First start-up
38
5
5.4.1
Minimum heating power
1. Activate the chimney sweep function (F32) by press-
ing for 7 seconds the
key (Figure 6.1
p. 39). The
maximum time before being forced out of the func-
tion is 15 minutes.
2. Check that the CO
2
value conforms to that reported in
3. If this is not the case, unscrew the protection screw A
and adjust with a 4 hex key the screw 2 of the offset
adjuster (Figure 5.6
p. 37). To increase the value of
CO
2
turn the screw clockwise and vice-versa if you
want to decrease it.
4. Once completed the adjustment, tighten the protec-
tion screw A on the offset adjuster.
5.4.2
Maximum heating power
1. Press the
key of the heating side
for the cali-
bration of the maximum heating power.
2. Check that the CO
2
value complies to the value shown
in Table 5.4
3. If this is not the case, adjust the gas flow adjuster using
the screw 1 (Figure 5.6
p. 37). To increase the CO
2
value turn the screw counterclockwise and vice versa
if you want to decrease it.
4. After each adjustment on screw 1 of the gas flow ad-
juster, you have to wait about 30 seconds for the boiler
to stabilize itself to the set value.
5. Press the
key of the heating side
and check that
CO
2
value at minimum power has not changed. If so,
repeat the calibration described in previous Paragraph
5.4.1
6. Deactivate the chimney sweep function by switching
the boiler to OFF mode using the
button (
symbol appears on the display).
7. Disconnect the flue gas analyzer and screw the cap of
the flue gas analysis socket back on.
8. Replace the boiler front panel.
5.5
GAS CHANGEOVER
Contact a TAC for the gas change operation.
5.6
COMMISSIONING
1. Remove the boiler front panel (Paragraph 5.2 p. 30).
2. Power the boiler.
The ignition system will automatically activate
the system venting cycle function shown in the
display with the code F33, which lasts 2 minutes
(except the first time the appliance is switched
on, where the duration is 5 minutes).
When function F33 is active, the pump is activated
at intervals and the burner ignition request is disa-
bled. The regular operation of the boiler is allowed
only when the operation is completed.
3. Make sure that the circulator is not locked.
4. If it is locked, wait for the circulator to perform the au-
tomatic unlocking function (duration 3 minutes).
5. If the circulator is still locked, reactivate the automatic
unlocking function of the circulator (a further 3 min-
utes) by power cycling the boiler.
6. At the end of the above operations, open the gas tap.
7. To switch the boiler to the heating operating mode,
press the
key; the fixed
symbol will ap-
pear on the display, indicating that the function has
been activated.
8. When there is a request for service from the provided
control device, the burner ignition will start.
9. In case of lack of flame, the board repeats the igni-
tion operations again after the post-ventilation (20
seconds).
10. It may be necessary to repeat the ignition operation
several 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 E12 by pressing the reset key
.
11. Check the system pressure. If a decrease is observed,
open the filling tap again until the pressure reaches
1,5 bar. After the operation, close the filling tap again.
5.7
SWITCHING OFF
To switch off the unit, select the OFF mode using the
key (Figure 6.1
p. 39). In this way, the appli-
ance is in standby mode (
symbol appears on the dis-
play), ONLY the antifreeze function (system water) and the
boiler pump anti-lock function remain active.
For AY 100, remember to act on both modules.
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.
5.8
PROLONGED PERIODS OF
INACTIVITY
To switch off the unit, select the OFF mode using the
key (Figure 6.1
p. 39). In this way, the appliance
is in standby mode (
symbol appears on the display).
For AY 100, remember to act on both modules.
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
antifreeze 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