Specifications

Indoor
Outdoor
15 15 15 45
88825
10 10 10 10
Maximum No. of Bends
Model
Maximum Length, m
Maximum Elevation, m
Model
Liquid (mm/in)
6.35 /
1
/
4
6.35 /
1
/
4
9.52 /
3
/
8
6.35 /
1
/
4
9.52 /
3
/
8
9.52 /
3
/
8
Suction (mm/in)
15.88 /
5
/
8
12.70 /
1
/
2
15.88 /
5
/
8
15.88 /
5
/
8
15.88 /
5
/
8
15.88 /
5
/
8
52
(3) REFRIGERANT PIPING
MAXIMUM PIPING LENGTH AND MAXIMUM NUMBER OF BENDS
When the pipe length becomes too long, both the capacity and reliability drop. As the number of bends
increases, system piping resistance to the refrigerant flow increases, thus lowering the cooling capacity, and
as the result the compressor may become defective. Always choose the shortest path and follow the recom-
mendation as tabulated below:
Piping Sizes (Flare Connection Type)
Piping sizes are as follows:
Piping Connection to the Units
x Align the center of the piping and tighten the flare nut sufficiently with fingers.
x Finally tighten the flare nut with torque wrench unit the wrench clicks.
x When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on
the wrench.
Pipe Size (mm/in) Torque (Nm)
6.35 (1/4) 18
9.52 (3/8) 42
12.70 (1/2) 55
15.88 (5/8) 65
19.05 (3/4) 78
ACM / A5CM 20E/ER ACM / A5CM 25E/ER
ALC 18 / 20 C/CR,
A5LC 20 C/CR
ALC / A5LC 25 C/CR
ALC / A5LC
28 C/CR
ALC 30 C/CR,
A5LC 35 C/CR
ACM / A5CM 28E/ER
ALC 18 / 20
C/CR
ALC 25 C/CR ALC / A5LC
28 C/CR
ALC 30 C/CR,
A5LC 35 C/CR
A5LC 20 C/CR A5LC 25 C/CR