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¦ Do not install two elbows together. ¦ Use duct tape to seal all joints in the vent system. ¦ Use caulking to seal exterior wall or roof opening around the cap. Cold weather installations An additional backdraft damper should be installed to minimize backward cold air flow and a nonmetallic thermal break to minimize conduction of outside temperatures as part of the vent system. The damper should be on the cold air side of the thermal break. The break should be as close as possible to where the vent system enters the heated portion of the house. Make-up air Local building codes may require the use of make-up air systems when using ventilation systems greater than specified CFM of air movement. The specified CFM varies from locale to locale. Consult your HVAC professional for specific requirements in your area. Venting Methods This hood is factory set for venting through the roof or wall. A 6" (15.2 cm) round vent system is needed for installation (not included). The hood exhaust opening is 6" (15.2 cm) round. NOTE: Flexible vent is not recommended. Flexible vent creates back pressure and air turbulence that greatly reduces performance. Vent system can terminate either through the roof or wall. To vent through a wall, a 90° elbow is needed. A 6" (15.2 cm) round vent system length should not exceed 35 feet (10.7 m). For recirculating installations see “Recirculating Installations” in “Install Chimney Covers” section. Roof venting roof cap 6" (15.2 cm) round vent 6" (15.2 cm) round vent wall cap Wall venting Calculating Vent System Length Electrical Requirements To calculate the length of the system you need, add the equivalent feet (meters) for each vent piece used in the system. Maximum equivalent vent length is 35 feet (10.7 meters). WARNINGElectrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. Vent piece 6" (15.2 cm) round 45° elbow 2.5 feet (0.8 m) 90° elbow 5.0 feet (1.5 m) wall cap 90° elbow 6 ft. (1.8 m) Example vent system 2 ft. 5 ft. (1.5 m) (0.6 m) 1 — 90° elbow = 8 ft. (2.4 m) straight = 1 — wall cap = system length = 8 ft. (2.4 m) 0 ft. (0 m) 13 ft. (3.9 m) NOTE: Flexible vent is not recommended. Flexible vent creates back pressure and air turbulence that gently reduce performance. IMPORTANT: The hood must be electrically grounded in accordance with local codes and ordinances, or in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70, latest edition, or Canadian Electrical Code, CSA C22.1. If codes permit and a separate ground wire is used, it is recommended that a qualified electrical installer determine that the ground path is adequate. A copy of the above code standards can be obtained from: National Fire Protection Association One Batterymarch Park, Quincy, MA 02269 CSA International 8501 East Pleasant Valley Road Cleveland, Ohio 44131-5575 ¦ A 120-volt, 60-Hz, AC-only, 15-amp, fused electrical circuit is required. A time-delay fuse or circuit breaker is also recommended. It is recommended that a separate circuit serving only this hood be provided. ¦ Do not ground to a gas pipe. ¦ Check with a qualified electrician if you are not sure range hood is properly grounded. ¦ Do not have a fuse in the neutral or ground circuit. ¦ The range hood must be connected with copper wire only. ¦ The range hood should be connected directly to the fused disconnect (or circuit breaker) box through flexible armored or nonmetallic sheathed copper cable. ¦ A UL- or CSA-listed strain relief must be provided at each end of the power supply cable. Wire sizes (copper wire only) and connections must conform with the rating of the appliance as specified on the model/serial rating plate. ¦ Wire sizes must conform to the requirements of the National Electrical Code, ANSI/NFPA 70, latest edition, or CSA Standards C22.1-94, Canadian Electrical Code, Part 1 and C22.2 No. 0-M91, latest edition, and all local codes and ordinances. INSTALLATION INSTRUCTIONS 7. Tape the template (supplied in the chimney support carton) to Install Chimney Support the ceiling and mark the mounting holes, electrical hole and Because of the size and weight of this island hood, the chimney support must be securely attached to the ceiling. ¦ For plaster or drywall ceilings, the chimney support must be attached to joists. If this is not possible, you must build a support structure behind the plaster or drywall. ¦ Do not cut a joist or stud unless absolutely necessary. If a joist or stud must be cut, then a supporting frame must be constructed. ¦ Before making cutouts, make sure there is proper clearance within the ceiling or wall for exhaust vent. WARNINGExcessive Weight Hazard Use two or more people to move and install range hood. Failure to do so can result in back or other injury. 1. Select a flat surface for assembling the hood. Cover that surface with a protective covering such as a blanket or cardboard during assembl...