NCC300 Owner's Guide
7
ImportantSafetyInformation....................................................................... 2
Contents......................................................................................................... 7
OverviewofCondensingTanklessGasWaterHeater.............................. 8
RC-9018MOperationOverview.................................................................... 9
General Parts
Main Unit................................................................................................... 11
Remote Controller.................................................................................... 12
SystemCheck............................................................................................... 14
Initial Operation............................................................................................ 16
ForAllSystems
ClockAdjustment...................................................................................... 17
Using the Water Heater............................................................................. 18
Setting Hot Water Temperature................................................................ 19
AutomaticWaterHeater“ON”or“OFF”Operation............................... 20
LockingtheRemoteController................................................................ 22
CustomizableSettings<Miscsettings>.................................................. 23
ForSystem[Rcrc]
EnablingAutomaticRecirculationOperation......................................... 26
ManuallyStartingRecirculationOperation............................................ 27
SettingtheRecirculationSystemOperationTimer............................... 28
SingleWaterHeaterOnly
Flow Meter Alarm...................................................................................... 30
PreventingDamagefromFreezing............................................................. 32
Regular Maintenance................................................................................... 35
Troubleshooting........................................................................................... 38
Follow-upService........................................................................................ 43
Specications............................................................................................... 46
DefaultSettings............................................................................................ 47
Contents