P36-10 Zero Clearance Direct Vent Gas Fireplace | 13|13installationInstall Side Nailing Strips, Top FacingSupport, and Top Standoffs before unit isslipped into position. See the "Unit As-sembly Prior to Installation" section forassembly details.1) Determine the total thickness of facing mate-rial (e.g. non combustible plus ceramic tiles)to allow the finished surface to be flush withthe front of the unit. Total facing thickness canvary from 1/2" (13mm) to 1-1/4" (32mm) thick.Add a second steel stud at midpoint for easeof installation/securing the non combustibleboard. See Diagram 5.FRAMING AND FINISHING2) Frame in the enclosure for the unit withframing material. The framed opening is40-3/4" high x 36-1/4" wide x 12-3/4" deep(1036mm high x 921mm wide x 324mmdeep).Note: Header must be installed vertically. IfHeader is installed horizontally, it must besteel.3) For exterior walls, insulate the enclosureto the same degree as the rest of thehouse, apply vapour barrier and drywall,as per local installation codes. (Do notinsulate the fireplace itself.)4) The top of the unit must not be closerthan 32" (813mm) to the ceiling.Note: 40-1/2" (1029mm) is the minimumheight for both flex termination orrigid pipe venting.All other framing may be of combustiblematerials, i.e. 2 x 4, 2 x 6Note: The unit does not have to becompletely enclosed in a chase. Theclearance on top of the unit is 0" tothe standoffs so combustible buildingmaterials can be laid directly on topof the standoffs. You must maintain1-1/2" (38mm) clearance from thevent to combustible materials for flex(1-1/4" for Rigid Pipe).5) Use steel studs for framing where the1-1/2" (38mm) clearance from the vent tocombustible material cannot be maintained,e.g. front top header.Note: Secure the 12" x 36" non-combustible boardsupplied with this unit is directly above the unit asshown. Install a steel stud directly above the unitas shown to secure the non -combustible material.30-1/2"(775mm)36"(914mm)Non-combustibleMaterial (supplied)Steel stud on edge2nd Steel stud on edge(install after unit in place)12"(305mm)Wood studWood studDrywallFraming DimensionsA B C D36-1/4" 40-3/4" 12-3/4" 46"*921mm 1036mm 324mm 1168mm** 'D' is Minimum height to combustible materialsincluding the Minimum 2" (51mm) Top clearanceto the Horizontal Vent.Diagram 1Diagram 2Diagram 3Diagram 4Diagram 6Diagram 5Steel stud onedge