Nortek SC Series Installation Instructions

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Table 10. High Altitude Deration – Natural Gas with HIGH Heating Value
HIGH ALTITUDE DERATION – NATURAL GAS WITH HIGH HEATING VALUE
ALTITUDE ABOVE
SEA LEVEL
INPUT (BTU)
38,000
(SC MODELS)
38,000
(SD MODELS)
54,000 72,000 90,000 108,000 118,000 120,000
0 to 1,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 MANIFOLD PRESSURE
2,000 to 2,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
3.0 3.2 3.2 3.2 3.2 3.2 3.2 3.3 MANIFOLD PRESSURE
3,000 to 3,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
2.8 3.0 3.0 3.0 3.0 3.0 3.2 3.1 MANIFOLD PRESSURE
4,000 to 4,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
2.7 2.8 2.8 2.8 2.8 2.8 2.8 2.9 MANIFOLD PRESSURE
5,000 to 5,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
2.5 2.5 2.7 2.7 2.7 2.7 2.7 2.8 MANIFOLD PRESSURE
6,000 to 6,999 FT
49 53 49 49 49 49 48 48 ORIFICE SIZE
3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 MANIFOLD PRESSURE
7,000 to 7,999 FT
49 53 49 49 49 49 48 48 ORIFICE SIZE
3.4 3.2 3.3 3.3 3.3 3.3 3.3 3.3 MANIFOLD PRESSURE
8,000 to 8,999 FT
49 53 49 49 49 49 48 48 ORIFICE SIZE
3.2 3.0 3.0 3.0 3.0 3.0 3.0 3.0 MANIFOLD PRESSURE
9,000 to 9,999 FT
49 53 49 49 49 49 48 48 ORIFICE SIZE
3.0 2.8 2.8 2.8 2.8 2.8 2.8 2.8 MANIFOLD PRESSURE
HIGH ALTITUDE DERATION – NATURAL GAS WITH LOW HEATING VALUE)
ALTITUDE ABOVE
SEA LEVEL
INPUT (BTU)
38,000
(SC MODELS)
38,000
(SD MODELS)
54,000 72,000 90,000 108,000 118,000 120,000
0 to 1,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 MANIFOLD PRESSURE
2,000 to 2,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 MANIFOLD PRESSURE
3,000 to 3,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
3.1 3.4 3.3 3.3 3.3 3.3 3.3 3.4 MANIFOLD PRESSURE
4,000 to 4,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
2.9 3.2 3.1 3.1 3.1 3.1 3.1 3.2 MANIFOLD PRESSURE
5,000 to 5,999 FT
45 51 47 47 47 47 46 45 ORIFICE SIZE
2.8 3.1 2.9 2.9 2.9 2.9 2.9 3.1 MANIFOLD PRESSURE
6,000 to 6,999 FT
45 51 47 47 47 47 46 45
ORIFICE SIZE
2.6 2.9 2.8 2.8 2.8 2.8 2.8 2.9
MANIFOLD PRESSURE
7,000 to 7,999 FT
48 53 49 49 49 49 48 48 ORIFICE SIZE
3.3 3.5 3.4 3.4 3.4 3.4 3.4 3.5 MANIFOLD PRESSURE
8,000 to 8,999 FT
48 53 49 49 49 49 48 48 ORIFICE SIZE
3.0 3.3 3.2 3.2 3.2 3.2 3.2 3.3 MANIFOLD PRESSURE
9,000 to 9,999 FT
48 53 49 49 49 49 48 48 ORIFICE SIZE
2.8 3.1 2.9 2.9 2.9 2.9 2.9 3.1 MANIFOLD PRESSURE
Table 11. High Altitude Deration – Natural Gas with LOW Heating Value

Nortek SC Series Specifications

General

Brand	Nortek
Model	SC Series
Category	Furnace
Language	English