Operating instructions

7. Be sure there is adequate air supply for complete combustion.
8. Follow a regular service and maintenance schedule for efficient and safe operation.
9. Keep boiler area clean and free from combustible materials, gasoline, and other flammable vapors and liquids.
10. Oil Burners are not do-it yourself items. This boiler must be installed and serviced by qualified professionals using combustion test
instruments.
11. Be aware when piping the relief valve that if the system pressure exceeds the safe limit of 30 pounds per square inch, the relief valve will
automatically lift open. Lifting of the relief valve can discharge large quantities of steam and hot water, which may damage the
surroundings. Before installing the relief valve read the manufacturer’s instructions and maintenance section of the manual on relief valves.
12. Installation and sizing of the expansion tank must consider the heating systems total water volume, temperature, boiler initial fill pressure,
and system arrangement. An improperly installed and sized expansion tank may result in frequent lifting of the relief valve or other heating
system problems. For proper installation, sizing, and maintenance of the expansion tank follow the guidelines established by the boiler
manufacturer and the expansion tank manufacturer.
13. Expansion tank performance and life expectancy can be hindered by overfilling the boiler. An initial fill pressure of 10–12 psig is
recommended. For higher fill pressures the expansion tank’s air charge will need to be increased to match the fill pressure. Consult the
manufacturer’s guidelines for sizing and selection.
Fig. 1—Model BW4B/BW5B
A02217
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