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Revision Notes: Revision 3 (KB-USER-03) reflects
the addition of the Dungs information to the manual.
Revision 4 (ECO #C02545) reflects changes made
to the “Check Air Piping” section on page 6 along
with the removal of Models 399 - 500 and the
addition of references to periodic cleaning of screens
in vent terminations.
Revision 5 (ECO #C02940) reflects changing 0° to
32°F under the Night Setback Times section on page
13.
KB-USER-05
1/09