Revision Notes: Revision A (ECO #C07970) initial release.
Revision B (ECO #C08023) reflects changes made to FIG. 6-3 on page
32 for Mass approval and changes made to FIG. 5-3 on page 28.
Revision C (ECO #C08179) reflects the addition of three (3) new vent
manufacturers (pg. 16 - Table 2A).
Revision D (ECO #C08585) reflects edits made to FIG. 4-4 and the
addition of Fixed or Variable Flow Primary in place of Full Flow.
Revision E (ECO #C08841) reflects changes made to #3 on page 42
additional information added to the humidity warning on page 7, along
with references to the Dual Fuel Supplemental Manual.
Revision F (ECO C09629) reflects the update of the AHRI and ASME
logos on page 6 and the update of condensate disposal information and
Figure 8-1 on page 39.
Revision G (ECO C10325) reflects a kit number correction (Neutralizer
kit) and the addition of version 4, software update (pg. 49).
Revision H (ECO C10391) reflects the change in Label and Wiring
diagrams on pages 58 and 59.
Revision I (ECO C11129) reflects changes made to the Ratings (page
6), the Common Venting section, page 18 and (ECR 05455) the addition
of #7 in the Before Locating the Boiler section on page 7.
FB-I-O Rev I
08/12