Riello START AQUA 28/60 BI, Installer And User Manual

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START AQUA 28/60 BI
22
Hole for flue analysis
tester
At the end of the checks:
- Set the function selector to the required mode.
- Adjust the selectors as required by the client.
The boiler is supplied to operate with natural gas (G20, except
MT). It has been factory set as specified on the technical data
plate and therefore does not require any calibration operations.
All checks and inspections must be carried out exclusively by
the Technical Assistance Service.
4.4 Display and faults
BOILER STATUS
DISPLAY ALARM TYPE
OFF status OFF None
Stand-by - Warning
ACF module block alarm
A01
Permanent block
ACF electronics fault alarm
Limit thermostat alarm
A02
Permanent block
Water pressure switch alarm
A04
Permanent block
Boiler NTC fault
A06
Warning
Heating NTC fault
A07
Temporary stop
Heating delivery sensor
over-temperature Temporary then
permanent
Delivery/return sensor
differential alarm
Permanent block
Parasite flame
A11
Temporary stop
Transitory awaiting ignition
80°C
(flashing)
Temporary stop
Water pressure switch trip
(flashing)
Temporary stop
Service calibration
ADJ
Warning
Installer calibration
External sensor detected
Warning
DHW request
60°C
Warning
Heating request
80°C
Warning
Anti-freeze heat request Warning
Flame detected Warning
To restore operation (unblock alarms):
Faults A01-02-03
Set the function selector to OFF , wait 5-6 seconds and return to
the required setting.
If the unblock attempts do not reactivate the boiler, please request
support from the Technical Assistance Service.
Fault A04
The digital display shows the fault code together with the symbol .
Check the pressure shown on the water gauge:
if the pressure is less than 0.3 bar, set the function selector to
(OFF) and adjust the filling valve until the pressure is between 1 and
1.5 bar. Turn the function selector back to the required setting.
If there are frequent drops in pressure, please request support from
the Technical Assistance Service.
Fault A06
The boiler operates normally but does not guarantee a stable domes-
tic hot water temperature, which is set to around 50°C.
Please request support from the Technical Assistance Service.
Fault A07
Please request support from the Technical Assistance Service.
4.5 Temporary shutdown
During temporary absences, weekends, short holidays etc., set the
function selector to
(OFF).
During temporary absences (weekends, short holidays etc.), set the
function selector to
(OFF-unblock).
With the power mains ON and the gas supply active, the boiler is
protected by the systems:
- Anti-freeze: This function is activated if the boiler water tempera-
ture falls below 5°C. The pump runs a 15 minute cycle every 2
hours as follows: the pump stops when the boiler water tempera-
ture exceeds 10°C; the burner is ignited to the minimum in heating
mode when the boiler water temperature falls below 5°C until the
water temperature reaches 30°C, after which a post-pump phase
runs for 30 seconds.
- The boiler water temperature is also checked (via the sen-
sor). When the temperature reading falls below 5°C a request
is activated for operation in DHW mode at the minimum setting
(pump+burner), which continues until the boiler water temperature
reading rises above 10°C.
- Pump anti-block function: the pump is activated every 24 hours
of standby and, in any event, 3 hours after the last DHW demand.
4.6 Shutdown for long periods
If the boiler will not be used for a long period of time, you must:
- set the function selector to
(OFF).
- turn the main system switch 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 risk of freezing.
4.7 Maintenance
Periodic maintenance is essential to the safety, efficiency and lifeti-
me of the boiler. The appliance must be systematically controlled at
regular intervals to make sure it works correctly and efficiently and
conforms to legislative provisions in force.