City Series CV50E Direct Vent Gas Fireplace | 1City Series CV50E Direct Vent Gas FireplaceMODEL CV50E-NG CV50E-LPFuel Type Natural Gas PropaneMinimum Supply Pressure 5” W.C. (1.25 kPa) 11” W.C. (2.73 kPa)Manifold Pressure - High 3.8” W.C. (0.94 kPa) 10.5” W.C. (2.62 kPa)Manifold Pressure - Low 1.1” W.C. (0.27 kPa) 2.9” W.C. (0.72 kPa)Orifice Size -Altitude 0-4500 ft # 36 DMS # 52 DMSMinimum InputAltitude 0-4500 ft. (0-1372m)19,000 Btu/h(5.56 kW)17,000 Btu/h(4.98 kW)Maximum InputAltitude 0-4500 ft. (0-1372m)35,000 Btu/h(10.25 kW)33,000 Btu/h(9.66 kW)Vent Sizing 5” Inner / 8” Outer 5” Inner / 8” OuterCSA P.4.1. 57.49% 60.55%DimensionsNote: Height Dimension is taken with leveling legs fully inserted and may vary depending on the height of the leveling legs, when unscrewed or extended.Dimensions will appear as (inches)" / (metric) mm throughout this manual. The inches are rounded to the nearest 1/16" when converted, when greateraccuracy is required, use the metric dimensions.Note: These units are non-load bearing.ALL PICTURES / DIAGRAMS SHOWN THROUGHOUT THIS MANUAL ARE FOR ILLUSTRATION PURPOSES ONLY. ACTUAL PRODUCT MAYVARY DUE TO PRODUCT ENHANCEMENTS.18"457mm10 316 "258mm13 38 "340mm54 38 "1382mm37"940mm20 1516 "532mm11 78 "301mm9 18 "231mm49 316 "1249mm8"203mm5"127mm8 12 "216mm45 78 "1165mmPAGE 7DIMENSIONS20-7/16''(519 mm)NOTE: This model comes with a 5” inner and 8” outer collar (127 mm x 203 mm) which must be reduced to 4” inner x 6-5/8” outer(102 mm x 168 mm) in all applications when used as a power vent system. See power vent manual for details.