Performance Data | Tempest® 4442 Burner
Tempest® I integral orifices with upstream and downstream pressure taps indicate flows and pressure drops that are accurate to within plus or minus 7% at 16 osi air pressure on stoichiometric ratio. At other pressures and ratios, indicated flow rates are less accurate; and they are not proportional to the square root of the pressure drop due to effects on downstream taps of combustion within the Tempest tile. Accuracy is less if straight pipe upstream of the orifices is less than 5 pipe diameters.
For maximum accuracy, use flue gas analysis or external metering orifices (see Bulletin 8697).
Flows and pressures are listed for 60°F inlet conditions. Variations in tile pressure will effect the burner air/fuel flows. All lighting tests are on an equilib- rium basis (air, gas on, spark energized). Non-equilibrium results will vary (spark energized, gas on).
All flame supervisory limits listed below were conducted with Honeywell UV components. Tests conducted in 1996 on 4442-1, -2, and -3 with the Landis & Gyr UV QRA10.B detector with LF1 controller (minimum signal strength = 70 IA), indicated that these components performed equally to the Honeywell and should probably work on all sizes.
Air Pressure, osi (UA Pressure Tap)
4442-0 (Flame rod not recommended) Capacity, scfh main air (burning stoichiometric)
0.5
1
4
9
14
16
20
24
85
180
350
520
640
710
800
880
Air Orifice , (UA-DA) in. w.c. Gas Orifice , (UG-DG) in. w.c. Tile Pressure, (DG) in. w.c. Max. % XSAir, stability, UV Max. % XSFuel, stability, UV
† † †
† † †
† † †
† † †
0
0
0
0
1.0
1.3
1.5
2.0
10
12
15
18
20‡ 30+
150 30+
400 30+
600 30+
1000
1000
1000
2000
30+
30+
30+
30+
Flame Length, in. Flame Diameter, in.
3
4
4.5 0.5
5
5
6
6
7
0.5
0.5
0.5
1
1
1
1
Capacity, scfh main air (not burning) Minimum gas flow lighting, scfh Maximum gas flow lighting, scfh
1000
— —
14 17
6
6
8
8
8
8
25
25
25
25
25
25
Air Pressure, osi (UA Pressure Tap)
4442-1
0.5 260
1
4
9
14
16
20
24
Capacity, scfh main air (burning stoichiometric)
340
660
980
1250
1310 10.6 3.8 14.5
1440 13.0
1740
Air Orifice , (UA-DA) in. w.c. Gas Orifice , (UG-DG) in. w.c. Tile Pressure, (DG) in. w.c. Max. % XSAir, stability, UV Max. % XSFuel, stability, UV
† † †
† † †
† † †
† † †
8.9 3.3 13.1
15.4
4.4
6.9
19
22.5
800 30+
1000 2500
3000+
3000+
3000+
3000+ 3000+
30+
30+
30+
30+
30+
30+
30+
Flame Length, in. Flame Diameter, in.
4
4
7
7
1 0 1.5
10 1.5
11
12
1
1
1.3
1.3
1.5
1.5
Capacity, scfh main air (not burning)
1800
Max. % XSA, flame rod Max. % XSF, flame rod
— —
320 30+
75
100 30+
—
120
—
—
30+
30+
Minimum gas flow lighting, scfh Maximum gas flow lighting, scfh
15
25 65
30
30
35
35
35
35
40
150
250
270
270
270
270
Footnotes are shown on page 6.
Bulletin 4442 Page 4
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