Below Grade Installation - Vermont Castings WDV500NTSC Installation And Operating Instructions Manual

Direct vent gas fireplace

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Table Of Contents

Table of Contents

WDV Series Gas Fireplace

Example:

Elbow 1 =

Elbow 2 =

Elbow 3 =

Elbow 4 =

Total Angular Variation =

12"

Minimum

Figure 17 -

Maximum Elbow Usage

BelOW GraDe InstallatIOns

When it is not possible to meet the required vent terminal

clearances of 12" above grade level, a snorkel kit is recom-

mended. It allows installation depth down to 7" (178 mm)

below grade level. The 7" (178 mm) is measured from the

center of the horizontal vent pipe as it penetrates through

the wall.

ensure that sidewall venting clearances are observed.

If venting system is installed below ground, we recom-

mend a window well with adequate and proper drainage

to be installed around the termination area.

If installing a snorkel, a minimum 12" vertical rise is neces-

sary. The maximum horizontal run with the 12" vertical pipe

is 36". This measurement is taken from the collar of the

fireplace (or transition elbow) to the face of the exterior wall.

See the Sidewall Venting Graph for extended horizontal

run if the vertical exceeds 12".

1. Establish vent hole through the wall.

2. Remove soil to a depth of approximately 16" below base

of snorkel. Install drain pipe. Install window well (not

supplied). Refill hole with 12" of coarse gravel leaving

a clearance of approximately 4" below snorkel. Figure

3. Install vent system.

4. Ensure a watertight seal is made around the vent pipe

coming through the wall.

5. Apply high temperature sealant caulking (supplied)

around the 5" and 8" snorkel collars.

6. Slide the snorkel into the vent pipes and secure to the

wall.

90°

45°

90°

270°

FP1180

max bends

7. Level the soil so as to maintain a 4" clearance below

snorkel. Figure 18

Screws

Firestop

12"

Minimum

FP2134

If the foundation is recessed, use recess brackets (not

supplied) for securing lower portion of the snorkel. Fasten

FP2134

brackets to wall first, then secure to snorkel with self drill-

below grade install

ing #8 x 1/2" sheet metal screws. It will be necessary to

extend vent pipes out as far as the protruding wall face.

Figure 19

Foundation

Recess

Watertight Seal

Around Pipe

Figure 19 -

Snorkel Installation, Recessed Foundation

FP1966

snorkel

•

Do not back fill around snorkel.

•

a clearance of at least 4" must be

maintained between the snorkel and

the soil.

VentInG InstallatIOn

Minimum

4" Clearance

Ground

Window

Well

Gravel

Drain

Foundation Wall

Figure 18 -