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DIRECTIONS FOR USE
Your system must be checked once a year by an approved
installer or maintenance company.
Starting the burner
During operation, the burner starts automatically as soon as
the boiler temperature drops under the required set point and
it stops as soon as the boiler reaches that temperature.
Control panel
Start/Stop
switch
Heating system
The central heating circuit must be pressurized (see in the
chapter "Installation" how to define the system pressure).
The pressure indicator is located on the right-hand side of the
display.
If your system needs to be refilled more than twice
a year, please contact your installer.
The CH pressure must be a minimum of 1 bar and must be
checked by the end user on a regular basis. If the pressure
drops under 0.5 bar, the integrated water pressure switch
blocks the appliance until the pressure in the system returns
to a level above 0.8 bar. The connection for a fill valve is
provided underneath the appliance. The installer can also fit
the system with a separate valve. Make sure that the appliance
is powered off when filling the system. TTo do this, toggle the
Start/Stop switch located on the left of the screen to Off. (see
the Control panel).
For more information, please ask your installer when the system
is delivered.
A safety valve is provided at the underneath of the appliance.
If the system pressure exceeds 3 bars, this valve opens and
drains the water from the system. In this case, please contact
your installer.
SETTING THE PARAMETERS
Also see the user label located inside the valve on the control
panel:
664Y3000.A
USERS GUIDE
Setting the domestic hot water temperature
(Hot water temperature)
- Press Mode: The screen displays PARA.
- Press Step: the first character is 1 and the last two characters
give the current hot water temperature setting.
- To change this temperature, press + or - until the last two
digits show the desired temperature value.
- Press Store to save the new temperature setting.
- Press Mode twice to return to Pilot mode (normal operating
mode).
Enabling or disabling the hot water heating mode
(hot water)
- Press Mode: The screen displays PARA.
- Press Step twice: the first character is 2 and the last two
characters give the current setting:
00 = disabled; 01 = enabled.
Pressure
- To change this parameter, press + or - until the screen
gauge
displays the desired value:
00 = disabled; 01 = enabled.
- Press Store to save.
- Press Mode twice to return to Pilot mode (normal operating
mode).
Enabling or disabling Central Heating mode:
(heating)
- Press Mode: The screen displays PARA.
- Press Step three times: the first character is 3 and the last
two characters give the current setting:
00 = disabled; 01 = enabled.
- To change this parameter, press + or - until the screen
displays the desired value:
00 = disabled; 01 = enabled.
- Press Store to save.
- Press Mode twice to return to Pilot mode (normal operating
mode).
Setting the central heating temperature:
(maximum temperature for the heating circuit)
- Press Mode: The screen displays PARA.
- Press Step four times: the first character is 4 and the last
two characters give the current central heating temperature
setting.
- To change this temperature, press + or - until the last two
digits show the desired temperature value.
- Press Store to save the new temperature setting.
- Press Mode twice to return to Pilot mode (normal operating
mode).
Fault:
The temperature setting for the appliance and the safety
functions for its various parts are continuously monitored by
a regulator controlled by a microprocessor (the MCBA). In the
event of a fault, this MCBA disables the appliance and displays
an error code: the screen flashes displaying E as the first
character, followed by the error code.
To reset the appliance:
- Press "Reset" on the screen.
- Contact your installer of the fault happens again.
EN • 5
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