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Vitoladens appliances are approved for the combus-
tion of low sulphur fuel oil to DIN 51603-EL-1 (max.
sulphur content 50 ppm).
A condensate neutralising system is not required
(according to Code of Practice ATV-DVWK-A 251
[Germany]) when using this low sulphur fuel.
Fuel oil additives
Fuel oil additives are materials that can be used pro-
viding they offer the following characteristics:
■
Improvement of stability during fuel storage.
■
Increase in the thermal stability of the fuel.
■
Reduction of odour development during filling.
!
Please note
Fuel oil additives can create residues and impair
the safe operation of your heating system.
The use of fuel oil additives that leave residues
is not permissible.
Combustion improvers
Combustion improvers are additives for optimising fuel
oil combustion.
Viessmann oil burners do not require combustion
improvers, as these burners operate with clean and
efficient combustion.
!
Please note
Combustion improvers can create residues and
impair the safe operation of your heating sys-
tem.
The use of combustion improvers that leave res-
idues is not permissible.
Biofuels
Biofuels are made from vegetable oil, e.g. sunflower or
rape seed oil.
!
Please note
Biofuels can lead to damage on Viessmann oil
burners.
With boilers built in or after 2012, up to 10 %
added bio-components (FAME) are generally
allowed. Fuel oil must comply with
DIN 51603-6-EL A Bio 10.
If in doubt refer to your local heating contractor.
Ordering fuel oil
Fuel oil quality
5592667