Installing The Plumbing - Elsteam EHPN Series Operating And Maintenance Manual

5.3 Installing the plumbing

Toinstalltheplumbingcorrectly,providethefollowingoutsidetheAHU,intheimmediatevicinityofthepumpunit:
• Ashut-offtap;
• Afiltersupplementingtheonealreadypresentinsidethesolenoidvalve;
• A pressure reducer if the mains pressure exceeds 0.4 MPa (4 bar).
Ifusingmetalpipes,makesuretheyareproperlyearthed.
Donotusepre-existingsystempipeworkorusedmaterials.Onlyusethematerialssuppliedwiththeproduct.
NOTE:Whenusingapressurereducer,makesureitiseffectiveanddoesnotsignificantlyreducetheflowrate.Theminimum
flow rate must be at least twice the maximum consumption of the humidification systems.
The pressure must be no less than 0.05 MPa (0.5 bar).
Example:
EHPN060 humidifier with maximum humidity of 60 l/h (i.e. 1 l/min)
Minimum inlet flow rate = maximum humidification 1 l/min x 2 = 2 l/m.
Heatingcablesareusedonboththesupplypipeupstreamofthepumpunit,theconnectionpipefromthepumpunittothe
rack,andthedistributionrackoutletpipe.
MALFUNCTIONING OF THE EQUIPMENT
• The water supply must have a minimum pressure of 0.02 MPa (0.2 bar).
• Connect the pump inlet to the mains using the hose supplied in order to reduce water hammer in the water supply to the
humidifier.
• IftheAHUisexposedtoatmosphericagents,fitheatingcablestothewatersupplyanddischargepipes.
Water specifications
General specifications
Description
Water pressure
Water temperature
Electrical conductivity
Total hardness
Minimum supply flow rate
Optimal properties
Description
Water pressure
Water temperature
Electrical conductivity
Total hardness
Minimum supply flow rate
924EHPNE4.01 - EHPN series humidifiers
NOTICE
Fig. 18. Water inlet connection
Features
0.05...0.4 MPa (0.5...4) bar)
4...50°C(39.2..122°F)
0...100μS/cm(atatemperatureof20°C(68°F))
0...5 °f
2x production capacity (l/min)
Features
0.1...0.3 MPa
5...20°C(41..68°F)
0...25μS/cm(atatemperatureof20°C(68°F))
0...2 °f
2x production capacity (l/min)

| 33 | Installing the plumbing |

02/2024