Vermont Casting 43LDVT, 36LDVT 39LDVT Vertical Sidewall Installation Twist Lock Pipe, Step

LDVT Series Direct Vent Gas Fireplace

Vertical Sidewall Installation

Twist Lock Pipe

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 noncombustible, cut opening to size. (Fig. 18)

For combustible walls first frame in opening.

NOTE: When using flex vent, the opening will have to be measured according to the 1/2” (13 mm) rise in 12” (305 mm) vent run.

Combustible Walls: (Fig. 18) Cut a 9³⁄₈”H x 9³⁄₈”W (240 x 240 mm) hole through the exterior wall and frame as shown.

Noncombustible Walls: (Fig. 18) Hole opening must be 7¹⁄₂” (190 mm) in diameter.

Vent Opening for Combustible Wall

9³⁄₈”

(240mm)

Framing

9³⁄₈”Detail (240mm)

Fireplace Hearth

Opening for Noncombustible Wall

7¹⁄₂”

(190mm)

VO584-100

Fig. 18 Locate vent opening on wall.

STEP 2

Measure wall thickness and cut zero clearance sleeve parts to proper length (MAXIMUM 12”/305 mm). As- semble sleeve and attach to firestop with #8 sheet metal screws (supplied). Install firestop assembly. (Fig. 19)

Zero clearance sleeve is only required for combustible walls.

STEP 3

Place fireplace into position. (Fig. 20) Measure the ver- tical height (X) required from the base of the flue collars to the center of the wall opening.

Adjustable	Max. Length
	12” (305mm)
Zero Clearance
Sleeve
	#8 Screws (2)
#8 Screws
(2)
	#8 Screws
	(2)
Firestop
Adjustable Zero Clearance Sleeve	ZCS101

Fig. 19 Adjustable zero clearance sleeve.

X

FP1240

Fig. 20 Vertical height requirement.

STEP 4

Attach the appropriate venting component(s) to the inner and outer flue collars of the fireplace using three

(3)screws. (Fig. 21) Follow with the installation of the inner and outer elbow. Again secure joints with three (3) sheet metal screws.

X

FP1241

Fig. 21 Horizontal length requirement.

14 10007852