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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 pipe (1")
C2. Drinkable water inlet (3/4")
C3. Domestic hot water outlet (3/4")
The hydraulic connections must be complete by installing (fig.5):
•
air breather valves aria in the highest points of the pipes;
•
please refer to "fig.5" for the position of the hydraulic and refrigerant connections. Heights are indicative, it is
recommended to use flexible elastic junctions between the system pipes and the hydraulic connections of the
unit;
•
stop valves (on the drinkable water inlet, on the DHW outlet, on the system water return pipe, necessary to ease
maintenance operations);
•
sieve water filter with 0.4 mm meshes on the drinkable water inlet and on the return pipe from the system to intercept
possible particles in the hydraulic system. Install in an easily accessible position during cleaning operations;
•
thermally insulate all the components and the hydraulic pipes.
•
In case of installation with hydraulic connections upwards ("A"), leftwards ("C") or rightwards ("B"), it is necessary
to remove from the cover the precut metal sheet part on the pipes output side.
Use a hacksaw to remove the precut metal sheet.
•
In case of installation with hydraulic connections leftwards ("C"), rightwards ("B") or towards the rear part of the
machine, use 90° sharp bends (two 1" and two 3/4").
•
Install a non-return valve on the drinkable water inlet (see paragraph "Hydraulic circuit" - rif.18).
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
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 pipe (1")
C5.-C6. Refrigerant pipes connections (3/8"G
- 5/8"G)
System water
Operating
content (l)
pressure
(kPa)
Min
Max**
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
SHERPA AQUADUE TOWER
System differ-
ence in level
(m)
20
20
20
20
20
20
20
20
20
20
20
20
EN - 19
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