Lochinvar 45 Vertical Vent Termination Clearances, 2 VentTermination from Peaked Roof 10 or

Installation & Service Manual

2Venting (continued)

Vertical Vent Termination Clearances

10' OR LESS 10' OR LESS

10' OR LESS	CHIMNEY
	2' MIN	2' MIN

3' MIN

2' MIN

3' MIN

RIDGE

	CHIMMEY WALL OR	CHIMMEY
	PARAPET
Figure 2-2_Vent Termination from Peaked Roof 10' or	Figure 2-4_Vent Termination from Flat Roof 10' or Less
Less from Ridge	from Parapet Wall

		10' OR MORE
MORE THAN 10'
10'		3'
2' MIN	CHIMNEY
RIDGE
	3' MIN
		NOTE:
		NO HEIGHT ABOVE
		PARAPET REQUIRED
		WHEN DISTANCE
		FROM WALLS OR
		PARAPETS IS MORE
		THAN 10'.
	WALL OR	CHIMNEY
	PARAPET

Figure 2-3_Vent Termination from Peaked Roof More	Figure 2-5_Vent Termination from Flat Roof More Than
	10' from Parapet Wall
than 10' from Ridge

The vent terminal should be vertical and exhaust outside the building at least 2 feet (0.61m) above the highest point of the roof within a 10 foot (3.05m) radius of the termination. The vertical termination must be a minimum of 3 feet (0.91m) above the point of exit.

A vertical terminal less than 10 feet (3.05m) from a parapet wall must be a minimum of 2 feet (0.61m) higher than the parapet wall.

The vent cap should have a minimum clearance of 4 feet (1.22m) horizontally from and in no case above or below, unless a 4 foot (1.22m) horizontal distance is maintained from electric meters, gas meters, regulators and relief equipment.

The venting system shall terminate at least 3 feet (0.9m) above any forced air inlet within 10 feet (3.05m).

The venting system shall terminate at least 4 feet (1.2m) below, 4 feet (1.2m) horizontally from, or 1 foot (30cm) above any door, window or gravity air inlet into any building.

Do not terminate the vent in a window well, stairwell, alcove, courtyard or other recessed area. The vent can not terminate below grade. The bottom of the vent terminal shall be located at least 12 inches (30cm) above grade.

To avoid a blocked vent condition, keep the vent cap clear of snow, ice, leaves, debris, etc.

Flue gases will form a white plume in winter. Plume could obstruct window view.

Flue gas condensate can freeze on exterior surfaces or on the vent cap. Frozen condensate on the vent cap can result in a blocked vent condition. Flue gas condensate can cause discoloration of exterior building surfaces. Adjacent brick or masonry surfaces should be protected with a rust resistant sheet metal plate.

NOTICE	Examine the venting system at least once a
	year. Check all joints and vent pipe
	connections for tightness. Also check for
	corrosion or deterioration. Immediately
	correct any problems observed in the
	venting system.	15