980433 Rev 11 - 3/23
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury, or
loss of life. For assistance or additional information, consult a qualified installer, service agency or the gas
supplier. This boiler requires a special venting system. Read these instructions carefully before installing.
!
BSI Series
Gas-Fired Natural Draft Steam Boilers
INSTALLATION, OPERATING and SERVICE
INSTRUCTIONS
TO THE INSTALLER:
Affix these instructions on or adjacent to boiler.
Provide model number and serial number when
seeking information and support.
TO THE CONSUMER:
Retain these instructions for future reference.
Contact heating contractor for all issues and support.
9902339
Models:
• BSI069
• BSI103
• BSI138
• BSI172
• BSI207
• BSI241
• BSI276
PROTECT YOUR INVESTMENT
REGISTER YOUR WARRANTY AT
VELOCITYBOILERWORKS.COM