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9
CHECKLIST SUMMARY
This checklist serves as a summary of the items to be
checked before venting an Air Command 80 furnace into a
masonry chimney. In addition, we recommend that a quali-
fied serviceman use this checklist to perform a yearly
inspection of the furnace venting system.
This checklist is only a summary. For detailed information
on each of the procedures mentioned, see the paragraph
referenced with each item.
This inspection is based upon a draft topical report, “Ma-
sonry Chimney Inspection and Relining”, issued by the Gas
Research Institute. While not yet finalized, we believe this
report represents the best information on this subject which
is currently available.
Yes
Proper Chimney
Termination?
(Check 1)
Line, terminate with
listed vent cap
(Fix 1)
Chimney channel
free of solid and
liquid fuel
appliances?
(Check 2)
Change venting
arrangements
(Fix 2)
Crown in good
condition?
(Check 3)
Rebuild crown
(Fix 3)
and /or Reline
(Fix 4)
Cleanout free of
debris?
(Check 4)
Reline
(Fix 4)
Liner in good
condition?
(Check 5)
Dilution air
available?
(Check 6)
Complete the
installation.
(Check 7)
Reline
(Fix 4)
Reline
(Fix 4)
No
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
CHECK 1 - PROPER CHIMNEY TERMINATION.
A masonry chimney used as a vent for gas fired equipment
must extend at least three feet above the highest point
where it passes through the roof. It must extend at least two
feet higher than any portion of a building within a horizontal
distance of 10 feet. In addition, the chimney must terminate
at least 3 feet above any forced air inlet located within 10
feet. The chimney must extend at least five feet above the
highest connected equipment draft hood outlet or flue
collar.
If the chimney does not meet these termination require-
ments, but all other requirements in the checklist can be
met, it may be possible for a mason to extend the chimney.
If this will not be practical, see Fix 1, page 12.
2' Min.
2' Min.
3' Min.
10' or Less
Wall or
Parapet
Chimney
Rid
g
e
2' Min.
10' or Less
3' Min.
Chimney
Figure 9
Termination 10 Feet Or Less From Ridge,
Wall or Parapet