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3.2.2 - Characteristics of the system
The hydraulic couplings are positioned in the lower part of the unit.
Figure 17-17a:
C1. Conditioning circuit water delivery (1")
C2. Sanitary hot water tank water delivery (3/4")
C3. Sanitary hot water tank water return (3/4")
The hydraulic connections must be complete by installing:
•
air breather valves in the highest points of the pipes;
• flexible elastic couplings.
•
stop valves.
• sieve water filter with 0.4 mm meshes.
•
thermally insulate all the components and the hydraulic pipes.
The minimum nominal diameter of the hydraulic connection pipes must be 1".
To allow for maintenance or repair operations, it is essential that each hydraulic
connection is equipped with the corresponding manual shut-off valves.
• Table 4
Necessary characteristics of the hydraulic system.
SHERPA S3 E 4
SHERPA S3 E 6
SHERPA S3 E 8
SHERPA S3 E 10
SHERPA S3 E
SMALL
SHERPA S3 12
SHERPA S3 14
SHERPA S3 16
SHERPA S3 12T
SHERPA S3 14T
SHERPA S3 16T
SHERPA S3 E
BIG
* for floor systems
** with maximum temperature of system water of 35°C
The charts in fig.18-18d show the prevalence of the circulator for each speed of the hydraulic circulator and
the load losses inside the machine from which the residual prevalence at the connections of the machine
must be obtained, expendable on the system.
Water mini-
Nominal water
mum flow rate
flow rate*
(l/s)
(l/s)
0,14
0,29
0,14
0,29
0,14
0,38
0,14
0,38
0,14
0,29 - 0,38
0,14
0,57
0,14
0,67
0,14
0,77
0,14
0,57
0,14
0,67
0,14
0,77
0,14
0,57-0,77
C4. Conditioning circuit water return (1")
C5.-C6. Refrigerating pipes connections (3/8"G
- 5/8"G)
System water
Operating
content (l)
pressure
Max**
(kPa)
Min
23
400
300
23
400
300
38
400
300
38
400
300
23 - 38
400
300
45
400
300
51
400
300
58
400
300
45
400
300
51
400
300
58
400
300
45-58
400
300
System differ-
ence in level
(m)
20
20
20
20
20
20
20
20
20
20
20
20
EN - 19
SHERPA AQUADUE
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