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STESkW ed 05/06

EOLO Star 23 kW

Technical Documentation

Loads.

This board is always powered regardless of the position of the functioning button (S2)

(see integrated board operation)

Integrated board

It is powered by the integrated board when there’s either a central heating or antifreeze

request.

It permits circulation in the primary circuit.

Boiler circulator

(M1)

It is powered at mains voltage by the integrated board when it is necessary to ignite the

burner.

It permits the ﬂow of gas to the burner.

Gas valve (Y1)

(main coils)

It is controlled by the integrated board that provokes a spark between its end and the

burner surface that ignites the air/gas mix.

Ignition electrode

(E1)

It ensures the ﬂow of air inside the sealed chamber and the exit of fumes produced by

combustion.

It is powered by the integrated board.

Fan

(M20)

Low voltage circuit.

This device is to control the appliance remotely

(SUMMER / WIN-

TER selection, setting and indicating temperatures, displaying alarms,

resetting, etc.)

and acts as a weekly timer/room thermostat.

If the CRD is installed the X40 jumper must be removed.

Remote digital control

(CRD)

(optional)

See Remote

Digital Control

Operation

(CRD)

This switch acts on the integrated board after some domestic water

has been drawn, causing the boiler to work in the d.h.w. mode.

When idle it enable operation in the central heating mode.

D.h.w. ﬂow switch

(S4)

Interrupted

contact

Safety devices and controls.

When pressure in the boiler circuit is below 0.3 bar the burner

switches oﬀ.

System pressure switch

(S5)

Interrupted

contact

This acts on the integrated board and enables burner operation

when the fumes are expelled correctly.

When closed and the fan is oﬀ, it does not enable the start of the

ignition cycle.

Flue pressure switch

(S6)

Changing

contact

http://serviceimmergas.ro

Содержание EOLO Star 23 kW

Страница 1: ...antaneous wall hung with room sealed boilers EOLO Star 23 kW S C FUTURE LINE INSTAL S R L str Biharia nr 67 77 sector 1 Bucuresti ROMANIA serviceimmergas ro Dispecerat Non Stop Tel Fix 021 201 11 14 http serviceimmergas ro ...

Страница 2: ...http serviceimmergas ro ...

Страница 3: ...ith display and push buttons the operating parameters can be displayed and set General features The hydraulic circuit is equipped with a copper bithermal type water gas exchanger for the production of hot water for central heating and domestic use an automatic by pass on the system and a ﬂow switch for tapping the domestic hot water Combustion air intake inside the sealed chamber and the expulsion...

Страница 4: ...sure point positive signal 10 Pressure point negative signal 11 Flue pressure switch 12 Delivery probe 13 Safety thermostat 14 System expansion vessel 15 Automatic air vent Main components 16 Boiler circulator 17 System pressure switch 18 Manifold 19 3 bar safety valve 20 Boiler pressure gauge 21 System draining cock 22 Draught diverter 23 Rapid heat exchanger 24 Ignition detection electrodes 25 B...

Страница 5: ...ture 4 Push button to reduce d h w temperature 5 Push button to increase system water temperature 6 Push button to reduce system water temperature 7 Boiler pressure gauge 8 D h w functioning mode Control panel 9 Displays temperatures and error codes 10 Unit of measure 11 Central heating functioning mode 12 Winter 13 Summer 14 Power supplied 15 Burner operating http serviceimmergas ro ...

Страница 6: ...heat ing system through the delivery M and return R pipes Legend 1 D h w probe 2 D h w ﬂow switch 3 Gas valve 4 Flow limiter 5 Draining cock 6 Burner 7 Rapid exchanger 8 Fan 9 Sealed chamber 10 Flue pressure switch 11 Draught diverter 12 System expansion vessel 13 Delivery probe 14 Safety thermostat 15 Automatic air vent 16 Boiler circulator 17 System pressure switch 18 Automatic by pass 19 3 bar ...

Страница 7: ...equal number of cross shaped pipes for the direct transit of domestic hot water see illustration below These pipes are plumbed in parallel in groups of three on the central heating circuit and in series on the d h w circuit The overheating safety thermostat 2 is ﬁxed on the side of the exchanger exit with a fork 1 The relevant NTC delivery probe is screwed into place on the central heating deliver...

Страница 8: ...tic cold water inlet and permits pressurisation of the central heating system It is located underneath the brass manifold 1 to which it is screwed 3 bar safety valve 2 This valve prevents the safety pressure being exceeded in the circuit 3 bar It is on the front of the manifold 1 secured to it on the side with an Allen screw When this valve triggers water exits from the boiler return pipe Automati...

Страница 9: ... with a dynamic pressure of 0 3 bar the ﬂow switch 2 enables the boiler to operate in the d h w mode This is done by means of a magnet that by lifting when hit by the ﬂow of cold water moves near to an electrical contact reed relay causing it to move thanks to the eﬀect of the magnet When the contact closes which is located outside the pipe through which the water ﬂows it enables the modulation bo...

Страница 10: ...ited They are electrically connected in parallel and supplied by mains power through a special connector 2 Modulation coil 1 This is a low voltage coil controlled by the integrated board It controls the gas valve stabiliser and permits changing of the outlet pressure in a way proportionate to the DC running through it Gas circuit Burner The burner consists of 12 horizontal Venturi tubes 6 inside w...

Страница 11: ...o the gas valve 4 outlet and its negative pressure point is connected to the positive pressure point on the ﬂange with holes located at the top of the sealed chamber see ﬁgure Gas valve SIT 845 Setting maximum pressure Draw some domestic hot water after having put its temperature selector on maximum Turn the brass nut 3 clockwise to increase pressure and in the opposite direction to reduce it Sett...

Страница 12: ...8 On the top of the outside of the sealed chamber are two holes with screw closing They are accessible from the front and are used to sample combustion air 7 and fumes 8 Signal pressure points ﬂue pressure switch 9 10 On the top of the outside of the sealed chamber are two pressure points with screw closing By means of these points the signal at the ends of the ﬂue pressure switch 5 can be measure...

Страница 13: ...mm H2 O EOLO Star 23 kW 150 15 3 130 13 26 from serial number 3078555 It is located at the top inside the sealed chamber and by means of the relative points measures the diﬀerence in pressure between the fan output negative signal and the inside of the sealed chamber itself positive signal The signal measured by the pressure switch varies according to the length of the aspiration exhaust terminals...

Страница 14: ...ic caps 3 sup plied with the boiler If coaxial pipes are used the intake of combustion air is done exploiting the concentric hole outside the exhaust ﬁtting 5 Intake and Exhaust Kits The kits and their accessories permit use of four concentric systems and two split systems As regards pressure losses relating to each accessory the various possible combinations and the use of the diaphragms depend i...

Страница 15: ...ight verti cal metres 80 80 Ø coupling type separator kit Both pipes are 80 mm in diameter Connections to the boiler are done using the two speciﬁc ﬂanges that allow discharge 4 from the centre ﬁtting and aspiration 3 from one of the two side holes The maximum permitted length aspiration exhaust is 33 straight horizontal metres and 41 straight vertical metres To avoid condensate problems the exhau...

Страница 16: ...mounted on the integrated board Line fuse F1 Neutral fuse F2 Fuse 3 15 AF 250 V Legend B1 Delivery probe B2 D h w probe CRD Remote digital control optional DS1 Display E1 Ignition electrode E2 Detection electrode E4 Safety thermostat F1 Line fuse F2 Neutral fuse M1 Boiler circulator M20 Fan S2 Functioning button S3 Block reset push button S4 D h w ﬂow switch S5 System pressure switch S6 Flue press...

Страница 17: ... is powered by the integrated board Fan M20 Low voltage circuit This device is to control the appliance remotely SUMMER WIN TER selection setting and indicating temperatures displaying alarms resetting etc and acts as a weekly timer room thermostat If the CRD is installed the X40 jumper must be removed Remote digital control CRD optional See Remote Digital Control Operation CRD This switch acts on...

Страница 18: ...e 10 kohm 25 C It lets the integrated board measure the outlet temperature of the domestic hot water If it breaks functioning in the d h w mode is stopped but function ing in the central heating mode is allowed It is inserted in the d h w outlet pipe connected to the bithermal exchanger D h w probe B2 NTC probe 10 kohm 25 C It is powered by the integrated board with a variable continuous current I...

Страница 19: ...ivery probe B1 is below the value set on the boiler s control panel then the P C B energises the request relay K2 This operation causes the closing of the 2 contacts which starts the ignition cycle ﬁrst of all supplying the ignition electrode E1 and then both the coils of the gas valve Y1 Burner ignition is detected by the integrated board by means of the ionisation electrode E2 Remote digital con...

Страница 20: ...by the NTC d h w probe B2 is below the value set on the boiler s control panel or on the CRD if installed and if the fumes pressure switch contact S6 is idle NC the adjustment circuit powers the fan M20 by means of relay K4 If the contact of the system pressure switch S5 is closed pres sure in the primary circuit higher than the minimum value the board being enabled by the safety thermostat E4 and...

Страница 21: ... integrated board powers the boiler circulator M1 by means of relay K3 In the meantime if the ﬂue pressure switch S6 contact is idle NC the adjustment circuit powers the fan M20 by means of relay K4 If the following conditions occur the system pressure switch contact S5 is closed pressure in the primary circuit higher than the minimum value the safety thermostat E4 is enabled the ﬂue pressure swit...

Страница 22: ...n phase is carried out Central heating antifreeze request When the temperature read by the central heating delivery probe B1 drops below 4 C the board enables ignition and keeps the boiler going with the burner at minimum power until a boiler temperature of 42 C is reached radiator antifreeze Domestic hot water antifreeze request If the temperature read by the d h w probe B2 drops be low 8 C the i...

Страница 23: ...s the board to increase current to the modulation coil Y2 after having limited it during the ignition phase It keeps the gas valve Y1 open Flame detection E2 It indicates an ongoing d h w request After domestic hot water has been drawn it enables boiler opera tion in the domestic hot water mode which is given priority over the system central heating mode D h w ﬂow switch S4 Closed d h w request It...

Страница 24: ...g that the main gas valve Y1 coils are supplied Gas valve power supply Y1 230 Vac coils supplied 0 Vac coils not supplied It is a high voltage signal higher than 16 kV that determines an electrical discharge at the end of the ignition electrode located on the burner Ignition electrode E1 The boiler circulator M1 is turned on for 30 seconds after 24 hours of inactivity with the boiler in the SUMMER...

Страница 25: ...hed keeping the fan working for 30 seconds Sealed chamber post ventilation To prevent the water gas exchanger from overheating if the boiler temperature detected by the NTC delivery probe B1 exceeds 90 C the fan is switched on until the temperature drops below 85 C Delivery overtemperature ventilation If the ﬂue pressure switch contact opens while the fan is working the boiler stops If normal cond...

Страница 26: ...ﬂame Display powered Boiler in the central heating mode Symbol 11 on Boiler in the d h w mode Symbol 8 on Burner on Symbol 15 on Ongoing chimneysweep function Symbols 8 and 11 ﬂashing simultaneously Digital user interface The appliance is adjusted and controlled burner ignition temperature setting ﬂame modulation and diagnostics by a microprocessor controlled p c b that can be used by means of a d...

Страница 27: ...ectromechanical contacts 04 Red 04 NTC delivery probe malfunction 05 Orange 05 NTC d h w probe malfunction 06 Orange 06 Insuﬃcient system pressure 10 Orange 10 Flue pressure switch failure 11 Orange 11 Parasite ﬂame 20 Red 20 Insuﬃcient circulation 27 Orange 27 D H W anti leak circuit 28 Orange 28 CRD order anomaly or not compatible 31 Orange 31 press push buttons 1 and 2 simultaneously for about ...

Страница 28: ...inter phase and 1 5 seconds in the Summer phase to reduce the formation of scale Activating post d h w circulation Range of settable values Parameter on Standard setting oF P4 Central heating power The EOLO Star 23 kW boiler featu res electronic modulation that adapts boiler power to the real heat requirements of the home So the boiler works normally in a variable range of gas pressures going from...

Страница 29: ...equest Flue pressure switch contact control The 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 The 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 high...

Страница 30: ...ter capacity Head available with ﬂowrate 1000 h Hot water production available heat output Domestic hot water adjustable temperature Domestic circuit ﬂow limiter Flow limiter rated delivery min pressure Domestic circuit min pressure dynamic Domestic circuit max working pressure Min drawing domestic hot water Drawing capacity in continuous duty T 30 C Speciﬁc capacity T 30 C Weight of boiler full W...

Страница 31: ...0 6 19 8 17000 2 22 9 19 93 8 1 65 21 40 218 3 1 63 28 19 287 6 18 6 16000 2 10 8 40 85 7 1 56 19 68 200 8 1 54 26 01 265 3 17 4 15000 1 97 7 63 77 8 1 47 18 03 183 9 1 45 23 89 243 7 16 3 14000 1 85 6 88 70 1 1 38 16 45 167 8 1 36 21 84 222 7 15 1 13000 1 73 6 14 62 6 1 29 14 93 152 3 1 27 19 84 202 4 14 0 12000 1 60 5 42 55 3 1 19 13 47 137 4 1 18 17 90 182 6 12 8 11000 1 48 4 72 48 1 1 10 12 07...

Страница 32: ...http serviceimmergas ro ...

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