Engineering Data | 4445N Tempest®
Natural Gas, USCS Main Air Pressure, (UA pressure tap), "w.c.
4445N-2
osi
0.2
1
4
9
16
20
24
"w.c. 0.3
1.7
6.9
15.6
27.7
34.6
41.5
Air Flow, not burning (scfh)
2320 2065
Air Flow, (scfh)
235 0.4 0.3 200 200 200 150
500
1020
1530
2350 24.8 22.0 1600 1600 1700 1600
2625 29.6
Air Orifice UA-DA, (in. w.c.)
1.1
4.7 4.9
11.6 9.8
19.6 18.1
Gas Pressure @ 10% excess air "w.c.
1.4
27.5
Max % Excess Air, ignition
300 300 300 300
1000 1000 1000 1000
1500 1400 1400 1400
1400 1400 1400 1400
1800 1700 2000 1700
Max % Excess Air, Flame Rod flame signal Max % Excess Air, UV flame signal S, M length Max % Excess Air, UV flame signal L, XL Length
Max % XS Fuel, ignition/flame signal
30
30
30
30
30
30
30
Flame Length (in) Flame Diameter (in)
8 2
9 2
10
10
11
12
12
2
2
2
2
2
4445N-3
osi
0.2
1
4
9
16
20
24
"w.c. 0.3
1.7
6.9
15.6
27.7
34.6
41.5
Air Flow, not burning (scfh)
3650 3350 22.0 14.8 1900 1900 1900 1900
Air Flow, (scfh)
3450
825
1650
2500
3850
4100
Air Orifice UA-DA, (in. w.c.)
0.2 0.2
1.3
5.3 4.1
12.1 9.5
27.5 18.4
33 22
Gas Pressure @ 10% excess air "w.c.
1.1
Max % Excess Air, ignition
300 300 300
1000 1000 1000
1100 1100 1100 1100
1300 1300 1300 1300
1700 1800 2000 2000
1700 1700 2000 2000
Max % Excess Air, Flame Rod flame signal Max % Excess Air, UV flame signal S, M length Max % Excess Air, UV flame signal L, XL Length
150
400
Max % XS Fuel, ignition/flame signal
30
30
30
30
30
30
30 20 3.0
Flame Length (in) Flame Diameter (in)
12
14
16
16
16
16
3.0
2.5
2.0
2.0
2.5
2.0
4445N-4-A
osi
0.2
1
4
9
16
20
24
"w.c. 0.3
1.7
6.9
15.6
27.7
34.6
41.5
Air Flow, not burning (scfh)
6600 5800
Air Flow, (scfh)
550
1300
2700
4300
6600 25.0 21.0 1400 1700 1400 1400
7400 30.4 24.6 1200 1700 1200 1200
Air Orifice UA-DA, (in. w.c.)
0.2 0.2
1.1
1.5
10.8
19.6 18.1
Gas Pressure @ 10% excess air "w.c.
1.4
4.3
8.1
Max % Excess Air, ignition
400 350 800 800
700 700 800 800
1100 1100 1100 1100
1400 1600 1400 1400
1200 1600 1000 1000
Max % Excess Air, Flame Rod flame signal Max % Excess Air, UV flame signal S, M length Max % Excess Air, UV flame signal L, XL Length
Max % XS Fuel, ignition/flame signal
30
30
30
30
30 20
30 20
30 20 5.0
Flame Length (in) Flame Diameter (in)
14
14
18
18
3.0
4.0
4.0
4.0
4.0
4.0
Bulletin 4445/4445N Page 3
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