Noritz NR71-SV Installation Manual

Also see for NR50-OD: Instruction manual Instructional manual Service manual Owner's guide Installation manual

Contents

Noritz NR71-SV Installation Manual Manual pdf 21 page image

21Do not connect electrical power to the unit until all electrical wiring has been completed.Consult a qualified electricianfor the electrical work.11. Electrical WiringThis appliance must be electrically grounded in accordance with local codes, or in the absence of local codes,with the National Electrical Code, ANSI/NFPA 70. In Canada, the latest CSA C22.1 Electrical Code.Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improp-er and dangerous operation.Verify proper operation after servicing.Field wiring to be performed at time of appliance installation.• The electrical supply required by the water heater is 120VAC at 60 Hz.The power consumption may be up to 141W.Use an appropriate circuit.• Do not disconnect the power supply when not in use. Whenthe power is off, the freeze prevention in the water heaterwill not activate, resulting in possible freezing damage.• Do not let the power cord contactthe gas piping.Tie the redundant power cord out-side the water heater. Putting theredundant length of cord inside thewater heater may cause electricalinterference and faulty operation.Disconnect PowerElectrical Shock HazardDo not turn power on until electrical wiring is finished. Disconnect power before servicing.Failure to do so may result in death or serious injury from electrical shock.WARNINGElectrostatic discharge can affect electronic components. Take precautions to prevent electrostaticdischarges from personnel or hand tools during the water heater installation and servicing to pro-tect product’s electronic control.CAUTIONGround• To prevent electrical shock, provide a ground with resistance less than 100 . An electrician should do this work.• A grounding screw is provided on the back in the junction box.Do not connect the ground to the city water or gas piping. Do not tie the ground to a telephone line.Breaker Installation• Mount a device which shuts off the electrical path automatically (leakage breaker) when electrical leakage is detected.1. Remove the screw (one) of the junction box and open thecover of the junction box.2. Connect the grounding wire to the ground screw in the cover.3. Crimp the outdoor power cable to the power cable of the unit.Note: When installing the water heater outdoors, either use theincluded power cord with an approved outdoor outlet orhard wire the appliance. (-SV type only.)Junction Box Power CordGround