Instruction Manual ZHK
V07-21.0
73/140
6.2.2 Protection of the drinking water against pollution
During installation, it must be ensured by appropriate measures that the installer complies with
EN1717. This European Standard contains general requirements to safety installations, which are
purposed to protect the drinking water against pollution. For instance, installation of safety equip-
ment to prevent against drinking water and against contamination due to malfunction or a backfill.
Before commissioning, such appropriate measures must be executed by the operator on site to en-
sure conformity to EN 1717.
6.2.3 Special indications for different humidification systems
Spray humidifier
–
Installation of the pump circuit
General indications
A spray humidifier could be used for humidification as well for air cleaning, in the function of an air
washer. Hereinafter, the term
‘
spray humidifier
’
is used, but the description is also valid if the sys-
tem is used as an air washer.
Spray humidifier pump circuit is delivered in parts, see
1. Pump on anti-vibration socket plate
2. Suction side tube (from water tank nozzle till flexible connector)
3. Pressure side tube (from flexible connector till water tank nozzle)
4. Flexible connecting tubes
5. Threaded strut
The connection between the parts must be made by flexible tubes and clamps, which ensure the
vibration decoupling of the pump arrangement.
Figure 169:
Parts of spray humidifier pump circuit
The assembly of the parts must be completed on site by the customer and has to follow the pre-
sent description. To avoid the flexible compensator becoming loose, due to situations listed below,
the installer must follow exactly, the instructions of the installation process.
The flexible compensator can become loose, if
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