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Technical information
4.4 Fuel
The boiler is only to be operated with
the fuel stated on the boiler rating plate.
Uno-3 boilers are suitable for the combustion of the
following fuels:
- Heating oil EL in accordance with DIN 51 603 /
SN 181 160 /2 / ÖNorm C 1109
- Heating oil L in accordance with ÖNorm C 1108
- All fuel gases as defined by DVGW process
sheet G 260
4.5 Electrical connection
A qualified technician must install the electrical supply
to the equipment. The electrical circuit diagram is
located in the electrical box.
Applicable only to Austria and Germany:
An electrical circuit diagram is supplied with the boiler
controls.
Please affix the correct connection diagram to the
inside of the terminal cover.
Important!
A main switch must be installed on-site in the supply
line which performs an all-poles cut-out and has a
clearance of at least 3 mm between the open contacts.
Applicable only to Switzerland:
The system-related electrical circuit diagram must be
referred to when making the electrical connection!
4.5.1 Electrical connection of the burner
- The burner must be connected to the boiler with
the standard plug-in connection.
- The burner cable must be shortened so that the
plug-in connection has to be parted to swing out
the burner.
4.6 Flue gas regulator set
The flue gas regulators fitted in each case are listed
on a label on the boiler casing (side section Figure 7,
Pos. 9a).
The installer can change the flue gas regulator set
fitted and thus vary the flue gas temperature within
a specific range.
Even in partial load operation, the flue
gas temperature must not fall below
100 °C.
Inspection
hole
Regulators
Figure 13
