54
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
3.15 FLUE INSTALLATION (FU).
To activate the “Flue” function access the special functions as
described in Par. 3.12
and select the “FU” function.
Attention:
before performing the test, ensure that the condensate
drain trap has been filled correctly and check that there are no
obstructions in the air intake circuit and flue exhaust.
Using this function activates the fan at a fixed speed (6000 rpm)
for 15 minutes.
In this phase the symbols (
) and (
) are displayed flashing,
while the symbol ( ) is displayed permanently on, the function
can be stopped by simply pressing the button “
”.
3.16 MAINTENANCE FUNCTION (MA).
Using this function you can activate some operating devices of the
boiler without starting it, thus verifying the functionality.
The function is active for 15 minutes and it can be stopped by
pressing the button “
”.
To activate the “Maintenance” function access the special functions
as described in Par. 3.12 and select the “MA” function.
The following loads can be activated within this function:
- Fan (Fn): the fan is brought to ignition speed. Using the buttons
“
” you can increase or decrease the fan speed.
- Circulator (Pu): the circulator is brought to maximum speed,
the relative speed is shown on the display, using the buttons
“
” you can increase or decrease the circulator speed.
- Three-way (3d): the symbol is shown on the display according to
the position of the valve, DHW (
) or central heating (
),
using the buttons “
” you can change the valve position, tak-
ing care to wait for the completion of passage between statuses.
- Configurable relay (rl): the configurable relay in the boiler is
energised.
3.17 "CHIMNEY SWEEP” FUNCTION.
When activated, this function forces the boiler to variable
output for 15 minutes.
In this state all adjustments are excluded and only the safety
thermostat and the limit thermostat remain active. To activate the
chimney sweep function, press the “
” button until activation
of the function in the absence of DHW requests.
Its activation on the boiler display is confirmed by the indicators
flashing at the same time (Det. 17 and 18 Fig. 34).
50
This function allows the technician to check the combustion
parameters.
Once the function is activated, it is possible to select whether to
make the chick in CH status or DHW status by opening any hot
water cock.
Using the buttons “
” you can select between three predefined
power levels:
-“0%”
- Max CH output (P2)
- Max DHW output (P0).
While by using the buttons “
” you can select the power from
0% to max DHW output (P0), with intervals of 1%.
The central heating or DHW operating mode is displayed by the
relative symbols
or
.
After the checks, deactivate the function by switching the boiler
off and then back on again.
