Watts Aerco INN 1060N - Page 32

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 32 of 39
TABLE 6: Innovation 800N MBTU Water Heater – Continued
Inlet Duct
& No.
Units
Duct
Section
Type
Outside Air Temperature (°F)
-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
10" Duct
Three
Units
Straight Run
0.17
0.18
0.18
0.2
0.21
0.22
0.24
0.25
0.27
90° Elbow
1.18
1.23
1.29
1.38
1.47
1.57
1.68
1.79
1.91
(360)
(375)
(393)
(421)
(448)
(479)
(512)
(546)
(582)
45° Elbow
0.9
0.94
0.99
1.06
1.13
1.2
1.28
1.37
1.46
(274)
(287)
(302)
(323)
(344)
(366)
(390)
(418)
(445)
Ent. Loss
2.62
2.74
2.88
3.07
3.28
3.50
3.73
3.98
4.25
(799)
(835)
(878)
(936)
(1000)
(1067)
(1137)
(1213)
(1295)
12" Duct
Three
Units
Straight Run
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
90° Elbow
0.51
0.54
0.57
0.6
0.64
0.69
0.73
0.78
0.83
(155)
(165)
(174)
(183)
(195)
(210)
(223)
(238)
(253)
45° Elbow
0.4
0.42
0.44
0.47
0.5
0.53
0.57
0.6
0.64
(122)
(128)
(134)
(143)
(152)
(162)
(174)
(183)
(195)
Ent. Loss
1.26
1.32
1.39
1.48
1.58
1.69
1.8
1.92
2.05
(384)
(402)
(424)
(451)
(482)
(515)
(549)
(585)
(625)
12" Duct
Four Units
Straight Run
0.12
0.12
0.13
0.14
0.15
0.15
0.17
0.18
0.19
90° Elbow
0.91
0.96
1.00
1.07
1.14
1.22
1.3
1.39
1.48
(277)
(293)
(305)
(326)
(347)
(372)
(396)
(424)
(451)
45° Elbow
0.71
0.74
0.78
0.83
0.88
0.94
1.01
1.07
1.15
(216)
(226)
(238)
(253)
(268)
(287)
(308)
(326)
(351)
Ent. Loss
2.24
2.35
2.47
2.63
2.81
3.00
3.20
3.41
3.64
(683)
(716)
(753)
(802)
(856)
(914)
(975)
(1039)
(1109)
14" Duct
Four Units
Straight Run
0.05
0.06
0.06
0.06
0.07
0.07
0.08
0.08
0.09
90° Elbow
0.46
0.48
0.50
0.54
0.57
0.61
0.65
0.70
0.74
(140)
(146)
(152)
(165)
(174)
(186)
(198)
(213)
(226)
45° Elbow
0.36
0.37
0.39
0.42
0.45
0.48
0.51
0.54
0.58
(110)
(113)
(119)
(128)
(137)
(146)
(155)
(165)
(177)
Ent. Loss
1.21
1.27
1.33
1.42
1.52
1.62
1.73
1.84
1.97
(369)
(387)
(405)
(433)
(463)
(494)
(527)
(561)
(600)
NOTES: 1) Calculation assumes 166 scfm (4.70 m
3
/min) per heater at full fire rate
2) Units for "Straight Run" pressure drop values are (eq. ft. / foot)
3) Units for "Elbows" and "Ent. Loss" are (equivalent feet / item)