Navien NR-35D User Manual page 17

4. Press OK button to confirm.
OFF will change to ON if you press OK button and
' ■ ' sign will appear on the Timer bar on the bottom.
Turn the dial to set the next time you wish to heat
then press OK button to confirm.
Blocked time filled with ' ■ ' sign is the operating time.
Repeat this process until your desired heating times
are selected and blocked.
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