Technical data

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7.5 Instructions for the use of Bio Fuel
To ensure consistency, the fuel supplier must be able to demonstrate compliance
with a recognised Quality Control and management system to ensure high
standards are maintained within the storage, blending and delivery processes.
The installation oil storage tank and its ancillaries must also be prepared BEFORE
liquid Bio fuel is introduced. Checks and preparation should include;
1. For new installations, make sure that all materials and seals in the oil storage
and supply line to the burner are compatible with Bio fuels. For all installations,
there must be a good quality bio compatible oil filter at the tank and then a
secondary filter for protecting the burner from contamination. The filtration must be
to the specification detailed in the technical manual supplied with the burner
2. If an existing oil storage tank is to be used then in addition to the materials
checks as detailed above, it will be essential that the tank is first inspected for
condition and checked for water or other contamination. Warmflow strongly
recommend that the tank is cleaned and oil filters replaced prior to Bio fuel
delivery. If this is not completed then due to the hydroscopic nature of Bio fuel, it
will effectively clean the tank, absorb any water present which in turn will result in
equipment failure that is not covered by the manufacturer's warranty.
3. Depending on the capacity of the oil storage tank and oil usage, fuels may
remain static within the tank for some considerable time and so Warmflow
recommends that the oil distributor is consulted regarding the appropriate use of
additional Biocides within the fuel to prevent microbial growth from occurring
within the tank.
The Department of Transport suggest when using fuels with a bio fuel content
within “Stationary Equipment” that the content of tanks is turned every six months
or in any event no less than every twelve months to help prevent blockages to
filters. Warmflow suggests that fuel suppliers and or service companies are
contacted for guidance on fuel storage. The extract detailed above referencing
Section 4 – Composition, note 8 to BS2869:2010 should also be considered, and
special attention should be applied to dual fuel applications where oil may be
stored for long periods of time.
4. The burner must be set according to the appliance application and
commissioned checking that all combustion parameters are as recommended in
the appliance technical manual.
5. Warmflow recommends that the in line and burner oil pump filters are inspected
and if required replaced frequently during burner use, before the burner start up
following a long period of discontinued operation and even more frequently where
contamination has occurred. Particular attention is needed when inspecting and
checking for fuel leakages from seals, gaskets and hoses.