35
We reserve the right to make changes without any prior notice.
Translation from original instructions
Table 1B - R410A Recommended diameters for units with inverter controlled compressors - The thickness of the
tube must be compatible with the refrigerant used and with current regulations
Model
Circuit
Equivalent length
10 m
Equivalent length
20 m
Equivalent length
30 m
Equivalent length
40 m
Equivalent length
50 m
Gas
Liquid
Gas
Liquid
Gas
Liquid
Gas
Liquid
Gas
Liquid
7.1
1
10
10
10
10
-
-
-
-
-
-
12.1
1
12
12
12
12
-
-
-
-
-
-
16.1
1
16
16
16
16
18
16
18
16
18
16
23.1
1
16
16
16
16
18
16
18
16
18
16
27.1
1
18
16
18
16
22
16
22
16
22
16
33.1
1
18
18
18
18
22
18
22
18
22
18
35.2
1
18
18
18
18
22
18
22
18
22
18
36.2
1
16
16
16
16
16
16
18
16
18
16
2
16
16
16
16
16
16
16
16
16
16
45.2
1
22
18
22
18
22
18
22
18
22
18
44.2
1
16
16
16
16
18
16
18
16
18
16
2
16
16
16
16
16
16
16
16
16
16
58.2
1
18
16
18
16
22
18
22
18
22
18
2
18
16
18
16
22
16
22
16
22
16
66.3
1
16
16
16
16
18
16
18
16
18
16
2
18
18
18
18
22
18
22
18
22
18
82.3
1
16
16
16
16
18
16
18
16
18
16
2
22
18
22
18
22
22
22
22
22
22
100.4
1
22
18
22
18
22
18
22
18
22
18
2
22
18
22
18
22
18
22
18
22
18
Should the length of the cooling lines envisage an increase of the diameters compared with those required for
a length of 10 m, we recommend implementing the horizontal sections of the cooling line with the diameters
prescribed for the total length, while the vertical sections must be implemented maintaining the prescribed
diameters for a length equal to 10 m.
For example, consider the 33.1 size with a total length of cooling lines of 40 m, of which 30 m of horizontal
sections and 10 m of vertical risers; the diameters of the horizontal lines will be respectively 22 mm for the
discharge and 18 mm for the liquid, while the diameters of the vertical lines will be 18 mm for the delivery and
18 mm for the liquid.
For the units of the series equipped with an inverter-controlled compressor, the maximum length of the pipes is
20 metres for sizes 7.1 and 12.1, and 50 metres for the rest.
