W415-0973 / B / 08.28.13
21
IOM
9.2 IN
CANADA
9.3 IN UNITED STATES
H14.1
18" (457mm) MIN.
ROOF TERMINATION
EXHAUST
FIGURE 10 - VERTICAL VENTING
MOISTURE IN THE FLUE GASES CONDENSES AS IT LEAVES THE TERMINAL. THIS MOISTURE
CAN FREEZE ON EXTERIOR WALLS, ON SOFFITS, AND OTHER NEARBY OBJECTS. SOME
DISCOLORATION IS TO BE EXPECTED; HOWEVER, IMPROPER LOCATION OR INSTALLATION CAN
CAUSE STRUCTURAL OR EXTERIOR FINISH DAMAGE TO THE BUILDING.
CAUTION
!
!
Caulk all cracks, seams or joints within a 6 foot (1.8m) radius of the termination.
Do not terminate under a deck unless there is adequate clearance to prevent damage from the
fl
ue gases.
A termination may be located at the end of a patio deck. Piping running beneath the deck must be suitably
insulated and suspended in a manner to prevent condensate from collecting and freezing.
Do not locate the terminal on the side of the building facing the prevailing winter winds.
FIGURE 9 - PERISCOPED VENT DETAIL
INTAKE
EXHAUST
GRADE
*3"
(76mm)
MIN.
12"
(305mm)
MIN.
12"
(305mm)
MIN.
*18" (457mm) MIN. FOR COLD
CLIMATES (SUSTAINED 0°F (-18°C)
FOR 24 OR MORE CONSECUTIVE
HOURS
H14.2A
In addition to the general guidelines, in Canada, the vent exhaust shall not terminate:
• Directly above a paved sidewalk or paved driveway which is located between two single-family dwellings
and serves both dwellings;
• Less than 7 feet (2.1m) above a paved sidewalk or paved driveway located on public property;
• Within 6 feet (1.8m) of a mechanical air supply inlet to any building;
• Above a meter/regulator assembly within 3 feet (.91m) horizontally of the center line of the regulator;
• Within 3 feet (.91m) of any service regulator vent outlet;
• Less than 12” (305mm) above grade level or anticipated snow level;
• Within 12” (305mm) of any door, window, or non-mechanical air supply inlet to any building;
• Within 12” (305mm) of the combustion air inlet of any other appliance;
• Underneath a veranda, porch or deck, unless (a) the veranda, porch or deck is fully open on a minimum
of two sides beneath the
fl
oor, and (b) the distance between the top of the vent termination and the
underside of the veranda, porch or deck is greater than 12” (305mm).
In addition to the general guidelines, in the United States, the vent exhaust shall be installed in accordance
with the following:
•
The clearance from the bottom of the terminal to grade shall be 12” (305mm).
•
The vent shall not terminate over public walkways or over an area where condensate or vapor could
create a nuisance or hazard.
•
The vent terminal shall be installed 4 feet (1.2m) below, 4 feet (1.2m) horizontally from, or 1 foot (305mm)
above any door, window, sof
fi
t, under eave vent or gravity air inlet to the building.
•
The vent terminal shall have a minimum horizontal clearance of 4 feet (1.2m) from electric meters, gas
meters, regulators and relief equipment.
•
Locate the vent terminal 3 feet (0.91m) above any forced air inlet located within 10 feet (3m). Any fresh air
or make-up air inlet, such as for a dryer or furnace area is considered a forced air inlet.
Summary of Contents for 9500 series
Page 25: ...W415 0973 B 08 28 13 25 IOM FIGURE 14A DIRECT VENT TERMINAL CLEARANCES...
Page 26: ...W415 0973 B 08 28 13 26 IOM IOM FIGURE 14B NON DIRECT VENT TERMINAL CLEARANCES...
Page 55: ...W415 0973 B 08 28 13 55 IOM 23 0 SERVICE HISTORY 43 1...
Page 56: ...W415 0973 B 08 28 13 56 IOM IOM 44 1 24 0 NOTES...
