Regency Gemfire™ Gas Fireplace 25INSTALLATION• Vent must be supported at offsets.• Firestops are required at each floor level andwhenever passing through a wall.• Maintain clearances to combustibles as listed inthe "Clearances" section.• Refer to the "Vent Restrictor Position" sectionfor details on how to change the vent restrictorfrom the factory setting of Set 1 to Set 3 or Set 4if required.Note: Must use optional flue adaptor when usingRigid Pipe (Part # 770-994).Maximum: 40 ft. (12.2m)Minimum8’6” (2.6m)Min. 44”(1118mm)Max. 10’ (3m)(centerline to centerline)Maximum: 27 ft. (8.2m)02464081012141618202224262830Vertical Height (Feet)323436386 8Horizontal (Feet)2 0 4 10 1212 16 1814Vent Restrictor on Set 3Vent Restrictor on Set 4Vent Restrictor on Set 1(factory setting)Minimum length of pipebetween elbows 12” (305mm)VENTING ARRANGEMENTSALLOWABLE VERTICAL TERMINATIONS FOR GEM54-LPG/ULPGThe shaded area in the diagram shows all allowablecombinations of straight vertical and offset to verticalterminations, using two 90 o elbows, with Rigid Pipe VentingSystems for Natural Gas. Two 45o elbows equal to one 90 oelbow. Maximum of four 45 o elbows allowed.Please note min. 1 ft/305mm between 90oelbows is required."THIS UNIT MUST ALWAYSTERMINATE / VENTDIRECTLY TO THE OUTDOORS."