All installations and services must be performed by qualified service personnel.
If the combustion air passageway cannot terminate outside of the skirting or enclosure, a permanent opening with a minimum of 50 square inches of unobstructed infiltration (free area) for ventilation air must be provided for adequate combustion. This permanent opening must be located no less than 12 inches from the bottom of the enclosure or skirting.
Figure 3
Slit the corners of feeder duct down to the top of the top panel. If metal projects more than 1 inch above the top panel, trim the flanges down to 1 inch. While pulling the top of the distribution duct up with one hand, bend down each side of the feeder duct tightly to the top panel with the other hand. This assures a tight connection between the top panel and the feeder duct and that the distribution duct will be full size. Use high temperature tape and/or high temperature silicone caulking on all joints and seams to minimize air leakage. Secure the top panel to the floor with two screws in the front flange.
2.Cottage Base Model:
The
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