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EN0H-1561GE23 R0219
Boiler Room Valves
NK300SE-VE
Refilling combination with heatwater
treatment unit and demineralisation cartridge
APPLICATION
The demineralisation unit of the Honeywell NK300SE-VE
facilitates the demineralisation of heating water according
to VDI-guideline 2035, sheet 1 and 2. Lime scale and
thereby caused damages and malfunction in hot water
heating system (EN 12828) are avoided efficiently.
The refilling combination fitted on the inlet and based on a
BA-type backflow preventer protects the drinking water
supply against back flow of heating water according to
EN 1717.
SPECIAL FEATURES
• Integrated electronic smart monitoring system
simplifies the determination of cartridge exchange
• Easy installation, programming and exchange of
cartridge without tools
• Permanent connection with the drinking water supply in
accordance with EN 1717 by hose line or piping is
possible
• Optimal protection of the drinking water supply system
• Pressure reducing valve with inlet pressure balancing -
inlet pressure fluctuation does not influence the outlet
pressure
• Outlet pressure adjustable and directly visible on the
pressure gauge
TECHNICAL DATA
Media
Medium: Water
Freshwater hardness range*: 0°dH-26°dH
0°fH-46,4 °fH
0 mmol/l - 4,64 mmol/l
Connections/Sizes
Connection size discharge: HT40
Connection size:
Connection ball valve
backflow preventer:
Pressure values
Max. inlet pressure: 10 bar
Outlet pressure: 1.5 - 4 bar
Preset outlet pressure: 1.5 bar
Operating temperatures
Max. operating temperature
medium:
1
/2" external thread
G 1/4"
30 °C
Specifications
Liquid category backflow
preventer BA:
Installation position: horizontal pipework with
* In order to estimate the capacity of the cartridge for fresh water hardness >
26°dH/46,4 °fH/4.64 mmol/l a manual calculation method has to be used.
(see Installation Manual of the P300 cartridges incl. in the packaging of the
cartridges)
4 (toxic, highly toxic,
tumourigenic, radioactive
materials)
discharge connection
directed downwards
Suitable for heating systems
with the following materials:
aluminium, aluminium
alloys, steel, copper, copper
alloys and plastics.
Treated water has modified
corrosive chemical
parameters. Conditioning by
means of inhibitors is to be
provided for separately.
Product Specification Sheet • EN0H-1561GE23 R0219 • Subject to change 1
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NK300SE-VE - Refilling combination with heatwater treatment unit and demineralisation cartridge
CONSTRUCTION
Overview Components Materials
1 42
1 Integrated isolation valve,
3
15
6
7
inlet and outlet side
2 Backflow 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
3 Pressure reducing valve with
pressure gauge
4 Integrated electronic smart
monitoring system
5 Bleed valve
6 Insulation shells EPP
7 Demineralisation 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
Hardness test-kit to
determine water hardness
Fine filter mesh Stainless steel
Dezincification-resistant
brass
High-quality plastic
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:
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 % *
*non condensing
2 Product Specification Sheet • EN0H-1561GE23 R0219 • Subject to change
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NK300SE-VE - Refilling combination with heatwater treatment unit and demineralisation cartridge
INSTALLATION GUIDELINES
Setup requirements
• Installation in the inlet to the heating system, fasten the
refilling combination (NK300SE-VE) to the wall
• Install in horizontal pipework with discharge connection
respectively cartridge connection directed downwards
• Install at height of at least 610 mm from the ground to
ensure that cartridges can be replaced
• Downstream of the refilling combination
(NK300SE-VE), provide settling section of at least 500
mm before integration in the heating circuit
• The installation may not take place in areas or ducts
where poisonous gases or vapours may be present or
where flooding can occur
• The installation environment should be protected
against frost and ventilated well
Installation Example
• The installation location has to be easily accessible
– Simplified maintenance and cleaning
– Pressure gauge at the pressure reducing valve can
be read off easily
• According to EN 1717 in direction of flow, first install the
heatwater treatment unit (VE300S) and directly after it,
the refill combination (NK300SE-VE)
• The national installation regulations must be observed
during the assembly
• Requires regular maintenance in accordance with
EN 806-5
• In order to avoid flooding, it is recommended to arrange
a permanent, professionally dimensioned wastewater
connection
Fig. 1 Standard installation example for the refilling combination
TECHNICAL CHARACTERISTICS
kvs-Values
Connection sizes:
kvs-value (m3/h): 0.30
* Compulsory testing in sizes R 1/2"
1
/2"
Product Specification Sheet • EN0H-1561GE23 R0219 • Subject to change 3
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NK300SE-VE - Refilling combination with heatwater treatment unit and demineralisation cartridge
DIMENSIONS
Overview
L
l1
h1
R
3
h
H
2
h
D
Parameter Values
Connection size: R
1
/2"
Dimensions: H 536.9
h
1
h
2
h
3
76
460.9
136
L 450
I
1
158.1
D 40
Weight: kg 6
Note: All dimensions in mm unless stated otherwise.
ORDERING INFORMATION
The following tables contain all the information you need to make an order of an item of your choice. When ordering, please
always state the type, the ordering or the part number.
Options
1
The valve is available in the following sizes:
/2".
• standard
- not available
Connection type: Standard version with threaded connection R1/2" and 200 m filter in
the refilling combination
Accessories
Description Dimension Part No.
TKA295 Test kit
Analogue pressure measuring device with differential pressure display. With case
and accessories, ideal for inspection and maintenance of backflow preventer type
BA.
WS300NK Maintenance Set
Maintenance set for refilling combination NK300 for use with TK295 resp. TKA295
NK300SE-VE-1/2A
•
TKA295
WS300NK
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NK300SE-VE - Refilling combination with heatwater treatment unit and demineralisation cartridge
Spare Parts
Refilling combination NK300SE-VE, from 2016 onwards
Overview
1
4
Description Dimension Part No.
5
1 Cartridge insert complete
1
/2" 0903733
2 Check valve
1
6
3 Valve insert complete
4
/2" 0904138
1
/2" D04FMA-1/2
4 Union seal washer (10 pcs.)
1
/2" 0901443
5 Blanking plug with O-ring R1/4" (5 pcs.)
1
/2" - 2" S06K-1/4
2
5
5
3
6 Pressure gauge
0 - 10 bar M39K-A10
7 Replacement softening cartridge
Size: 3.5 l P300-LES
7
For more information
homecomfort.resideo.com/europe
Ademco 1 GmbH
Hardhofweg
74821 MOSBACH
GERMANY
Phone: +49 6261 810
Fax: +49 6261 81309
Manufactured for and on behalf of the
Pittway Sàrl, La Pièce 4, 1180 Rolle, Switzerland
by its Authorised Representative Ademco 1 GmbH
EN0H-1561GE23 R0219
Subject to change
© 2019 Resideo Technologies, Inc.
The Honeywell Home trademark is used under
license from Honeywell International Inc.
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