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 # | Inlet Size(s) | Outlet Size | A |
---|---|---|---|
3EIX4 | 3" | 4" | 6" |
*EIX5 | 3", 4" | 5" | 6" |
*EIX6 | 3", 4", 5" | 6" | 6" |
*EIX7 | 3", 4", 5", 6" | 7" | 6" |
*EIX8 | 4", 5", 6" | 8" | 6" |
7RIX8 | 7" | 8" | 6" |
*EIX9 | 5", 6" | 9" | 7" |
*RIX9 | 7", 8" | 9" | 7" |
6EIX10 | 6" | 10" | 7" |
*RIX10 | 7". 8", 9" | 10" | 7" |
*RIX12 | 7", 8", 9", 10" | 12" | 7" |
*RIX14 | 8", 9", 10", 12" | 14" | 7" |
*RIX16 | 9", 10", 12", 14" | 16" | 6" |
*RIX18 | 10", 12", 14", 16" | 18" | 6" |
*RIX20 | 12", 14", 16", 18" | 20" | 6" |
*RIX22 | 14", 16", 18", 20" | 22" | 6" |
*RIX24 | 16", 18", 20", 22" | 24" | 6" |
*RIX26 | 18", 20", 22", 24" | 26" | 7" |
*RIX28 | 20", 22", 24", 26" | 28" | 7" |
*RIX30 | 22", 24", 26", 28" | 30" | 7" |
*denotes the inlet (smaller size) to complete model number