Dantherm CDP 50 Service Manual page 48

EN
Ensure the chemistry of the water is correct
Water quality
When adding chemicals
Wit own production of
chlorine
Langelier Saturation index
48
The correct combination of chemicals in an indoor swimming pool is crucial, both for the health
of users and for the inventory inside the pool room and the swimming pool's technical room.
Insu ciently treated water results in poor hygiene, while water that has been excessively treated
results in gases in the air that contain chlorine, which can irritate the eyes and cause breathing
di culties.
At the same time, the incorrect composition of chemical ingredients in the water can destroy all
of the inventory in a very short space of time, including the dehumidi er and other equipment
that have been installed to process the air.
Shown below are the threshold values, which apply to products for indoor swimming pools in
accordance with EN/ISO 12944-2, protection class C4. These threshold values must be complied
with for the warranty to be valid.
The following guideline values are applicable to swimming pools with the addition of chemicals.
Chemicals
Free chlorine content
Combined chlorine content
pH
Total alkalinity
Calcium hardness
Total dissolved solids
Sulphates
The following guideline values are applicable to swimming pools with self-production of chlorine:
Chemicals
Salt (NaCl)
Total dissolved solids
pH
Total alkalinity
Calcium hardness
Sulphates
It is advisable to use the Langelier Saturation index to ensure that the combination of the
di erent water parameters is acceptable.
Contact Dantherm Air Handling A/S if necessary.
ppm
1.0-2.0
Max. 1/3 of free chlorine content
7.2-7.6
80-150
250-450
< 2000
< 360
ppm
< 30,000
< 5500
7.2-7.6
80-150
250-450
< 360