1
Safety Guidelines
1.
Follow the installation instructions.
2.
Use the appliance
• according to its intended use
• in good condition
• with due regard to safety and risk of danger.
3.
Note that the appliance is exclusively for use in the
applications detailed in these installation instructions
(see 2 Technical Data). Any other use will not be
considered to comply with requirements and would
invalidate the warranty.
4.
Please take note that any assembly, commissioning,
servicing and adjustment work may only be carried
out by authorized persons.
5.
Immediately rectify any malfunctions which may
influence safety.
2
Technical Data
Media
Medium:
Connections/Sizes
Connection sizes:
Connection size discharge:
Connection ball valve
backflow preventer:
Pressure values
Inlet pressure:
Outlet pressure:
Preset outlet pressure:
Operating temperatures
Max. operating temperature
medium:
Specifications
Liquid category backflow
preventer BA:
Installation position:
3
Options
For Options visit homecomfort.resideo.com/europe
Drinking water
1
/
" external threads
2
40 mm
1
G
/
"
4
2 - 10 bar
1.5 - 4 bar adjustable
1.5 bar
65 °C
4 (toxic, highly toxic,
tumourigenic, radioactive
materials)
horizontal pipework with
discharge connection
directed downwards
GB
4
Assembly
4.1 Installation Guidelines
•
Install in horizontal pipework with discharge
connection directed downwards
•
The installation may not take place in areas or ducts
where poisonous gases or vapours may be present or
where flooding can occur
•
Requires regular maintenance in accordance with
EN 806-5
•
The installation environment should be protected
against frost and ventilated well
•
The installation location has to be easily accessible
– Simplified maintenance and cleaning
– Pressure gauge at the pressure reducing valve
can be read off easily
•
Provide a straight section of pipework of at least five
times the nominal valve size after the pressure
reducing valve (in accordance with EN 806-2)
•
The refilling combination has an integrated strainer -
no separate strainer necessary
– Refilling combination is protected against
malfunction and corrosion damage resulting from
ingress of foreign bodies, e.g. welding beads,
sealing materials, metal cuttings and rust
•
The national installation regulations must be observed
during the assembly
•
In order to avoid flooding, it is recommended to
arrange a permanent, professionally dimensioned
wastewater connection
4.2 Assembly instructions
To avoid stagnating water the refilling combination
(NK300S) must be attached as directly as possible to
the service pipe!
The rules of the drinking water regulation must be
considered during the assembly!
Fasten the plastic sealing plugs manually only
(without tools)
1.
Thoroughly flush pipework
2.
Install refilling combination
• Install in horizontal pipework with discharge
connection directed downwards
• Note flow direction (indicated by arrow)
• Install without tension or bending stresses
3.
Provide a straight section of pipework of at least five
times the nominal size after the refilling combination
4.
Attach drain pipe to discharge connection (plastic pipe
40 mm)
2
MU1H-1556GE23 R0420