Vermont Casting BHDT36 Vent Opening Ñ Combustible Wall Fig, Vertical Sidewall Installation, Step

VERTICAL SIDEWALL INSTALLATION

STEP 1

Maximum Length	#8
	SCREWS(2)
12" (294mm)	ADJUSTABLE
#8
	ZERO CLEARANCE
SCREWS(2)
	SLEEVE

Locate vent opening on the wall. It may be necessary to first position the fireplace and measure to obtain hole location. Depending on whether the wall is combustible or non- combustible, cut opening to size.

(For combustible walls first frame in opening).

VERTICAL SIDEWALL APPLICATION

#8

SCREWS(2)

ADJUSTABLE ZERO

CLEARANCE SLEEVE

FIRESTOP

STEP 3

Fig. 20

Vent Opening Ñ

Combustible Wall Fig. 18

(240mm)

9-3/8"

9-3/8" (240mm)

(framing detail)

Vent Opening Ñ

Noncombustible Wall Fig. 19

7-1/2" (190mm)

COMBUSTIBLE WALLS (Fig. 18): Cut a 9-3/8"H x 9-3/8"W (240

mmx 240 mm) hole through the exterior wall and frame as shown. NON-COMBUSTIBLE WALLS (Fig. 19): Hole opening must be

7.5" (190 mm) in diameter.

STEP 2

(Fig. 21) Apply a bead of high temperature sealant to the inner and outer flue collars of the fireplace and using appropriate venting component(s) attach to fireplace with three (3) screws. Follow with the installation of the inner and outer elbow. Again secure joints with three (3) sheet metal screws. Wipe off any excess high temperature sealant.

BEAD OF SEALANT

Fig. 21

STEP 4

(Fig. 22) Measure the horizontal length requirement including a 2" (50mm)overlap, i.e. from the elbow to the outside wall finish plus 2" (or the distance required if installing a second 90º elbow).

Fig. 20. Measure wall thickness and cut adjustable zero clearance sleeve parts to proper length (MAXIMUM 12"/ 305mm). Adjust sleeve to minimum (9-3/8" x 9-3/8") and attach to firestop with #8 sheet metal screws (supplied). Install firestop assembly.

Zero clearance sleeve is only required for combustible walls.

Always install horizontal venting on

alevel plane.

xX

Fig. 22

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