22
MYNUTE X
In this case, the anti-freeze and anti-blocking systems are deactivated. Drain the heating
and domestic water system if there is any risk of freezing.
Closing
position
ON
OFF
4.23 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
RESET
+
MENU
+
3
4.20 INFO menu
Pressing key 3 on the display screen displays a list of information regarding the operation of the
boiler listed by parameter name and value. Passing from the display of one parameter to the
next takes place by pressing respectively the keys and . Pressing the key allows
the selected parameter to be displayed; pressing the key returns you to the main screen:
4.21 Temporary switch-off
In the event of temporary absences (weekends, short breaks, etc.) set the status of the
boiler to OFF .
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.
4.22 Switching off for lengthy periods
The long term non use of the boiler causes the following operations to be carried out:
- set the status of the boiler to
- set the system's main switch to "off"
- close the fuel and water taps of the heating and domestic hot water system.
name
only if parameter P1.05 = 1
Description
I0.01 SCREED HEATING HOURS Number of hours passed with screed heater function
I0.02 CH PROBE Boiler delivery sensor value
I0.03 RETURN PROBE Boiler return sensor value
I0.04 DHW PROBE Domestic hot water probe value
I0.08 EXHAUST PROBE Flue gas probe value
I0.09 OUTDOOR TEMP PROBE Outdoor temperature sensor instantaneous value
I0.10 FILTERED OUTDOOR TEMP
Outdoor temperature fi ltered value used in the thermoregulation algorithm for calculating the
heating setpoint
I0.11
DHW FLOW RATE For instantaneous boiler with fl owmeter
DHW SETPOINT Only in case of OTBus connection
I0.12 FAN SPEED Number of turns of the fan (rpm)
I0.13 MAIN ZONE OUTLET Main zone fl ow sensor value (when P4.12 = 1)
I0.14 ZONE 1 OUTLET Zone 1 fl ow sensor value (when P4.13 = 1)
I0.15 EXHAUST PROBE HOURS Number of hours the heat exchanger has been operating in “condensing mode”
I0.16 MAIN ZONE SET Main zone delivery setpoint
I0.17 ZONE 1 SET Zone 1 delivery setpoint (when P4.23 = 1)
I0.18 WATER PRESSURE System pressure
I0.30 COMFORT Domestic hot water comfort (COFF, CSTD, CSMT)
I0.31 SUN ON Special functions active for high domestic hot water temperature inputs
I0.33 PCB ID Electronic board card identifi cation
I0.34 PCB FW Electronic board card fmw revision
I0.35 INTERFACE FW Interface fmw
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