Water Connected Air-Handling Component Installation - Remak AeroMaster Cirrus Series Installation And Operating Instructions Manual

Connection of Heat Exchangers
Water Connected Air-handling Component
Installation
Recommendations on water quality for heat exchangers
that operate using low pressure hot water (LPHW) and
chilled water:
A good water quality – e.g. salt and lime-free drinking

water – increases the
lifetime and efficiency of the heat exchanger.
Check the limiting values shown in the table annually to

prevent damage to
the hydraulic system and its components.
If necessary inhibitors must be added.

Note:
These limiting values are only basic information about the
water quality and do not form any basis for a guarantee!
Description
Symbol
Hydrogen ion
pH
concentration
Hard-
Calcium and
ness
magnesium content
(Ca/Mg)
Chloride ions Cl-
Carbon dioxide Fe
3+
Iron ions Mg
2+
Carbon dioxide CO
2
Hydrogen sulphate H S
2
Oxygen O
2
Chlorine Cl
2
Ammonia NH
3
Ratio of carbons/ HCO
sulphates SO
2-
4
1/1,78 °D = 1 °Fr, with 1°Fr = 10 g CaCO
ppm = parts per million (mg/l)
ppm = parts per billion (µg/l)
10
Effects in vent
Values
of deviation
< 7 Corrosion
7,5 - 9
> 9 Fouling
4 – 8,5 °D > 8,5 Fouling
< 50 ppm Corrosion
< 0,5 ppm Corrosion
< 0,05
Corrosion
ppm
< 10 ppm Corrosion
< 50 ppb Corrosion
< 0,1 ppm
Corrosion
< 0,5 ppm
Corrosion
< 0,5 ppm Corrosion
/
2-
>1 <1
Corrosion
3
/m
3
3
Air Handling Units