40
40
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Id
Parameter
Description
d 0.0
Not used
d 0.1
Displays the combustion signal
d 0.2
Displays the primary heat exchanger output instant heating
fl
ow temperature
d 0.3
Displays the instant storage tank unit temperature
d 0.4
Displays the values set for central heating set
d 0.5
Displays the values set for DHW set
d 0.6
Displays the external environment temperature (if optional external probe present)
If the temperature is below zero, the value is displayed
fl
ashing.
d 0.7
Displays the temperature read on the
fl
ue probe (probe 1)
d 0.8
Displays the system return water temperature.
d 09
Displays the list of the last five anomalies.
(to scroll the list, turn the CH temperature selector (4)). Turning the selector changes the set central heating and the boiler
can be switched off.
d 1.0
Anomaly list reset. Once “d 1.0” is displayed, press the Reset button; deletion is confirmed via the “88” symbols
fl
ashing for
two seconds.
d 1.1
Displays the temperature read on the safety
fl
ow probe
d 1.2
Displays the pump operating speed
d 1.3
Not used
d 1.4
Displays the pump
fl
ow rate (lh/100)
d 1.5
Displays the fan operating speed (rpm/100)
d 1.6
Displays the temperature read on the
fl
ue probe (probe 2)
2.9 DRAINING THE SYSTEM.
To drain the boiler, use the special draining valve (Fig. 34).
Before draining, ensure that the filling cock is closed.
ATTENTION:
if glycol was input in the system
’
s circuit,
make sure it is discharged into the waste
water system, pursuant to regulation EN 1
7
1
7
.
2.10 DRAINING THE DOMESTIC HOT WATER
CIRCUIT.
To do this, always close the domestic cold water inlet upstream
of the appliance.
Open any domestic hot water tap to discharge the pressure from
the circuit.
2.
7
BOILER SHUTDOWN.
Switch the boiler off by putting it in “off” mode, disconnect the
onmipolar switch outside of the boiler and close the gas cock
upstream from the appliance. Never leave the boiler switched on
if left unused for prolonged periods.
2.
8
RESTORE CENTRAL HEATING SYSTEM
PRESSURE.
Periodically check the system water pressure.
Th
e boiler pressure
gauge should read a value of between 1 and 1.2 bar.
If the pressure falls below 1 bar (with the circuit cold) restore normal
pressure via the valve located at the bottom of the boiler (Fig. 34).
N.B.:
close the valve after the operation.
If pressure values reach around 3 bar the safety valve may be
activated.
In this case, remove water from a radiator air vent valve until a
pressure of 1 bar is achieved, or ask for assistance from profes-
sionally qualified personnel.
In the event of frequent pressure drops, contact qualified staff for
assistance to eliminate the possible system leakage.
2.
6
INFORMATION MENU.
By pressing the button “
“, the “Information menu” is ac-
tivated for at least 1 second, displaying some boiler operating
parameters.
Press the "
" button (4) to scroll the various parameters.
To exit the menu, press the “
” button up to the end of the list,
or by pressing the “
” button or by waiting for 15 minutes.
With the menu active, the indicator (14) will alternately show
the indication of the parameter via the letter “d” plus the num-
ber of the parameter that is being displayed and the value of the
parameter itself.
