Vermont Casting BHDT36 사용자 설명서

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1.

Locate your fireplace.

2.

Plumb to centre of the (4") collar from ceiling above and
mark position.

3.

Cut opening equal to 9-3/8" x 9-3/8" (240 mm x 240
mm).

4.

Proceed to plumb for additional openings through the
roof. In all cases, the opening must provide a minimum
of 1 inch clearance to the vent pipe, i.e., the hole must
be a minimum of  9-3/8" x 9-3/8" (240 mm x 240 mm).

5.

Place firestop(s) 7DVFS into position and secure. (Fig.
54)

6.

Install roof support (Fig. 52) and roof flashing making
sure upper flange of flashing is below the shingles.
(Fig. 55)

7.

Install appropriate pipe sections until above the flash-
ing. (See Fig. 53 for #'s 7, 8 and 9).

8.

Install storm collar and seal around the pipe.

9.

Add additional vent lengths for proper height.

10. Apply high temperature sealant to 4" and 7" collars of

vent termination and  install.

VERTICAL THRU THE ROOF INSTALLATION

Fig. 54 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.

 Fig. 55. The enlarged ends of the vent section
always face downward.

JOIST

11"

11"

Attic 
Insulation
Shield

Ceiling 
Installation

JOIST

NAILS (4)

FIRESTOP
SPACER

11"

11"

UPPER FLOOR

Fig. 54

Fig. 55

SEALANT

SHEETMETAL 
SCREWS (#5) —
3 PER JOINT

STORM
    COLLAR