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B - Chimney
C - Vent
D - Positive block off plate
E - Tee
Short rise installation-wall outlet
When terminating the exhaust system under the houses eaves, (Fig. 17) the following
requirements shall be fulfilled:
- in selecting locations for appliance and vent, take into consideration the NPFA 211 6-3.5
rule for distance of exit terminal from window and openings;
- run the vent vertically up the wall, ensuring to maintain a minimum of 3" clearance
between the wall and vent;
- a wall band must be installed just above the tee and at least every 6' of vent rise or, if the
rise is inferior, at the end of the vertical run;
- after a rise of at least 5' (1.5 m), install a 90° elbow aimed out from the building wall;
- attach a 45° elbow to the 90° elbow, aiming the second elbow down toward the ground.
Terminate the vent with a collar with screen fastened to the 45°elbow;
- the end of the vent pipe system must be at least twelve inches (12") from the wall and 24"
below the eave. This configuration will help prevent blockage of vent by snow drifts. Also the
minimum vertical run of 5 feet (1.5 m) ensures the ventilation of the exhaust in the event of
a power failure, and allow for easier cleaning through cleanout on tee.
Warning!
• Certain local code restrictions may apply.
• Check with Local Officials first before installing.
• Strictly observe the PL Vent manufacturer's safety specifications when using wall
pass through.
• Install vent at clearances specified by the vent manufacturer.
• Double wall PL vent requires a minimum clearance to combustibles according to the
manufacturer's safety specifications and the use of listed wall thimble, fire stop or
roof flashing where applicable.
• Do not place joints within wall pass throughs.
Ensure that all installation work is carried out to professional standards.
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