ICP N9MP2 User Manual

NATURAL GAS MANIFOLD PRESSURE (" w.c.)
FOR THE 80,000 BTUH MODEL AND ALTERNATE INPUT MODELS
MEAN ELEVATION FEET ABOVE SEA LEVEL
0 to 2001 to 3001 to 4001 to 5001 to
2000 3000 4000 5000 6000
Orifice Manifold Orifice Manifold Orifice Manifold Orifice Manifold Orifice Manifold
No. Pressure No. Pressure No. Pressure No. Pressure No. Pressure
HEATING
VALUE 6001 to 7001 to
at ALTITUDE 7000 8000
BTU/CU. FT, Orifice Manifold Orifice Manifold
No. Pressure No. Pressure
700 44 3,7
725 44 3.7 44 3,4
750 44 3.5 44 3.2
775 44 3,5 44 3.2 44 3,0
800 44 3.6 44 3.3 44 3.0 44 2.8
825 44 3,7 44 3.4 44 3,1 44 2.9 44 2,6
850 44 3.5 44 3.2 44 2.9 44 2.7 44 2.5
875 44 3,5 44 3,3 44 3.0 44 2.8 44 2.5 47 3.4
900 44 3,3 44 3,1 44 2.8 44 2,6 44 2.4 48 3.6
925 44 3.7 44 3.2 44 2,9 44 2.7 44 2,5 48 3.7 48 3.4
950 44 3,5 44 3,0 44 2,8 44 2.6 44 2,4 48 3.5 48 3.3
975 44 3.3 44 2.8 44 2,6 44 2.4 48 3.7 48 3.4 49 3.6
1000 44 3,2 44 2,7 44 2,5 47 3.3 48 3.5 48 3.2 49 3.4
1050 44 2.9 44 2.5 48 3.7 48 3.4 49 3.7
1100 46 3.3 45 3.7 48 3.4 49 3.7
NOTE: Natural gas data is based on 0.60 specific gravity. For fuels with different specific gravity consult the National Fuel Gas
Z223.1-2002/NFPA 54-2002 or National Standard of Canada, Natural Gas And Propane Installation Code CSA B149.1-05.
Code ANSI
Bold- indicates factory orifice size.
LPG or PROPANE GAS MANIFOLD PRESSURE (" w.c.)
................................................................................................................FOR THE 80,000 BTUH MODEL AND ALTERNATE INPUT MODELS
HEATING VALUE MEAN ELEVATION FEET ABOVE SEA LEVEL
at ALTITUDE 0 to 2001 to 3001 to 4001 to 5001 to 6001 to 7001 to
BTU/CU, FT. 2000 3000 4000 5000 6000 7000 8000
2500 10.0 8.9 8.4 10.0 10.0 10.0 10.0
Orifice Size #55 #55 #55 #56 #56 #56 #56
NOTE: Propane data isbased on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI Z223.1-2002/N FPA
54-2002 or National Standard Of Canada, Natural Gas And Propane Installation Code CSA B149.1-05.
NOTE: The derating of these furnaces at 2% (Natural Gas) and 4% (Propane Gas) has been tested and design-certified by CSA.
o
In Canada, the input rating must be derated 5% (Natural Gas) and 10 _ (Propane Gas) for altitudes of 2,000 to 4,500 above sea level. Use
the 2001 to 3000 column in Table 8, Table 9, Table 10 and Table 11.
General Derating Rules
1.
2,
3,
These furnaces may be used at full input rating when
installed at altitudes up to 2,000'. When installed above
2,000', the input must be decreased 2% (natural) or 4% (LP)
for each 1000' above sea level in the USA. In Canada, the
input rating must be derated 5% (natural) or 10% (LP) for
each 1000' above sea level. See Table 10 or Table 11 for
required high altitude input rate.
For operation with natural gas at altitudes above 2,000', ori-
fice change and/or manifold pressure adjustments may be
required for the gas supplied. First consult your local gas
supplier, then refer to Table 8 for required pressure change
and/or orifice change for high altitudes.
For operation with LP gas, gas orifices MUST be changed
and manifold pressure MUST be maintained as per
Table 9. Orifices can be ordered through our distributor.
(See Fi.gure 39)
High Altitude Input Rate =
Nameplate Sea Level Input Rate x (Multiplier) [USA]
High Altitude Multiplier
Elevation
2001'-3000'
3001'-4000'
4001'-5000'
5001'-6000'
6001'-7000'
7001'-8000'
Natural Gas
0.95
0.93
0.91
0.89
0.87
0.85
LP Gas
0.90
0.86
0.82
0.78
0.74
0.70
* Based on mid-range of elevation.
4. In cases where Table 8 or Table 9 is not applicable, eg. al-
ternate input rate application, refer to Table 10 or Table 11
for required high altitude input rate.
High Altitude Air Pressure Switch
Altitudes over 4,000' may require a different air pressure switch
than the one installed at the factory. Check parts list for pressure
switch and consult [/our distributor for.part number and availability.:
[_ 44001 102102

ICP N9MP2 Specifications

General

Brand	ICP
Model	N9MP2
Category	Furnace
Language	English