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Revision Notes: Revision A (ECO #C08226) initial release.
Revision B (ECO #C08423) reflects updates made to images and text
as a result of questions/requests from the field.
Revision C (ECO C08857) reflects the update of FIG.'s 4-3 through 4-7
on pages 36 - 38 to encourage the use of Copper or CPVC piping in
illustrated concepts.
Revision D (ECO C09601) reflects the update of Table 4B on page 35.
Revision E (ECO C12077) reflects the update of heat exchanger text
on page 35 and the addition of a notice regarding flow requirements to
piping diagrams on pages 36 - 38.
Revision F (ECO C12515) reflects updates made to FIG. 4-5 and 4-6 on
page 37 per ECR R06020.
Revision G (ECO C13155) reflects updates made to FIG. 4-8 on page
39 and Table 5A on page 41 per ECR R06361.
Revision H (ECO C14497) reflects changes made to Table 3D - Gas
Piping Chart on page 33 (R06621), the update of kit numbers in Table
2D on page 25 (R06853) and the removal of pump sizing information
from page 34 (R06514).
Revision I (ECO C16994) reflects a change in 3-way valve information
on pages 39, 41, 44 and an update of wiring diagrams on pages 62 - 65.
Revision K (CN# 500000696) reflects the update of FIG. 4-8 on page
39.
Revision L (PCP# 3000000249 / CN# 500000347) reflects an update
to the piping diagrams as well as the addition of Table 4C on page 35.
SAP part numbers have been updated.
Revision M (PCP# 3000003954 / CN# 500004068) reflects an update to
the common pipe diameters in Table 4A on page 34.
Revision N (PCP# 3000005238 / CN# 500005983) reflects a correction
to Figure 4-8 on page 39.
Revision P (PCP# 3000007653 / CN# 500007558) reflects the addition
of new venting category information on pages 30 through 32.
Revision R (PCP #3000024417 / CN #500014344) reflects an update to
Table 4A on page 41.
Revision T (PCP #3000031557 / CN #500020650) reflects an update
to Figure 4-8.
Revision U (PCP #3000039246 / CN #500027333) reflects an update
to table 2B.
Revision V (PCP #3000042140 / CN #500030042) reflects an update to
the optional outdoor kit information on pages 14 and 33.
Revision W (PCP #3000043822 / CN #500031533) reflects the addition
of the vertical Directaire kits for the 1802 and 2072 models.
Revision X (PCP #3000044690 / CN #500032479) reflects a general
update to 2021 water heater standards.
Revision Y (PCP #3000047058 / CN #500034438) reflects updates to
the CSA/ANSI standards on page 9.
CPX-I-O_100160928_2000001946_Rev Y
07/21
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