Riello START AQUA 24 BI Installer And User Manual page 7

C.T.R. FUNCTION
Unblock function
To restore operation, turn the function selector to
seconds and then set the function selector to the required position.
The boiler restarts automatically.
NOTE: if the unblock attempts do not restart the boiler, contact the
Technical Assistance Service.
UNBLOCK FUNCTION
4.3 Checks during and after commissioning
After commissioning, ensure that the START AQUA 24 BI boiler runs
the start-up and subsequent shutdown procedure correctly using the:
- Function selector
- Calibration of the heating water temperature selector and DHW
temperature selector.
- Required room temperature (adjusting the room thermostat or
timer).
Check operation in DHW mode by opening a hot water tap with the
function selector in Summer mode, Winter mode and Winter mode
with pre-heating.
Check that the boiler stops completely when turning the main system
switch to "OFF".
Operate the appliance continuously for a few minutes by turning the
main switch to "ON", setting the function selector to Summer and
keeping the DHW utility tap on. The processing binders and residue
evaporate and the following can be checked:
- supply gas pressure
- combustion.
Supply gas pressure check
- Turn the main system switch OFF.
- Unscrew the case screws (A).
- Move the bottom of the case forward and then upwards to detach
it from the frame.
- Press the side buttons of the panel and then turn it forwards.
OFF, wait 5-6
- Unscrew the tapping point screw upstream of the gas valve by ap-
proximately two turns and connect a pressure gauge.
- Open a hot water tap to the maximum setting to empty the boiler.
On the control panel:
- Set the function selector to
perature selector to the maximum.
- Turn the boiler on by setting the main switch to "ON".
- Open a hot water tap to the maximum flow rate.
- With the burner lit at the maximum output, check that the gas pres-
sure is between the minimum and the nominal supply values as
specified in the table on the next page.
- Turn off the hot water tap.
- Disconnect the pressure gauge and tighten the pressure tapping
point upstream of the gas valve.
Tapping point
upstream of
the valve
Combustion check
- Install the "Flue analysis collection" kit in the straight pipe section
after the hood output, at least 400-500 mm from the hood (as en-
visaged by current standards). To install, follow the instructions
supplied with the kit.
- Turn the main system switch OFF.
- Open a hot water tap to the maximum setting to empty the boiler.
- Set the function selector to
perature selector to the maximum.
- Turn the boiler on by setting the main switch to "ON".
- Open a hot water tap to the maximum flow rate.
- With the boiler at the maximum output, you can check combustion.
A
- On completion of the check, shut off the hot water tap.
- Remove the tester sensor and close the test point.
- Close the panel and refit the case, following the disassembly pro-
cedure described above in reverse order.
ENGLISH
Summer mode and the DHW tem-
Summer mode and the DHW tem-
7