7Important Safety Information ....................................................................... 2Contents ........................................................................................................ 7Overview of Condensing Tankless Gas Water Heater .............................. 8General PartsMain Unit .................................................................................................... 9Remote Controller.................................................................................... 10Initial Operation ............................................................................................ 11How to UseSetting and Using the Water Heater ........................................................ 12Flow Meter Alarm ...................................................................................... 14Muting the Remote Controller ................................................................. 16Adjusting the Maximum Output Temperature ........................................ 17Preventing Damage from Freezing ............................................................. 18Regular Maintenance................................................................................... 22Troubleshooting ........................................................................................... 24Follow-up Service ........................................................................................ 29Specifications ............................................................................................... 31Limited Warranty .......................................................................................... 33Contents