Lennox-hearth ELITE VINT-DVS-U User Manual download pdf (Page 14)

Snorkel Terminations

For installations requiring a vertical rise on the exterior of the building,

14-inch and 36-inch tall snorkel terminations are available. When us-

ing a snorkel, the stove can be vented directly out the back. There is a

vent starter collar fastened to the stove (to vent straight out the back),

remove the four screws securing the collar, rotate the collar 180 degrees

and refasten using the same four screws. Make sure the gasket between

the collar and the stove is properly positioned before refastening the

collar. After rotating the collar, it will be positioned horizontally. When

this pipe passes through a wall, a wall thimble - Simpson part number

942or Security™ part number SV4RSM is required. The hole in the wall

for the wall thimble should be 9-1/4” wide by 10-1/4” high. To vent out

the rear wall, add up to a 12” section of pipe and then the snorkel. When

the stove is located in a corner of the room, to vent horizontally ﬁrst

add a 45 degree elbow, then up to a 12” section of pipe and lastly the

snorkel. Installations using a snorkel have no restrictor installed in the

pipe (see Pages 15 and 16 for restrictor positioning). Follow the same

installation procedures as used for standard horizontal terminations. If

the snorkel termination must be installed below grade, (i. e. basement

application), proper drainage must be provided to prevent water from

entering the snorkel. Do not attempt to enclose the snorkel within the

wall, or any other type of enclosure. On vinyl siding, furring strips may

be used to ensure that the snorkel is not recessed into the siding.

Framed Hole: 9-1/4”

Wide by 10-1/4” High

Wall Thimble

Elbow

Termination Cap

A Minimum of 18” Sec-

tion of Pipe

Wall Thimble

Framed Hole:

9-1/4”x 10-1/4”

High

Snorkel

Vertical Vent Installation

Important Notes

1. All vertically terminated vent installations use 6-5/8”x 4” Se-

curity™ Secure Vent™ pipe*.

2. If the vent passes through a ceiling or ﬂoor, a ﬁrestop - Simpson

#963 or Security™ #SV4BF - is required.

3. If the vent passes through the roof, a roof ﬂashing - Simpson

#943 or 943S or Security™ #SV4FA or SV4FB - and storm collar

- Simpson #953 or Security™ #SV4FC - are required.

4. A 1-inch clearance from the vent pipe to combustible materials

must be maintained.

5. A maximum of either two 45º elbows or two 90º elbows may

be used. See diagrams showing allowable offsets.

6. The maximum system height is 30 feet and the minimum is 10

feet.

Pipe Length

Vertical Termination Cap

Storm Collar

Flashing

Roof - Maintain 1”

Clearance to Combustibles

Ceiling Minimum

Framing 10”x 10”

Ceiling Firestop

Figure 20

Figure 21

Figure 22

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