GE Monogram ZV1050 Installation Instructions Manual

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Contents

5Advanced PlanningDUCT FITTINGS TotalEquivalent Quantity EquivalentDuct Piece Dimensions Length* Used LengthRound, 1 ft.straight (per footlength)1 ft.3-1/4" x 12" (per footstraight length)90° elbow 15 ft.45° elbow 9 ft.3-1/4" x 12"90° elbow 15 ft.3-1/4" x 12"45° elbow 9 ft.3-1/4" x 12"90° flat elbow 20 ft.8" round to3-1/4" x 24" transition 1 ft.3-1/4" x 12"to 8" round transition 5 ft.8" roundto 3-1/4" x 12"transition 90° elbow 5 ft.3-1/4" x 12" to 8"round transition 90° elbow 15 ft.Roundwall capwith damper 30 ft.3-1/4" x 12" wall capwith damper 30 ft.Roundroof cap 26 ft.Roundroof vent 24 ft.Use this chart to compute maximumpermissable lengths for duct runs tooutdoors.Note: Do not exceed maximum permissable equivalentlengths!Maximum duct length:100 foot for range hoods.Flexible ducting:If flexible metal ducting is used, allthe equivalent feet values in the tableshould be doubled. The flexible metalduct should be straight and smoothand extended as much as possible.Do NOT use flexible plastic ducting.Total Duct RunNote: Any home ventilation system, such as aventilation hood, may interrupt the proper flow ofcombustion air and exhaust required by fireplaces,gas furnaces, gas water heaters and other naturallyvented systems. To minimize the chance of interruptionof such naturally vented systems, follow the heatingequipment manufacturer’s guidelines and safetystandards such as those published by NFPA and ASHRAE.* Actual length of straight duct plus duct fittingequivalent. Equivalent length of duct pieces are basedon actual tests conducted by GE Evaluation Engineer-ing and reflect requirements for good ventingperformance with any ventilation hood.This Hood MustUse 8" Round DuctIt Can Transition to3-1/4" x 12" Duct