Riello ALUDOMUS SOLAR KV/200 20 ISC SOLAR User Manual page 8

ENd USER
Notes on functioning
The control panel on the ALUDOMUS SOLAR boiler also
controls the following functions.:
The DHW priority function
This ensures that the boiler can still serve the central
heating circuit even when domestic hot water is drawn
off .
The frost protection function
The boiler frost protection function stops water freezing
inside the boiler. If boiler temperature falls below 5°C,
the burner ignites and runs at full power until tempe-
rature reaches 10°C.
The CH frost protection
The CH frost protection function is only active if an
outdoor temperature sensor is connected. If outside
temperature drops below -5°C the pumps are switched
on. If outside temperature is between -4° and 1.5°C, the
PROGRAMMING LEVELS:
There are three programming levels:
− End user
− Installer
− Manufacturer.
You must follow a precise set of instructions to access
any of these levels. The relevant instructions, complete
with a list of the keys to press, are provided in the tables
below .
End user level
This level provides the parameters needed by the end
user. For example, it contains parameters for settings CH
and DHW functioning times and Summer/Winter mode
switching temperature. See the "Complete list of para-
meters" section for further details.
Note 1: If no key is pressed for about 8 minutes, the
display automatically returns to the main screen. Any
changes will not be saved.
Note 2: Any changes are saved if you switch to another
programming level.
(*) The DHW key above the display.
pumps are switched on for 10 minutes at intervals of 6
hours. If outside temperature is above 1.5°C the pumps
are switched off.
Overtemperature dispersal function
If the temperature threshold thermostat trips (86°C) the
boiler shuts down and accumulated heat is dispersed
by switching on the central heating pump. If boiler tem-
perature rises to 89°C, the fan is switched on too.
Boiler switching differential
This establishes a minimum off time for the burner, to
stop it igniting and shutting down repeatedly. The boiler
will only start up again if the difference between the
setpoint and the actual boiler temperature exceeds a
predetermined value.
Key
Press one of these keys to access the
D U
END USER programming level
Press one of these keys until you reach
D U
the parameter you require. The exam-
ple here shows the parameter Pxx
Press these keys to change the current
value. To memorise the new setting,
+ -
you need to move on to another
parameter
(*) Press one of these keys to exit the
end user programming level without
M V
saving any changes. Any new settings
are not stored in memory
Press this key to exit the end user
I
programming level and save any
changes
8
Explanation