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.
Model Number | Size | A | B |
---|---|---|---|
3RWW | 3" | 8" | 5 1/2" |
4RWW | 4" | 10" | 6" |
5RWW | 5" | 12" | 7" |
6RWW | 6" | 14" | 7 1/2" |