Vermont Casting BHDR36 Vent Opening Ñ Combustible Wall, Vent Opening Ñ Noncombustible Wall, Step

VENT SIDEWALL INSTALLATION

*IMPORTANT* Minimum clearance between vent pipes and combustible materials is one (1") inch (25 mm) on bottom, sides and top.

Vent Starter Kit 7TDVSK, plus Transition Elbow 7TDVRT90 must be used in Vertical Sidewall installations. The 4" pipe must be centred inside the 7" pipe coming off the 7TDVRT90 transition elbow.

STEP 1

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. Fig. 48 or 50.

(For combustible walls first frame in opening. Fig. 49).

Vent Opening Ñ

Combustible Wall

(240mm)

9-3/8"

9-3/8" (240mm)

Fig. 48 (framing detail)

Fig. 49

Vent Opening Ñ

Noncombustible Wall

7-1/2" (190mm)

Fig. 50

COMBUSTIBLE WALLS (Fig. 48): Cut a 9-3/8"H x 9-3/8"W (240

mmx 240 mm) hole through the exterior wall and frame as shown (Fig. 49).

NON-COMBUSTIBLE WALLS (Fig. 50): Hole opening must be

7.5" (190 mm) in diameter.

STEP 2

Fig. 51. Measure wall thickness and cut adjustable zero clearance sleeve parts to proper length (MAXIMUM 12"). 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.

	Maximum Length	#8
		SCREWS(2)
	12" (294mm)	ADJUSTABLE
	#8
		ZERO CLEARANCE
	SCREWS(2)
		SLEEVE
	#8
	SCREWS(2)
Fig. 51	ADJUSTABLE ZERO
	CLEARANCE SLEEVE

FIRESTOPFIRESTOP

STEP 3

(Fig. 52) 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.

ENSURE PIPES
ARE
X
7TDVRT90	Fig. 52
BEAD OF
SEALANT
(IF NECESSARY)

STEP 4

(Fig. 53) Measure the horizontal length requirement plus 1-1/2" overlap, i.e. from the elbow to the outside wall finish plus 1-1/2" (or the distance required if installing a second 90º elbow).

	X
Always
install
horizontal
venting
on a	Fig. 53
level
plane.

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