Metal-Fach SD DUO BIO 16, Technical And Operational Documentation

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METAL-FACH Heating Technology
26
Connection of the boiler to a closed heating system
(Installer)
When installing the boiler in a closed heating system, it is important to use elements protecting the system
against overheating, excessive pressure increase and to use a controller regulating the temperature during the
combustion process.
In boilers SD DUO BIO, a copper coil has been installed, which is built into the boiler exchanger. The coil is made
of finned copper pipe.
NOTE!
The completed closed-system central heating installation must meet the requirements of
PN-EN 12828:2006 - Heating installations in buildings and PN-EN 303-5:2012 - Solid fuel
heating boilers with manual and automatic fuel loading.
Part Description
STB
Safety temperature limiter with manual return to
home position
Cooling coil
Cools the installation when the temperature exceeds
97C
o
VST 112 valve
Protects against backfire into the solid fuel feeder by
flooding the fuel in the event of excessive
temperature rise
Pressure expansion vessel Prevention of excessive pressure increase
Safety fittings It includes a safety valve, pressure gauge, air vent
NOTE!
Boilers installed in a closed system must absolutely be equipped with all safety devices.
NOTE!
The cooling coil or cooling valve must be connected to the water mains. The power source
must not be a hydrophore set, as this needs electricity to function properly.