Vermont Castings 360DVSR Operations Instructions download pdf (Page 19)

Vermont Castings, Majestic Products, 360DVS Series

10002547

When it is not possible to meet required vent terminal

clearances of 12 in. (305 mm) above grade level, we

recommend using a starter kit. It allows installation

depth down to 7 in. (178 mm) below grade level.

Measure 7 in. (178 mm) from the center of the

horizontal vent pipe as it penetrates through the wall.

NOTE: Ensure sidewall venting clearances are

observed. If venting system is installed

below ground, we recommend a window

well with adequate and proper drainage.

If installing a snorkel, a minimum 24 in. (610 mm)

vertical rise is necessary. The maximum horizontal run

with 24 in. (610 mm) vertical pipe is 36 in. (915 mm).

The measurement is taken from the collar of the

fireplace (or transition elbow) to the face of exterior

wall. See sidewall vent graph, page 15, for extended

horizontal runs if the vertical exceeds 24 in. (610 mm).

1. Establish vent hole through the wall (Fig. 24).

2. Remove soil to depth of about 16 in. (406 mm)

below base of snorkel. Install window well (not

supplied). Refill hole with 12 in. (305 mm) of coarse

gravel, leaving a clearance of about 4 in. (102 mm)

below snorkel (Fig. 28).

3. Install vent system.

4. Ensure a watertight seal is made around the vent

pipe coming through the wall.

Below Grade Installations

Universal snorkel

Do not backfill around the snorkel. A

clearance of at least 4” (102 mm) must

be maintained between the snorkel and

the soil.

If the foundation is recessed, use recess brackets (not

supplied) for securing lower portion of the snorkel.

Fasten brackets to wall first, then secure to snorkel

with self drilling #8 x 1/2 sheetmetal screws. It will be

necessary to extend vent pipes out as far as protruding

wall face (Fig. 30).

GRAVEL

DRAIN

FIRESTOP

FOUNDATION WALL

WINDOW WELL

7DVSKS

(SNORKEL)

(GROUND)

24"

(608 mm)

MINIMUM*

7" PIPE

SCREWS

MINIMUM

4" (102 mm)

CLEARANCE

ZERO CLEARANCE

SLEEVE IF REQUIRED

A minimum of 24"

(608 mm)

vertical pipe must be installed when

using the 7DVSKS/7TDVSKS kit.

The 22"

(559 mm) vertical rise

(center to center) of the snorkel may

be included for calculation of

maximum horizontal run.

STEP 6

Use appropriate length of pipe section—telescopic or

fixed—and install. The 20” (508 mm) section of pipe

which goes through the wall is packaged with the

7DVSK starter kit, and can be cut to suit if necessary.

Seal vent pipe and firestop gaps with high temperature

sealant to restrict cold air being drawn in around the

fireplace.

STEP 7

Apply high temperature sealant to 4” (102 mm) and

7” (178 mm) collars, or to the termination 1” (25 mm)

away from the crimped end. Guide 4” and 7” collars of

vent terminations into respective vent pipes. Double

check vent pipes to see that they overlap the collars by

2” (51 mm). Secure termination to the wall with screws

provided, and caulk around the wall plate to

weatherproof.

One alternative to screwing the termination directly to

the wallis the use of expanding plugs or an approved

exterior construction adhesive.

Or, you may attach the termination with screws through

the inner body into the 4” (102 mm) vent pipe; however,

for this method, you must extend the 4” (102 mm) pipe

approximately 6” (153 mm) beyond the outer face of

the wall.

Support the horizontal pipes with metal

pipe straps every 3’ (91 cm).

5. Apply high-temperature sealant caulking (supplied)

around 4 in. and 7 in. snorkel collars.

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

7. Level the soil so as to maintain a 4 in. (102 mm)

clearance below snorkel (Fig. 29).

Fig. 29 Below grade installation

CFM139

Watertight seal

around pipe

Foundation recess

Sheet metal screws

Wall screws

Snorkel

Fig. 30 Snorkel installation/ recessed foundation

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 38 39

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Vermont Castings 360DVSR Operations Instructions Page 19

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