Navien NCB-700-2S+/42K Service Manual page 35

DHW Preheat
Item
1. ECO (Preheat OFF)
2. ECO (Intelligent)
3. ECO (Schedule)
4. Always Preheat
If you select DHW Schedule, you can select the certain day to
schedule the central heating modes.
Item
1. 7 Day
2. 5 + 2 Day
3. 5 + 1 + 1 Day
4. OFF (Not Used)
Setting the DHW Schedule
When setting up the DHW option, select 'Weekly, ' and select
between 1 Day, 3 Day, and 7 Day to go to the Schedule menu.
Working
Press the Up button (
the scheduled time. You can choose the time in 30 minutes
intervals.
DHW Preheat - None ECO Mode
Item
1. Always ON
34 System Details
Description
Turn off the DHW Preheat.
Set to detect DHW usage for
repeat the detected cycle.
Set the detect DHW usage for
a week.
Always turn on the DHW
Preheat.
Description
Schedule a command for each
day of the week.
Schedule a command for
weekday and weekend.
Schedule a command for
weekdays, Saturdays, and
Sundays.
Disable the schedule function.
Not working
) or the Down button ( ) to choose
Description
Always DHW Preheat
4.4.7.4 Setting the Schedule Programming
To set the boiler's schedule programming operation, press the
Menu button ( ), and then select "4. Schedule Programming".
Press the Up button ( ) or the Down button (
between the list items or to increase/decrease setting values.
Press the OK button ( ) to select an item or to confirm after
making changes.
Press the Back button ( ) to return to the previous screen or
menu.
Item
1. CH Schedule
2. DHW Schedule
) to switch
Description
Check the CH schedule.
Check the DHW schedule.