NK300SE-VE - Refilling combination with heatwater treatment unit and demineralisation cartridge
2 Product Specification Sheet • EN0H-1561GE23 R0219 • Subject to change
CONSTRUCTION
METHOD OF OPERATION
In the first instance the water passes through the refilling
combination which protects the system against back flow of
heating water. It combines backflow preventer, pressure
reducing valve and ball valves in one appliance.
The backflow preventer changes to shut-off position (back
pressure) if the differential pressure between middle- and
inlet chamber falls under 0.14 bar. The check valves are
closed and the discharge valve is opened.
The pressure reducing valve reduces the inlet pressure to the
desired set-pressure on the outlet side.
Inlet pressure fluctuation does not influence the outlet
pressure, because the pressure reducing valves operate by
means of a force equalising system
(inlet pressure balancing).
The heatwater treatment unit (VE300S) installed directly
below the refilling combination (NK300S) uses the ionic
exchange principle to demineralise water and extracts all
minerals from the water. Thereby the electric conductivity of
the filling water is reduced.
TRANSPORTATION AND STORAGE
Keep parts in their original packaging and unpack them
shortly before use.
The following parameters apply during transportation and
storage:
*non condensing
Overview Components Materials
1Integrated isolation valve,
inlet and outlet side
Dezincification-resistant
brass
2Backflow preventer type BA
with discharge valve,
cartridge insert, integrated
dirt trap on the inlet side,
backflow preventer outlet
side and three measuring
points with sealing plugs
3Pressure reducing valve with
pressure gauge
4Integrated electronic smart
monitoring system
5Bleed valve
6Insulation shells EPP
7Demineralisation cartridge Polypropylene
Not depicted components:
Adjustment spring Spring steel
Seals NBR, EPDM
Diaphragm Fibre-reinforced EPDM
Discharge valve, cartridge
insert, valve insert,
mechanical components of
the refilling unit and spring
bonnet
High-quality plastic
Hardness test-kit to
determine water hardness
Fine filter mesh Stainless steel
6
7
1 42 315
Parameter Value
Environment: clean, dry and dust free
Min. ambient temperature: +5 °C
Max. ambient temperature: +40 °C
Min. ambient relative humidity: 25 % *
Max. ambient relative humidity: 75 % *
