Table 7: Combustion Air Pressure Drop Data - Thermal Solutions ARCTIC Series Installation & Operation Manual

Flue Vent Diameter Straight Length Equivalent
in. (mm)
6 (160)
8 (200)
8 (200)
10 (250)
8 (200)
10 (250)
12 (315)
8 (200)
10 (250)
12 (315)
8 (200)
10 (250)
12 (315)
10 (250)
12 (315)
14 (356)
10 (250)
12 (315)
14 (356)
12 (315)
14 (356)
16 (406)
12 (315)
14 (356)
16 (406)
12 (315)
14 (356)
16 (406)
12 (315)
14 (356)
16 (406)
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Table 7: Combustion Air Pressure Drop Data
90° Elbow Equivalent
ft/ft (m/m)
ARCTIC 1000 Pressure Drop in Equivalent Feet (Meters)
0.6 (0.182)
0.13 (0.039)
ARCTIC 1500 Pressure Drop in Equivalent Feet (Meters)
0.3 (0.091)
0.09 (0.027)
ARCTIC 2000 Pressure Drop in Equivalent Feet (Meters)
0.53 (0.161)
0.164 (0.049)
0.063 (0.019)
ARCTIC 2500 Pressure Drop in Equivalent Feet (Meters)
0.83 (0.250)
0.26 (0.079)
0.1 (0.03)
ARCTIC 3000 Pressure Drop in Equivalent Feet (Meters)
1.19 (0.362)
0.37 (0.112)
0.14 (0.042)
ARCTIC 3500 Pressure Drop in Equivalent Feet (Meters)
0.39 (0.118)
0.15 (0.045)
0.07 (0.021)
ARCTIC 4000 Pressure Drop in Equivalent Feet (Meters)
0.51 (0.155)
0.2 (0.06)
0.087 (0.026)
ARCTIC 4500 Pressure Drop in Equivalent Feet (Meters)
0.25 (0.076)
0.11 (0.033)
0.054 (0.016)
ARCTIC 5000 Pressure Drop in Equivalent Feet (Meters)
0.31 (0.094)
0.14 (0.042)
0.067 (0.02)
ARCTIC 5500 Pressure Drop in Equivalent Feet (Meters)
0.37 (0.112)
0.17 (0.051)
0.082 (0.024)
ARCTIC 6000 Pressure Drop in Equivalent Feet (Meters)
0.44 (0.134)
0.2 (0.06)
0.097 (0.295)
45° Elbow Equivalent
ft/ft (m/m)
6.25 (1.905)
1.32 (0.402)
3.03 (0.923)
0.92 (0.28)
5.26 (1.603)
1.64 (0.499)
0.63 (0.192) 0.314 (0.095)
8.3 (2.529)
2.56 (0.78)
0.98 (0.298)
12.5 (3.81)
3.7 (1.127)
1.41 (0.429)
3.92 (1.194)
1.49 (0.454)
0.67 (0.204)
5.13 (1.563)
1.96 (0.597)
0.87 (0.265)
2.5 (0.762)
1.1 (0.335)
0.55 (0.167)
3.13 (0.954)
1.35 (0.411)
0.67 (0.204)
3.7 (1.127)
1.64 (0.499)
0.81 (0.246)
4.55 (1.386)
1.96 (0.597)
0.97 (0.295)
Velocity
ft/ft (m/m)
3.13 (0.954)
0.658 (0.2)
1.49 (0.045)
0.46 (0.14)
2.63 (0.801)
0.82 (0.249)
4.17 (1.271)
1.28 (0.39)
0.49 (0.149)
5.9 (1.798)
1.85 (0.563)
0.7 (0.213)
1.96 (0.597)
0.75 (0.228)
0.33 (0.1)
2.56 (0.78)
0.97 (0.295)
0.44 (0.134)
1.23 (0.374)
0.55 (0.167)
0.27 (0.082)
1.54 (0.469)
0.68 (0.207)
0.34 (0.103)
1.85 (0.563)
0.82 (0.249)
0.41 (0.124)
2.22 (0.676)
0.98 (0.298)
0.49 (0.149)
(fpm)
1121
631
946
605
1264
809
562
1576
1009
701
1895
1213
842
1414
982
722
1616
1122
825
1264
928
711
1403
1030
789
1544
1134
868
1684
1237
947
19