TCL TCA-18HRA/DVO, Technical Manual, Page: 67 / 113

DC Inverter Air
8. Design and Installation of Connecting Pipes
8.1. Pipe length and drop height shall comply with the scope required below.
Mode
18K 24K
Max pipe length 30m 35m
Max drop height l 15m 20m
Max bending No. 5 5
The refrigerant shall be
increased while the
22g/m 65g/m
mounted pipe is more
than the standard piping
Mode
36K 48K 60k
Max pipe length 50m 50m 50m
Max drop height l 30m 30m 30m
Max bending No. 5 5 5
The refrigerant shall be
increased while the
50g/m 50g/m 50g/m
mounted pipe is more
than the standard piping
Note: A return oil elbow must be equipped for each drop of 10m in the vertical height of
refrigerant pipe!
Connection Mode
Gas Side Liquid Side
Outdoor Unit Flare nut Flare nut
Indoor Unit Flare nut Flare nut
8.2. Material and Size of the Pipes
Outdoor pipe dimension and installation modes (in sequence of cooling capacity)
Pipe material Copper Pipe For Air Conditioner
Model 18‐‐22K 23‐‐28K 30‐‐48K 49‐‐60k
Size(mm)
Liquid side Φ6.35(1/8inch) Φ9.52(3/8inch) Φ9.52(3/8inch) Φ9.52(3/8inch)
Gas side Φ12.7(1/2inch) Φ15.88(5/8inch) Φ19.05(3/4inch) Φ19.05(3/4inch)
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