4Installation PlanningInstallation RequirementsWARNINGTo reduce the risk of fire, plan the installation so thatall minimum required clearances are met or exceeded.Dimensions provided are minimum clearances, unlessotherwise noted.An Integrated Ventilation System (IVS) installed in•a custom hood canopy constructed of combustiblematerials must be installed with the combustiblematerial structure a minimum of 36” (914mm) abovethe appliance cooking surface.An IVS installed in a custom hood canopy that is•constructed of non-combustible materials must beinstalled with the non-combustible material structure aminimum of 30” (762mm) above the appliance cookingsurface.An IVS installed in a custom hood canopy that is•constructed with a Dacor IHL series stainless steelhood liner must be installed with the non-combustiblematerial structure a minimum of 30” (762mm) abovethe appliance cooking surface.The IVS must be mounted so that it can be removed if•service is required. Make sure that the material aroundthe edge of the cutout, behind the IVS mounting holes,is strong enough to hold the weight of the unit.Electrical RequirementsWARNINGTo reduce the risk of fire and electric shock, the electricservice to the IVS must be installed only by a licensedelectrician.CAUTIONTo reduce the risk of fire and electric shock, install thisrange hood only with an in-line or remote blower ratedmaximum 7 Amps. (IVS1 and IVS2) or maximum 8 Amps.(IVSR1 and IVSR2).It is the owner’s responsibility to ensure that the electricalconnection of this appliance is performed by a qualifiedelectrician. The electrical installation, including minimumsupply wire size and grounding, must be in accordance withthe National Electric code ANSI/NFPA* (or latest revision)and local codes and ordinances.*A copy of this standard may be obtained from:National Fire Protection Association1 Batterymarch ParkQuincy, Massachusetts 02269-9101The ground wire on this appliance must be connected•to a grounded, metallic, permanent wiring system orgrounding conductor installed by a licensed electrician.Do not ground the appliance or appliance wiring to a•gas pipeline or to the neutral (white) power supply wire.Do not install a fuse in the neutral or ground circuit.•Connect the IVS directly to an electrical junction box.•The IVS needs to be hard wired, according to local•code, directly to a dedicated three wire grounded,single phase circuit rated at 120 Vac 60 Hz, 15 Amps.Planning the Duct WorkWARNINGTo reduce the risk of fire and to properly exhaust•air, be sure to duct air outside the house or building.Do not vent exhaust air into spaces within walls orceilings or into attics, crawl spaces or garages.To prevent combustion by-products, smoke or odors•from entering the home and to improve efficiency,tape all duct joints securely.Use only duct work deemed acceptable by state,•municipal and local codes.Range hoods may interrupt the proper flow of•smoke and combustion gases from furnaces, gaswater heaters and fireplaces. To avoid drawinglethal gases into the home, follow the manufacturesrecommendation for these devices and consultNFPA and ASHRAE recommendations.When installing models IVS1 and IVS2, DO NOT•install an additional, external blower to increasethe length of the duct run. Even small differencesbetween blower air flow rates can greatly reduce theair draw by the hood.When installing models IVSR1 and IVSR2, DO•NOT install more than one external blower toincrease the length of the duct run. Even smalldifferences between blower air flow rates can greatlyreduce the air draw by the hood. Install only thein-line or remote blower models specified in theseinstructions.Duct System Design RequirementsAll duct work materials (including screws and duct tape)•must be purchased separately by the customer.Ducts must be of adequate size and duct runs should•be as short and straight as possible. Where turns arenecessary, keep the turning radius as large and smoothas possible.