10' or Less
Termination 10 Feet Or Less From Ridge, Wall or Parapet
More than 10'
NOTE: No Height
required when distance
from walls or parapet is
more than 10 feet.
More than 10'
Termination More Than 10 Feet From Ridge, Wall or Parapet
2 - A
NY SOLID OR LIQUID FUEL APPLIANCES VENTED
INTO THIS CHIMNEY CHANNEL
Solid fuel appliances include fireplaces, wood stoves, coal fur-
naces, and incinerators.
Liquid fuel appliances include oil furnaces, oil-fired boilers and
oil-fired water heaters.
Appliances which burn propane (sometimes referred to as LP
(liquefied petroleum)) gas are considered gas-fired appliances.
10' or Less
Height above any
roof surface within
10 feet horizontally.
3 - C
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
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 necessary to follow
both Fix 3 and Fix 4.
4 - D
A cleanout (dropleg) must be present such that the upper edge
of the cleanout cover is at least 12 inches below 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 re-
lined (Fix 4). Remove the cleanout cover, and examine the
cleanout for debris. If significant amounts of any of the following
Fuel oil residue
Mortar or sand
Pieces of the tile liner
Rusted pieces of the metallic liner - reline the chimney
5 - L
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 examine the
inside of the elbow or tee at the base of the liner. A small amount
of soot may be considered acceptable, 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 screw-
driver. If the screwdriver perforates the liner, or if the tapping
does not sound like metal hitting metal, the liner must be re-
moved 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