Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design. The System Design and Installation Guide is an additional resource.
Model | A | B |
---|---|---|
3FC12 | 3" | 12" |
3FC24 | 3" | 24" |
3FC3 | 3" | 3' |
3FC4 | 3" | 4' |
3FC5 | 3" | 5' |
4FC12 | 4" | 12" |
4FC24 | 4" | 24" |
4FC3 | 4" | 3' |
4FC4 | 4" | 4' |
4FC5 | 4" | 5' |
5FC12 | 5" | 12" |
5FC24 | 5" | 24" |
5FC3 | 5" | 3' |
5FC4 | 5" | 4' |
5FC5 | 5" | 5' |