Offset Installation, Cutting the Hole

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.

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BFC36 specifications

The Vermont Castings BFC36 is a wood-burning fireplace that stands out for its impressive craftsmanship, aesthetics, and efficiency. This versatile model seamlessly combines traditional craftsmanship with modern technology, making it a popular choice for homeowners seeking both functionality and style.

One of the most notable features of the BFC36 is its ability to generate substantial heat while maintaining an energy-efficient performance. With a heating capacity of up to 2,200 square feet, it is perfect for large living spaces or open-concept homes. The unit is designed with a high-efficiency combustion system that allows for longer burn times and reduced wood consumption, making it an environmentally responsible choice. This efficiency not only translates into less frequent refueling but also leads to lower heating costs over time.

The BFC36 also boasts a large viewing area, framed by a beautifully crafted cast-iron faceplate. The door features a ceramic glass window that provides an unobstructed view of the flames, enhancing the ambiance of any room. The unit's elegant design is sure to become a focal point in your living space, combining functionality with a classic aesthetic.

A standout technology featured in the BFC36 is its Advanced Secondary Combustion System. This innovative feature ensures that any unburnt gases are reintroduced into the firebox, where they are burned off, resulting in cleaner emissions and more efficient heat output. This technology not only reduces smoke and particulate emissions but also enhances the fireplace's overall performance.

The BFC36 is constructed from durable cast iron, known for its superior heat retention and distribution capabilities. This material not only ensures longevity and resilience but also provides a traditional look that pairs well with various home styles. The fireplace is also equipped with an air wash system that keeps the glass clean, allowing for unobstructed views of the flames and a hassle-free maintenance experience.

In terms of installation, the BFC36 is designed to accommodate both masonry and zero-clearance installations, making it highly versatile for various home designs. Additionally, it offers customizable options, including multiple finish colors and trim styles, which enables homeowners to tailor the appliance to their specific tastes and preferences.

In conclusion, the Vermont Castings BFC36 is an exemplary wood-burning fireplace that emphasizes efficiency, beauty, and modern technology, making it an ideal choice for anyone looking to enhance their home's heating solution while maintaining an inviting atmosphere.