Enviro 1700-V Insert, Venice, 1200-V Insert owner manual 3D of Dimensions needed from Fireplace

Installation

INSTALLATION USING A BLOCK-OFF PLATE FOR USA ONLY:

If this unit is to be installed into a masonry fireplace or a zero-clearance fireplace with a direct connection you must install a non-combustible seal-off device such as a block-off plate or damper adapter. By installing a block-off plate you seal the chimney, ensuring that no smoke enters the home and sealing the chimney to encourage draft. To construct a block-off plate follow the below steps.

1.Determine where the block-off plate will be installed; above the top of the firebox (it must be high enough to easily install the connection pipe) but below the damper area. Look for a location that

is level and in an area where the plate can be mounted easily.

The measurement that will be needed are as followed (refer to Figure 17 and 18):

A - The width at the front of the firebox at the height where the block-off plate will be installed.

B - The width at the back of the firebox at the height where the block-off plate will be installed.

C - Then depth of the block-off needed (the distance between A and B).

D - The distance of the center of the flue to the front of the fireplace opening. Refer to Step 3.

NOTE: In general masonry fireplaces have square fireboxes while zero-clearance (metal) fireplaces have domed firebox tops. Therefore zero-clearance block-off plates may be more difficult to install. Insulation may be used around the edges to simplify sealing the plate.

2.Create a cardboard template of the dimensions with 2” (51 cm) wide flanges on each side. These flanges 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. Continue on if the template fits correctly in its planned location. If the template does not fit, make a new template with the required corrections until it does fit correctly.

3.With the template in place, mark the location for the center of the flue pipe when the unit is in place. If installing a 1200-V the distance will be approximately 81⁄4” or 9 15/16” back from the fireplace opening. If installing a 1700-V the distance will be approximately 123⁄4” or 14 7/16” back from the fireplace opening. Remove the template and cut a 61⁄4” diameter hole centered on this mark.

4.Using the template make the block-off plate of 24 gauge or thicker steel. Drill two (2) holes in each flange for mounting the plate.

Figure 17: 3D of Dimensions needed from

the Fireplace.

B

C

D

A

Front of fireplace opening.

Figure 18: Layout of the Block-Off Plate.

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