12 49-80839-1INSTALLATION PREPARATION Installation PreparationPOWER SUPPLYIMPORTANT – (Please read carefully)WARNINGFOR PERSONAL SAFETY, THIS APPLIANCEMUST BE PROPERLY GROUNDED.Remove house fuse or open circuit breaker beforebeginning installation.Do not use an extension cord or adapter plug withthis appliance. Follow National Electrical Codes orprevailing local codes and ordinances.Electrical supplyThese vent hoods must be supplied with 120V,60Hz, and connected to an individual, properlygrounded branch circuit, and protected by a 15 or20 amp circuit breaker or time delay fuse.• Wiring must be 2 wire with ground.• If the electrical supply does not meet the aboverequirements, call a licensed electrician beforeproceeding.• Route house wiring as close to the installationlocation as possible in the ceiling or wall.• Connect the wiring to the house wiring inaccordance with local codes.Grounding instructionsThe grounding conductor must be connected toa ground metal, permanent wiring system, or anequipment-grounding terminal or lead on the hood.WARNING The improper connection of theequipment-grounding conductor can result in a riskof electric shock. Check with a qualified electricianor service representative if you are in doubt whetherthe appliance is properly grounded.WARNING The improper connection ofaluminum house wiring to copper leads can resultin an electrical hazard or fire. Use only connectorsdesigned for joining copper to aluminum and followthe manufacturer’s recommended procedure closely.ADVANCE PLANNINGVented Install Planning• This hood is designed to be vented vertically usinga 7" round duct or a 3 1»4 " x 10" rectangular duct orhorizontally using a 3 1»4 " x 10" rectangular duct.• Use metal ductwork only.• Determine the exact location of the vent hood.• Plan the route for venting exhaust to the outdoors.To maximize the ventilation performance of thevent system:1. Minimize the duct run length and number oftransitions and elbows.2. Maintain a constant duct size.3. Seal all joints with duct tape to prevent any leaks.4. Do not use any type of flexible ducting.• Install a wall cap or roof cap at the exterioropening. Purchase the wall or roof cap and anytransition and length of duct needed in advance.• When applicable, install any makeup (replacement)air system in accordance with local buildingcode requirements. Visit GEAppliances.com foravailable makeup air solutions.Recirculation Install PlanningThis hood may be installed in recirculation modeand is shipped in this configuration. The charcoalfilter is necessary for recirculation installation.Power Supply PlanningThe location of the power supply connection iscalled out in the Prepare for Electrical – RemoveWiring Cover section.