Navien NaviCirc Installation And Operation Manual page 55

Item
2. DHW
Recirculation
When only one NCB-H boiler is connected:
Set the Recirculation type and Schedule settings.
Recirculation type
●
- No Recirculation
- Combi Pre-Heat
- External
External recirculation cannot be used
Note
for cascade systems.
Recirculation type settings (Combi Pre-heat/
External)
Set to Combi Pre-heat (Default: Always On)
●
- Always On
- Intelligent
- Weekly
Intelligent mode cannot be used for
Note
cascade systems.
Set to External (Default: Always On)
●
- Always On
- Intelligent
- Weekly
- Aquastat
- Manual
Description
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