GF-5050
Innovation Series & ReCon Water Heater
TAG-0043_0Q
Venting and Combustion Air Guide
Page
28
of
39
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
12/01/2016
3.7. COMBUSTION AIR DUCT PRESSURE DROP TABLES
The tables in this section list the pressure drop in sealed combustion air ducts for the Innovation and
ReCon models at various outside air temperatures and duct diameters.
Table 5: Innovation 600 MBTU (176 kW)
Water Heaters
–
In equivalent feet (mm)
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
6" Duct
Single Unit
Straight Run
0.19
0.2
0.2
0.21
0.21
0.22
0.23
0.24
0.24
(58)
(61)
(61)
(64)
(64)
(67)
(70)
(73)
(73)
90° Elbow
0.82
0.86
0.9
0.96
1.02
1.09
1.16
1.24
1.32
(250)
(262)
(274)
(293)
(311)
(332)
(354)
(378)
(402)
45° Elbow
0.60
0.63
0.67
0.71
0.76
0.81
0.86
0.92
0.98
(183)
(192)
(204)
(216)
(232)
(247)
(262)
(280)
(299)
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)
8" Duct
Single Unit
Straight Run
0.05
0.05
0.05
0.05
0.05
0.05
0.06
0.06
0.06
(15)
(15)
(15)
(15)
(15)
(15)
(18)
(18)
(18)
90° Elbow
0.21
0.22
0.23
0.24
0.26
0.28
0.30
0.32
0.34
(64)
(67)
(70)
(73)
(79)
(85)
(91)
(98)
(104)
45° Elbow
0.16
0.16
0.17
0.18
0.2
0.21
0.22
0.24
0.25
(49)
(49)
(52)
(55)
(61)
(64)
(67)
(73)
(76)
Ent. Loss
0.40
0.42
0.44
0.47
0.5
0.54
0.57
0.61
0.65
(122)
(128)
(134)
(143)
(152)
(165)
(174)
(186)
(198)
8" Duct
Two Units
Straight Run
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.22
0.23
(43)
(46)
(49)
(52)
(55)
(58)
(61)
(67)
(70)
90° Elbow
0.83
0.87
0.92
0.98
1.04
1.11
1.19
1.27
1.35
(253)
(265)
(280)
(299)
(317)
(338)
(363)
(387)
(411)
45° Elbow
0.63
0.66
0.69
0.74
0.79
0.84
0.90
0.96
1.02
(192)
(201)
(210)
(226)
(241)
(256)
(274)
(293)
(311)
Ent. Loss
1.61
1.69
1.77
1.89
2.02
2.15
2.30
2.45
2.61
(491)
(515)
(539)
(576)
(616)
(655)
(701)
(747)
(796)
10" Duct
Two Units
Straight Run
0.05
0.05
0.05
0.06
0.06
0.06
0.07
0.07
0.08
(15)
(15)
(15)
(18)
(18)
(18)
(21)
(21)
(24)
90° Elbow
0.30
0.31
0.33
0.35
0.37
0.40
0.42
0.45
0.48
(91)
(94)
(101)
(107)
(113)
(122)
(128)
(137)
(146)
45° Elbow
0.23
0.24
0.25
0.27
0.28
0.3
0.32
0.35
0.37
(70)
(73)
(76)
(82)
(85)
(91)
(98)
(107)
(113)
Ent. Loss
0.66
0.69
0.73
0.77
0.83
0.88
0.94
1.00
1.07
(201)
(210)
(223)
(235)
(253)
(268)
(287)
(305)
(326)
