Watts Aerco INN 1060N - Flue Vent Pressure Drop Tables

Innovation Water Heaters – Edge [i] Controller
Venting and Combustion Air Design Guide
TAG-0090_A • GF-5056 • 2/20/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 37 of 39
3.8. Flue Vent Pressure Drop Tables
The tables below list the pressure drop in flue vents in equivalent feet (eq. ft.) or equivalent meters
(eq. m.) for single Innovation-Edge water heaters at various duct diameters. All values are based
on the assumption of 140°F (60°C) Water Temperature and 70°F (21°C) Rise at Sea Level.
TABLE 9: Flue Vent Pressure Drop – Innovation 600N MBTU Water Heaters
Flue Vent
Diameter in
inches (mm)
Flue Velocity
in ft./sec.
(m/sec.)
Straight Run
in eq. ft. / foot
(eq. m/m)
90° elbow in
eq. ft.
(eq. m)
45° elbow
in eq. ft.
(eq. m)
Exit Loss
Horizontal
Termination
in eq. ft.
(eq. m)
Vertical
Termination
in eq. ft.
(eq. m)
4 (101.6)
28.6 (8.7)
2.2 (2.2)
12.1 (3.7)
9 (2.7)
10.6 (3.2)
19.7 (6)
6 (152.4)
12.7 (3.9)
0.3 (0.3)
1.7 (0.5)
1.3 (0.4)
2.1 (0.6)
3 (0.9)
8 (203.2)
7.2 (2.2)
0.1 (0.1)
0.4 (0.1)
0.3 (0.1)
0.7 (0.2)
1.2 (0.4)
10 (254)
4.6 (1.4)
0 (0)
0.2 (0.1)
0.1 (0)
0.3 (0.1)
0.5 (0.2)
* NOTE: 4" vent is limited to 80 eq. ft. (24.4 eq. m) total, use for short runs only
TABLE 10: Discharge Flue Vent Pressure Drop – Innovation 800N MBTU Water Heater
Flue Vent
Diameter in
inches (mm)
Flue Velocity
in ft./sec.
(m/sec.)
Straight Run
in eq. ft. / foot
(eq. m/m)
90° elbow
in eq. ft.
(eq. m)
45° elbow
in eq. ft.
(eq. m)
Exit Loss
Horizontal
Termination
in eq. ft.
(eq. m)
Vertical
Termination
in eq. ft.
(eq. m)
6 (152.4)
17 (5.2)
0.5 (0.5)
3 (0.9)
2.2 (0.7)
3.7 (1.1)
5.3 (1.6)
8 (203.2)
9.5 (2.9)
0.1 (0.1)
0.8 (0.2)
0.6 (0.2)
1.2 (0.4)
2.2 (0.7)
10 (254)
6.1 (1.9)
0 (0)
0.3 (0.1)
0.2 (0.1)
0.5 (0.2)
0.9 (0.3)
12 (304.8)
4.2 (1.3)
0 (0)
0.1 (0)
0.1 (0)
0.2 (0.1)
0.4 (0.1)
TABLE 11: Flue Vent Pressure Drop – Innovation 1060N
Flue Vent
Diameter in
inches (mm)
Flue Velocity
in ft./sec.
(m/sec.)
Straight Run
in eq. ft. / foot
(eq. m/m)
90° elbow
in eq. ft.
(eq. m)
45° elbow
in eq. ft.
(eq. m)
Exit Loss
Horizontal
Termination
in eq. ft.
(eq. m)
Vertical
Termination
in eq. ft.
(eq. m)
6 (152.4)
21.2 (6.5)
0.7 (0.7)
4.7 (1.4)
3.5 (1.1)
5.8 (1.8)
8.3 (2.5)
8 (203.2)
11.9 (3.6)
0.2 (0.2)
1.2 (0.4)
0.9 (0.3)
1.8 (0.5)
3.4 (1)
10 (254)
7.6 (2.3)
0.1 (0.1)
0.4 (0.1)
0.3 (0.1)
0.8 (0.2)
1.4 (0.4)
12 (304.8)
5.3 (1.6)
0 (0)
0.2 (0.1)
0.1 (0)
0.4 (0.1)
0.7 (0.2)
TABLE 12: Discharge Flue Vent Pressure Drop – Innovation 1350N MBTU Water Heater
Flue Vent
Diameter in
inches (mm)
Flue Velocity
in ft./sec.
(m/sec.)
Straight Run
in eq. ft. / foot
(eq. m/m)
90° elbow
in eq. ft.
(eq. m)
45° elbow
in eq. ft.
(eq. m)
Exit Loss
Horizontal
Termination
in eq. ft.
(eq. m)
Vertical
Termination
in eq. ft.
(eq. m)
6 (152.4)
28.6 (8.7)
1.3 (1.3)
8.6 (2.6)
6.4 (2)
10.6 (3.2)
15.2 (4.6)
8 (203.2)
16.1 (4.9)
0.3 (0.3)
2.2 (0.7)
1.7 (0.5)
3.4 (1)
6.2 (1.9)
10 (254)
10.3 (3.1)
0.1 (0.1)
0.8 (0.2)
0.6 (0.2)
1.4 (0.4)
2.6 (0.8)
12 (304.8)
7.2 (2.2)
0 (0)
0.3 (0.1)
0.3 (0.1)
0.7 (0.2)
1.2 (0.4)