Offset Installation, Cutting the Hole | Vermont Casting 647 BFC

Chimney Centerline

Actual Center- point

8��"

(222mm)

Plumb Line

Plumb Bob

Imaginary Center- point

FPC556a

Fig. 9 Locate centerline of chimney with plumb line.

Offset Installation

In order to clear an obstruction, it may be necessary to offset chimney from vertical. This is accomplished by using elbows. Use the 30° Offset Elbow table on Page 5 to determine proper offset and parts required.

Each offset requires two (2) elbows. The second elbow is equipped with support straps. It is very important to install the second elbow in each offset as close to the ceiling or support as possible so that the elbow straps can be secured to framing members to help support the

weight of the chimney.

Determine offset distance of your chimney arrangement from centerline of ﬁreplace to centerline of chimney where it is to pass through ceiling.

Locate center point of the chimney on ceiling as though a straight up chimney arrangement is to be used. Mea- sure your offset dimension from straight up chimney center point on ceiling.

BFC36 Balance Flue Heat-Circulating Fireplace

Ceiling Chimney Hole/

Possible Obstructions

The size of the hole in ceiling will vary with the angle at which the chimney passes through ceiling.

Drive a nail up through ceiling at marked chimney cen- ter point. Go to ﬂoor above and see where hole will be cut. Check to see where existing ceiling joists and other possible obstructions are located...i.e. wiring, plumbing etc... If necessary, re-position chimney and/or ﬁreplace to avoid obstructions.

Cutting the Hole

Cover ﬁreplace collar opening and cut proper sized

chimney hole in chimney.

Framing the Ceiling Hole

Frame the ceiling chimney hole as shown in Figure

10.It is good practice to use framing lumber that is the same size as the ceiling joists; this is a requirement at attic level.

Existing			17¹⁄₂”
Ceiling			17¹⁄₂”	17¹⁄₂”
Joists			(445mm)	17¹⁄₂”
Joists			(445mm)	(445mm)
				(445mm)
					Chimney
					Hole
		New
		Framing
		Members		Ceiling	FP551b
				Ceiling	FP551b
Fig. 10	Typical frame for ceiling chimney hole.

The following table gives ﬁrestop spacer model num- bers:

Chimney Hole Size

	Angle of Chimney
	at Ceiling
Size of Chimney	Vertical	30°
	FS2A	FS6A
8” Flue	17¹⁄₂” x 17¹⁄₂”	17⁷⁄₈” x 29⁵⁄₈”
	(445 x 445mm)	(454 x 753mm)

Fig. 11 Ceiling chimney hole sizes necessary for installing ﬁrestop spacer.

The inside dimension of the frame must be the same as the hole size selected from Figure 11 in order to provide required the 2” (51mm) air space between the outside diameter of the chimney and the edges of the framed ceiling hole.

7412647

647 BFC specifications

The Vermont Casting 647 BFC, a renowned wood-burning stove, combines timeless design with advanced technology, making it a popular choice among homeowners seeking both efficiency and aesthetics. With its robust construction and classic look, the 647 BFC stands as a statement piece in any living space while delivering a high level of performance.

One of the standout features of the Vermont Casting 647 BFC is its exceptional heating capacity. Designed to warm spaces up to 2,000 square feet, this stove is ideal for residential use, particularly in larger homes or open-concept layouts. The 647 BFC utilizes a large firebox that can hold logs up to 22 inches in length, allowing for extended burn times and less frequent refueling, making it not only convenient but also energy-efficient.

A key technology incorporated into the Vermont Casting 647 BFC is its soapstone lining. This material retains heat longer than traditional steel, ensuring a steady release of warmth even after the fire has died down. This feature contributes to the overall efficiency of the stove, minimizing fuel consumption and promoting a cleaner burn. The stove also features an adjustable air control system, which allows users to fine-tune the burn rate, enhancing efficiency and reducing emissions.

Moreover, the 647 BFC is designed with style and versatility in mind. Its traditional appearance, characterized by a cast iron body and elegant detailing, makes it a fitting addition to both modern and rustic interiors. Available in a variety of finishes, including classic black and vibrant colors, homeowners can find a model that complements their decor.

Safety is a paramount consideration in the design of the Vermont Casting 647 BFC. Equipped with a solid cast iron door and a secure latch, the firebox remains contained, preventing accidental contact with flames. Additionally, the stove features a raised grate system that allows for ash to fall through, keeping the firebox cleaner and reducing maintenance.

In summary, the Vermont Casting 647 BFC combines classic aesthetics with modern technology for an exceptional wood-burning experience. Its impressive heating capabilities, efficient design, and safety features solidify its position as a top choice for anyone looking to enhance their home's warmth and charm. Whether used as a primary heat source or a cozy addition to a living space, the 647 BFC is a testament to quality craftsmanship and thoughtful engineering.