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Heatilator • Novus NDV Series • 4055-187 Rev. V • 1/1256
G. Place the Rockwool
WARNING! Risk of Explosion! 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.
• Rockwool is shipped with this gas appliance.
• Place a small amount of 1/2 in. diameter pieces (dime-
size) rockwool on the burner pan so that the rockwool
touches, but does not cover, the holes in the burner
pan (refer to Figure 15.4). This will provide the “glowing
embers” look.
• It is not necessary to use the entire bag. Save the
remaining rockwool for future use.
I. Place the Vermiculite
Sprinkle on top of lava rock.
Rockwool
Lava Rock &
Vermiculite
Figure 15.5 Placement of Rockwool, Lava Rock and Vermiculite
H. Place the Lava Rock
See Figure 15.5.
J. Replacing Fixed Glass Assembly
• Set the glass panel on the lower two or four glass
assembly latches, ensuring the glass panel is centered
in the opening.
• Replace glass latches. See Figure 15.4.
K. Air Shutter Setting
Air shutter setting should be adjusted by a qualifi ed in-
staller at the time of installation.
• The air shutter is set at the factory for minimum vertical
vent run.
• Adjust air shutter for longer vertical runs. See
Figure 15.6.
• Turn the thumbscrew to open and close.
OpenClose
Figure 15.6 Adjusting Air Shutter