How To; A How To Top-Up The System Pressure; A How To Reset The Appliance; A How To Shut Down The System For Short Periods - Riello VOKERA VISION PLUS Series User Instructions

3A HOW TO...
3.1A HOW TO TOP-UP THE SYSTEM
PRESSURE
The system pressure must be checked periodically to ensure
the correct operation of the boiler. Scroll the INFO menu to
10.18, the displayed pressure should be reading between 1 and
1.5 BAR when the boiler is in an off position and has cooled
to room temperature. If the pressure requires 'topping-up' use
the following instructions as a guide.
- Locate the filling valve connections (usually beneath the
boiler, see Fig. 2).
- Attach the filling loop to both connections.
- Open the filling valve slowly until you hear water entering the
system.
- Close the filling valve when the pressure is between 1 and
1.5 bar.
- Remove the filling loop from the connections.
control valve
temporary
connection
ow pipe

3.2A HOW TO RESET THE APPLIANCE

When the fault code is displayed, the appliance will require to
be reset manually. Before resetting the boiler, check what ac-
tion is required to be taken, using the information on the fault
code table.
RESET FUNCTION
Press the RESET button. At this point, if the correct operating
conditions have been restored, the boiler will restart
automatically. There are a maximum of 3 consecutive attempts.
In case of all the attempts are exhausted the definitive fault
E099 occurs on the display. To restore from an 'E099' fault
code, it is necessary to momentarily switch off the electrical
supply to the appliance and then restore the electrical supply
to the appliance.
DAY
IMPORTANT
If the appliance requires to be reset frequently, it may be indica-
tive of a fault, please contact your installer or Vokèra Customer
Services for further advice.
3.3A HOW TO SHUT DOWN THE SYSTEM FOR
SHORT PERIODS
The system and boiler can be shut down, in the event of
temporary absences (weekends, short breaks, etc.) setting the
boiler status to OFF .
Fig. 2
control
valve
double
check- valve
supply
pipe
DAY
While the electrical supply and the fuel supply remain active,
the boiler is protected by the systems:
- heating anti-freeze: this function is activated if the temperature
measured by the flow sensor drops below 5°C. A heat request
is generated in this phase with the ignition of the burner at
minimum output, which is maintained until the outlet water
temperature reaches 35° C;
- domestic hot water anti-freeze: this function is activated if
the temperature measured by the domestic hot water probe
drops below 5°C. A heat request is generated in this phase
with the ignition of the burner at minimum output, which is
maintained until the outlet water temperature reaches 55° C.
b
The operation of the ANTI-FREEZE function is indicated
by a scrolling message on the interface display: AF1
(DHW antifreeze in progress) - AF2 (CH antifreeze in
progress), as the case may be.
- circulator anti-locking: the circulator activates every 24
hours of stoppage for 30 seconds.
3.4A HOW TO SHUT DOWN THE SYSTEM FOR
LONG PERIODS
If the house is to be left unoccupied for any length of time –
especially during the winter – the system should be thoroughly
drained of all water. The gas, water, and electricity supply to
the house should also be turned off. For more detailed advice
contact your installer.
3.5A HOW TO CARE FOR THE APPLIANCE
To clean the outer casing use only a clean damp cloth. Do not
use any scourers or abrasive cleaners.
3.6A KEYBOARD LOCKOUT FUNCTION
Pressing buttons 1+3 for at least 2sec activates the key
lockout; pressing buttons 1+3 again for at least 2sec re-
activates the key. The display will show LOCK.
+
1
Button '2' (reset) remains active if there is a fault to allow the
alarm to be reset.
+
RESET MENU
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