REXNOVA ISA 20 BITHERMAL, Инструкция по установке, эксплуатации и обслуживанию

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SPECIAL FUNCTIONS
ANTI-FROST:
This function is always active, whatever mode
the boiler is in.
In order to allow this function to fulfill its
purpose, the device must be:
• Powered on
• Connected to the mains gas supply
• The shut-off valves on the central heating
circuit must be open
• The shut-off valve on the gas supply line
must be open
• No fault conditions must be present
If the temperature measured by the sensor
on the central heating flow circuit is < 6°C,
CIRCULATOR DEVICE/DIVERTER VALVE ANTI-
LOCK FUNCTION:
The function is active when the boiler is in
“SUMMER” or “STANDBY / OFF” modes
In order to allow this function to fulfill its
purpose, the device must be:
• Powered on
• The shut-off valves on the central heating
circuit must be open
• No fault conditions must be present
The function is activated if there are no
requests to the boiler in the previous 24 hours.
The function prevents the device locking
up, which is possible after long periods of
inactivity, by switching the diverter valve
(when present) to the central heating circuit
and running the circulator device for a
predetermined time (15 sec).
circulation is activated, the diverter valve
(when present) switched to the CH circuit and
the burner lit at minimum power.
When the temperature measured by
the sensor reaches 8°C, the function is
deactivated by turning off the burner and
restoring the previous conditions.
When an external sensor is fitted, the function
is activated when the temperature measured
by the sensor on the CH flow circuit is <6°C and
the temperature measured by the external
sensor is < 2°C. The function is deactivated
when the temperature measured by the
sensor on the CH flow circuit reaches 8°C.
ANTI FREQUENT IGNITION FUNCTION:
This function is active when the boiler is in
heating mode and the P03 parameter in the
“INSTALLER” menu is enabled. The function
does not allow unnecessarily frequent
ignitions to satisfy heating requests when the
system water temperature is near that set by
the selector.
The P03 parameter may show 0 value when
the function is not enabled and may reach
up to 180 value which indicates the wait time
in minutes between one ignition and the next.
THIS FUNCTION DOES NOT GUARANTEE COMPLETE AND CERTAIN PROTECTION OF
THE SYSTEM FROM TOTAL OR PARTIAL FREEZING!
WHEN CONSIDERED NECESSARY, AND WHEN THE SYSTEM IS CERTAIN TO BE
EXPOSED TO LOW TEMPERATURES, IT IS POSSIBLE TO ADD ANTIFREEZE TO THE
CENTRAL HEATING CIRCUIT.
ONLY USE ANTIFREEZE WHICH IS COMPATIBLE WITH THE CENTRAL HEATING SYSTEM
DEVICES AND EQUIPMENT. CAREFULLY FOLLOW THE INSTRUCTIONS FOR USE.