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E. Burner Orifi ces - Novus NDV & NBV
•
Remove the air shutter door by lifting it off the shutter
bracket. See Figure 1.9.
•
Remove the two screws holding the shutter bracket
and remove the bracket to expose the orifice. See
Figure 1.10.
•
Use Table 2.1 and the existing rating label (located in
the control area) to determine the correct orifi ce for your
appliance.
•
Use a 3/8 in. wrench to loosen, remove and discard the
existing orifi ce. See Figure 1.11.
•
Replace the existing orifi ce with the appropriate natural
gas orifi ce and tighten.
•
Reinstall the air shutter assembly.
•
All connections must be tightened and checked for leaks
with a commercially available, non-corrosive leak check
solution. Be sure to rinse off the solution when done leak
testing.
Figure 1.9
Removing Air Shutter Door
Figure 1.10 Removing the Shutter Bracket
Figure 1.11 Loosening the Orifi ce
4
Heatilator • SCKVN-B Conversion Kit • 4016-124 Rev F • 11/07
F. High Altitude Installation
U.L. Listed gas appliances are tested and approved without
requiring changes for elevations from 0 to 2000 feet in the
U.S.A. and Canada.
When installing this appliance at an elevation above 2000 ft,
it may be necessary to decrease the input rating by chang-
ing the existing burner orifi ce to a smaller size. Input rate
should be reduced by 4% for each 1000 ft above a 2000 ft
elevation in the U.S.A., or 10% for elevations between 2000
and 4500 ft in Canada. If the heating value of the gas has
been reduced, these rules do not apply. To identify the prop-
er orifi ce size, check with the local gas utility.
If installing this appliance at an elevation above 4500 ft (in
Canada), check with local authorities.
G. Pilot Orifi ce
•
Secure the bracket of the pilot assembly and loosen the
nut with a 7/16 in. wrench. See Figure 1.12.
•
Loosen the nut until the pilot hood becomes loose from
the pilot assembly.
•
The orifi ce is inside the base of the pilot assembly. See
Figure 1.13.
•
Discard the existing orifi ce and replace with the pilot orifi ce
from this kit.
Figure 1.12 Loosen the Pilot Hood (CD & Designer Series)
Figure 1.13 Pilot Orifi ce (CD and Designer Series)
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