Navien NHB Series Installation & Operation Manual page 102

Item
10. Burning
Acceleration Time
11. Anti Fast Cycling
Time*
12. DHW Min Limit
13. DHW Max Limit
14. Freeze Protection
15. Low System
Pressure
16. High System
Pressure
17. Boiler pump
operation(DHW)
18. DHW Pump
Operation
102 Operating the Boiler
Description
Set the time to reach the maximum
space heating capacity after initial
operation.
Setting range: 0 – 20 min
Default: 3 min
Set the anti-fast cycling time.
Setting range: 0 – 20 min
Default: 3 min
Set the DHW supply minimum
temperature.
Setting range: DHW minimum
capacity (%) – [DHW MAX capacity
limit - 20] %
Default: Boiler's minimum heat
capacity
Set the DHW supply maximum
temperature.
Setting range: [DHW Min capacity
limit + 20] % – 100%
Default: 100%
Set the pump freeze protection
temperature.
Setting range: 43°F (6°C) – 50°F (10°C)
Default: 50°F (10°C)
The system freeze protection
Note
temperature is set based on
the pump freeze protection
temperature.
Set the low water system pressure.
Setting range: 4 – 17 psi
Default: 6 psi
Set the low water system pressure.
Setting range: 40 – 141 psi
Default: 70 psi
Turn on or turn off the boiler pump in
DHW mode.
Setting range: ON/OFF
Default: OFF
Turn on or turn off the DHW pump
when space heating and DHW modes
are required at the same time while
using space heating mode.
Default: ON
Item
Set the SH pump over-run time.
19. Boiler Pump Delay
Setting range: ON/OFF
Default: OFF
Set the DHW On temperature when
using the DHW temperature sensor.
20. DHW Demand On
Differential
Setting range: 0°F (0°C) – 18°F (10°C)
Default: 5°F (3°C)
Set the DHW Off temperature when
using the DHW temperature sensor.
21. DHW Demand Off
Differential
Setting range: 0°F (0°C) – 9°F (5°C)
Default: 0°F (0°C)
Setting range: 30 –
3650 days (10 years)
22. Service
Notification Time It can be set in 10 day increments.
Default: 1820 days (5 years)
Set the service notification according to
the operating times.
23. Service
Setting range: 300 – 36500 cycles
Notification Cycle
It can be set in 100 cycle increments.
Default: 18200 cycles
24. Service Contact
View the service contact information.
Phone Number
Initialize all parameter settings (panel
25. Factory Reset
and main controller) to factory default.
Change the parameter setting
26. P/W Change
password.
If you enter an incorrect password 10 times or do not
Note
press any buttons for 5 minutes, the boiler will return
to Normal mode.
The Factory default password is "1234".
When you reset one of the following parameters, the
corresponding parameter will be reset automatically:
- Supply Min or Max capacity limit
- Return Min or Max capacity limit
- Lowest Outdoor Temperature or Highest Outdoor
Temperature
* The anti-fast cycling time is the duration that the boiler stops its space
heating operation when the space heating supply or return temperatures
reach the set values for boiler operation stop temperatures. The boiler
will not resume space heating until the duration elapses, even when the
space heating supply or return temperatures return to within the set
ranges.
Description