Hot Air Capacity | Tempest® 4442 Burner
HOT AIR CAPACITY - 800°F PREHEATED AIR
It is not economical to field convert a standard Tempest® I Burner (good for 400°F preheated air) to the -H Model good for 800°F, since the gasket, mounting plate, and tile have to be replaced.
The following flow data is provided as guideline information only. In the field, it is hard to accurately measure and maintain the temperature at each burner. As a result, the flow rates at other main air pressures are not proportional to the square root of the pressure drop. Capacities in the following tables are correct only if air and gas pipe nipples screwed into the burner have a straight length equal to at least 5 pipe diameters. Data listed is for stoichiometric firing. Burners can be operated stably at up to 24 osig. Actual lab data is listed below.
For maximum accuracy, use a flue gas analyzer or external metering orifices (see Bulletin 8697).
Sizes -1 through -7 are available in the -H Models.
Air Pressure, osi (UA Pressure Tap)
4442-1-H–800°F Main Air
1
4
9
16
20
Capacity, scfh main air (burning stoichiometric)
220
450
750
950
1100
Max. % XSAir Max. % XSFuel
300+
600+
950+ 1250+ 1500+
30+
30+
30+
30+
30+
Flame Length, in. Flame Diameter, in.
6 2
7 2
8 2
10
10
2
2
Air Pressure, osi (UA Pressure Tap)
4442-2-H–800°F Main Air
1
4
9
16
22
Capacity, scfh main air (burning stoichiometric)
430
825
1250
1700 1950
Max. % XSAir Max. % XSFuel
1000+ 3000+ 3000+ 3000+ 3000+
30+
30+
30+
30+
30+
Flame Length, in. Flame Diameter, in.
14
12
12
14
14
2.0
1.5
1.5
1.5
1.5
Air Pressure, osi (UA Pressure Tap)
4442-3-H–800°F Main Air
1
4
9
16
22
Capacity, scfh main air (burning stoichiometric)
615
1210
1840 2480 2920
Max. % XSAir Max. % XSFuel
950 2000
3000
3000+ 3000+
30+
30+
30+
30+
30+
Flame Length, in. Flame Diameter, in.
8 2
8 2
10
12
14
2
2
2
Limited by reading on 8697-02-62 plate.
Bulletin 4442 Page 7
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