2
A02217
Fig. 1 -- Model BW4/BW5
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.
14. Purging the heating system of air and gases when first
putting the boiler into service is critical for proper
circulation and quiet performance. Once the air and gases
are purged, for boiler installations using float type vents,
the air vents should be closed for normal operation. If air
is heard or noticed by loss of heat, purge the system and
open the vents for a short period of time.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death and or property damage.
Use only number 1 or number 2 fuel oil having commercial
standard grade CS 12--48. Do not use gasoline, kerosene,
crankcase oil, or any oil containing gasoline.
!
WARNING
OPERATION AND WARRANTY HAZARD
Failure to follow this warning could result in personal
injury, death and or property damage.
This boiler has been designed for residential installations. If
used for commercial applications, all jurisdictional
requirements must be met. This may require wiring and/or
piping modifications. The manufacturer is not responsible
for any changes to original design.
!
WARNING
BW
4
/BW
5
