VENTILATION REQUIREMENTSWARNING: Carbon Monoxide can causenausea, fainting, or death. Inadequate ven-tilation or partial blockage of the refrigera-tor’s flue can result in increased carbonmonoxide emissions when operating in thegas mode. To prevent the emission of lev-els of carbon monoxide, installation mustassure complete isolation of the livingspace of the R.V. from the refrigerator’scombustion system. Follow Norcold’s Ven-tilation and Installation recommendationsexplicity.Venting is required in an R.V. refrigerator installa-tion to remove the products of combustion, to isolatethe living space of the vehicle from the combustionsystem of the refrigerator, to remove the excess heatfrom the generator area of the refrigerator’s coolingsystem, and to remove the heat that is extractedfrom the refrigerator cabinet.Certified installation requires that one intake (lower)and one exhaust (upper) be used. For the models6052, 6053, 652, and 653, the installer has the op-tion of exhausting through the roof or through an up-per side wall vent. Whether roof or side wall exhaustventing, the specified vent kit must be installed asdirected by this manual. To insure adequate refrig-erator performance, a continuous air flow is requiredacross the refrigerator’s cooling system.The air passage from the intake vent to the refrigera-tor coils and from the refrigerator coils through theexhaust vent must be unobstructed.TABLE 1DIMENSIONS (INCHES) for Vent Kits 2, 3, and 4The vents for these refrigerators are certified byA.G.A. and CGA and must be installed as directedby this manual without modification. Any deviationor substitution:* Can result in carbon monoxide levels in the livingspace of the vehicle.* Will void the agencies’ certification.* Will void the refrigerator warranty.* Will effect refrigerator performance.The intake vent (lower) also serves as a access(service entrance) door. The bottom of the intakevent opening must be flush with the surface on whichthe refrigerator is mounted. This configuration allowsany leaking propane to ventilate to the outside.A.G.A. And CGA certification permits installing therefrigerator with zero (0) inches minimum clearancebetween the refrigerator and any adjacent walls. Thiscertification does not specify any maximum clear-ance. However, to insure adequate air flow acrossthe cooling system, the clearance must be mini-mized. The combination of the two vents and theminimum clearances provide the necessary air flowthrough the creation of a natural draft, or "chimneyeffect" across the cooling system.Certified Vent KitsKit Number Certified LowerVent DoorCertifiedRoof Jack Models2 & 3615998616009616010617778615791 All ModelsKit Number Certified LowerVent DoorCertifiedUpper SideExhaustModels46159986160096160106177786174856052, 6053652, 653ONLYCut - Out Dimension (inches)Roof Jack Lower Intake Vent ApprovedModelsPart No. Type Length Width Height Width Radius617778 Plastic - - - - 13 3/4 21 1/2 - - All Models616010 Sq. Corner - - - - 13 3/4 21 3/4 - - All Models616009 Rad. corner - - - - 13 3/4 21 7/8 3 1/4 All Models615998 Rad. Corner - - - - 13 3/4 21 7/8 3 1/4 All Models617485 Upper Sidevent-- -- 7 1/4 18 -- 6052, 6053652, 653615791 Roof Jack 24 5 1/4 - - - - - - All Models5