Navien NCB500-1.5S/37K, Руководство по установке и эксплуатации, Страница: 48 / 72

Operating the Boiler 47
Press the Back button ( ) to return to the previous screen or
menu.
Item Description
1. Supply MIN Set-point
Set the central heating supply
minimum temperature.
●
Setting range: 25°C – [MAX
Set- point – 20°C]
●
Default: 40°C
2. Supply MAX Set-point
Set the central heating supply
maximum temperature.
●
Setting range: [MIN Set-point
+ 20°C] – 90°C
●
Default: 90°C
3. Return MIN Set-point
Set the central heating supply
minimum temperature.
●
Setting range: [MAX Set-
point - 10°C]
●
Default: 30°C
4. Return MAX Set-point
Set the central heating supply
maximum temperature.
●
Setting range: [MIN Set-point
+ 10°C] – 70°C
●
Default: 65°C
5. CH Burning Off Diff
Set the temperature range to
turn off central heating.
●
Setting range: 0°C – 30°C
●
Default: 2°C
6. CH Burning On Diff
Set the temperature range to
turn on central heating.
●
Setting range: 1°C – 30°C
●
Default: 3°C
7. Anti Fast Cycling Time*
Set the anti-fast cycling time.
●
Setting range: 0 – 20 min
●
Default: 3 min
8. Freeze protection
Set the pump freeze protection
temperature.
●
Setting range: 6°C – 10°C
●
Default: 10°C
Note
The system
freeze protection
temperature is set
based on the pump
freeze protection
temperature.
9. Boiler Pump Delay
Set the boiler pump off delay
time.
●
Setting range: 30 – 40 min
●
Default: 40 min
10.7.3 Setting the Operation Parameters
To set the boiler’s operation parameters, press the Back button
( ) and the Menu button ( ) simultaneously for 3 seconds,
and then select “3. Parameter Settings”.
CAUTION
Parameters must be set by a qualified professional with
an extensive understanding of the boiler system. Setting
parameters improperly may lead to property damage or
injury.
In the password screen, press the Up button ( ) or the Down
button ( ) to change numbers and places, and press the OK
button ( ) to enter the password.
The factory default password is “1234”.
After entering the parameter setting screen, press the Up
button ( ) or the Down button ( ) to switch between the
parameters or to increase/decrease setting values. Press the OK
button ( ) to select a parameter or to confirm after making
changes.