Install Instructions

Revision Notes: Revision A (ECO #C05747) initial release. Refl ects
the new model numbers for the Knight XL upgrade.
Revision B (ECO #C06188) refl ects changes made to FIG. 6-10 (ECR
#R03474) remove ghost pipe, changes made to FIG.’s 6-7, 6-9, and
6-11 (R03563) change the direction of the arrows, and edits made to
the ladder and wiring diagrams (ECO #C06158).
Revision C (ECO #C06234) refl ects changes made to the Service
Reminder feature.
Revision D (ECO #C07981) refl ects the layout in InDesign, edits made
ECR04077 - combustible water pipes change from 1” to a 1/4”, changes
made to Table 3B on page 20, ECR03940 - addition of the rope gasket
warning, ECR03740 - changes made to FIG’s 7-1 thru 7-4 pages 46
and 47, changes made to Table 3A on page 18, ECR03727 - 400 - 601
reference applied incorrectly on pages 15 and 16, add O-temp switch.
Revision E (ECO #C09197) refl ects additional information added to the
humidity warning on page 8, edits made to the O-Temp switch defi nition
on page 4, along with updates made to the SMART SYSTEM control
(ECR #R04523).
Revision F (ECO #C09803) refl ects the addition of the new Polypropylene
Vent material section, rearranging the vent section, and the addition of
the AHRI and ASME logos (R05009).
Revision G (ECO #C10143) refl ects updates made to the ignition timing
information.
KBXII-I-O Rev G
04/12