Regency ® PG36-3 Gas Log Fireplace 15INSTALLATIONFLUEING ARRANGEMENTS - VERTICAL TERMINATIONSSIMPSON DURA-VENT CO AXIAL FLUE GS SYSTEM (LPG & NG)The PG36 is approved for a 23 ft. (7.0m) vertical, with a maximum 12 ft. (3.7m) horizontal offset usingtwo 90o elbows (two 45 o elbows equal one 90o elbow) with Simpson Dura-Vent Co Axial Flue GS fluesystems for LPG and NG, as per diagram 1.The PG36 is approved for a 37 ft. (11.3m) straight vertical, including a 20" (0.5m) horizontal offsetusing two 90 o elbow (two 45 o elbows equal one 90o elbow) with Simpson Dura-Vent Co Axial FlueGS flue systems for LPG and NG, as per the diagram 2.• Flue must be supported at offsets• Maintain clearances to combustibles as listed in the "Clearances," "Locating Your GasFireplace," "Combustible Mantels," "Mantel Leg Clearances" & "Framing and Finishing"sections.Note: Must use optional flue adapter when using Simpson Dura-Vent pipe(Part # 510-994).Diagram 1 Diagram 2