Installation
CAIR
plus
44
PR-2009-0096-GB • Subject to modifications • R8-10/2015
6.3.4 Installing humidifier
Refer to the supplied documentation for instructions on assembly and installation.
•
Also observe the German Drinking Water Act (Trinkwasserverordnung – TWVo).
The following recommendation applies “Guide values for the quality of water circulating
in the spray humidifier (air washer)” (in accordance with: VDI 3803 “HVAC systems.
Constructional and technical requirements”, February 2010, Appendix A, Table A1).
Quality
Room-ventilation system equipment for:
Room-air quality
IDA 2, IDA 3 or
IDA 4 according to EN
13779
Room-air quality
IDA 1 according to EN
13779
for IT rooms
Room-air quality
IDA 1 according to EN
13779 for sterile and
cleanrooms
indirect evaporative cooling
(to be determined depending on the system)
Appearance
–
klar, farblos und ohne Bodensatz
pH value
–
7 to 8.5
Total salt concentration
TSC
g/m³
< 800
< 250
< 100
Electrical conductivity
(at reference temperature 20 °C)
mS/m
< 100
< 30
< 12
μ
S/cm
< 1000
< 300
< 120
Calcium
Ca
2+
mol/m
3
> 0.5
g/m
3
> 20
Carbonate hardness
KH
°dH
< 4
Total hardness
GH
°dH
< 7
Chloride
CL
-
mol/m
3
< 5
g/m
3
< 180
Sulphate
SO
4
2-
mol/m
3
< 1.5
< 1
g/m
3
< 150
< 100
Consumption KMnO
4
g/m
3
< 50
< 20
< 10
Microbial count
CFU (colony
forming units)/
mL
< 1000
< 100
< 10
Legionella bacteria
CFU/100 mL
< 100
Notice!
When installing a water-softening unit DencoHappel recommends to repeat the
water analysis. The total salt concentration shall not exceed 250 g/m³! The elec-
trical conductivity shall not exceed 300 µS!
ATTENTION
Risk of damage to the unit!
•
Do not operate honeycomb humidifiers with fully demineralized water.
