Noritz NRCP1112-DV Owner's Manual

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Noritz NRCP1112-DV Owner's Manual Manual pdf 28 page image

28How to use Control Panel - User modeChapter 3. – Unit Operation8. Setting the ‘Recirculation System’.You can choose from two pre-heating modes:Internal Recirculation Mode or External Recirculation Mode. To select a recirculation mode, you must set from the ‘Installer Mode’on the front control panel.(Refer to the page 30 )When you use a recirculation mode, there will be some minor efficiency loss, as a result of the water heater maintaining a steadytemperature within the recirculation loop.With the recirculation operation, hot water will be automatically circulated in the hot water pipes. Even with this function activated,it may take several minutes for hot water to be completely circulated through the plumbing system. Set the timer to activate therecirculation system prior to the first use of hot water to ensure hot water is remove the word instantly.Recirculation timer setting can be changed to meet customer's desired schedule.Auto (self learning mode) function can be selected by customer's need.Pressure Relief ValveAir & GasMixingPrimary heatexchangerSecondary heatexchangerBurnerRecirculation LineExpansion Tank (Installaccording to local code)RecirculationPumpCondensate HoseGasHot Water OutletCold Water InletThis mode is available without arecirculation pipe installed. Thewater heater is preheated andprotected from freezing1. Internal Recirculation modeMode Description ReturnLineInst. Mode Setting HotWaterSpeedEnergyDefault(RecirculationTime)RecirculationSettingRecirculationModeStandard (Default) Same as otherTankless water heater N/A OFF N/A Good Best -Internal Recirculation- page 28Similar to tank water heaterwithout recirculation system N/A ON Internal Better Better 5:00 ~ 8:00 AM5:00 ~ 11:00 PMExternal Recirculation- page 27 Quicker hot water Required ON External Best Good