Napoleon WSX-N Series, Installation And Operating Instructions Manual

Page: 37 / 156

W415-3101 / B / 01.09.23
37
IOM
13.0 CONVERSIONS
13.1 HIGH ALTITUDE CONVERSION
H18.1.4A
In Canada , this furnace does not need to be converted for high altitude (2000-4500ft), when the fuel source is
natural gas. It has been certifi ed to operate at high altitude as manufactured. Between 2000ft and 4500ft when
the fuel source is LP, a 10% reduction of input capacity is necessary.
In the United States , this furnace does not need to be converted for high altitude from (2000-7800ft), when
the fuel source is natural gas. It has been certifi ed to operate at high altitude as manufactured up to 7800ft
only. Beyond 7800ft the modifi cations are based on a 4% reduction of input capacity for every 1000ft above
sea level. If the fuel source is liquid propane, refer to High Altitude Specifi cations table for appropriate derate
above 2000ft based on a 4% reduction of input capacity for every 1000ft above sea level. Consult with local
fuel suppliers or authorities to determine local regulations or customs.
FIGURE 24 - INSHOT BURNER ASSEMBLY
TABLE 6 - HIGH ALTITUDE GUIDE (U.S. ONLY) (WSX)
MODEL ALTITUDE
ORIFICE SIZES (DMS)
NATURAL LP
40/60/
80
0-2000 (0-610 m)
45
55
2000-3000 (610-914 m)
56
3000-4000 (914-1219 m)
4000-5000 (1219-1524 m)
5000-6000 (1524-1829 m)
6000-7000 (1829-2134 m)
7000-7800 (2134-2377 m)
7800-8000 (2377-2438 m) 53 62
8000-9000 (2438-2743 m) 54 63
9000-10000 (2743-3048 m) 55 65
Gas input ratings are certifi ed for elevations to 7800 ft (2377 m) on
natural gas. For elevations above 7800 ft (2377 m) on natural gas, or LP
fuel source above 2000ft (610m), follow the orifi ce de-rate chart above.
H12.8.8A
H18.2C
This series furnace is manufactured as a natural gas appliance that may be converted to LP gas through use of
the
Conversion Kit part number W370-0258 . This kit contains the conversion kit instructions, orifi ces needed
for all models, the regulator spring for the gas valve, and a label to a
ffi
x adjacent to the appliance rating plate to
alert subsequent service technicians of the conversion. The parts removed for this conversion must remain
with the furnace for any future conversion back to natural gas.
When converting for LP operation the installation of a low pressure cut o
ff
switch is required, which is included in
the LP Conversion Kit (Part No. W370-0258).
13.2 NATURAL TO LP GAS
H18.3A
Refer to Conversion NG to LP Kit (W370-0258) for complete instruction.
13.3 CONVERSION STEPS