Table Of Contents; Contents - Noritz eco TOUGH NRC661 Owner's Manual

Contents

Important Safety Information ....................................................................... 2
Contents......................................................................................................... 7
Overview of Condensing Tankless Gas Water Heater .............................. 8
Unit Components .......................................................................................... 9
Display Window . ........................................................................................... 10
Initial Operation . ........................................................................................... 11
How to Use (Not using the remote controller)
Using the Water Heater . ............................................................................ 12
How to Use (Using the optional remote controller)
Remote Controller . .................................................................................... 13
Setting and Using the Water Heater ........................................................ 14
Flow Meter Alarm ...................................................................................... 16
Muting the Remote Controller . ................................................................. 18
Adjusting the Maximum Output Temperature ........................................ 18
Preventing Damage from Freezing . ............................................................ 19
Regular Maintenance ................................................................................... 22
Troubleshooting ........................................................................................... 25
Follow-up Service ........................................................................................ 30
Specifications . .............................................................................................. 32