Osburn Matrix Installation and Operation Manual
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5.1.3
REPLACING THE DOOR GASKET
It is important to maintain the gasket in good condition. After a year or more of use, the door
gasket will compress and become hard, which may allow air to leak past it. You can test the
condition of the door gasket by closing and latching the door on a strip of paper. Test all around
the door. If the paper slips out easily anywhere, it is time to replace the gasket.
Use the correct replacement gasket that you can purchase from your retailer. The diameter and
density of the gasket is important to getting a good seal.
Place the door face-down on something soft like a cushion of rags or piece of carpet. Remove the
old gasket from the door by pulling and prying it out with an old screw driver. Then use the
screwdriver to scrape the old gasket adhesive from the door. Now run a 6 mm (1/4”) bead of high
temperature silicone in the door gasket groove. Starting from the middle of the hinge side, press
the gasket into the groove. Do not stretch the gasket as you place it. Leave the gasket about 12
mm (1/2”) long when you cut it and press the end into the groove. Tuck any loose fibres under the
gasket and into the silicone. Close the door and do not use the wood fire for 24 hours.
5.1.4
REPLACING THE GLASS GASKET AND/OR THE GLASS
It is a good idea to replace the glass gasket when the door gasket is replaced. The gasket is flat,
adhesive-backed, woven fibreglass. Remove the glass retaining screws and clips. Lift out the glass
and pull off the old gasket. This is a good time to clean the glass thoroughly.
It is a good idea to replace the glass gasket when the door gasket is replaced. The gasket is flat,
adhesive-backed, woven fibreglass. Remove the glass retaining screws (A) and clips (B) then both
metal frames (C) that holds the glass (D) to the door frame (E). Lift out the glass and pull off the
old gasket. This is a good time to clean the glass thoroughly.
