Maytag MMV4206FZ Dimension Guide - Page 2
Recommended Vent Length, Recommended Standard Fittings, Rectangular to Round Transition, VENTING
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VENTING DESIGN SPECIFICATIONS CONT. Rectangular to Round Transition: NOTE: The minimum 3" (7.6 cm) clearance must exist between the top of the microwave oven and the rectangular to round transition piece so that the damper can open freely and fully. A B C D E 3" (7.6 cm) F A. Roof cap B. 6" (15.2 cm) min. diameter round vent C. Elbow (for wall venting only) D. Wall cap E. 31⁄4" x 10" to 6" (8.3 x 25.4 cm to 15.2 cm) rectangular to round transition piece F. Vent extension piece, at least 3" (7.6 cm) high Recommended Standard Fittings The following length equivalents are for use when figuring vent length. See the examples in "Recommended Vent Length." A B C Recommended Vent Length A 31/4" x 10" (8.3 x 25.4 cm) rectangular or 6" (15.2 cm) round vent should be used. The total length of the vent system including straight vent, elbow(s), transitions and wall or roof caps must not exceed the equivalent of 140 ft (42.7 m) for either type of vent. See "Recommended Standard Fittings" section for equivalent lengths. For best performance, use no more than three 90° elbows. To calculate the length of the system you need, add the equivalent lengths of each vent piece used in the system. See the following examples: 31/4" x 10" (8.3 x 25.4 cm) vent system = 73 ft (22.2 m) total: A B 6 ft (1.8 m) 2 ft (0.6 m) C A. One 31⁄4" x 10" (8.3 x 25.4 cm) 90° elbow = 25 ft (7.6 m) B. 1 wall cap = 40 ft (12.2 m) C. 2 ft (0.6 m) + 6 ft (1.8 m) straight = 8 ft (2.4 m) 6" (15.2 cm) vent system = 73 ft (22.2 m) total: A B 6 ft (1.8 m) 2 ft (0.6 m) D E F G A. Rectangular to round transition piece: 31⁄4" x 10" to 6" = 5 ft (8.3 x 25.4 cm to 15.2 cm = 1.5 m) B. Roof cap: 31⁄4" x 10" = 24 ft (8.3 x 25.4 cm = 7.3 m) C. 90° elbow: 31⁄4" x 10" = 25 ft (8.3 x 25.4 cm = 7.6 m) D. 90° elbow: 6" = 10 ft (15.2 cm = 3 m) E. Wall cap: 31⁄4" x 10" = 40 ft (8.3 x 25.4 cm = 12.2 m) F. 45° elbow: 6" = 5 ft (15.2 cm = 1.5 m) G. 90° flat elbow: 31⁄4" x 10" = 10 ft (8.3 x 25.4 cm = 3 m) C D A. Two 90° elbows = 20 ft (6.1 m) B. 1 wall cap = 40 ft (12.2 m) C. 1 rectangular to round transition piece = 5 ft (1.5 m) D. 2 ft (0.6 m) + 6 ft (1.8 m) straight = 8 ft (2.4 m) If the existing vent is round, a rectangular to round transition piece must be used. In addition, a rectangular 3" (7.6 cm) extension vent between the damper assembly and rectangular to round transition piece must be installed to keep the damper from sticking. Because Whirlpool Corporation includes a continuous commitment to improve our products, we reserve the right to change materials and specifications without notice. Dimensions are for planning purposes only. For complete details, see Installation Instructions packed with product. Specifications subject to change without notice. Page 2 of 2 Ref. W10823835A 09/21/2016