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6. Water connection
Risk of scalding!
Very hot water to be found in and around the
steam humidifier during and after operation
.
Have all installation work done by expert staff
in order to avoid scalding hazards due to
improper water guidance.
Risk of electrical shock!
Hazardous electrical voltage!
Before starting installation work ensure that
the unit is not yet connected to the power
supply.
General Rules
•
Obey local water utility regulations
•
Verify that necessary safety measures
have been taken – in compliance with
either German Technical and Scientific
Association for Gas and Water
(DVGW) guidelines (DIN EN1717) or
local regulations – that eliminate back-
flow of polluted water into drinking
water treatment facilities. This may
require the installation of a system sep-
arator of the CA type (minimum mea-
sure, allowable only when free
discharge into the drainage system is
given). Within the humidifier, a double
check valve (58) is located in the water
supply line. It prevents - in accordance
with DIN EN 61770 - the backflow of
water.
•
Supply water must not exceed 40°C
(104°F)
•
Allowable range of water pressure: 1 to
10 bar /14.5 to 145 psi (100 x 10
3
to
100 x 10
4
Pa)
•
For connection to the water supply
pipe, make use of a water hose
•
Blow-down water must drain freely
•
As installation or retrofit option, the
DVGW-conform
HyFlow
system sepa-
rator is available for the HygroMatik
electrode steam humidifiers (except
SLE 02).
•
You can also use a standard BA/CA
system separator for the corresponding
fluid category.
6.1 Feed water quality
The following applies to electrode steam
humidifiers (ELDB):
•
Only use drinking water* or treated
drinking water (partially softened or
mixed deionised water) without chemi-
cal additives and with a conductivity
between 200 and 800µS/cm. Beyond
conductivity levels of 800µS/cm up to a
maximum of
1250µS/cm and below
conductivity levels of 200µS/cm to a
minimum of
125µS/cm, special adjust-
ments are required. In this case please
contact your specialist dealer.
The following applies to heater steam
humidifiers (HKDB):
•
Only use drinking water* or treated
drinking water (partially or fully softe-
ned, mixed or normal deionised water)
without chemical additives.
•
When using deionised water, there
must be a minimum conductivity of
3µS/cm. Do not use copper or brass for
the humidifier inlet and outlet pipes.
These materials can be destroyed by
the deionised water/ condensate. Sui-
table materials are, for example, stain-
less steel or plastic pipes.
•
From a water hardness of 15°dH, we
recommend upstream water treatment.
•
The feed water that is used (indepen-
dent of the type of treatment) must
have a minimum pH value of 6.5.
* according to the drinking water regulation of
08.01.2018
WARNING
!
WARNING
!
