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

Ferroli Domina Oasi F 24 E Technical Manual

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•
Wall-Mounting
Gas Boiler
•
Airtight Chamber,
for Heating and Hot
Water with
Integrated Boiler
TECHNICAL
MANUAL
EDITION
09•2002

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Summary of Contents for Ferroli Domina Oasi F 24 E

  • Page 1 • Wall-Mounting Gas Boiler • Airtight Chamber, for Heating and Hot Water with Integrated Boiler TECHNICAL MANUAL EDITION 09•2002...

  • Page 2: Table Of Contents

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 1. Technical characteristics and data ............3 1.1 Introduction ......................3 1.2 Dimensions and connections .................. 4 1.3 General view and main components ............... 8 1.4 Technical data table ....................

  • Page 3: Technical Characteristics And Data

    Certification The CE marking demonstrates that Ferroli gas units conform to the requirements contained in the applicable European directives. In particular, this unit complies with the following EU directives: •...

  • Page 4: Dimensions And Connections

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 1.2 Dimensions and connections Domina Oasi F 24 E version Top view Gas inlet 100 65 55 3/4" System delivery 3/4" System return 1/2”...
  • Page 5 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Ferella Boil F 24 MEL version & Kea Air Compact E version Top view Gas inlet 3/4" System delivery 100 65 55 3/4"...
  • Page 6 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Domina Oasi F 30 E version Top view Gas inlet 3/4" System delivery 100 65 55 3/4" System return 1/2” Hot tap water 1/2”...
  • Page 7 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Ferella Boil F 30 MEL version Top view Gas inlet 100 65 55 3/4" System delivery 3/4" System return 1/2” Hot tap water 1/2”...

  • Page 8: General View And Main Components

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 1.3 General view and main components F 24 E/MEL version 29 187 Airtight chamber Gas inlet Tap water outlet Tap water inlet System delivery System return 3-bar safety valve (heating)
  • Page 9 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E F 30 E/MEL version 29 187 Airtight chamber Gas inlet Tap water outlet Tap water inlet System delivery System return 3-bar safety valve (heating) 7-bar safety valve (boiler) Combustion chamber Burner assembly...

  • Page 10: Technical Data Table

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 1.4 Technical data table DOMINA OASI - FERELLA BOIL - KEA COMPACT E- MILOS Powers Pmax Pmin Pmax Pmin 25.8 11.5 33.1 14.5 Heating Power (Net Heat Value - Hi) kcal/h...

  • Page 11: Product Framework And Internal Components

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 circulation pump come into operation.
  • Page 12 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 levels (see diagram).

  • Page 13: Expansion Tank

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 frame.
  • Page 14 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Water pressure switch It ensures a minimum pressure for the system. It is normally open (NO) and closes the contact when the pressure exceeds 0.5 bar. It works on low voltage. Safety valve It opens if the pressure exceeds 3 bars, making boiler operation safer and protecting it against overpressure.

  • Page 15: Hydraulic Circuit - Tap Water

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 2.2 Hydraulic circuit – tap water Hydraulic diagram for tap water 29-187 Airtight chamber Safety thermostat Gas inlet Heating thermostat Tap water outlet Expansion tank Tap water inlet Heating system cock...
  • Page 16 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 circuit contained in the boiler.

  • Page 17: Gas Circuit

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 2.3 Gas circuit Gas circuit diagram 29-187 Airtight chamber Safety thermostat Gas inlet Heating thermostat Tap water outlet Expansion tank Tap water inlet Heating system cock System delivery Ignition electrode...

  • Page 18: Gas Valve

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 stable and suited to the type of gas being used, while the valve will supply a regular pressure to the nozzles.
  • Page 19 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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.

  • Page 21: Burner Unit

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 suitable pressure to the manifold, which homogeneously distributes the gas to the single burner stages at the nozzles.

  • Page 22: Burner Assembly

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Detection electrode Made of the same material as the ignition electrode, it is set 11 mm from the burner head. Combustion causes the flame atmosphere to ionize, making it conductive.

  • Page 23: Fume Circuit

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 homogeneous and stable.

  • Page 24: Air Pressure Switch

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Air pressure switch This is used to check whether the fumes are adequately evacuated. The pressure switch compares the static and dynamic signals coming from the pressure test points on the fan according to the figure. The pressure switch is connected to the card and is normally open (see diagram).

  • Page 25: Fume Ducts

    The current standards and local regulations must be observed. This C-type unit must be installed using the fume exhaust and suction ducts supplied by FERROLI S.p.A. in accordance with UNI-CIG 7129/92. Failure to use them automatically forfeits all warranty and liability of FERROLI S.p.A.
  • Page 26 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 damaging it.

  • Page 27: Electrical Circuit

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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 in the wiring diagram. Wiring diagram 230V 230V...
  • Page 28 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Main electronic card The electronic card is a Honeywell PMF03: part of the card works on low voltage (24V) and the remainder on 230V (see diagram) and it is fitted with a fuse (2A). Part of the card is used to control ignition, so it is hooked up to the detection and ignition electrodes and the safety thermostat.
  • Page 29 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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).

  • Page 30: Operation

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 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.

  • Page 31: Operating Diagram

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 3.2 Operating diagram Summer Winter • Hot water taps closed. • Hot water taps closed • Heating adjustment potentiometer "OFF". • Boiler satisfied •...

  • Page 32: Control Panel

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 3.3 Control panel ITEM DESCRIPTION Burner on OFF/ON/RESET switch Shutdown Heating temperature setting Hot water required Standby for heating (blinking light) Hot water temperature setting Heating required (steady light Low system pressure (blinking light) Water gauge...

  • Page 33: Setting Operating Parameters

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 3.5 Operating parameter adjustment Boiler parameter adjustment Temperature adjustment potentiometer. Controls the heating delivery temperature from 30°C to 85°C. The minimum position selects “Summer” operation. Hot tap water adjustment potentiometer.

  • Page 34: Troubleshooting

    DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E 4. Troubleshooting Flow Diagram 1 Checking Electric Power Supply - System Pressure and Antifreeze Protection First of all, check the following points •...
  • Page 35 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Flow Diagram 2 Checking Hot Water Operation Set the hot water temperature to maximum Check and if necessary change Is LED3 on? the hot water sensor Is the tap water Check and if necessary change...
  • Page 36 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Flow Diagram 4 Checking Fan/Fume Circuit Does the fan turn? Is the relay RY02 closed? Is the air pressure switch activated? Proceed with diagram 5 Is the pressure difference in the air...
  • Page 37 DOMINA OASI F 24 - 30 E FERELLA BOIL F 24 - 30 MEL KEA AIR COMPACT E Flow Diagram 5 Checking Ignition Is LED1 on? LED2 (shutdown) comes Is there an ignition spark? on without the boiler lighting Proceed with Does the burner ignite? Recheck the air diagram 6...
  • Page 40 37047 SAN BONIFACIO - VR - ITALY tel. 045/6139411 - tlx 480172 fax 045/6100233-6100933 cod. 354M009/0...

This manual is also suitable for:

Ferella boil f 24 melKea air compact eDomina oasi f 30 eFerella boil f 30 mel

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