Engineering Data | 4445N Tempest®
Natural Gas, USCS Main Air Pressure, (UA pressure tap), "w.c.
4445N-4-B
osi
0.2
1
4
9
16
20
"w.c. 0.3
1.7
6.9
15.6
27.7
34.6
Air Flow, not burning (scfh)
8050 7300
Air Flow, (scfh)
730 0.2 0.3
1750
3450
5300
8200 26.6 23.7 20.6 800 1200 1300 1200
Air Orifice UA-DA, (in. w.c.) Gas Pressure @ Stoic. "w.c.
1.3 1.7 1.4
5.0 5.0 4.5
11.8 10.8
21.2 17.9 16.2
Gas Pressure @ 10% excess air "w.c.
0.2
9.0
Max % Excess Air, ignition
400 400 400 400
1400 1300 1300 900
1700 1200 1600 1400
1400 1200 1500 1000
1400 1300 1400 1300
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 20
30
30 22 4.5
30 25 4.5
Flame Length (in) Flame Diameter (in)
17
19
21
3.5
3.5
4.0
4.0
4445N-5
osi
0.2
1
4
9
16
20
"w.c. 0.3
1.7
6.9
15.6
27.7
34.6
Air Flow, not burning (scfh)
10900 9200
Air Flow, (scfh)
1000 2150
4350
3700
10300
Air Orifice UA-DA, (in. w.c.) Gas Pressure Stoic. "w.c.
0.1 0.2 0.2
1.0
2.6 3.6 3.2
5.5 8.3 7.3
10.3 13.8 12.3
13.0 17.0 15.2 800 1000 1000 600
0.9 0.7
Gas Pressure @ 10% excess air "w.c.
Max % Excess Air, ignition
600 1000
1400 1600 1000
1400 1600 1000
1000 1500 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
100 200
1400
500 200
— 30 22
500
700
Max % XS Fuel, ignition/flame signal
30 22
30 24
30 24
30 24
30 24
Flame Length (in) Stoic. Flame Diameter (in) Stoic.
4
4
4
4
4
4
4445N-6
osi
0.2
1
4
9
16
20
"w.c. 0.3
1.7
6.9
15.6
27.7
34.6
Air Flow, not burning (scfh)
17900 14400
Air Flow, (scfh)
1800 3400
6800
10600
15700
Air Orifice UA-DA, (in. w.c.) Gas Pressure Stoic. "w.c.
0.05
0.3
1.0 4.8 4.2
2.1
3.9 17.2 15.0 600 800 500 500
5.1
0.4 0.3
1.4
10.2 8.9
25.1 21.7 600 800 700 500
Gas Pressure @ 10% excess air "w.c.
1.1
Max % Excess Air, ignition
1000 1000 1200 1400 1200 1400 1000 1200
800 1200 1200 900
800 1200 600 600
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 24
30 24
30 24
30 24
30 24
30 25
Flame Length (in) Stoic. Flame Diameter (in) Stoic.
4
4
4
5
5
5
Bulletin 4445/4445N Page 4
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