Goodman Amana AMH8 Service Instructions Manual page 27

PRODUCT DESIGN
10' or Less
2' Min.
Ridge
Termination 10 Feet Or Less From Ridge, Wall or
More than 10'
NOTE: No Height
above parapet
Wall or required when distance
Parapet from walls or parapet is
more than 10 feet.
More than 10'
Ridge
Termination More Than 10 Feet From Ridge, Wall
or Parapet
Check 2 - Any solid or liquid fuel appliances vented
into this chimney channel.
Solid fuel appliances include fireplaces, wood stoves,
coal furnaces, and incinerators.
Liquid fuel appliances include oil furnaces, oil-fired boil-
ers and oil-fired water heaters.
Appliances which burn propane (sometimes referred to
as LP (liquefied petroleum)) gas are considered gas-fired
appliances.
2' Min.
3' Min.
Wall or
Parapet
Chimney
10' or Less
2' Min.
3' Min.
Chimney
Parapet
3' Min.
Chimney
Height above any
roof surface within
10 feet horizontally.
10'
2' Min.
3' Min.
Chimney
Check 3 - Chimney Crown Condition.
Damage from condensate usually shows up first in the
crown. If any of the following trouble signs are present,
the condition of the crown is not satisfactory:
a) Crown leaning
b) Bricks missing
c) Mortar missing
d) Tile liner cracked
e) No tile liner
f) Salt staining at mortar joints. (White stains, and
mortar becomes sandy and/or erodes.)
For problems a, b, or c, see Fix 3. If problems d, e, or f
are present, see Fix 4. IMPORTANT: It may be neces-
sary to follow both Fix 3 and Fix 4.
Check 4 - Debris in Cleanout
A cleanout (dropleg) must be present such that the up-
per edge of the cleanout cover is at least 12 inches be-
low the lower edge of the lowest chimney inlet opening.
A chimney without a cleanout could become partially
blocked by debris. If no cleanout is present, the chimney
must be relined (Fix 4).
Remove the cleanout cover, and examine the cleanout
for debris. If significant amounts of any of the following
are found:
• Fuel oil residue
• Bricks
• Mortar or sand
• Pieces of the tile liner
• Rusted pieces of the metallic liner
reline the chimney (Fix 4).
Check 5 - Liner Condition.
If a metal liner is present, it must be checked. It cannot
be assumed that all existing metal liners are correctly
installed and in good condition.
Remove the lowest existing vent connector, and exam-
ine the inside of the elbow or tee at the base of the
liner. A small amount of soot may be considered accept-
able, provided the installer vacuums it away. If rusted
pieces of the liner have collected here, the metal liner
must be removed and replaced (Fix 4).
Next, gently tap the inside of the liner with a Phillips
screwdriver. If the screwdriver perforates the liner, or
if the tapping does not sound like metal hitting metal,
the liner must be removed and replaced (Fix 4).
Remember that all appliances must be vented inside the
liner. Venting one appliance inside the liner and another
appliance outside the liner is not acceptable.
Next, use a flashlight and small mirror to sight up the
liner. B vent must be supported so as to not come into
direct contact with the chimney walls or tile liner. If it
is not, it can probably be rehung so as to be acceptable.
A thimble or fire stop may be helpful here.
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