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We reserve the right to make changes without any prior notice.
Translation from original instructions
6.6.2 Sizing of lines for "LE" and "LE/HP" units
The recommended diameters for equivalent lengths up to 30 m are given below.
Recommended diameters for R410A - The thickness of the pipe must be compatible with the refrigerant used and
with current regulations.
Model
Equivalent length 10 m
Equivalent length 20 m
Equivalent length 30 m
Gas
Liquid
Gas
Liquid
Gas
Liquid
6
16
10
16
10
16
12
8
16
10
18
12
22
12
11
18
10
18
12
22
16
16
22
12
22
16
22
16
19
22
12
28
16
28
16
22
22
16
28
16
28
16
24
22
16
28
16
28
16
28
28
16
28
16
35
18
32
28
16
35
18
35
18
35
28
16
35
18
35
18
42
28
16
35
18
35
22
48
35
16
35
22
35
22
The above mentioned diameters were chosen in order to optimise the performance of the units, contempo-
raneously ensuring the proper operation at the permissible conditions and to contain the refrigerant charge
within reasonable limits.
6.6.3 LE version: unit installed at a higher level than the remote exchanger
A summary is given below of the measures to be taken if the unit is installed at a higher level than the evaporator.
There must be syphons on the vertical sections of the suction line "G" to facilitate oil return to the compressor. The height
"h" must be less than 4 metres.
In the horizontal sections of the suction line "G", make a slope of at least 1% to facilitate oil return to the compressor.
