29
EN
Cod. 3542B230 - Rev. 00 - 02/2022
OMNIA S HYBRID H 3.2
7.3
Limits to the length and height difference of refrigerant pipes
The length of the refrigerant pipes between the indoor and outdoor units must be as short as possible and is in any case limited by compliance with the maximum
height difference values between the units.
Diminution of the difference in height between the units (H1,H2) and of the pipe lengths (L) will limit the load losses, consequently increasing the overall efficiency of
the machine.
Comply with the limits given in the following tables.
H1
25
°C
45
°C
fig. 13 - Outdoor unit under indoor unit
H2
25
°C
45
°C
fig. 14 - Outdoor unit on indoor unit
Outdoor unit
4
6
8
10
UM
Liquid refrigerant connection
1/4”
1/4”
3/8”
3/8”
SAE
Refrigerant gas connection
5/8”
5/8”
5/8”
5/8”
SAE
Standard refrigerant load (R32)
1.5
1.5
1.65
1.65
kg
Indoor unit
6 - 10
UM
Liquid refrigerant connection
3/8”
(1)
3/8”
(1)
3/8”
3/8”
SAE
Refrigerant gas connection
5/8”
5/8”
5/8”
5/8”
SAE
(1)
For matching with outdoor units mod. 4-6 a reduction fitting from 3/8 ”SAE to 1/4” SAE is provided for liquid line Ø 6.35.
Refrigeration connections
4
6
8
10
UM
Liquid refrigerant pipe (external diameter)
6.35
6.35
9.52
9.52
mm
Gas refrigerant pipe (external diameter)
15.88
15.88
15.88
15.88
mm
Maximum length of pipe with standard refriger-
ant load
15
15
15
15
m
Refrigerant load for each metre in length over
15 m
20
20
38
38
g/m
Maximum length between the indoor and
outdoor unit
30
30
30
30
m
Maximum height difference (H1)
20
20
20
20
m
Maximum height difference (H2)
20
20
20
20
m
Contact our technical department for the required modifications if the units must operate beyond the specifications given above.
