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 | Size | Dim. A | Dim. B |
---|---|---|---|
10CU | 10" | 15-3/4" | 7-1/2" |
12CU | 12" | 19" | 9" |
14CU | 14" | 22" | 11" |
16CU | 16" | 25" | 12" |
18CU | 18" | 28 1/4" | 13 1/2" |
20CU | 20" | 31 1/2" | 15" |
22CU | 22" | 34 1/2" | 16 1/2" |
24CU | 24" | 37 3/4" | 18" |
26CU | 26" | 42" | 19 1/2" |
28CU | 28" | 44" | 21" |
30CU | 30" | 48" | 22 1/2" |