Refrigerant Piping - Daikin Siesta ATYN20LV1 Installation Manual

If the pipe is too long, both the capacity and reliability of the unit will drop. As the number of bends increases, resistance to
the flow of refrigerant system increases, thus lowering cooling capacity. As a result, the compressor may become defective.
Always choose the shortest path and follow the recommendations as tabulated below:
Heat Pump Model
Indoor (ATYN)
Model
Outdoor (ARYN)
Min. Allowable Length (L), m
Max. Allowable Length (L), m
Max. Allowable Elevation (E), m
Gas Pipe Size, mm/(in)
Liquid Pipe Size, mm/(in)
Be sure to add the proper amount of additional refrigerant. Failure to do so may result in reduced performance.
*
Remark: The refrigerant pre-charged in the outdoor unit is for piping length up to 7.5m.

REFRIGERANT PIPING

Indoor unit
Outdoor Unit
20J
20C
12
5
9.52
(3/8")
6.35
(1/4")
1-9
L E
25J 35J
25C 35C
3
12 12
5 5
9.52 12.70
(3/8") (1/2")
6.35 6.35
(1/4") (1/4")
50J 60J
50C 60C
20 20
15 15
12.70 15.88
(1/2") (5/8")
6.35 6.35
(1/4") (1/4")