Central Heating Mode; Domestic Hot Water Mode - Immergas NIKE Mini 24 Export Manual

Technical Documentation
NIKE Mini 24-28 operating sequence.

Central Heating mode

Power on
Boiler functioning knob on Winter
Enabling integrated board operation
The functioning knob (Winter position) enables boiler
operation in the central heating mode
Closing of the Room thermostat/ CRD operation
request
Either the room thermostat or the CRD (if installed)
detects the conditions that require operation in the central
heating mode
Powering the circulator and 3-way valve
The integrated board powers the boiler circulator and the
electric 3-way valve, the valve is moved into the central heat-
ing position
With the enable of the overtemperature safety thermostat the integrated board powers the gas valve coils
The integrated board sends the soft ignition current to the modulating coil
By means of the detection electrode the integrated board detects burner ignition
The burner works at a power that varies according to the type of request, to the adjustments/settings made and to the tem-
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Powering the ignition electrode
The integrated board powers the ignition electrode
Powering the gas valve coils
Burner ignition (automatic soft ignition)
Flame detection
Boiler working
peratures detected by the NTC delivery probe
Technical Documentation

Domestic Hot Water mode

Boiler functioning knob on Summer or Winter
Enabling integrated board operation
The functioning knob (Summer or Winter position) enables
boiler operation in the d.h.w. mode
Closing the d.h.w. flow switch
Drawing domestic hot water
Powering the circulator and 3-way valve
The integrated board powers the boiler circulator and the
electric 3-way valve, the valve is moved into the d.h.w. posi-
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Power one
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tion
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NIKE Mini Export