67
BFIT 1000 Pressure Drop in Equivalent Feet (Flue Vent)
Flue Vent
Diameter
(in.)
Straight
Length (eq. ft/
ft)
90
0
Elbow
(eq. ft/Bend)
45
0
Elbow
(eq. ft/
Bend)
Velocity
(fpm)
6
1.40
14.28
6.90
1478
8
0.3
3.0
1.54
831
10
0.09
0.95
0.48
532
BFIT 1250 Pressure Drop in Equivalent Feet (Flue Vent)
6
2.17
2.17
11
1845
8
0.48
4.76
4.17
1038
10
0.15
1.48
0.74
664
BFIT 1500 Pressure Drop in Equivalent Feet (Flue Vent)
6
3.125
30
15
2211
8
0.69
6.90
3.45
1244
10
0.21
2.13
1.0
796
BFIT 2000 Pressure Drop in Equivalent Feet (Flue Vent)
6
5.55
54
27.59
2950
8
1.22
12.5
6.00
1660
10
0.377
3.77
1.87
1062
BFIT 1000 Pressure Drop in Equivalent Feet (Combustion Air Duct)
Flue Vent
Diameter
(in.)
Straight Length
(eq. ft/ft)
90
0
Elbow
(eq. ft/Bend)
45
0
Elbow
(eq. ft/Bend)
Velocity
(fpm)
6
0.73
7.4
3.70
1070
8
0.16
1.6
0.80
602
10
0.05
0.5
0.25
385
BFIT 1250 Pressure Drop in Equivalent Feet (Combustion Air Duct)
6
1.14
11
5.71
1340
8
0.25
2.25
1.25
754
10
0.078
0.78
0.40
482
BFIT 1500 Pressure Drop in Equivalent Feet (Combustion Air Duct)
6
1.67
16.67
8.33
1610
8
0.36
3.64
1.82
906
10
0.11
1.14
0.57
580
BFIT 2000 Pressure Drop in Equivalent Feet (Combustion Air Duct)
6
2.94
28.75
14.28
2150
8
0.64
6.45
3.2
1210
10
0.2
2
1
744
APPENDIX E: -VENT AND COMBUSTION AIR PRESSURE DROP DATA
The Combustion pressure drop through the vent and combustion air duct shall not exceed 200 equivalent feet.
Use tables below to calculate the pressure drop in the vent/combustion air system.
Содержание BFIT 1000
Страница 9: ...9 Figure 1 BFIT MODEL 1000 2000 ...
Страница 12: ...12 IV BFIT Component Identification continued Figure 2 Component Identification ...
Страница 13: ...13 IV BFIT Component Identification continued Figure 3 Component Identification ...
Страница 52: ...52 Figure 24 Operating Instructions XII System Start up continued ...
Страница 66: ...66 APPENDIX D INLET OUTLET WATER AND FLUE OUTLET TEMPERATURE SENSOR RESISTANCE VOLTAGE CHART ...
Страница 68: ...68 ...