2
MODE
SELECTOR SWITCH
HEATING
TEMPERATURE
SELECTOR
HOT WATER
TEMPERATURE
SELECTOR
PRESSURE GAUGE
DISPLAY
HOT WATER TEMPERATURE SELECTOR
Move the selector clockwise to increase the hot water outlet temperature, or counter-clockwise to reduce the temperature
PRESSURE GAUGE
Ensure the system pressure is set correctly (minimum 0.5-bar)
MODE SELECTOR SWITCH/HEATING TEMPERATURE SELECTOR
Mode selector switch:
Fig. 1
Hot water only
- Select this position if you want the boiler to supply hot
water only (no heating)
Hot water temperature selector
: move the selector clockwise to increase
the DHW outlet temperature, or counter-clockwise to reduce the temperature
(range: 37°C-60°C). The display shows the temperature values.
Boiler at OFF/standby
- Select this position when you want the boiler to
be switched off for short periods (days) or if the boiler requires to be reset
The display shows “- -”.
Heating & hot water
- Select this position when you want the boiler to re-
spond to a heating and hot water request from the time-clock programmer
Heating temperature selector
: move the selector clockwise to increase the
heating outlet temperature, or counter-clockwise to reduce the temperature
(range: 40°C-80°C for standard central heating).
The automatic temperature control function (SARA) is set within the blank
bullet points.
The display shows the temperature values.
Pressure gauge
shows the current pressure of your heating system, the
gauge should be set between 1 and 1.5 BAR. When the appliance is oper-
ating the gauge may rise or fall slightly, this is quite normal. The minimum
permissible level for the safe and efficient operation of the appliance is 0.5
BAR. Should the pressure fall below 0.5 BAR, the boiler may lockout.
correct pressure
value
DHW pre-heat function -
Turning the domestic hot water temperature
adjustment knob to the symbol activates the pre-heating function. Bring the
domestic hot water temperature adjustment knob back to the required po-
sition. The activation of this function is indicated on display with the
P
icon
ON. This function keeps the water in the domestic hot water exchanger
hot, to reduce standby times when a request is made. The display shows
the delivery temperature of the heating water or the domestic hot water,
according to the current request. To deactivate the pre-heat function, rotate
the domestic hot water temperature adjustment knob back to the symbol.
Bring the domestic hot water temperature adjustment knob back to the
required position. This function cannot be activated when the boiler is OFF:
function selector to OFF position.
SARA function
