506326-01 Page 3 of 20Issue 0941Minimum ClearancesFigure 1Top ViewClearance to combustible materials is 0" at the side, top, and front of plenum. If accessibility clearances aregreater than clearances to combustibles, accessibility clearances take precedence.The front of the unit must be accessible for service. If the unit is enclosed, providing a door or access panelopposite the front of the unit is the preferred method of providing access. The door or access panel must beat least 30" wide (centered on the unit) and as tall as the unit.IMPORTANTThe unit must be installed with approved wall sleeve and grille accessories for safe operation. Improper installa-tions could result in property damage, personal injury, or death.* Minimum clearance to combustibles for the frontof the unit is 1". Added clearance must beprovided for the gas supply line and drain trapinstallation.1"Min.1"Min.Front of Unit Clearance toFront of Unit*PlenumExterior WallWall Sleeve(one each side)Interior WallClearances*Mounting Strap(one each side)3/4" Plywood RiserFloorPlatform (field supplied) - Must be level with sill plate of hole in exterior wall4" Min.Front of UnitSill PlateSide Viewunit must be supported by platform