Below Grade Installation - Vermont Castings KSTDV500 Installation And Operating Instructions Manual

Kstdv series direct vent gas fireplace

Hide thumbs

Table Of Contents

Table of Contents

VenTInG InSTallaTIon

•

For each 45° elbow installed in the horizontal run, the

length of the horizontal run MUST be reduced by 18"

(457 mm). This does not apply if the 45° elbows are

installed on the vertical part of the vent system.

•

The maximum number of elbow degrees in a system is

270°. Figure 17

Example:

Elbow 1 =

Elbow 2 =

Elbow 3 =

Elbow 4 =

Total Angular Variation =

24" (610 mm)

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 24" vertical rise is neces-

sary. The maximum horizontal run with the 24" 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 24".

1. Establish vent hole through the wall.

73D4125

90°

45°

90°

270°

FP1383

Max bends

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.

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

snorkel. Figure 18

Firestop

24"

(610 mm)

Minimum

FP2134

If the foun-

d a t i o n

FP2134

i s

r e c e s s e d ,

below grade install

u s e r e c e s s

brackets (not

s u p p l i e d )

Foundation

for securing

Recess

lower portion

of the snorkel.

Fasten brack-

ets to wall first,

then secure

Watertight Seal

t o s n o r k e l

Around Pipe

with self drill-

ing #8 x 1/2

sheet metal

Figure 19 -

screws. It will

Snorkel Installation, Recessed Foundation

be necessary

to extend vent

pipes out as far as the protruding wall face. Figure 19

KSTDV Series Gas Fireplace

Screws

Minimum

4" Clearance

Ground

Gravel

Drain

Foundation

Wall

Figure 18 -