FAR 9611, Simplified User Manual, Page: 5 / 16

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nominal room T°
BUS address (1)
Mixing valve dynamics
max flow T°
Heating curve
Parameter description Selector
Turning the handle to the RUN position brings up the flow temperature on the display. Press the OK button, in the event
of demand from the room thermostat and the display shows the required flow temperature as calculated by the control
unit. This value depends on the temperature detected by the external probe and on the preset heating curve.
In offset operation it is advisable to install a safety thermostat on the supply pipework after the pump.
In RUN mode, position the incremental translator on the symbol , in order to to read the temperature detected by
the external probe.
Additional functions:
Frost protection function
Such function prevents water in the heating system from freezing by means of a circulating pump. The anti-freeze
function is activated when the temperature detected by the external probe drops below 0 °C, or when the temperature
detected by the supply probe drops below 7°C.
EEPROM control function
The software loaded on the control unit checks automatically all the preset parameters every 10 minutes. If one parameter
is not within the limits indicated, it will be replaced by the corresponding standard value.
The value limit excess will be shown on display with the number E81.
Pump blocking protection
The controller prevents from pump blocking following longer periods out of operation.The function activates the pump
for 5 seconds , every 24 hours.
5
Mixing valve blocking protection
If the mixing valve is not operated for more than 24 hours, the controller switches off the pump and fully opens the valve
once only, monitoring the flow temperature. This function is cancelled at maximum preset flow temperature – 5K.
Manual operation /test
Positioning the main selector on it is possible to carry out a mixing valve opening/closing and a pump starting
test. Press OK and the “г0” symbol will be shown on the display. Then turn the incremental selector to test the valve and
the pump and on the display will appear the following values.
Display value Selector position Parameter description
г1 Mixing valve opening
г2 Mixing valve closing
г3 Pump starting
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