Temporary Shutdown - Riello START AQUA 24 BI Installer And User Manual

START AQUA 24 BI
HEATING WATER
TEMPERATURE
Summer
By turning the function selector to the Summer symbol
ventional function of only DHW is activated. In the event of a DHW
request, the boiler turns on. The digital display indicates the delivery
temperature.
SUMMER FUNCTION
Heating Temperature Control function (C.T.R.)
When the heating water temperature selector is positioned in the
sector containing the symbols in bold, the C.T.R. self-control function
is activated. According to the temperature set on the room thermostat
and the time taken to reach this value, the boiler automatically varies
the heating water temperature, reducing operating time and enabling
increased comfort and energy savings.
C.T.R. FUNCTION
D - Heating temperature adjustment
To adjust the temperature of the heating water, turn the function se-
lector within the adjustment range (clockwise to increase and anti-
clockwise to decrease).
-
E - DHW temperature adjustment
To adjust the domestic hot water temperature (bathrooms, showers,
kitchens, etc.), turn the dial with the symbol
the value, or anti-clockwise to decrease (min. value 37°C - max.
value 60°C).
The boiler remains on standby until the burner ignites following a
heat request. The boiler operates until the controlled temperatures
are reached or the heat demand is met, after which it returns to
standby status.
12
DOMESTIC HOT WATER
TEMPERATURE
+
clockwise to increase
the con-
F -

Temporary shutdown

During temporary absences, weekends, short trips, etc.:
- set the function selector to
With the power mains connected and the gas supply active, the boil-
er is protected by the systems:
- Anti-freeze
When the boiler water temperature falls below 5°C, the pump is
activated and, if necessary, the burner is activated at the minimum
setting to restore the water temperature to the safety range (35°C).
During the anti-freeze cycle, the
display.
- Pump anti-block function
The pump is activated every 24 hours of standby and, in any event,
3 hours after the last DHW request.
G - Shutdown for prolonged periods
If the boiler is not used for a long period of time:
- Set the function selector to
- Turn the main system switch to "OFF".
- Close the heating and domestic hot water system gas and water
cocks.
In this case, the anti-freeze and pump anti-block functions are
disabled. Empty the heating and DHW circuit if there is a freez-
ing hazard.
The Technical Assistance Service is available in the event of
problems in carrying out the above procedure.
H - Anti-legionella function
Anti-legionella function: Legionella is a disease that can be caught by
inhaling small droplets of water (aerosol) that contain the legionella
bacteria (this is found naturally in lakes and rivers throughout the world).
- +
(OFF).
symbol is shown on the digital
(OFF).