REFRIGERATION LINE CONNECTIONS

When connecting the refrigerant tubing

-Keep all tubing runs as short as possible.

-Use the flare method for connecting tubing.

-Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection.

-Check carefully for leaks before starting the test run.

 

 

Compressor

 

 

 

3-Way valve

 

Indoor unit

Evaporator

Condenser

Outdoor unit

 

 

2-Way valve

 

 

 

Capillary tube

 

Models

 

 

9SRA-HE

12SRA-HE

15SRA-HE

18SRA-HE

24SRA-HE

 

 

 

 

 

 

 

 

Refrigeration Tubing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connection method

 

 

Flare

Flare

Flare

Flare

Flare

 

 

 

 

 

 

 

 

Refrigerant tube outer diameter

in.

Liquid

1/4

1/4

1/4

1/4

3/8

 

 

 

 

 

 

 

 

 

in.

Suction

1/2

1/2

1/2

5/8

5/8

 

 

 

 

 

 

 

 

Limit of tubing length

ft.

 

49

49

49

49

49

 

 

 

 

 

 

 

 

Limit of elevation difference between the two units

ft.

 

20

20

20

20

20

 

 

 

 

 

 

 

 

Installation & service manual _9

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Image 12
Plantronics R-410A manual Refrigeration Line Connections, When connecting the refrigerant tubing

R-410A specifications

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