Page 75The pump vacuum should not exceed a maximum of 0.4 bar. Above this value,gas is released from the oil thus leading to burner lockout.The Warmflow Professional range of Agentis boiler appliances is supplied with anoil supply kit which provides a number of the principal components and fittings foroil supply installation. Note that in some installation situations additionalcomponents and fittings may be required.7.2 Instructions for the use of Bio FuelTo ensure consistency, the fuel supplier must be able to demonstrate compliancewith a recognised Quality Control and management system to ensure highstandards are maintained within the storage, blending and delivery processes.The installation oil storage tank and its ancillaries must also be prepared BEFOREliquid Bio fuel is introduced. Checks and preparation should include;1. For new installations, make sure that all materials and seals in the oil storageand 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 asecondary filter for protecting the burner from contamination. The filtration must beto the specification detailed in the technical manual supplied with the burner2. If an existing oil storage tank is to be used then in addition to the materialschecks as detailed above, it will be essential that the tank is first inspected forcondition and checked for water or other contamination. Warmflow stronglyrecommend that the tank is cleaned and oil filters replaced prior to Bio fueldelivery. If this is not completed then due to the hydroscopic nature of Bio fuel, itwill effectively clean the tank, absorb any water present which in turn will result inequipment failure that is not covered by the manufacturer's warranty.3. Depending on the capacity of the oil storage tank and oil usage, fuels mayremain static within the tank for some considerable time and so Warmflowrecommends that the oil distributor is consulted regarding the appropriate use ofadditional Biocides within the fuel to prevent microbial growth from occurringwithin the tank.The Department of Transport suggest when using fuels with a bio fuel contentwithin “Stationary Equipment” that the content of tanks is turned every six monthsor in any event no less than every twelve months to help prevent blockages tofilters. Warmflow suggests that fuel suppliers and or service companies arecontacted for guidance on fuel storage. The extract detailed above referencingSection 4 – Composition, note 8 of BS2869 should also be considered, andspecial attention should be applied to dual fuel applications where oil may bestored for long periods of time.
