Section 3 — Stack and Intake Vent Sizing and Installation
Part No. 750-263
3-11
2. Stack design using direct vent combustion
Table 3-2
STACK SIZING USING OUTSIDE AIR FOR COMBUSTION
Boiler
Boiler Flue Connection Combustion Air
Duct
Connection
Maximum length of
Flue Gas Vent in
Feet*
Maximum length of
Air Intake Duct in
Feet**
CFC 500
6" Standard
4"
75
75
6"
80
80
CFC750
6" Standard
4"
40
40
6"
50
50
CFC1000
8" Standard
6"
60
60
6" Option
6"
40
40
10" Option
6"
80
80
CFC1500
10" Standard
6"
40
40
8"
60
60
8" Option
6"
30
30
8"
40
40
12" Option
6"
60
60
8"
80
80
CFC1800
12" Standard
6"
50
50
8"
80
80
10" Option
6"
40
40
8"
55
55
CFC 2500
12" Standard
8"
100
100
* Each additional 90 elbow equals 5 equivalent feet of ductwork. Subtract from the maximum
or minimum length accordingly.
** Increasing the diameter of the air intake will reduce the pressure drop and thereby allow
longer total vent lengths.
Maximum allowable pressure drop in combustion air intake duct is - 0.25" w.c.
Summary of Contents for CFC-1000
Page 35: ...Section 2 Installation Part No 750 263 2 21 Figure 2 23 Gas Piping ...
Page 47: ...Section 2 Installation Part No 750 263 2 33 Figure 2 41 Electrical Connection Diagram ...
Page 49: ...Section 2 Installation Part No 750 263 2 35 Figure 2 43 CFC Wiring Diagram dual fuel units ...
Page 50: ...Section 2 Installation 2 36 Part No 750 263 ...
Page 70: ...Section 3 Stack and Intake Vent Sizing and Installation 3 20 Part No 750 263 ...
Page 102: ...Section 4 CFC Commissioning 4 32 Part No 750 263 ...
Page 108: ...Section 5 Service and Maintenance 5 6 Part No 750 263 ...
Page 113: ...Section 6 Parts Part No 750 263 6 5 Figure 6 3 Casing Table 6 5 Casing parts ...
Page 117: ...Section 6 Parts Part No 750 263 6 9 Figure 6 7 Electrical assemblies single fuel ...
Page 123: ...APPENDIX A CB FALCON CONTROLLER ...
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Page 244: ...CB FALCON 750 265 120 ...
Page 245: ...APPENDIX B CB FALCON PLUG IN MODULE ...
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Page 251: ...APPENDIX C GAS VALVE ...
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Page 269: ...APPENDIX D CB FALCON MODBUS COMMUNICATION ...
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