Watts Aerco INN 1060N - Innovation 800 N Combustion Air Duct 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 31 of 39
3.7.3 Innovation 800N Combustion Air Duct Pressure Drop Tables
• Values for Straight Run are equivalent feet per foot or meters per meter
• Values for 90° Elbow, 45° Elbow, and Ent. Loss are equivalent feet (equivalent
millimeters)
TABLE 6: Innovation 800N MBTU Water Heater
Inlet Duct
& No.
Units
Duct
Section
Type
Outside Air Temperature
-30 °F
-15 °F
0 °F
20 °F
40 °F
60 °F
80 °F
100 °F
120 °F
-34 °C
-26 °C
-18 °C
-7 °C
4 °C
16 °C
27 °C
38 °C
49 °C
6" Duct
Single Unit
Straight Run
0.32
0.33
0.34
0.35
0.36
0.37
0.39
0.4
0.41
90° Elbow
1.44
1.51
1.58
1.69
1.8
1.92
2.05
2.19
2.34
(439)
(460)
(482)
(515)
(549)
(585)
(625)
(668)
(713)
45° Elbow
1.07
1.12
1.17
1.25
1.34
1.42
1.52
1.62
1.73
(326)
(341)
(357)
(381)
(408)
(433)
(463)
(494)
(527)
Ent. Loss
2.24
2.35
2.47
2.63
2.81
3.00
3.2
3.41
3.64
(683)
(716)
(753)
(802)
(856)
(914)
(975)
(1039)
(1109)
8" Duct
Single Unit
Straight Run
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.10
0.10
90° Elbow
0.37
0.39
0.4
0.43
0.46
0.49
0.52
0.56
0.6
(113)
(119)
(122)
(131)
(140)
(149)
(158)
(171)
(183)
45° Elbow
0.28
0.29
0.31
0.33
0.35
0.37
0.4
0.42
0.45
(85)
(88)
(94)
(101)
(107)
(113)
(122)
(128)
(137)
Ent. Loss
0.71
0.74
0.78
0.83
0.89
0.95
1.01
1.08
1.15
(216)
(226)
(238)
(253)
(271)
(290)
(308)
(329)
(351)
8" Duct
Two Units
Straight Run
0.24
0.25
0.26
0.28
0.3
0.32
0.34
0.36
0.39
90° Elbow
1.47
1.54
1.62
1.73
1.84
1.97
2.1
2.24
2.39
(448)
(469)
(494)
(527)
(561)
(600)
(640)
(683)
(728)
45° Elbow
1.11
1.16
1.22
1.30
1.39
1.48
1.58
1.69
1.8
(338)
(354)
(372)
(396)
(424)
(451)
(482)
(515)
(549)
Ent. Loss
2.84
2.98
3.13
3.33
3.56
3.79
4.05
4.32
4.61
(866)
(908)
(954)
(1015)
(1085)
(1155)
(1234)
(1317)
(1405)
10" Duct
Two Units
Straight Run
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.13
90° Elbow
0.52
0.55
0.58
0.61
0.65
0.7
0.75
0.8
0.85
(158)
(168)
(177)
(186)
(198)
(213)
(229)
(244)
(259)
45° Elbow
0.4
0.42
0.44
0.47
0.5
0.53
0.57
0.61
0.65
(122)
(128)
(134)
(143)
(152)
(162)
(174)
(186)
(198)
Ent. Loss
1.16
1.22
1.28
1.37
1.46
1.55
1.66
1.77
1.89
(354)
(372)
(390)
(418)
(445)
(472)
(506)
(539)
(576)