Navien NCB300-28K Installation & Operation Manual page 56

Item
7. Boiler Pump Delay
8. CH Min Limit
9. CH Max Limit
10. DHW Min Limit
11. DHW Max Limit
12. DHW Wait Time
13. CH Min Burning Time
14. Burning Acceleration
Time
15. OTC ON/OFF
16. K-Factor*
17. WWSD Temp
Description
Set the boiler pump off delay
time.
Setting range: 30 – 40 min
●
Default: 40 min
●
Set the central heating
minimum heat capacity limit.
Setting range: Central heating
●
minimum capacity (%) –
[central heating minimum
capacity limit-20] %
Default: Boiler's minimum
●
heat capacity
Set the central heating
maximum heat capacity limit.
Setting range: (Central
●
heating minimum capacity
limit + 20) % – 100%
Default: 100%
●
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 minimum
●
capacity limit +20] % – 100%
Default: 100%
●
Set the DHW wait time.
Setting range: 0 – 20 min
●
Default: 5 min
●
Set the low-load combustion
time at initial operation.
Setting range: 0 – 20 min
●
Default: 1 min
●
Set the time to reach the
maximum central heating
capacity after initial operation.
Setting range: 0 – 20 min
●
Default: 3 min
●
Enable or disable the outdoor
temperature compensation
control option.
K-Factor for the central heating
Set the Warm Weather
Shutdown temperature.
Setting range: 10°C – 40°C
●
Default: OFF
●
Item
18. WWSD On Diff
19. CH Heat Demand
20. Supply Boost Time
21. Flow Detection Delay
Time
22. Gas Use Compensation
setting
23. Parameter All Clear
24. P/W Change
* When the boiler is connected to an outdoor temperature sensor
(optional), functioning may be activated according to outdoor
temperature conditions and K-factor values using the parameters.
10.7.2 Diagnosing the Boiler System
To Set the boiler's operation parameters, press the ECO button
( ) and Menu button (
then select "2. TST"
5sec
Press the Plus button ( ) or the Minus button (
between the test procedures. Press the ECO button (
a test procedure.
During the test mode, the boiler stops combustion.
Note
Description
Set the differential temperature
to deactivate the Warm
Weather Shutdown.
Setting range: 1°C – 20°C
●
Default: 3°C
●
Set the CH heat demand
control type.
1. Navien thermostat
2. panel
3. Opentherm
4. CH Thermostat
5. Switched Live
Set the time that the
burner(CH) boost supply set
temperature.
Set the time that delays flow
detection sequence.
Adjust the gas usage estimates
to improve accuracy.
All parameter setting to factory
default.
Change the parameter setting
password.
Press the Plus button
( ) or the Minus button (
to change numbers and places,
and press the ECO button (
to save the new password.
) simultaneously 5 seconds, and
) to switch
) to run
Operating the Boiler
)
)
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