Immergas EOLO Eco 24 kW Скачать руководство пользователя

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STEEkW ed 12/03 EOLO Eco kW

Technical Documentation

Flue pressure switch contact control

e integrated board checks switching of the flue pressure switch contact resulting from fan operation

(NO contact)

Flue pressure switch contact control

e integrated board checks the correct position of the flue pressure switch

(NC contact)

EOLO Eco kW operating sequence.
Central heating phase Domestic hot water phase

Power on

Main selector switch on WINTER

Integrated board operation enabled

Closing of the main selector switch contacts

(WINTER position)

enables operation in the central heating phase

Powering the circulator and 3-way diverter valve

e integrated board powers the boiler circulator and the electric

3-way diverter valve, the valve is moved into the heating position

Power on

Main selector switch on SUMMER or WINTER

Closing of the d.h.w. flow switch

Running of domestic hot water

System pressure micro switch closes

e pressure in the primary circuit higher than the minimum cut-off value, causes the system pressure switch contact to close

Gas valve coils powered

Enabled by the overheating safety thermostat, the integrated board powers the gas valve coils

Burner ignition (automatic slow ignition)

e 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

ò ò

Integrated board operation enabled

Closing of the main selector switch contacts

(SUMMER position)

enables operation in the domestic hot water phase

Closing of the Room thermostat switch / CAR operation

request

Request of the room thermostat or CAR

(if mounted)

detects

conditions that require operation in the central heating phase

Ignition electrodes powered

e integrated board powers the ignition electrodes

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

Powering the circulator and 3-way diverter valve

e integrated board powers the boiler circulator and the electric

3-way diverter valve, the valve is moved into the d.h.w. position

Fan powered

e integrated board powers the fan

Содержание EOLO Eco 24 kW

Страница 1: ...ce can be connected to the Amico Remote Control e boiler features a standard antifreeze safety device that protects it against temperatures as low as 5 C optional as low as 15 C e hydraulic circuit features a copper water gas exchanger as well as a new hydraulic unit in a compound material Besides the pump and 3 way electric diverter valve that depending on needs lets boiler water circulate in the...

Страница 2: ...alfunction 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 3: ... chamber 8 Sealed chamber 9 Fan 10 Intake traps air A flues F 11 Positive signal pressure point 12 Negative signal pressure point 13 Flue pressure switch 14 Draught diverter 15 Delivery probe 16 Overheating safety thermostat 17 Primary exchanger 18 System expansion vessel 19 Automatic air vent 20 Circulator 21 ree way valve motorized 22 System pressure switch 23 Safety valve 3 bar 24 System draina...

Страница 4: ...robe 3 D H 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 probe 12 Overheating safety thermostat 13 System expansion vessel 14 Automatic air vent 15 Circulator 16 ree 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 Flo...

Страница 5: ...he system with a higher or a smaller head e characteristic curves are shown in the following graphs Head kPa Flow rate Litres h A A 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 sp...

Страница 6: ... 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 central heating po...

Страница 7: ...ects 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 the hy draul...

Страница 8: ...exchanger inside which the domestic cold water absorbs the heat contained in the primary circuit water see d h w exchanger is means that the central heating function is off in this phase the production of domestic hot water having priority e 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 body 2 e part ...

Страница 9: ...he water flows it enables the integrated board 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 24 kW version and 9 0 l min 28 kW version D h w exchanger is is a water water exchanger consisting of stainless steel plates placed on top of each other 16...

Страница 10: ...ectrically connected in parallel and energised by mains power through a special connector 2 Modulation coil 1 is 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 4 e burner consists of two rows of 12 24 kW version and 14 28 kW version...

Страница 11: ...er after 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 ...

Страница 12: ...n be sampled Flue pressure switch signal pressure points 9 10 e 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 e negative pressure point 9 is connected to a Y shaped pipe 11 which in turn is connected to the negative pressure point of the flue pressure switch 6 and...

Страница 13: ...ially with that of the burner Air inlet and exhaust systems see air inlet and exhaust terminal instructions EOLO Eco kW is connected to the push fitting air inlet exhaust pipes and can be installed either with a fan assisted sealed chamber type C configuration or by means of the relative kit the fan assisted open chamber configuration type B22 Fan assisted open chamber configuration type B22 for i...

Страница 14: ...n the first case the passage for the air inlet of combustion air 5 is closed while in the second case it is used e flue shutter 7 is mounted on the exhaust fitting 4 which has to be adjusted to ensure correct boiler operation e appropriate adjustment depends on the type of pipe used and its length see boiler instruction handbook To adjust unscrew the front stop screw and move the gradu ated indica...

Страница 15: ... ignition of the burner by whose flame it is covered It is connected to the integrated board Detection electrode E2 ey interrupt power to the circuit when power input is over 3 15 A ey 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 diver...

Страница 16: ...s Zone 1 is controlled times and temperatures 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 ...

Страница 17: ...er keeps working in d h w mode It is mounted on the d h w outlet body connected to the d h w plate exchanger D h w NTC probe B2 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 integrated board and enables boiler operation when the flue are extracted correctly I...

Страница 18: ...ontrol panel with the central heating temperature trimmer the integrated board energizes the K2 request relay which closes the 2 contacts allowing to start of the ignition cycle first controlling the ignition electrode 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 with the remote control e remote control ...

Страница 19: ...orking 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 value with the enable of the safety thermostat E4 and consequent switch...

Страница 20: ...h 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 the flue pressure switch to NO S6 the board provide to supply the coil of K2 request relay If the temperature measured by the delivery probe B1 is be low the temperature set on the control panel with the central heating tempe...

Страница 21: ...ntral heating delivery probe B1 drops below 4 C the board enables ignition and keeps the generator working with the burner at minimum output until a 42 C boiler temperature is reached radiator antifreeze Domestic hot water anti freeze request When the temperature perceived by the d h w probe B2 drops below 8 C the electronic board allows the supply of the boiler circulator and the three way valve ...

Страница 22: ...tor that varies in a proportionate way to the external temperature It enables to change the system delivery temperature in accordance with external temperature External probe B4 optional PTC probe 1 kohm 25 C It indicates which request is ongoing d h w or central heating After domestic hot water has been run it enables operation of the boiler in the domestic hot water phase which is given priority...

Страница 23: ...ed and the 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 is is a unipolar relay that controls the fan M20 that is excited when its operation is requested Fan relay K4 Wi...

Страница 24: ... down and the function is inhibited for at least one hour you gain one attempt each hour up to a maximum of 5 attempts To restore boiler operation turn the main selector switch R10 round to the Reset position and then make either a domestic hot water or central heating request Failed ignition lock If the overheating safety thermostat contact opens boiler operation is blocked To restore boiler oper...

Страница 25: ...a flame LED 1 ON Burner on LED 2 ON On going chimneysweep function LED 3 and 4 flashing simultaneously E07 Malfunction faulty indications LED flashing Remote display CAR offline malfunction not compatible or RS232 offline LED 3 and 4 flashing alternately E31 Ignition lock LED 5 E01 Flue pressure switch safety LED 6 E11 Low system pressure LED 7 E10 Absence of circulation LED 8 E27 NTC delivery pro...

Страница 26: ... 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 e value is indicated by the slow flashing of one of the LEDs 2 to 11 together with the flashing of LED 1 e value is selected by turning the ce...

Страница 27: ...ote control requests e 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 LED 4 17...

Страница 28: ...tion Relay 1 operation switching free contacts LED flashing slow Off Standard setting LED 2 Main zone command 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...

Страница 29: ...ue causes the system pressure switch contact to close ò ò ò Gas valve coils powered Enabled by the overheating safety thermostat the integrated board powers the gas valve coils ò Burner ignition automatic slow ignition e 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 ò ò ò ò ò...

Страница 30: ...erature D h w flow limiting device at 2 bar Minimum pressure of the limiting device at the nominal flow rate 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 bar l min l min l...

Страница 31: ...rature 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 Minimum pressure of the limiting device at the nominal flow rate D h w circuit min dynami...

Страница 32: ...1 43 3 2 33 1 05 9 88 101 11 6 10000 1 36 2 9 30 1 00 9 01 92 11 0 9500 1 30 2 6 26 0 95 8 18 83 10 5 9000 1 23 2 3 23 0 91 7 38 75 9 3 8000 1 10 1 7 17 0 81 5 88 60 NATURAL GAS G20 PROPANE G31 HEAT OUTPUT HEAT OUTPUT GAS FLOW RATE BURNER NOZZLE PRESS BURNER GAS FLOW RATE BURNER NOZZLE PRESS BURNER kW kcal h m3 h mbar mm H2 O kg h mbar mm H2 O 28 0 24080 3 19 12 81 131 2 34 36 62 374 27 9 24000 3 ...

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