Vermont Casting 43LDVT, 36LDVT 39LDVT manual Vertical Through-the-Roof Installation, Min 610 mm

LDVT Series Direct Vent Gas Fireplace

Vertical Through-the-Roof Installation

1.Locate your fireplace.

2.Plumb to center of the (4” (102 mm) flue collar from ceiling above and mark position.

3.Cut opening equal to 9³⁄₈” x 9³⁄₈” (240 x 240 mm).

4.Proceed to plumb for additional openings through the roof. In all cases, the opening must provide a minimum of 1” (25mm) clearance to the vent pipe, i.e., the hole must be at least 9³⁄₈” x 9³⁄₈” (240 x 240 mm).

5.Place fireplace into position.

6.Place firestop(s) #7DVFS or Attic Insulation Shield #7DVAIS into position and secure. (Fig. 30)

Attic Insulation

Shield

Joist

Ceiling In-	11"	11"	Upper Floor
		(279mm)
stallation	(279mm)
			Joist
			Firestop Spacer
			Nails (4)

CFM100a

Fig. 30 Place firestop spacer(s) and secure.

7.Install roof support (Fig. 31) and roof flashing making sure upper flange of flashing is below the shingles. (Fig. 32)

8.Install appropriate pipe sections until the venting is above the flashing. (Fig. 32)

9.Install storm collar and seal around the pipe.

10.Add additional vent lengths for proper height. (Fig. 33)

Typical Roof Support
	Typical Ceiling Sup-
Application
	port Application
		CFM110
Fig. 31 Roof and ceiling supports.

#8 Sheet Metal Screws (3 per joint)

Sealant Storm Collar

TWL101a

Fig. 32 Roof flashing.

Min.

2' (610 mm)

CFM190

Fig. 33 Minimum termination to roof clearance.

If there is a room above ceiling level, firestop spacer must be installed on both the bottom and the top side of the ceiling joists. If an attic is above ceiling level a 7DVAIS (Attic Insulation Shield) must be installed.

The enlarged ends of the vent section always face downward. (Fig. 32)

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