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Water systems and pipework
4.3
Accessories
Installation of the anti-vibration coupling
Place the anti-vibration coupling between the unit and the base.
Use the holes on the unit frame (15 mm diameter).
If the anti-seismic spring couplings are installed, the total height of the
unit increases.
W3
Fig. 60 W1 to W4: load points of the unit
CS AWP 16-24
CS AWP 31-41
A
518
425
B
825
840
C
930
995
D
Condensate collection channel
Table 45 Distance in mm for the installation of the anti-vibration coupling
5
Water systems and pipework
5.1
Water quality
The water quality should be checked by qualified personnel.
Water with inadequate characteristics can cause:
• Increasing of pressure drop;
• Decreasing of energy efficiency;
• Increasing of symptoms of corrosion.
Water features must be:
• Within the limits indicated by the graphic;
• Comply with VDI 2035 requirements.
Provide a water treatment system, if values fall outside the limits.
NOTICE
The warranty does not cover damages caused by limestone
formations, deposits and impurities from the water supply and/or
from failure to clean the systems.
The following graphic can be used to decide whether a filling water
treatment is necessary. In the case of ambivalent systems, the highest
requirements of the heat generators used in the overall system apply.
48
W4
W2
W1
0010045067-001
CS AWP 53-59
253
2715
1029
3
V [m ]
2,60
2,40
2,20
2,00
1,80
1,60
1,40
1,20
1,00
0,80
0,60
0,40
0,20
0,00
0
5
Fig. 61 Requirements for filling and make-up water volume for heat
pumps <= 100 kW
[1]
A - Above the curve, use fully demineralised filling water with an
electrical conductivity of <=10 microsiemens / cm
[2]
B - Below the curve use untreated tap-water. Fill in compliance
with drinking water regulations
[3]
H
- Water hardness
w
[4]
V - Total water volume: filling and make-up water volume of the
heating system during the service life of the heat pump
CAUTION
With fully demineralised water, it is important to ensure that the
permissible pH value of 7.5 - 9 (permissible value for copper) is
complied with.
Failure to comply with this value can result in the heat pump being
destroyed.
▶ In the case of bivalent systems, check whether other heat generators
have different requirements.
Cleaning
Before connecting the water to the unit, clean the system thoroughly
with specific and effective products to remove residues or impurities
that may affect functioning.
Existing systems must be free from sludge and contaminants and
protected against build-ups.
New systems
In case of new installation, make sure to wash it entirely before
commissioning the central installation (certifies that the circulator is
uninstalled). This removes residues of the installation process (welding,
waste, joint products, etc.).
The system must then be filled with clean high-quality tap water.
Existing systems
If a new unit is installed on an existing system, the system must be rinsed
to avoid the presence of particles, sludge and waste. The system must be
drained before installing the new unit.
Dirt can be removed only with a suitable water flow.
Each section must then be washed separately.
Particular attention must also be paid to "blind spots" where a lot of dirt
can accumulate due to the reduced water flow.
The system must then be filled with clean high-quality tap water. If, after
rinsing, the quality of the water is still unsuitable, a few measures must
be taken to avoid problems.
A
B
10
15
H [ºdH]
w
0010045166-001
CS3000 AWP – 6721852570 (2023/04)
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