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EOLO Maior kW

Instantaneous wall-hung

boilers with sealed-room

LO Maior kW

LO Maior kW X

EOLO Maior kW X

Wall-hung boilers with sealed-

room for central heating only

or with external storage tank

Содержание EOLO Maior kW

Страница 1: ...EOLO Maior kW Instantaneous wall hung boilers with sealed room EOLO Maior kW EOLO Maior kW X EOLO Maior kW X Wall hung boilers with sealed room for central heating only or with external storage tank ...

Страница 2: ......

Страница 3: ...ocessor with continuous 2 sensor ﬂame modulation d h w and central heating Thanks to which the appliance can be connected to the Amico Remote Control The boiler features a standard antifreeze safety device that protects it against temperatures as low as 5 C optional as low as 15 C The hydraulic circuit features a copper water gas exchanger as well as a new hydraulic unit in a compound material Bes...

Страница 4: ...oiler is available with a power of 28 kW 24 080 kcal h The regulation and the control functions are managed by an electronic control board microprocessor drive Thanks to which the appliance can be connected to the Amico Remote Control The boiler features a standard antifreeze safety device that protects it against temperatures as low as 5 C optional as low as 15 C The hydraulic circuit features a ...

Страница 5: ...op malfunction 6 Temperature LED Flue pressure switch malfunction 7 Temperature LED System pressure insuﬃcient malfunction 8 Temperature LED Circulation insuﬃcient malfunction 9 Temperature LED Delivery probe faulty 10 Temperature LED Domestic hot water probe faulty 11 Temperature LED Overheating lock 12 Stand by D h w Remote Control CAR D h w and Heating Reset selector switch 13 D h w temperature...

Страница 6: ...nsuﬃcient malfunction 8 Temperature LED Circulation insuﬃcient malfunction 9 Temperature LED Delivery probe faulty 10 Temperature LED Domestic hot water probe faulty optional 11 Temperature LED Overheating lock 12 Stand by D h w Remote Control CAR D h w and Heating Reset selector switch 13 D h w temperature knob optional 14 Central heating temperature knob 15 Boiler manometer Legend G Gas supply R...

Страница 7: ...Fan 9 Intakes air A ﬂues F 10 Positive signal pressure point 11 Negative signal pressure point 12 Flue pressure switch 13 Delivery NTC probe 14 Overheating Safety thermostat 15 Draught diverter 16 Primary exchanger 17 System expansion vessel 18 Ignition and detection electrodes 19 Automatic air vent 20 Circulator 21 System pressure switch 22 3 bar safety valve 23 Three way valve motorized 24 Syste...

Страница 8: ...F 7 Positive signal pressure point 8 Negative signal pressure point 9 Flue pressure switch 10 Delivery NTC probe 11 Overheating Safety thermostat 12 Draught diverter 13 Primary exchanger 14 Ignition and detection electrodes 15 System expansion vessel 16 Automatic air vent 17 Circulator 18 System pressure switch 19 3 bar safety valve 20 Three way valve plug 21 System draining cock 22 System ﬁlling ...

Страница 9: ... W heat exchanger 4 Gas valve 5 Burner 6 Primary exchanger 7 Draught diverter 8 Fan 9 Sealed chamber 10 Flue pressure switch 11 Delivery NTC probe 12 Overheating Safety thermostat 13 System expansion vessel 14 Automatic air vent 15 Circulator 16 Three way valve motorized 17 System draining cock 18 System ﬁlling valve 19 Adjustable by pass 20 System pressure switch 21 3 bar safety valve 22 One way ...

Страница 10: ...e 9 Overheating Safety thermostat 10 System expansion vessel 11 Automatic air vent 12 Circulator 13 System draining cock 14 Three way valve without motor 15 Adjustable by pass 16 System pressure switch 17 3 bar safety valve 18 System ﬁlling valve G Gas supply RR System ﬁlling R System return M System delivery The primary circuit with relevant control and safety devices is triggered each time there...

Страница 11: ...Head available to the system on maximum speed with the by pass oﬀ adjustment screw fully tightened B Head available to the system on maximum speed screw tightened 1 5 turns compared to the adjustment screw completely loose C Head available to the system on maximum speed with the by pass open adjustment screw completely loose Head m H 2 O EOLO Maior 24 kW Head kPa Flow rate Litres h Head m H 2 O EO...

Страница 12: ...heating delivery NTC probe 2 and the overheating safety thermostat 3 are located on the exchanger s outlet delivery The four pipes it is made of are connected in series 4 It is connected to the pump delivery and primary circuit deli very by means of pipes with threaded ﬁttings 1 3 4 2 Delivery Return A Head available to the system on maximum speed with the by pass oﬀ adjustment screw fully tighten...

Страница 13: ...aulic part of the boiler consists of a unit made in a composite material 2 that also includes the circulator and it is operated by a motor 1 which causes it to move as required Operation When the central heating or domestic hot water position has to be reached the motor 1 is switched on by the integrated board Each time the motor turns of 180 it causes the shutter 5 to move and it compresses centr...

Страница 14: ...is switch detects the pressure inside the primary circuit It is housed in the delivery manifold unit 1 and coupled to a microswitch that prevents the burner working when the pres sure measured is below 0 3 bar It prevents the primary exchanger overheating Automatic air vent 6 It automatically expels any gaseous substances from the boiler circuit It is mounted on the circulator delivery directly on...

Страница 15: ...The shutter 5 switching in both the positions is realized by supplying the optional electric motor 1 The hydraulic part of the boiler consist of a unit made in a composite material 2 that also includes the circulating pump and it is operated by a motor 1 optional that causes it to move as required Before ﬁtting the motor it is necessary to remove the cap 6 locked with the respective fork Heating o...

Страница 16: ...5 This switch detects the pressure inside the primary circuit It is housed in the delivery manifold unit 1 and coupled to a microswitch that prevents the burner working when the pres sure measured is below 0 3 bar It prevents the primary exchanger overheating Automatic air vent 6 It automatically expels any gaseous substances from the boiler circuit It is mounted on the circulator delivery directl...

Страница 17: ... the plate exchanger inside which the domestic cold water absorbs the heat contained in the primary circuit water see d h w exchanger This means that the central heating function is oﬀ in this phase the production of domestic hot water having priority The water water heat exchange takes place inside the d h w exchanger 3 which is ﬁxed with screws to the d h w outlet body 1 and to the d h w inlet b...

Страница 18: ...to start the domestic hot water priority functioning phase It is ﬁxed with a pin to the valve supporting plate A ﬂow limiting device 2 is mounted on the outlet of the d h w ﬂow switch 7 55 l min 2 bar for model 24 kW 9 0 l min 2 bar for model 28 kW and a 11 28 l min 2 bar for model 32 kW D h w exchanger This is a water water exchanger consisting of stainless steel plates placed on top of each othe...

Страница 19: ...y the integrated board when the burner has to be ignited They are electrically connected in parallel and energised by mains power through a special connector 2 Modulation coil 1 This low voltage coil is controlled by the integrated board It controls the gas valve stabiliser and is used to change the outlet pressure in a way proportionate to the dc current that runs through it Gas circuit Burner Th...

Страница 20: ...er having set its tempera ture selector on maximum Turn the brass nut 3 clockwise to increase pressure to the burner and counter clockwise to reduce it Adjustment minimum pressure to be done after the adjustment maximum pressure After having cut electrical power to the modulation coil turn the screw 2 clockwise to increase pressure to the burner and anticlockwise to reduce it Gas conversion There ...

Страница 21: ...d Flue pressure switch signal pressure points 9 10 The top outer part of the sealed chamber features two pressure points with screw closing by means of which it is possible to measure the signal on the ends of the ﬂue pressure switch 6 Only for 24 kW model Up to serial number 2738489 for EOLO Maior 24 kW The negative pressure point 9 is connected to a Y shaped pipe 11 which in turn is connected to...

Страница 22: ...ve points the diﬀerence in pressure between the outlet of the Venturi pipe inserted in the fan exhaust negative signal and the inside of the sealed chamber positive signal The signal measured by the pressure switch is variable accord ing to the length of the air inlet exhaust terminals and can be measured by the relative pressure points located at the top of the sealed chamber 9 10 When it trigger...

Страница 23: ...the top of the draught diverter 4 from where it extracts the ﬂue and conveys them to the exhaust pipes to which the boiler is connected It simultaneou sly guarantees the ﬂow of air inside the sealed chamber It is controlled by the integrated board and its operation coin cides essentially with that of the burner N B Only for 24 and 28 kW models Up to serial number 2738489 for EOLO Maior 24 kW Up to...

Страница 24: ...rough holes present on the external surface of the ﬂange 2 The ﬂange must be mounted on the central hole in the upper side of the sealed chamber after inserting the respective gasket 1 and ﬁxing it through the 4 screws On the ﬂange 2 it is necessary to install the cover cap Ø180 3 through the two self tapping screws combining the two holes present on the cover cap and on the ﬂange Exhaust The conn...

Страница 25: ... that can be positioned in any direction and which by means of the adapter 60 100 80 125 3 and necessary extensions must be connected to the special extraction and exhaust end 4 Max possible overall length beyond the ﬁrst curve 2 is 7 3 straight and horizontal metres 1 2 6 4 3 5 1 2 3 5 4 6 7 Fan assisted sealed chamber conﬁguration type C Exhaust Connection to the exhaust pipes is by means of a ﬂ...

Страница 26: ...ace can be created by means of a Ø 125 mm external concentric pipe Max possible length extraction exhaust is 33 straight metres To prevent condensation problems the exhaust pipe should not be more than 12 m long 5 4 1 3 2 5 6 7 8 8 10 11 9 A B Coupling type vertical concentric kit 80 125 The exhaust pipe Ø 80 mm is ﬁtted inside the extraction pipe Ø 125 mm Connection to the boiler is made using a ...

Страница 27: ...me it is covered It is connected to the integrated board Detection electrode E2 They interrupt power to the circuit when power input is over 3 15 A They are ﬁtted on the integrated board Line fuse F1 Neutral fuse F2 Fuse 3 15 AF 250 V E2 Detection electrode E4 Overheating safety thermostat F1 Line fuse F2 Neutral fuse M1 Circulator M20 Fan M30 Moterized 3 way diverter valve P1 Central heating time...

Страница 28: ...res by the CAR Zone control unit CZ external optional It permits the remote control of the generator SUMMER WINTER switch temperature setting and indication alarms display reset etc and acts as a weekly timer thermostat Remote Control CAR optional See Remote Con trol operation CAR See zone control unit operation After running domestic hot water it acts on the integrated board that starts the d h w...

Страница 29: ... to the d h w plate exchanger For kW X models It is inserted inside a bulb holder in contact with the external wall of the separate storage tank eventually con nected D h w NTC probe B2 optional kW X version NTC probe 10 kohm 25 C It is powered by the integrated board with a variable d c With this the pressure of the gas to the burner can be varied Gas valve modulator Y2 Loads It acts on the integ...

Страница 30: ...B1 is below the temperature set on the control panel with the central heating temperature trimmer the integrated board energizes the K2 request relay which closes the 2 contacts al lowing to start of the ignition cycle ﬁrst controlling the ignition electrodes E1 and then both the gas valve coils Y1 Burner ignition is detected by the integrated board by way of the ionisation electrode E2 Operating ...

Страница 31: ... powers the motor M of the 3 way diverter valve M30 that continues working until limit switch 3 opens when the d h w position is reached 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 contact of the system pressure switch S5 is closed the pressure measured in the primary circuit is higher than the mini mum valu...

Страница 32: ...h 1 opens when the central heating position is reached 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 contact of the system pressure switch S5 is closed the pressure measured in the primary circuit is higher than the mi nimum value with the enable of the safety thermostat E4 and the consequent switching over of...

Страница 33: ...ximum power set on the gas valve Subsequently ﬂame modulation occurs with reference to the diﬀerence between the temperature set with the d h w temperature trimmer R5 and that measured with the d h w probe B2 When the temperature measured by the d h w probe B2 exceeds the value requested the K2 relay contact opens burner switches oﬀ followed by the contacts of the K4 fan and K3 circulator relays a...

Страница 34: ...ernal temperature External probe B4 optional PTC probe 1 kohm 25 C It indicates that a d h w request is ongoing After domestic hot water has been run it enables operation of the boiler in the domestic hot water phase which is given priority with respect to the system central heating phase D h w ﬂow switch S4 for combi versions only Closed d h w request It is a resistor inversely proportionate to t...

Страница 35: ...temperature measured by the external probe if installed Remote control CAR optional see CAR operation Adjustments Gas type selector switch Natural gas LPG S8 Depending on the position Natural gas LPG it adapts the modulating parameters to the type of gas the boiler is set for This is a unipolar relay that controls the fan M20 that is excited when its operation is requested Fan relay K4 With this r...

Страница 36: ...ction electrode E2 has not detected the ﬂame on the burner boiler operation is stopped The integrated board eﬀects 2 ignition attempts lasting 10 seconds with a 30 second interval in between after which it shuts down To start the boiler again turn the main selector switch R10 round to Reset followed by either a d h w or central heating request Note The malfunction can be reset up to 5 consecutive ...

Страница 37: ...xceeds 90 C the fan is switched on until the temperature drops below 85 C Delivery overheating ventilation To prevent the water gas exchanger from overheating at the end of each central heating an tifreeze or chimneysweep request the circulator M1 keeps working for 150 seconds Post circulation pump Breakage of the central heating delivery probe B1 stops boiler operation Breakage of the delivery NT...

Страница 38: ... 4 on ﬁxed Operating malfunction signalled LED ﬂashing Remote display CAR oﬄine malfunction not compatible or RS232 oﬄine LED 3 and 4 ﬂashing alter nately E31 No ignition block LED 5 E01 Flue pressure switch failure LED 6 E11 Insuﬃcient system pressure LED 7 E10 Insuﬃcient circulation LED 8 E27 Delivery NTC probe malfunction LED 9 E05 D h w NTC probe malfunction LED 10 E06 Overheating safety therm...

Страница 39: ...by temporarily turning the main selector switch round to RESET until the LED relative to the parameter switches oﬀ and then release it When the ok has been given for the selection go to the second level where the value of the parameter selected can be set The value is indicated by the slow ﬂashing of one of the LEDs 2 to 11 together with the ﬂashing of LED 1 The value is selected by turning the ce...

Страница 40: ...r Remote control requests The boiler is set to turn on im mediately after a request In the case of particular systems i e zone systems with mo torised thermostat valves etc it might be necessary to delay ignition Central heating ignitions delayed due to Room thermostat or Remote control reque sts continuous variation LED ﬂashing slow 0 seconds Standard setting LED 2 57 seconds LED 3 113 seconds LE...

Страница 41: ...ration Relay 1 operation switching free contacts LED ﬂashing slow Oﬀ LED 2 Main zone command Standard setting LED 3 General alarm LED 6 Central heating phase on LED 7 External gas valve powered LED 8 Relay 2 operation Relay 2 operation single contacts energised with SELV contact in series LED ﬂashing slow Oﬀ Standard setting LED 2 Remote ﬁlling LED 4 General alarm LED 6 Central heating phase on LE...

Страница 42: ... causes the system pressure switch contact to close Ú Ú Ú Gas valve coils powered Enabled by the overheating safety thermostat the integrated board powers the gas valve coils Ú Burner ignition automatic slow ignition The integrated board sends the slow ignition current to the modulation coil Flame detection By means of the ionisation electrode the integrated board detects burner ignition Ú Ú Ú Ú Ú...

Страница 43: ...ater D h w adjustable temperature D h w ﬂow limiting device at 2 bar D h w circuit min dynamic pressure D h w circuit maximum operating pressure Minimum domestic hot water run oﬀ Speciﬁc ﬂow rate T 30 C Speciﬁc ﬂow rate in continuous duty T 30 C Full boiler weight Empty boiler weight bar C C l bar l kPa m H2 O kW kcal h C l min bar bar l min l min l min kg kg 3 90 35 85 7 4 1 0 0 6 35 30 3 6 24 0 ...

Страница 44: ... circuit Max operating temperature of heating circuit Adjustable heating temperature Total volume of heating expansion vessel Expansion vessel preloading Generator water content Available head with a ﬂow rate of 1000 l h Working heat output for the production of hot water D h w adjustable temperature D h w ﬂow limiting device at 2 bar D h w circuit min dynamic pressure D h w circuit maximum operat...

Страница 45: ...rcuit Max operating temperature of heating circuit Adjustable heating temperature Total volume of heating expansion vessel Expansion vessel preloading Generator water content Available head with a ﬂow rate of 1000 l h Working heat output for the production of hot water D h w adjustable temperature D h w ﬂow limiting device at 2 bar D h w circuit min dynamic pressure D h w circuit maximum operating...

Страница 46: ...ating temperature Total volume of heating expansion vessel Expansion vessel preloading Generator water content Available head with a ﬂow rate of 1000 l h Speciﬁc ﬂow rate S T U 80 litres T 30 C Speciﬁc ﬂow rate S T U 105 litres T 30 C Speciﬁc ﬂow rate S T U 120 litres T 30 C Speciﬁc ﬂow rate S T U 200 litres T 30 C Speciﬁc ﬂow rate in continuous duty with S T U T 30 C Full boiler weight Empty boil...

Страница 47: ... 1 21 12 88 131 4 13 4 11500 1 59 4 17 42 5 1 18 9 31 95 0 1 17 11 97 122 1 11 0 9500 1 33 2 97 30 2 0 99 7 16 73 0 0 98 8 83 90 0 9 3 8000 1 13 2 20 22 4 0 84 6 00 61 2 0 83 7 00 71 4 NATURAL GAS G20 BUTANE G30 PROPANE G31 HEAT OUTPUT HEAT OUTPUT GAS FLOWRATE BURNER NOZZLE PRESSURE BURNER GAS FLOWRATE BURNER NOZZLE PRESSURE BURNER GAS FLOWRATE BURNER NOZZLE PRESSURE BURNER kW kcal h m3 h mbar mm ...

Страница 48: ... 26 7 23000 3 08 8 50 86 7 2 29 20 01 204 1 2 26 25 45 259 6 25 6 22000 2 95 7 76 79 2 2 20 18 42 187 9 2 17 23 41 238 8 24 4 21000 2 83 7 07 72 1 2 11 16 91 172 4 2 08 21 48 219 1 23 3 20000 2 71 6 41 65 4 2 02 15 46 157 7 1 99 19 64 200 3 22 1 19000 2 58 5 79 59 0 1 93 14 09 143 7 1 90 17 89 182 5 20 9 18000 2 46 5 21 53 1 1 83 12 79 130 5 1 81 16 23 165 6 19 8 17000 2 34 4 66 47 6 1 74 11 55 11...

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