Limits To The Length And Heigth Difference Of Refrigerant Pipes - Ferroli OMNIA ST 3.2 Manual De Instalación, Uso Y Mantenimiento

7.3 Limits to the length and heigth 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.
fig. 9 - Outdoor unit below indoor unit
Outdoor unit
Liquid refrigerant connection
Gas refrigerant connection
Standard refrigerant charge (R32)
Indoor unit
Liquid refrigerant connection
Gas refrigerant connection
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.
(1)
Refrigerant pipes
Liquid refrigerant pipe (external diameter)
Gas refrigerant pipe (external diameter)
Max pipe length with standard refrigerant
charge
Refrigerant charge for each meter more than
15m length
Max length between indoor and outdoor unit
Max different in height (H1)
Max different in height (H2)
Contact our technical department for the required modifications if the units must operate beyond the specifications given above.
92
EN
H1
4 6 8
1/4" 1/4" 3/8"
5/8" 5/8" 5/8"
1,5 1,5 1,65
10
3/8" 3/8" 3/8"
(1) (1)
5/8" 5/8" 5/8"
4 6 8
6,35 6,35 9,52
15,88 15,88 15,88 15,88
15 15 15
20 20 38
30 30 30
20 20 20
20 20 20
Cod. 3541V991 - Rev. 00 - 09/2021
H2
fig. 10 - Outdoor unit above indoor unit
10 12 14
3/8" 3/8" 3/8" 3/8"
5/8" 5/8" 5/8" 5/8"
1,65 1,84 1,84 1,84
16
3/8" 3/8" 3/8" 3/8"
5/8" 5/8" 5/8" 5/8"
10 12 14
9,52 9,52 9,52 9,52
15,88 15,88 15,88
15 15 15
38 38 38
30 30 30
20 20 20
20 20 20
OMNIA ST 3.2
16 12T 14T 16T
3/8" 3/8" 3/8"
5/8" 5/8" 5/8"
1,84 1,84 1,84
16T
3/8" 3/8" 3/8"
5/8" 5/8" 5/8"
16 12T 14T 16T
9,52 9,52 9,52
15,88 15,88 15,88
15 15 15 15
38 38 38 38
30 30 30 30
20 20 20 20
20 20 20 20
UM
SAE
SAE
kg
UM
SAE
SAE
UM
mm
mm
m
g/m
m
m
m