Heatilator NDV3630 Owner's Manual page 56

G. Place the Rockwool K. Air Shutter Setting
-
Follow rockwool place-
ment instructions. DO NOT place rockwool directly over
burner ports. Replace rockwool material annually. Improp-
erly placed rockwool interferes with proper burner opera-
tion.
H. Place the Lava Rock
Close Open
Rockwool
Figure 15.6 Adjusting Air Shutter
Lava Rock &
Vermiculite
Figure 15.5 Placement of Rockwool, Lava Rock and Vermiculite
I. Place the Vermiculite
J. Replacing Fixed Glass Assembly
56 Heatilator • Novus NDV Series • 4055-187 Rev J • 08/09