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  4. Domina Oasi F 24 E
  5. Technical Manual

Ferroli Domina Oasi F 24 E Technical Manual - Domina Oasi F 24 E Version

Summary of Domina Oasi F 24 E

  • Page 1

    Domin a o asi f 24-30 e ferella boil f 24-30 mel kea air comp a ct e wall-mounting gas boiler airtight chamber, for heating and hot water with integrated boiler technical manual • • edition 09•2002.

  • Page 2

    2 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 1. Technical characteristics and data ........................................................... 3 1.1 introduction .................................................................................................

  • Page 3: And Data

    3 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 1. General technical characteristics and data 1.1 introduction our appliance is a high-efficiency heat generator for central heating and hot-water production running on natural gas or lpg (configurable at the ti...

  • Page 4: Domina Oasi F 24 E Version

    4 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 1.2 dimensions and connections domina oasi f 24 e version 600 370 800 810 570 85 285 75 85 90 85 80 80 85 120 55 170 100 65 55 35 1 2 3 4 5 6 key 1 gas inlet 2 3/4" system delivery 3 3/4" system return 4 1/2” ho...

  • Page 5: & Kea Air Compact E Version

    5 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 ferella boil f 24 mel version & kea air compact e version 600 370 800 810 570 85 285 75 85 90 85 80 80 85 120 55 170 100 65 55 35 1 2 3 4 5 6 key 1 gas inlet 2 3/4" system delivery 3 3/4" system return 4 1/2” ho...

  • Page 6: Domina Oasi F 30 E Version

    6 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 domina oasi f 30 e version 600 450 800 810 570 85 365 75 85 90 85 80 80 85 120 55 170 100 65 55 35 1 2 3 4 5 6 key 1 gas inlet 2 3/4" system delivery 3 3/4" system return 4 1/2” hot tap water 5 1/2” cold tap wat...

  • Page 7

    7 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 ferella boil f 30 mel version 600 450 800 810 570 85 365 75 85 90 85 80 80 85 120 55 170 100 65 55 35 1 2 3 4 5 6 key 1 gas inlet 2 3/4" system delivery 3 3/4" system return 4 1/2” hot tap water 5 1/2” cold tap ...

  • Page 8: F 24 E/mel Version

    8 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 key 5 airtight chamber 7 gas inlet 8 tap water outlet 9 tap water inlet 10 system delivery 11 system return 14a 3-bar safety valve (heating) 14b 7-bar safety valve (boiler) 16 fan 19 combustion chamber 20 burner...

  • Page 9: F 30 E/mel Version

    9 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 f 30 e/mel version 145 0 5 1 2 3 4 6 179 16 43 56 36 29 187 28 91 90 27 50 49 19 81 82 26 22 20 5 21 114 44 85 84 130 7 14a 10 11 32 180 34 40 155 132 98 63 157 9 74 8 14b 97 192 151a 151b domina oasi - ferella ...

  • Page 10: 1.4 Technical Data Table

    10 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 1.4 technical data table gas supply pmax pmin heating power (net heat value - hi) useful heating power 80˚c - 60˚c hot water heating power powers pmax pmin kcal/h 20,200 8,300 kw 23.5 9.7 kcal/h 20,200 8,300 kw...

  • Page 11: Components

    11 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 2. Product framework and internal components 2.1 hydraulic circuit – heating hydraulic diagram for heating when there is a call for heat, the room thermostat or control system make the burners ignite and the ci...

  • Page 12

    12 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 circulator (230v/50hz) located on the heating circuit return, it is connected directly to the exchanger via special forks and connected to the system via a threaded brass fitting. It has three delivery/head lev...

  • Page 13

    13 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 expansion tank it is connected via a pipe with a threaded connection close to the air separator. For the 24kw version, it is above the boiler and for the 30kw version, it is in front of the boiler, inside the f...

  • Page 14

    14 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 drain cock this is located upstream from the tap-water pump and has the function of draining the system. Safety valve it opens if the pressure exceeds 3 bars, making boiler operation safer and protecting it aga...

  • Page 15

    15 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 2.2 hydraulic circuit – tap water hydraulic diagram for tap water 20 82 5 29-187 16 - + 44 7 81 43 32 14 114 34 11 10 49 50 222 36 97 155 130 179 179 74 8 9 192 151 56 the tap water is supplied via an integrate...

  • Page 16

    16 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 boiler the boiler is made of stainless steel and may be of 55 litres (24 kw) or 65 litres (30 kw). It contains a coil (aisi 316) whose purpose is to transfer the heat from the primary circuit to the tap-water c...

  • Page 17: 2.3 Gas Circuit

    17 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 20 82 5 29-187 16 - + 44 7 81 43 32 14 114 34 11 10 49 50 222 36 97 155 130 179 179 74 8 9 192 151 56 2.3 gas circuit gas circuit diagram key 5 airtight chamber 7 gas inlet 8 tap water outlet 9 tap water inlet ...

  • Page 18

    18 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 in out common 25–50v dc 80–110v dc b gas valve it supplies gas to the nozzles between a minimum and maximum pressure. For the valve to work correctly, it is necessary for the pressure upstream from it to be sta...

  • Page 19

    19 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 adjusting burner pressure since this unit has flame modulation, there are two fixed pressure settings: the minimum and maximum, which must be as stated in the technical data chart according to the type of gas. ...

  • Page 20

    20 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 gas supply conversion the unit can function with either natural gas or lpg and is factory-set for use with one of the two gases, as clearly shown on the packing and on the unit's dataplate. Whenever a different...

  • Page 21: 2.4 Burner Unit

    21 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 2.4 burner unit operation the burner unit comprises a manifold and 12/16 nozzles (depending on the capacity), the burner mount, electrodes and the burner assembly. Manifold - nozzles the valve sends gas at a su...

  • Page 22

    22 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 burner assembly the burner assembly is composed of 12 or 16 burner stages. Each stage is composed of two pressed steel half bearings, with a suitably cut stainless steel head. Gas enters at the bottom of the st...

  • Page 23: 2.5 Fume Circuit

    23 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 2.5 fume circuit fume deflector and manifold all forced-flow boilers have a fume deflector above the exchanger whose main task is to make the secondary air crossing the burners uniform, making the flame homogen...

  • Page 24

    24 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 c nc no pressure gauge p a key no = normally open nc = closed c = common air pressure switch this is used to check whether the fumes are adequately evacuated. The pressure switch compares the static and dynamic...

  • Page 25

    25 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 fume ducts the unit is “type c” with an airtight chamber and forced draught, the air inlet and fume outlet must be connected to one of the following extraction/suction systems. With the aid of the tables and me...

  • Page 26

    26 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 calculation example here we give an example of the calculation for a separate fume outlet. We recommend inserting a condensate trap on long vertical sections to prevent condensation getting onto the burner and ...

  • Page 27: 2.6 Electrical Circuit

    27 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 2.6 electrical circuit electrical terminal board follow the instructions given in the figure to access the electrical connection terminal board. The layout of the terminals for the various connections is given ...

  • Page 28

    28 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 safety thermostat x6 - 5/6 has a thermostat with gold contacts that opens if the temperature exceeds 100°c. Connected directly to the ignition and main card, when it opens it cuts off the power supply to the va...

  • Page 29

    29 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 heating and tap water temperature probe these are ntc sensors that increase their resistance as the temperature decreases and are connected directly to the main card x4 - 24v (heating 12-13, tap water 10-11). T...

  • Page 30: 3. Operation

    30 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 3. Operation 3.1 operating principle when there is a call for heating, the circulator and fan start working; then the air pressure switch enables the control and safety unit to ignite the burner. Via the electr...

  • Page 31: 3.2 Operating Diagram

    31 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 3.2 operating diagram • hot water taps closed • boiler satisfied • system pressure > 0.8 bar: led 5 not blinking • room thermostat, heating potentiometer on call: led 4 on • heating circulator comes on • heatin...

  • Page 32: 3.3 Control Panel

    32 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 3.3 control panel item description a off/on/reset switch b heating temperature setting c hot water temperature setting d water gauge 0 5 1 2 3 4 6 d a c b standby for heating (blinking light) heating required (...

  • Page 33

    33 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 3.5 operating parameter adjustment boiler parameter adjustment p1 temperature adjustment potentiometer. Controls the heating delivery temperature from 30°c to 85°c. The minimum position selects “summer” operati...

  • Page 34: 4. Troubleshooting

    34 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 4. Troubleshooting flow diagram 1 checking electric power supply - system pressure and antifreeze protection is led5 on? Turn the selector onto on heating selector on summer position " " set the temperature of ...

  • Page 35

    35 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 flow diagram 2 checking hot water operation flow diagram 3 checking heating operation wait for 2 minutes set the hot water temperature to minimun set the temperature for heating to maximum make sure the room th...

  • Page 36

    36 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 flow diagram 4 checking fan/fume circuit does the fan turn? Is the relay ry02 closed? Proceed with diagrams 2-3 no are there 230v at the fan terminals? Yes check the electrical connection of the air pressure sw...

  • Page 37

    37 domina oasi f 24 - 30 e ferella boil f 24 - 30 mel kea air compact e version - 09.2002 flow diagram 5 checking ignition flow diagram 6 check the modulation of the hot water and heating is led1 on? Is there an ignition spark? Does the burner ignite? Yes has led1 come on after 10 seconds? No yes pr...

  • Page 40

    37047 san bonifacio - vr - italy tel. 045/6139411 - tlx 480172 fax 045/6100233-6100933 cod. 354m009/0