Water quality
Requirements and water-care for heat-exchangers (chillers) and heat-balancing plant
(temperature control units)
Subject to the equipment to be cooled or heat-balanced, certain requirements have
to be met by the cooling water regarding cleanliness and purity. The degree of the
water`s contamination, as well as the size and construction of the heat-exchanging-
or –balancing plant determine the process most suitable for the application of
additives and/or care of the water-supply in question.
In the interest of achieving the optimum layout for operating an appropriate heat-
exchanger unit or heating-cooling plant, the consistency of the water used schould
not deviate too significantly from the following list of hydrological data:
Hydrological Data
max.
unit
PH-value
7,5 – 8,5
-
Carbonate hardness
3 - 5
°dH
Free carbonic acid
0
mg/l
Carbonic acid
0
mg/l
Aggesiv carbonic acid
0
mg/l
Chlorid Cl
<50
mg/l
Sulphate So4
10
mg/l
Nitrate and nitrite
<50
mg/l
Ammonia 0
mg/l
Iron Fe
0,1
mg/l
Manganese 0,05
mg/l
Free from solids
0
mg/l
Conductivity 600-1000
µS/cm
With deviating water-quality, we recommend using the services of consultants, or to
have a water analysis or water sample sent to us.
Deltatherm is not liable for any malfunctions or damages arising from deviating water
qualities.
When employing chillers at temperatures below + 8°C, an anti-freeze medium must
be added (Release by DELTATHERM).
