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Item
Turn on or turn off the
boiler pump in DHW
18. Boiler pump
mode.
Oper(DHW)
●
●
Turn on or turn off the
system pump in DHW
19. Sys pump
mode.
Oper(DHW)
●
●
Turn on or turn off Zone 2
pump in DHW mode.
20. Zone2 pump
Oper(DHW)
●
●
Turn on or turn off the
DHW pump in DHW
mode when both the
21. DHW pump
space heating and DHW
Oper(DHW pri)
demands are present.
●
●
Set the space heating
pump over-run time.
22. Boiler Pump
Delay**
●
●
When the DHW
temperature sensor is
used:
23. DHW Demand
On Diff
●
●
When the DHW
temperature sensor is
used:
24. DHW Demand
Off Diff
●
●
Set the heat exchanger's
protection level.
●
●
25. HEX Protection
Level
Description
Setting range: On/Off
Default: Off
Setting range: On/Off
Default: Off
Setting range: On/Off
Default: Off
Setting range: On/Off
Default: On
Setting range: 3 – 40 min
Default: 40 min
Setting range: 0–10°C
(0–18°F)
Default: 3°C (5°F)
Setting range: 0–5°C
(0–9°F)
Default: 0°C (0°F)
Setting range: 0–5 Level
Default: 4 Level
The HEX
Note
Protection Level
Settings only
applies to the
NHB-H boilers.
Item
Set the time for service
notification.
●
26. Service Notif
Time
●
●
Set the service
notification according to
the operating times.
●
27. Service Notif Cycl
●
●
View the service contact
28. Service contact #
information.
Initialize all parameter
settings (panel and main
29. Factory Reset
controller) to factory
default.
Change the parameter
setting password.
Rotate the Command dial
30. P/W Change
(
and places, and press the
Command dial (
save the new password.
If you enter an incorrect password 10
Note
●
times or make no inputs 5 minutes,
the boiler will return to Normal mode.
To return to the previous mode, press
●
the Reset button.
The Factory default password is "1234".
●
If you make no inputs for 10 seconds
●
in the Parameter Edit mode, the
current parameter value will be saved
automatically.
Press and hold the Back button (
●
in Parameter Edit mode for 5 seconds
to reset individual parameters to their
default values.
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
Description
Setting range: 30 –
3650 days (10 years)
It can be set in 10 day
increments.
Default: 1820 days (5
years)
Setting range: 300 –
36500 cycles
It can be set in 100
cycle increments.
Default: 18200 cycles
) to change numbers
) to
)
Operating the Boiler
113
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