Goodman AMH8 Service Instructions Manual page 26

PRODUCT DESIGN
Checklist Summary
This checklist serves as a summary of the items to be
checked before venting an 80% furnace into a masonry
chimney. In addition, we recommend that a qualified ser-
viceman 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.
Proper Chimney
Termination?
(Check 1)
Yes
Chimney channel
free of solid and
liquid fuel
appliances?
(Check 2)
Yes
Crown in good
condition
(Check 3)
Yes
Cleanout free of
debris?
(Check 4)
Yes
Liner in good
condition?
(Check 5)
Yes
Dilution air
available?
(Check 6)
Yes
Complete the
installation.
(Check 7)
26
Line, terminate with
No
listed vent cap
(Fix 1)
Change venting
No
arrangements
(Fix 2)
Rebuild crown
(Fix 3)
No
and/or Reline
(Fix 4)
Reline
No
(Fix 4)
Reline
No
(Fix 4)
Reline
No
(Fix 4)
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 col-
lar.
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.
10' or Less
2' Min.
2' Min.
Wall or
Parapet
Chimney
Ridge
Termination 10 Feet Or Less From Ridge, Wall or
Parapet
More than 10'
NOTE: No Height
above parapet
required when distance
Wall or
Parapet from walls or parapet is
more than 10 feet.
More than 10'
Ridge
Termination More Than 10 Feet From Ridge, Wall or
Parapet
3' Min.
10' or Less
2' Min.
3' Min.
Chimney
3' Min.
Chimney
Height above any
roof surface within
10 feet horizontally.
10'
2' Min.
3' Min.
Chimney