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The installed sidewall vent cap assembly may be paint ed to match
the exterior color. The opening through the wall for instal la tion of
the sidewall vent cap must provide an air space clearance of
2 inches (5.1 cm) around the flue pipe. The diameter of the opening
for installation of the sidewall cap will be 4 inches (10.2 cm) larger
(minimum) than the nominal diameter of the in stalled vent pipe to
the sidewall cap.
The sidewall cap is installed from the outside and mounted to the
wall with four screws or wall anchors. Seal under the screw heads
with caulking. Install the screen assembly using the stainless steel
screws provided in the kit. Install the Category IV vent pipe from
the appliance to the vent cap. The installed vent pipe must protrude
at least 2 inches (5.1 cm) into the screen area beyond the thimble
portion of the sidewall cap assembly. See detailed instructions
packed with the sidewall vent kit.
Follow all requirements in the General Category IV Venting
sections for vent ing flue products to the outdoors. See the
Combustion and Ventilation Air Requirements section to ensure
that adequate combustion and ventilation air is supplied to the
equipment room. All other general installation requirements must
be followed.
LOCATION OF A SIDEWALL
VENT TERMINATION
Follow all General Category IV Vent Termination Clearances.
3' MIN.
4' MIN.
10' MIN.
HORIZONTALLY
FIG. 19 Sidewall Venting Installation with Clearances from
Vent Cap
The vent cap shall terminate at least 3 feet (0.91 m) above any
forced air inlet within 10 feet (3.05 m) horizontally.
The vent cap MUST NOT terminate below a forced air intake at
any distance.
The vent shall terminate at least 4 feet (1.22 m) below, 4 feet
(1.22 m) horizontally from or 1 foot (0.30 m) above and 2 feet (0.60
m) horizontally from any door, window or gravity air inlet to the
building.
The sidewall vent termination must be at least 8 feet (2.4 m)
horizontally from any combustion air intake located above the
sidewall termination cap.
Do not terminate the vent in a window well, stairwell, alcove,
courtyard or other recessed area. The vent cannot terminate below
grade.
The vent shall not terminate directly above a public walkway due
to the nor mal formation of water vapor in the combustion process.
Horizontal ter mi na tions must not be located over areas of
pedestrian or vehicular traffic.
The vent system shall terminate at least 1 foot (0.30 m) above
grade, above normal snow levels and at least 7 feet (2.13 m) above
grade when located ad ja cent to public walkways.
The vent terminal shall not be in stalled closer than 3 feet
(0.91 m) from an inside corner of an L-shaped struc ture.
The vent cap should have a minimum clearance of 4 feet
(1.22 m) hor i zon tal ly from and in no case above or below, unless
a 4-foot (1.22 m) hor i zon tal distance is maintained from elec tric
meters, gas meters, regulators and relief equipment.
Flue gas condensate can freeze on ex te ri or walls or on the vent
cap. Frozen condensate on the vent cap can result in a blocked
flue condition. Some discoloration to exterior building surfaces
can be expected. Adjacent brick or masonry surfaces should be
protected with a rust resistant sheet metal plate.
The sidewall vent system must use the sidewall vent cap kit
provided by the appliance manufacturer for installation on a
sidewall termination.
The sidewall vent cap MUST be purchased as a kit from the
appliance man u fac tur er to ensure proper operation. Lo cal ly
purchased or fabricated sidewall vent caps should not be used.
DIRECT VENT AND
INTELLI-VENT SYSTEMS
Direct Vent and Intelli-Vent Systems are installed with a Category
IV flue and a separate combustion air pipe to the outdoors. The
Direct Vent System terminates both the flue and combustion air
inlet in the same pressure zone. The Intelli-Vent System terminates
the flue and combustion air inlet in dif fer ent pressure zones. The
flue outlet and combustion air intake may terminate with either a
sidewall or a rooftop termination.
Follow all requirements in the General Category IV Venting
sections for proper installation and venting of flue products
vertically or horizontally to the outdoors. All other general
in stal la tion requirements must be fol lowed.
The Direct Vent and Intelli-Vent Sys tems require the installation of
an additional pipe to supply combustion air from outdoors directly
to the ap pli ance.