Direct Vent Tankless Water Heater - Alpine Home Air Products

Operating InstructionsThe MC-91 temperature controller is supplied with the R75LS, R94LS, and R98LS models. Additional functionsare available through the use of optional controllers.There are several models of temperature controllers that can be purchased separately. Their description,operation, and installation is provided in this manual in case additional temperature controllers are purchased andinstalled.Features Available on Temperature ControllersFeaturesMC-91MCC-91MC-100BC-100MC-502DescriptionCallSends a short series of beeps to all controllers in the system. It isnot an intercom.Clock12 hour AM/PM clock. (The MC-100 must be installed for clockto work on the BC-100.)Error CodesWhen a fault is detected an error code flashes at the temperaturedisplay on models MC-91, MCC-91, and MC-502; and flashes atthe clock display on models MC-100 and BC-100.FunctionUsed on this model to set the clock or sound volume.In Use IndicatorIndicates that hot water is being supplied (i.e. a hot water tap isopen).ON/OFF ButtonUsed to turn the water heater ON or OFF.Power SaveAllows the temperature controller to be in an energy savingmode.Priority Button /IndicatorIndicates that this controller is setting the temperature . Prioritycan be switched to another controller by pressing its PriorityButton when no hot water is running.Sound VolumeUsed to adjust the voice prompt volume.Temperature DisplayShows the temperature setting.ThermostatIncreases or decreases the temperature setting.Water Smart / Bath FillButton / IndicatorUsed to select the Water Smart / Bath Fill Function to fill a bathwith a predetermined volume of water.Water VolumeUsed to select the water volume for the Water Smart / Bath FillFunction.VB Series Indoor LS Manual 5