12 WSAT-XIN
21-171
M0Q940G14-03
5 Water
connections
5.1 Water
quality
Water features
•
confirming to local regulations
•
total hardness < 14°fr
•
within the limits indicated by table
The water quality must be checked by qualified personnel.
Water with inadequate characteristics can cause:
•
pressure drop increase
•
reduces energy efficiency
•
increased corrosion potential
Provide a water treatment system if values fall outside the limits.
The warranty does not cover damages caused by limestone formations, deposits and impurities
from the water supply and / or failure from failed system clearing to clean system.
5.2 Risk of freezing
If the unit or the relative water connections are subject to temperatures close to 0°C:
•
mix water with glycol, or
•
safeguard the pipes with heating cables placed under the insulation, or
•
empty the system in cases of long non-use
5.3 Anti-freeze
solution
The use of an anti-freeze solution results in an increase in pressure drop.
Make sure that the glycol type utilized is inhibited (not corrosive) and compatible with the water circuit components.
Do not use different glicol mixture (i.e. ethylene with propylene).
5.4 Water
flow-rate
The project water-flow must be:
•
inside the exchanger operating limits (see the TECHNICAL INFORMATION section)
•
guarantee, also with variable system conditions (for example in systems where some circuits are bypassed in particular situations).
Version: Premium
Size
21
31
41
51
71
81
91
101
121
131
141
Min. installation water contents
litres
17
20
25
33
40
50
53
57
63
68
74
Version: Excellence
Size
21
31
41
51
71
81
91
101
121
131
141
151
161
171
Min. installation water
contents
litres
17
20
25
33
40
50
53
57
63
68
87
99
113
117
Содержание WSA-XIN 101
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