Navien NPE-180A2 Installation Manual page 93

No Recirculation
Disable recirculation.
External Recirculation
When using the External Recirculation feature, you
can choose commands in the menu to preheat
according to the set DHW temperature.
Item Description
Set to repeat DHW
1. Always On
Recirculation.
Set to detect DHW use for a
2. Intelligent* week and repeat the detected
cycle.
The user can choose
commands for DHW
Recirculation on a weekly
basis.
1. 1 Day: schedule a command
3. Weekly* for the week.
2. 3 Day: schedule commands
for Weekdays, Saturdays, and
Sundays.
3. 7 Day: schedule commands
for each day of the week.
Set to use the included
HotButton controller. Refer
4. HotButton
"3.4.4 Navien HotButton Kit" on
page 31.
* To choose this option, you must set up the Time settings
in the Configuration menu.
S2-type models are automatically set
Note
●
to use an external pump.
A2-type models must be set to
●
use an external pump. When using
an external pump, follow the
instructions in "3.4.3 External Pump
Wire Connection" on page 30
first and select YES on the screen
asking whether the external pump is
connected to the PCB.
Internal Recirculation
When using the Internal Recirculation feature, you
can choose commands in the menu to preheat
according to the set DHW temperature.
Item Description
Set to repeat DHW
1. Always On
Recirculation.
Set to detect DHW use for a
2. Intelligent* week and repeat the detected
cycle.
The user can choose
commands for DHW
Recirculation on a weekly
basis.
1. 1 Day: schedule a command
3. Weekly* for the week.
2. 3 Day: schedule commands
for Weekdays, Saturdays, and
Sundays.
3. 7 Day: schedule commands
for each day of the week.
* To choose this option, you must set up the Time settings
in the Configuration menu.
Internal Recirculation is available only
Note
on A2-type models.
Operating the Water Heater 93