Navien NCB-700-2S+/42K Service Manual page 34

The graph shows how the set temperature is determined.
K-factor values can be set using the front panel.
Outdoor Temperature Compensation
4 3.5 3
90
80
70
60
50 50
40
30
20
20 15 10
5
Outdoor Temperature (ºC)
If there is an input from the outdoor temperature sensor, OTC
(Outdoor Temperature Compensation) control will be enabled
automatically. Also, if there is no input from the outdoor
temperature sensor, OTC control will be disabled automatically.
Setting the CH Schedule
When setting up the CH option, select 'Weekly, ' and select
between 1 Day, 3 Day, and 7 Day to go to the Schedule menu.
Working
Press the Up button ( ) or the Down button (
the scheduled time. You can choose the time in 30 minutes
intervals.
2.5 2
-10 -15 -20 -25
0 -5
Not working
) to choose
4.4.7.3 Setting the DHW Operation
To set the boiler's DHW operation, press the Menu button (
and then select "3. DHW Operation".
1.5
1.2
1
0.6
0.2
Press the Up button (
between the list items or to increase/decrease setting values.
Press the OK button (
making changes.
Press the Back button (
menu.
Item
1. DHW Set Temp
2. DHW Preheat
) or the Down button ( ) to switch
) to select an item or to confirm after
) to return to the previous screen or
Description
Set the DHW temperature.
Setting range: 30 – 65°C
●
Default: 50°C
●
Activate the DHW preheat
function.
If the DHW preheat
Note
function is activated
by room controller,
"Unable to Set" will
be displayed.
System Details
),
33