Regency ® P33-4 Zero Clearance Direct Vent Gas Fireplace 15INSTALLATIONNote: When constructing the framed opening, please ensure there isaccess to install the gas lines when the unit is installed.3) For exterior walls, insulate the enclosure to the same degree as the restof the house, apply vapour barrier and drywall, as per local installationcodes. (Do not insulate the fireplace itself.)WARNING: Failure to insulate and add vapor barriers to the insideof the exterior wall will result in operational and performance prob-lems including, but not limited to: excessive condensation on glassdoors, poor fl ame package, carbon, blue flames etc. These are notproduct related issues.FRAMING & FINISHING WITH CONTEMPORARY FACEPLATE2) Frame in the enclosure for the unit with framing material.Wood,1) Determine the total thickness of facing material (e.g. drywall, wood plusceramic tiles) to allow the finished surface to be flush with the front of theunit. Total facing thickness can vary from 1/2" (13mm) to 1-1/4" (32mm)thick.NOTE: Facing material may not protrude beyond unit, otherwise the op-tional accesories will not be able to be mounted to the unit.Install Side Nailing Strips, and Top FacingSupport before unit is slipped into position.See "Unit Assembly Prior to Installation"Section4) Combustible material may be brought up to the top and sides of the unitand be covered with wood, drywall, ceramic tiles, bricks, rock or othersuitable combustible finishing materials.Note: The unit does not have to be completely enclosed in a chase. Theclearance on top of the unit is 0" to the standoffs so combustiblebuilding materials can be laid directly on top of the standoffs. Youmust maintain clearance from the vent to combustible materialsfor fl ex or for Rigid Vent (Refer to "Clearances" Section).5) Use steel studs for framing where the 1-1/2" (38mm) clearance from thevent to combustible material cannot be maintained.The HeatWave Duct Kit has differentclearance and framing requirements,check the HeatWave manual for details.Important:If the Contemporary Faceplate is used on the P33-NG4/P33-LP4Gas Fireplace, the burner orifice (Both NG/LP supplied in thispackage) must be replaced and an overlay decal (also supplied withkit) must be affixed to the current serial number decalsupplied with unit.Note: Also see framing dimensions for this optional front if installedon the P33-4 unit.Note: Unit must be raised up by 1' to allow for faceplateinstallation.NG LPCurrent P33-4 orifice size: #44 #54Must replace with: #47 #56Warning: Fire hazard is an extreme risk if these changes are notadhered to.