Install Instructions

Revision Notes: Revision A (ECO #C07390) initial release.
Revision B (ECO C09691) reflects the update of AHRI and
ASME logos on pages 8 and 9.
Revision C (ECO C12077) reflects the update of ignition timing
information on pages 40, 43, 61 and 63 as well as the update
of heat exchanger information on page54.
Revision D (ECO C12972) reflects the addition of the CSA
Low Lead Content logo.
Revision E (ECO C13163) reflects the addition of the Line
Voltage Connections section on page 38 per ECR R06420.
Revision F (ECO C16918) reflects the update of water volume
in the ratings tables on pages 8 and 9 and the correction of
Table 3D on page 24 for gas pipe sizing (R07763).
Revision G (PCP# 3000002766 / CN# 500003005) reflects a
correction to images 7-1 through 7-4 on pages 49 through 52.
SAP Numbers have been updated.
Revision H (PCP# 3000006579 / CN# 500006677) reflects
the addition of new venting category information on pages 20
through 21.
Revision J (PCP #3000021634 / CN #500011858) reflects
changes made to water chemistry information on pages 4, 29,
33-37, 48-54, 56-57, and 60.
Revision K (PCP #3000030852 / CN #500020656) reflects an
update to all piping diagrams and the addition of the notice on
page 56.
Revision L (PCP #3000033919 / CN #500022621) reflects
the input rates and output rates are revised to match
AHRI rounding and comply with Energy Star turndown rate
requirements.
Revision M (PCP #3000037705 / CN #500025906) reflects
an update to the Figure 5-10, ladder diagram, and connection
diagram
Revision N (PCP #3000038599 / CN #500026731) reflects an
update to the venting warnings on pages 16 and 22 as well as
the addition of Figure 2-5.
Revision P (PCP #3000042140 / CN #500030042) reflects an
update to the optional outdoor kit information on pages 22-23.
Revision R (PCP #3000043534 / CN #500031265) reflects an
update to FIG. 2-7 and the addition of Table 8A.
Revision T (PCP #3000045219 / CN #500032730) reflects an
update to FIG. 2-7 and Table 2B.
CBX-CWX-I-S_100160893_2000001309_Rev T
04/21