditioning units that includes the HR30D2VAR, HR18D2VAR, HR36D2VAR, and HR24D2VAR models. These units are designed to deliver optimal comfort and energy efficiency for both residential and commercial spaces.

One of the standout features of these models is their advanced inverter technology. This allows the air conditioners to adjust the compressor speed according to the cooling requirements of the room. As a result, these units can cool spaces rapidly while consuming less energy compared to traditional models. The inverter technology not only contributes to energy savings but also ensures a quieter operation, making them ideal for bedrooms and workspaces.

The HR series models are equipped with multiple cooling modes, allowing users to select the most appropriate setting based on their comfort needs. Whether it's a hot summer day or a mild evening, users can tailor the temperature to their liking. Additionally, the models come with a sleep mode that gradually adjusts the temperature, providing a comfortable sleeping environment while saving energy.

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In summary, the Haier HR30D2VAR, HR18D2VAR, HR36D2VAR, and HR24D2VAR air conditioners combine advanced technologies such as inverter operation, high energy efficiency, robust filtration systems, and smart connectivity. These features make them suitable for a variety of settings, ensuring comfort and ease of use for homeowners and businesses alike.