Dacor MH3618 Installation Instructions - Page 38

Planning the Installation Duct Work Equivalent Lengths Piece EQUIVALENT LENGTHS Subtract Piece Subtract • Keep turns as far away from the hood exhaust as possible, and as much space between bends as possible. • For best performance, use round duct instead of rectangular, especially when elbows are required. 8" 90° elbow 7 feet 10" 90° elbow 5 feet • If multiple elbows are used, try to keep a minimum of 8" 45° elbow 3 feet 10" 45° elbow 2 feet 24" straight duct between them. 3¼" X 10" to round 90° transition Roof cap 25 feet * 3¼" X 10" to 8"/10" round transition Wall cap with damper 4 feet * • Avoid "S" or "back to back" use of adjacent elbows. • In regions where the weather gets extremely cold, use thermal breaks, such as a short section of non-metallic duct, to avoid indoor heat loss. Locate the break as close as possible to the outside pass through point. * The equivalent lengths of roof and wall caps vary with • Do not use flexible metal duct. model and configuration. For equivalent length, contact the manufacturer or a qualified HVAC specialist. • Do not use duct work that is smaller in cross-sectional area than the recommended types above. Duct Work Design Tips • Wherever possible, reduce the number of transitions and turns to as few sharp angles as possible. Two staggered 45° angles are better than one 90°. Preparing for Installation Verify the Package Contents • Temporary mounting brackets, and the screws and anchors to hold them in place Unpack the parts box and verify that all parts have been included according to the parts list on page 5. If any item is missing or damaged, please contact the dealer immedi- during installation are provided with the hood. Two anchors and screws are used per bracket. ately. Do not install a damaged or incomplete appliance. • Determine the number, size and type of Make sure you have everything necessary for proper instal- anchors required to attach the hood permanently to the lation before proceeding. wall and/or the cabinets based on the type of installa- Mounting Location Preparation tion and the weight chart on page 3. • Make sure the mounting surface is properly reinforced to handle the full weight warning of the hood. If mounting • The electrical service to the range hood should be installed only by a licensed electrician. the unit to a drywall or plastered surface, install a reinforced mounting • Observe all governing codes and ordinances during block between the studs site preparation and installation. Contact your local behind all hood mounting building department for further information. locations. You may attach • Failure to properly anchor the hood to the wall may result in personal injury due to the unit falling off the wall. screws directly to the studs and cabinets if they line up with the mounting holes in the back and top • To avoid an electric shock hazard and property dam- of the hood. If mount- age, locate electric wires and water pipes and avoid ing the hood to brick or drilling or cutting in the vicinity. masonry, select anchors • Use the temporary mounting brackets only to hold the hood in place until permanent anchoring is capable of holding the full weight of the hood. installed. 8