First start-up
46
5
enable is closed, the burner ignition will start.
9. In case of lack of flame, the board repeats the ignition opera-
tions again after the post-ventilation (20 seconds).
10. It may be necessary to repeat the ignition operation sever-
al times to remove any air in the gas pipe. Before repeating
the operation, wait about 5 seconds from the last ignition
attempt and unlock the boiler from error code E01 by press-
ing the reset key.
11. Check the system pressure. If a decrease is observed, open
the filling tap again until the pressure reaches 1,2 bar for
Caldaria 35 and 1,5 bar for Caldaria 55.1 and Caldaria 100.2.
After the operation, close the filling tap again.
5.8
ANTI-LEGIONELLA SERVICE SETTINGS
The anti-legionella service managed by the boiler is set by de-
fault active (parameter P15 at default value 1), but is activated
only if parameter P01 is set to value 2 or 3 (for Caldaria 35 and
Caldaria 55.1) or to value 0 (for Caldaria 100.2).
The service aims to bring the DHW buffer tank above 60 °C and is
carried out with the following settings, non-modifiable:
▶
The cycle is run for the first time one hour after electrically
starting the boiler.
▶
Then the cycle is run every 7 days, at the same time.
▶
Following loss of boiler voltage (e.g. after a blackout, even
if brief) the previous anti-legionella cycle timing is reset. So
the next anti-legionella cycle will be run one hour after elec-
trical start-up following the voltage loss.
It is not, therefore, possible to specify in advance the day
and time of execution of the anti-legionella disinfection
cycle.
Thermostatic valve
In order to avoid scalding or damage to persons, animals
or property we recommend installing a thermostatic
valve at the DHW buffer tank output.
If it is not possible to install a thermostatic valve at the
DHW buffer tank output, it is recommended to deacti-
vate the anti-legionella function (set parameter P15 to
0) and provide for the anti-legionella disinfection with
methods other than the thermal shock (e.g. chemical
methods, UV lamps or addition of ozone).
5.9
SWITCHING OFF
To switch off the unit, select the OFF mode using the
key (Figure 6.1
p. 47). In this way the appliance is in standby
mode (
symbol appears on the display), ONLY the antifreeze
function (system water) and the boiler pump anti-lock function
remain active.
As it is harmful to the appliance, it is essential to avoid
switching off the appliance by removing the power
supply to the external module.
For the antifreeze and pump anti-lock functions to be
active, the boiler must be left powered.
5.10
PROLONGED PERIODS OF INACTIVITY
To switch off the unit, select the OFF mode using the
key
(Figure 6.1
p. 47). In this way the appliance is in standby mode
(
symbol appears on the display).
Switch off the power using the main switch, outside the boiler,
and close the gas tap upstream of the appliance.
By removing the power supply, the automatic anti-
freeze and pump anti-lock functions will be disabled.
If it is expected that during the period of inactivity
the external temperature may fall below zero, it is
therefore advisable NOT to cut off the electrical and
gas supply to the appliance.
Summary of Contents for Caldaria 100.2 Condensing+ export
Page 55: ......
