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6. Maintenance <br /> The following maintenance items are required for <br /> the proper operation of your water heater. <br /> Topics in this section The appliance must be inspected annually by a <br /> Maintenance licensed professional. Repairs and maintenance <br /> • shall be performed by a licensed professional. The <br /> • Cleaning and Inspecting the Air Filter licensed professional must verify proper operation <br /> (Indoor Units Only) after servicing. <br /> • Flushing the Heat Exchanger <br /> • CLEANING <br /> Draining the Water Heater <br /> It is imperative that control compartments, burners, <br /> condensate collection and disposal system, vent <br /> screens and circulating air passageways of the <br /> 6.1 Maintenance appliance be kept clean. <br /> BURNER <br /> This water heater must be inspected annually by <br /> a licensed professional. Repairs and maintenance Check burner flame for proper color. Once ignited, <br /> shall be performed by a licensed professional. The the flame must cover the surface of the burner. <br /> licensed professional must verify proper operation The flame must burn with a clear, blue, stable <br /> after servicing. flame. If the flame does not have this appearance, <br /> complete the following steps: <br /> AWARNING 1. Turn off and disconnect electrical power.Allow <br /> to cool. <br /> To protect yourself from harm, before performing 2. Remove the front panel by removing four <br /> maintenance: <br /> screws. <br /> • Turn off the electrical power supply by un- 3. Use a vacuum to remove dust from the main <br /> plugging the power cord or by turning off burner and fan blades. Do not use a wet cloth <br /> the electricity at the circuit breaker. (The or spray cleaners on the burner. Do not use <br /> temperature controller does not control the volatile substances such as benzene and <br /> electrical power.) thinners; they may ignite or fade the paint. <br /> • Turn off the gas at the manual gas control 4. Use soft dry cloth to wipe cabinet. <br /> valve, usually located immediately below <br /> the water heater. CONDENSATE COLLECTION AND <br /> • Turn off the incoming water supply. This DISPOSAL SYSTEM <br /> can be done at the isolation valve immedi- Periodic inspection and cleaning of the <br /> ately below the water heater or by turning condensate collection and disposal system. <br /> off the water supply to the building. <br /> Ensure condensate is flowing and the end of the <br /> drain is open to the atmosphere. <br /> A WARNING VENT SYSTEM <br /> Keep the appliance area clear and free from Periodic cleaning and inspection of the vent <br /> combustible materials, gasoline, and other system including screens in the vent termination. <br /> flammable vapors and liquids. The vent system should be inspected for <br /> blockages including snow or other debris or <br /> damage. If the vent is blocked and cannot be <br /> easily cleared, contact a trained and qualified <br /> professional. <br /> Rinnai Tankless Water Heater Installation and Operation Manual 80 <br />