Fiamma C series, Use And Maintenance Manual

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17
ANTIFREEZE FUNCTION
In case the delivery probe measures a temperature lower than 7°C, the circulator is
activated.
If the temperature goes down the value of 4°C the main heat exchanger is ignited until the
delivery temperature has reached 20°C. The antifreeze function is active also with the
boiler
turned OFF (function in standby mode but with bright switch on).
DHW DEMAND INSTANTANEOUS
When receiving a request by the microswitch sanitary, the circulator is powered and controlled
commands are G1, G2, G3, G4 relative to the primary heat exchanger leading the delivery
temperature to the setpoint value sa a differential be set with parameter N°7.
FUNCTION ECONOMY / COMFORT OF SANITARY
In ECO mode in standby condition is not activated any resistance of the primary heat exchanger.
When COMFORT mode is active in standby condition the primary heat exchanger temperature
is maintained in order to ensure a prompt response of the sanitary.
The primary heat exchanger is maintained at a temperature equal to the DHW set point plus
a differential temperature set by parameter N°7.
After the call for the pump it remains powered for a time equal to the value set by
parameter N°3.
DEGASSING FUNCTION
The degassing function is activated by simultaneously pressing the keys J4 and J7.
During this function are altered states of operation to maximum and minimum speed of the
circulating pump PWM in order to facilitate the escape of air bubbles from the hydraulic circuit.
The sequence is illustrated below.
When this function is on the display shows a timer indicating the time at the end of the function.
V el. MA X
(15 sec)
Vel. MIN
(20 sec) Vel. MIN
(120 sec) Vel. MAX
(5 sec) Vel. MIN
(5 sec)
2 cycles 60 cycles