Navien NHB H Series, Инструкция по установке и эксплуатации

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108 Operating the Boiler
Rotate the Command dial ( ) to switch between
the list of errors. Press the Command dial ( ) to
select an error to view detailed information.
Press the Back button ( ) to return to the previous
screen or menu.
Note
●
The front panel displays flashes in
red and the error icon is displayed
(flashing) when a level 1 error is
detected. You can press the command
dial to enter error display mode. Boiler
operation is maintained during a level
1 error.
●
A level 1 error is automatically cleared
when the problem is resolved.
●
You can press the Power button ( )
to clear a level1 error. Then the error
is cleared if the problem has been
resolved.
11.11 Viewing Other System
Information
To view the miscellaneous system information, press
the Menu button ( ), and then select “5. EMS
Data”.
Rotate the Command dial ( ) to switch between
the information items. Press the Command dial ( )
to select an item and view the information.
Item Description
6. DHW control
method
Select a DHW control
type.
1. Supply water
2. Sys Supply water
●
Default: Supply water
* DHW Priority Time refers to the time duration that the
boiler will give priority to DHW over space heating.
** This function will provide protection from growth
of legionella bacteria in the DHW tank only. It will
not protect water supply piping.
A mixing valve must be installed on the DHW
supply line when this mode is enabled as water
temperatures will exceed 140°F (60°C).
CAUTION
When “5. Anti Legionella Function” is set to
“Enable” and even if the DHW tank is set to less
than 140°F (60°C), hot water 140°F (60°C) or
higher may be discharged approximately once
a week.
11.10 Viewing Error History
To view the error history, press the Menu button
( ), and then select “4. Error History”.
A list of 10 recent errors are displayed on the screen,
with the most recent error displayed at the top of
the list.