Whirlpool WMH53520CS Dimension Guide - Page 2
Recommended Standard Fittings - installation
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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. For best performance, use no more than three 90° elbows. To calculate the length of the system you need, add the equivalent length for each vent piece used in the system. See the following examples: Recommended Standard Fittings A B C Rectangular to Round Transition for Roof Venting 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 D E F G A. Rectangular to round transition piece: 3 " x 10" to 6" = 5 ft (8.3 x 25.4 cm to 15.2 cm = 1.5 m) B. Roof cap: 3 " x 10" = 24 ft (8.3 x 25.4 cm = 7.3 m) C. 90° elbow: 3 " 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: 3 " 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: 3 " x 10" = 10 ft (8.3 x 25.4 cm = 3 m) 6" (15.2 cm) vent system = 73 ft (22.2 m) total A B 6 ft (1.8 m) B C 3" (7.6 cm) D A. Roof cap B. 6" (15.2 cm) m C. Elbow (for wa E D. Wall cap F E. 3 " x 10" to rectangular to F. Vent extensio A. Roof cap B. 6" (15.2 cm) min. diameter round vent C. Elbow (for wall venting only) D. Wall cap E. 3 " 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 2 ft (0.6 m) C 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) D 3 " 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 3 " 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) 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 policy includes a continuous commitment to improve Dimensions are for planning purposes only. For complete details, see Installation our products, we reserve the right to change materials and specifications without notice. Instructions packed with product. Specifications subject to change without notice. Page 2 of 2 Ref. W10652353A 1/16/14