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Page 16 USSC
10. Install grate frame (if not already installed): Lay
the first grate frame on the side supports and slide to
the back of the unit. Then install the second grate
frame to the front as shown in the picture above.
12. Installing Firebrick: Place 5 bricks on each side (10
brick total). The bricks tuck under firebox seem.
9. Installing collar to top: To install hot air attaching
collar, simply bend all tabs right angle under shroud.
This may be possible with thumbs, if not, remove top
and use small hammer.
CAUTION: Any hot air plenum connection to a furnace must
be constructed of metal.
Installing Grates: Install grates together, slip shaker
lug into hole and place grates into frame. Grate arch
faces upward. Check out grate rotation by placing
shaker handle on grate lug (3/4"). Grates should ro-
tate freely.
NOTE: Grates are designed to withstand high tempera-
tures, however, should you overfire the furnace you
may fuse or melt grates. This happens if furnace re-
ceives too much air caused by leaving the ash and feed
doors open, draft fan cover wide open, and hot coals
or ashes are excessive in ash pan.
11.