Purging Gas Lines
!
WARNING
NEVER PURGE A GAS LINE INTO THE COMBUS-
TION CHAMBER.
NEVER USE A MATCH, TAPER, CIGARETTE LIGHT-
ER, FLAME OR ANY OTHER IGNITION SOURCE TO
CHECK FOR LEAKS IN A GAS LINE.
FAILURE TO ADHERE TO THIS WARNING CAN
CAUSE A FIRE OR EXPLOSION RESULTING IN PROP-
ERTY DAMAGE, PERSONAL INJURY, OR LOSS OF
LIFE.
18 CONVERSIONS
17 GAS SUPPLY AND PIPING
HIGH ALTITUDE: In Canada, the furnace may be converted for
high altitude (2000-4500 feet) by changing the burner ori ces. e
Conversion Kit part number 550001641 contains both natural gas
and LP gas ori ces. (
Table 9
)
In the United States, the modi cations for high altitude are based on
a 2% reduction of input capacity for every 1000 feet above 2000 feet
above sea level.
Table 8
illustrates the impact of altitude for selected
elevations. Consult with local fuel suppliers or authorities to deter-
mine local regulations or customs.
NATURAL TO LP GAS: is series furnace is manufactured as a
natural gas (sea level) appliance that may be converted to LP gas
through use of the Conversion Kit part number 550001648. is
kit contains the ori ces needed for all models, the regulator springs
for the gas valve, and a label to a x adjacent to the appliance rating
plate to alert subsequent service technicians of the conversion.
LP TO NATURAL GAS: Although the furnace is manufactured
initially as a natural gas appliance, if, a er an LP gas conversion it
becomes necessary to convert back to natural gas and the original
parts are unavailable, e Conversion Kit part number 550001816
may be obtained.
TABLE 8 - HIGH ALTITUDE SPECIFICATIONS
(U.S.A.)
MODEL ALTITUDE (FT)
ORIFICE SIZE (DMS)
NATURAL LP GAS
All
0-2000 45 55
2000-3000 48 56
3000-4000 49 57
4000-5000 50 58
5000-6000 51 60
6000-7000 52 61
7000-8000 53 62
8000-9000 54 63
9000-10000 55 65
† Gas input ratings are certi ed for elevations to 2000 . For elevations above
2000 , reduce ratings 2% for each 1000 above sea level.
In Canada, derate the unit 5% for elevations from 2000 to 4000 above sea
level.
TABLE 9- HIGH ALTITUDE SPECIFICATIONS (CANADA)
MOD-
EL
ALTITUDE
(FT)
INPUT
BTU/HR
OUTPUT
BTU/HR
ORIFICE SIZE (DMS)
QTY.
NATURAL LP GAS
60
0 - 2000 60000 57000 45 55
3
2000 - 4500 54000 51300 46 56
80
0 - 2000 80000 76000 45 55
4
2000 - 4500 72000 68400 46 56
100
0 - 2000 100000 95000 45 55
5
2000 - 4500 90000 85500 46 56
120
0 - 2000 120000 114000 45 55
6
2000 - 4500 108000 102600 46 56
† Gas input ratings are certi ed for elevations to 2000 . For elevations
above 2000 , reduce ratings 2% for each 1000 above sea level.
In Canada, derate the unit 5% for elevations from 2000 to 4000
above sea level.
Figure 29 - Inshot Burner Assembly
36
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