GH10NA USER MANUAL
PAGE
13
Issue I
AUGUST 2017
6.7.2.
Sudden Drop of Outlet Water Temperature
If during automatic operation the boiler outlet water temperature drops by 10°C, and during that
dropping period the temperature does not rise by 4°C, then the CH and HUW pumps are switched off, and the
Controller goes into the burnout detection mode.
The Controller waits for the period of time set in the
F10
setting, during which it checks whether a rise
of 4°C occurs.
If YES, then the burnout detection condition is stopped, and the CH and HUW pumps (if necessary) are started.
If NOT, this means that the furnace is burned out – the Controller enters the
AL13
alarm condition.
STOPPING CH PUMP OPERATION IN BURNOUT DETECTION
IS INDICATED BY BLINKING THE UPPER INDICATOR ON
.
7.
USER SETTINGS
7.1.
Boiler Temperature Setting (U0)
You can change the boiler temperature setting using the following procedure:
7.2.
Fan speed (U1)
This setting determines the fan rotation speed, and thus the amount of air delivered. It allows to adjust
the fan speed according to the type and quality of the fuel used.
This setting can be set within the range of 1
÷
10, where “1” denotes minimum speed, and “10”
maximum speed.
STEP 1
STEP 2
STEP 3
→
or
→
Green LED lights on the
key.
Display shows current
temperature setting.
Set a new desired
temperature within range
permitted by the boiler
manufacturer.
Save the new
temperature setting.
Move to the U1 setting
If during setting the new temperature
none of the following keys
,
,
,
is pressed for 15 s, the new temperature will not be saved
and the Controller will exit the programming mode.
