20 Insert Installation (for qualified installers only)

Block-Off Plate Installation

Whenever this appliance is installed with a direct connection a block-off plate, or other non- combustible seal-off device (e.g. damper adapter), will need to be installed. This device is used to seal the chimney, insuring no smoke enters the home and providing the chimney system with a seal to promote draft. The directions below detail the steps for construction and installation of a block-off plate.

1.Determine a location for the block-off plate at the top of the firebox below the damper area (make it high enough to allow installation of the connection pipe). The location should be level and in an area where it can be mounted easily. Measure the width at the rear ("A") and front ("B") of the firebox at the height where the block-off plate will be installed (see the illustration below). Then measure the depth of the location where the block-off plate will be installed ("C").

NOTE: Most masonry fireplaces have square fireboxes while certain zero-clearance (metal) fireplaces often have domed firebox tops. This makes zero-clearance block-off plates more difficult to install. To simplify the procedure, insulation may be used to seal the rounded edges.

2.Make a cardboard template of the measurements, but add a 2" flange to each side. This flange will be used to mount the block-off plate to the inside of the firebox. Bend the flanges downwards on the template and place it inside the fireplace. If the template fits correctly in its planned location, go to the next step. If it does not, make a new template with the appropriate corrections until it fits correctly.

3.With the template in place, mark the location that is centered in the fireplace and 9 1/4" back from the fireplace opening. This location approximates the center of the flue when the insert is in place (a slight offset may occur based upon insert and block-off plate placement). Remove the template and cut a 6 1/4" diameter hole centered on this mark.

4.Make the block-off plate of 24 gage or thicker steel to match the template. Drill two holes in each flange for mounting the plate.

5.Mount the block-off plate using masonry screws.

NOTE: Use sheet metal screws on zero-clearance (metal) fireplaces (screws need only be long enough to penetrate the first layer of metal).

6.Insulate the block-off plate using high-temperature fiberglass insulation (Kaowool® or equivalent) and furnace cement (allow the cement to dry for at least 24 hours before burning).

7.After placing the appliance and installing the pipe through the block-off plate, use high- temperature fiberglass insulation and furnace cement to seal any cracks between the pipe and block-off plate.

Block-Off Plate Template

The center of

the flue is 9 1/4"

back from the

 

Damper

B

 

C

A

2" Flanges (for attaching the block-off plate)

Measurement

"A"

Measurement

"C"

fireplace

opening.

Firebox

Measurement "B"

The center of the flue is 9 1/4" back from the fireplace opening (6 1/4" in diameter).

Travis Industries

93508133

4 020509

Page 20
Image 20
Avalon Stoves 790, 745 owner manual Block-Off Plate Installation, Block-Off Plate Template

790, 745 specifications

Avalon Stoves has made a name for itself in the realm of high-efficiency wood stoves, and the Avalon 745 and Avalon 790 models stand out as exceptional choices for homeowners looking to heat their spaces sustainably and effectively. These units are designed with a focus on performance, aesthetics, and user-friendliness, making them ideal for both new installations and replacements.

One of the main features of the Avalon 745 is its unique design that accommodates larger logs while maintaining an efficient burn. With a firebox capacity of 3.4 cubic feet, this stove can hold logs up to 18 inches in length, allowing for longer burn times and reduced wood handling. The 790 model, on the other hand, offers an even larger capacity, making it suited for heating larger spaces or for users who prefer fewer reloads. Both models feature a top-loading design that simplifies the process of adding fuel.

In terms of technology, Avalon stoves employ a range of advanced features to optimize heating output. One key aspect is the secondary combustion system, which enhances efficiency by allowing the smoke and gases released during burning to combust again. This not only maximizes heat output but also minimizes emissions, making the stove a more environmentally friendly option. Additionally, the air wash system helps keep the glass clean, providing an unobstructed view of the fire while reducing the frequency of maintenance.

The construction quality of Avalon stoves is noteworthy. Built with heavy-duty steel and lined with firebrick, these stoves are designed for durability and heat retention. The high-efficiency design ensures that the heat generated is distributed evenly throughout the room, providing consistent warmth even during the coldest months. With an EPA certification, both the 745 and 790 models meet stringent emission standards, making them one of the cleaner-burning options available.

Aesthetic appeal is also a significant consideration in the design of Avalon stoves. Both models feature a sleek, contemporary look that can seamlessly integrate into a variety of home decors. Customers can choose from a range of finishes and door styles to match their personal preferences and existing interiors.

In conclusion, the Avalon 745 and 790 stoves highlight the brand's commitment to efficiency, quality, and style. With their advanced technologies, robust construction, and elegant designs, these stoves not only provide warmth but also enhance the ambiance of any living space. For homeowners seeking a reliable and attractive heating solution, Avalon stoves are a commendable choice.