Bulletin 4445/4445N
Page 4
Natural Gas, USCS
Main Air Pressure, (UA pressure tap), "w.c.
Engineering Data | 4445N Tempest®
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
Air Flow, (scfh)
730
1750
3450
5300
7300
8200
Air
Orifi ce UA-DA, (in. w.c.)
0.2
1.3
5.0
11.8
21.2
26.6
Gas Pressure @ Stoic. "w.c.
0.3
1.7
5.0
10.8
17.9
23.7
Gas Pressure @ 10% excess air "w.c.
0.2
1.4
4.5
9.0
16.2
20.6
Max % Excess Air, ignition
400
1400
1700
1400
1400
800
Max % Excess Air, Flame Rod fl ame signal
400
1300
1200
1200
1300
1200
Max % Excess Air, UV fl ame signal S, M length
400
1300
1600
1500
1400
1300
Max % Excess Air, UV fl ame signal L, XL Length
400
900
1400
1000
1300
1200
Max % XS Fuel, ignition/fl ame signal
30
30
30
30
30
30
Flame Length (in)
17
19
20
21
22
25
Flame Length (in)
3.5
3.5
4.0
4.0
4.5
4.5
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
Air Flow, (scfh)
1000
2150
4350
3700
9200
10300
Air
Orifi ce UA-DA, (in. w.c.)
0.1
1.0
2.6
5.5
10.3
13.0
Gas Pressure Stoic. "w.c.
0.2
0.9
3.6
8.3
13.8
17.0
Gas Pressure @ 10% excess air "w.c.
0.2
0.7
3.2
7.3
12.3
15.2
Max % Excess Air, ignition
600
1000
1400
1400
1000
800
Max % Excess Air, Flame Rod fl ame signal
100
1400
1600
1600
1500
1000
Max % Excess Air, UV fl ame signal S, M length
200
500
1000
1000
1000
1000
Max % Excess Air, UV fl ame signal L, XL Length
—
200
500
700
1000
600
Max % XS Fuel, ignition/fl ame signal
30
30
30
30
30
30
Flame Length (in) Stoic.
22
22
24
24
24
24
Flame Length (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
Air Flow, (scfh)
1800
3400
6800
10600
14400
15700
Air
Orifi ce UA-DA, (in. w.c.)
0.05
0.3
1.0
2.1
3.9
5.1
Gas Pressure Stoic. "w.c.
0.4
1.4
4.8
10.2
17.2
25.1
Gas Pressure @ 10% excess air "w.c.
0.3
1.1
4.2
8.9
15.0
21.7
Max % Excess Air, ignition
1000
1000
800
800
600
600
Max % Excess Air, Flame Rod fl ame signal
1200
1400
1200
1200
800
800
Max % Excess Air, UV fl ame signal S, M length
1200
1400
1200
600
500
700
Max % Excess Air, UV fl ame signal L, XL Length
1000
1200
900
600
500
500
Max % XS Fuel, ignition/fl ame signal
30
30
30
30
30
30
Flame Length (in) Stoic.
24
24
24
24
24
25
Flame Length (in) Stoic.
4
4
4
5
5
5
