Immergas EOLO Star 23 kW User Manual

27
STESkW ed 05/06 EOLO Star 23 kW
Technical Documentation
Technical Documentation
EOLO Star 23 kW operating sequence
Central heating phase Domestic hot water phase
Power on
Boiler functioning button on Winter
Enabling integrated board operation
Closing of the functioning button contacts (Winter position)
enables operation in the central heating mode
Closing of the Room thermostat/ CRD operation request
Either the room thermostat or CRD (if installed) detects the
conditions that require operation in the central heating mode
Power on
Boiler functioning button on Summer or Winter
Enabling integrated board operation
Closing of the functioning button contacts (Summer position)
enables operation in the d.h.w. mode
Closing the d.h.w. flow switch
Drawing domestic hot water
Powering the pump
With the system pressure switch enable, the modulation board
powers the pump
Ú Ú
Ú Ú
Ú Ú
Ú Ú
Turning the pump off
e pump is not switched on or is turned off if there is an
ongoing central heating request
Flue pressure switch contact control
e integrated board verifies switching of the flue pressure switch contact as a result of the fan working (normally open contact NO)
Flue pressure switch contact control
e integrated board verifies the correct position of the flue pressure switch (normally closed contact, NC)
Closing the system pressure micro switch
When pressure in the primary circuit is higher than the minimum cutoff value, it causes closure of the system pressure switch contact
Ú
Ú
Ú
Powering the gas valve coils
With the enable of the overtemperature safety thermostat the integrated board powers the gas valve coils
Ú
Burner ignition (automatic soft ignition)
e integrated board sends the soft ignition current to the modulation coil
Flame detection
By means of the ionisation electrode, the integrated board detects burner ignition
Powering the ignition electrode
e integrated board powers the ignition electrode
Ú
Ú
Boiler working
e burner works at a power that varies according to the type of request, to the adjustments/settings made and to the temperatures
detected by the NTC probes
Ú
Ú
Powering the fan
e integrated board powers the fan
http://serviceimmergas.ro

Immergas EOLO Star 23 kW Specifications

General

Output Power	23 kW
Efficiency	93.5%
Weight	32 kg
Mounting	Wall-mounted
Max Operating Temperature	85°C
Ignition	Electronic
Heat Exchanger Material	Stainless Steel
Fuel Type	Natural gas
Water Pressure	0.3 - 6 bar