Watts Aerco INN 1060N - Page 29

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 29 of 39
TABLE 5: Innovation 600N MBTU (176 kW) Water Heaters
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
Inlet Duct
& No.
Units
Duct
Section
Type
-34 °C
-26 °C
-18 °C
-7 °C
4 °C
16 °C
27 °C
38 °C
49 °C
10" Duct
Three
Units
Straight Run
0.10
0.1
0.11
0.12
0.12
0.13
0.14
0.15
0.16
90° Elbow
0.67
0.7
0.73
0.78
0.84
0.89
0.95
1.01
1.08
(204)
(213)
(223)
(238)
(256)
(271)
(290)
(308)
(329)
45° Elbow
0.51
0.54
0.56
0.6
0.64
0.68
0.73
0.78
0.83
(155)
(165)
(171)
(183)
(195)
(207)
(223)
(238)
(253)
Ent. Loss
1.48
1.56
1.63
1.74
1.86
1.98
2.12
2.26
2.41
(451)
(475)
(497)
(530)
(567)
(604)
(646)
(689)
(735)
12" Duct
Three
Units
Straight Run
0.04
0.04
0.04
0.05
0.05
0.05
0.06
0.06
0.07
90° Elbow
0.29
0.31
0.32
0.34
0.36
0.39
0.42
0.44
0.47
(88)
(94)
(98)
(104)
(110)
(119)
(128)
(134)
(143)
45° Elbow
0.23
0.24
0.25
0.26
0.28
0.3
0.32
0.34
0.37
(70)
(73)
(76)
(79)
(85)
(91)
(98)
(104)
(113)
Ent. Loss
0.72
0.75
0.79
0.84
0.9
0.96
1.02
1.09
1.16
(219)
(229)
(241)
(256)
(274)
(293)
(311)
(332)
(354)
12" Duct
Four Units
Straight Run
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
90° Elbow
0.52
0.54
0.57
0.61
0.65
0.69
0.74
0.79
0.84
(158)
(165)
(174)
(186)
(198)
(210)
(226)
(241)
(256)
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
1.27
1.33
1.4
1.49
1.59
1.7
1.81
1.94
2.06
(387)
(405)
(427)
(454)
(485)
(518)
(552)
(591)
(628)
14" Duct
Four Units
Straight Run
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
90° Elbow
0.26
0.27
0.29
0.3
0.32
0.35
0.37
0.39
0.42
(79)
(82)
(88)
(91)
(98)
(107)
(113)
(119)
(128)
45° Elbow
0.20
0.21
0.22
0.24
0.25
0.27
0.29
0.31
0.33
(61)
(64)
(67)
(73)
(76)
(82)
(88)
(94)
(101)
Ent. Loss
0.69
0.72
0.76
0.81
0.86
0.92
0.98
1.04
1.11
(210)
(219)
(232)
(247)
(262)
(280)
(299)
(317)
(338)
NOTES: 1) Calculation assumes 125 scfm (3.54 m
3
/min) per heater at full fire rate
2) Units for "Straight Run" pressure drop values are equivalent feet per foot (eq.
m/m)
3) Units for "Elbows" and "Ent. Loss" are equivalent feet per item (eq. m/item)