IV. Venting / Air Intake Piping
A.General Guidelines
1.Vent system installation must be in accordance with these instructions and applicable provisions of local building codes. Contact local building or fire officials about restrictions and installation inspection in your area.
2.The LE®DV Series is designed as a Direct Vent boiler. In this configuration, all air for combustion is supplied directly to the burner from outdoors and flue gases are vented directly outdoors (through wall). See Figures 10 and 11. The LEDV may be
3.For minimum clearances to combustible materials refer to Figure 2.
4.Maximum wall thickness that vent terminal may be installed through is 10 inches.
WARNING
DO NOT locate vent terminal where exposed to prevailing wind. Moisture and ice may form on surfaces around vent termination. To prevent deterioration, surfaces should be in good repair (sealed, painted, etc.).
5.Locate the vent terminal so vent pipe is short and direct, and at a place on the exterior wall that complies with the minimum distances as specified in
Figure 8 and listed below. The vent terminal must be located:
a.Not less than 12 inches above grade plus snow accumulation (as measured to the nearest edge of terminal).
b.Not less than 3 feet to center of terminal above any forced air inlet located within 10 feet.
c.Not less than 1 foot to center of terminal horizontally from any door, window or gravity air inlet.
d.Not less than 7 feet to center of terminal above a public walkway.
e.Not less than 3 feet to center of terminal from an inside corner of an L-shaped structure.
f.Not less than 1 foot from nearest surface of terminal to a roof soffit.
g.Not directly above, or not less than 6 feet horizontally from an oil tank vent or gas meter.
h.Not less than 2 feet from nearest surface of terminal to an adjacent building.
Figure 8: Vent Terminal Location
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