Nortek SC Series Installation Instructions

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Table 8. High Altitude Deration – Propane Gas
HIGH ALTITUDE DERATION – PROPANE GAS
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
56 60 56 56 56 56 55 55 ORIFICE SIZE
10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 MANIFOLD PRESSURE
2,000 to 2,999 FT
56 60 56 56 56 56 55 55 ORIFICE SIZE
9.0 9.0 9.0 9.0 9.0 9.0 9.0 9.0 MANIFOLD PRESSURE
3,000 to 4,999 FT
56 60 56 56 56 56 55 55 ORIFICE SIZE
8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 MANIFOLD PRESSURE
5,000 to 5,999 FT
57 61 57 57 57 57 56 56 ORIFICE SIZE
10.0 8.5 10.0 10.0 10.0 10.0 10.0 10.0 MANIFOLD PRESSURE
6,000 to 7,999 FT
57 61 57 57 57 57 56 56 ORIFICE SIZE
9.0 8.0 9.0 9.0 9.0 9.0 9.0 9.0 MANIFOLD PRESSURE
8,000 to 10,000 FT
57 61 57 57 57 57 56 56 ORIFICE SIZE
8.5 7.5 8.5 8.5 8.5 8.5 8.5 8.5 MANIFOLD PRESSURE
LOCAL HEATING VALUES FOR NATURAL GAS
ALTITUDE ABOVE
SEA LEVEL
BTU PER CUBIC FOOT
650 700 750 800 850 900 950 1,000 1,050
2,000 FT LOW LOW LOW LOW LOW LOW
HIGH HIGH HIGH
3,000 FT LOW LOW LOW LOW LOW LOW
HIGH HIGH HIGH
4,000 FT LOW LOW LOW LOW LOW
HIGH HIGH HIGH HIGH
5,000 FT LOW LOW LOW LOW LOW
HIGH HIGH HIGH HIGH
6,000 FT LOW LOW LOW LOW
HIGH HIGH HIGH HIGH HIGH
7,000 FT LOW LOW LOW LOW
HIGH HIGH HIGH HIGH HIGH
8,000 FT LOW LOW LOW
HIGH HIGH HIGH HIGH HIGH HIGH
9,000 FT LOW LOW LOW
HIGH HIGH HIGH HIGH HIGH HIGH
10,000 FT LOW LOW
HIGH HIGH HIGH HIGH HIGH HIGH HIGH
Table 9. Natural Gas Heating Values

Nortek SC Series Specifications

General

Brand	Nortek
Model	SC Series
Category	Furnace
Language	English