REFRIGERANT CONNECTIONS (AX)
EN
ACCURATE AX - AW - AD - AT - AF
37
Warning:
All work must be performed, components selected and materials used in complete accordance with the legislation in force
in material in the country concerned, and considering the operating conditions and intended uses of the system, by qualified personnel.
The diameter of connecting pipes between the conditioner and condensing unit must be respected, otherwise the guarantee becomes
invalid. Always use large radius curve (bending radius at least equal to pipe diameter)
NOTE:
The diameter of the refrigerant lines between the air-conditioner and the remote condenser must be sized according to their
length, and therefore will not always coincide with the inside diameter of the fitting supplied by the manufacturer for welding; the lines must
be sized so as to guarantee a minimum refrigerant speed of around 7 m/sec at all times, above all when using variable capacity compressors.
Check and make sure that the internal heat load to be dissipated is never less than 30-35% of the capacity of air conditioning installed.
Special care must be paid to the insulation of the hot gas pipes under the raised floor.
RECOMMENDED OUTSIDE DIAMETERS OF THE LINES (for equivalent lengths up to 50m)
Equivalents lenght in meters of: curve, shut-off and non-return valve
Nominal diameter
(mm)
90°
45°
180°
90°
12
0,50
0,25
0,75
2,10
1,90
14
0,53
0,26
0,80
2,20
2,00
16
0,55
0,27
0,85
2,40
2,10
18
0,60
0,30
0,95
2,70
2,40
22
0,70
0,35
1,10
3,20
2,80
28
0,80
0,45
1,30
4,00
3,30
Mod.
05
07
10
15
18
20
26
29
39
30
40
50
55
60
70
80
90
GAS
PIPELINE
DIAMETER PIPE mm
R410A
Liquid line
10
14
16
2x14
2x16
2x16
Minimum thickness
1,00
1,00
1,00
1,00
1,00
1,00
Discharge line
16
18
22
2x18
2x22
2x22
Minimum thickness
1,00
1,00
1,00
1,00
1,00
1,00
