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. • Wall-Mounting Gas Boiler • Airtight Chamber, for Hot Water and Heating TECHNICAL MANUAL EDITION 09•2002 Supplied By www.heating spares.co Tel. 0161 620 6677. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 1. Technical characteristics and data.3 1.1 Introduction.3 1.2 Dimensions and connections.

Ferroli Domiproject F24 D Manual. Centrala termica murala ferroli fereasy f 24 manual utilizare. Domiproject f 24 d instruc iuni de utilizare. Ferroli fereasy f24 manual utilizare - Centrala termica Ferroli FEReasy F24, Centrala termica murala Ferroli FEReasy F 24, FERRO- P, Caramida aparenta Ferro NU.

4 1.3 General view and main components.8 1.4 Technical data table. 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: •. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 1.2 Dimensions and connections Domina F 24 E version Top view System delivery Tap water outlet Gas inlet Tap water inlet Bottom view System return Version - 09.2002 Supplied By www.heating spares.co Tel. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Ferella F 24 MEL version & Milos Air Compact E version Top view System delivery Tap water outlet Gas inlet Tap water inlet Bottom view System return Version - 09.2002 Supplied By www.heating spares.co Tel. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Domina F 30 E version Top view System delivery Tap water outlet Gas inlet Tap water inlet Bottom view System return Version - 09.2002 Supplied By www.heating spares.co Tel.

DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Ferella F 30 MEL version Top view System delivery Tap water outlet Gas inlet Tap water inlet System return Bottom view Version - 09.2002 Supplied By www.heating spares.co Tel. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 1.3 General view and main components F 24 E/MEL version Airtight chamber Gas inlet Tap water outlet Tap water inlet System delivery System return Safety valve Combustion chamber Burner unit. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E F 30 E/MEL version Airtight chamber Gas inlet Tap water outlet Tap water inlet System delivery System return Safety valve Combustion chamber Burner unit Main nozzle Burner Combustion chamber insulation. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 1.4 Technical data table Version - 09.2002 Supplied By www.heating spares.co Tel.

0161 620 6677. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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 section.

It has three delivery/head levels (see diagram). DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Expansion tank It is connected to the pump casing via a pipe with a fork connection. On the 24kW version, it is located above the pump, while on the 30kW version it is located behind the exchanger, inside the frame. The expansion tank contains a diaphragm in contact, on one side, with the system water and, on the other side, with the air under pressure (pre-loaded to 1 bar) inside the tank. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Hydraulic unit This is a single piece of brass to which the exchanger delivery is connected for ease of access. It accommodates a number of safety and adjustment components.

DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 2.2 Hydraulic circuit – tap water Hydraulic diagram for tap water Airtight chamber Gas inlet Tap water outlet Tap water inlet System delivery System return Safety valve Burner unit Heat exchanger. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Flow meter Located at the cold water inlet, its task is to provide the card with a signal at a frequency (7 Hz per litre) in direct proportion to the tap-water flow rate. It is composed of a body (stator) and a rotor inside it.

DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 2.3 Gas circuit Gas circuit diagram Airtight chamber Gas inlet Tap water outlet Tap water inlet System delivery System return Safety valve Burner unit Heat exchanger Fume outlet collar Heating circulator. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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.

DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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.

DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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). 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.

DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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 Room thermostat (not supplied) Heating circulator. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Main electronic card The electronic card is a Honeywell MF03: part of the card works on low voltage (24V) and the remainder on 230V (see diagram) and it is fitted with a fuse (2A).

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DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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). DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 3.2 Operating diagram Version - 09.2002 Supplied By www.heating spares.co Tel. 0161 620 6677.

DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 3.3 Control panel 3.4 Adjustments Room temperature adjustment (with room thermostat on) Using the room thermostat or remote control, set the temperature desired in the rooms. Controlled by the room thermostat, the boiler lights and heats the system water to the set system delivery setpoint temperature. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS 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. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E 4.

Troubleshooting Flow Diagram 1 Checking Electric Power Supply - System Pressure and Antifreeze Protection Version - 09.2002 Supplied By www.heating spares.co Tel. 0161 620 6677. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Flow Diagram 2 Checking Hot Water Operation Flow Diagram 3 Checking Heating Operation Version - 09.2002 Supplied By www.heating spares.co Tel. 0161 620 6677.

DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Flow Diagram 4 Checking Fan/Fume Circuit Version - 09.2002 Supplied By www.heating spares.co Tel. 0161 620 6677. DOMINA F 24 - 30 E FERELLA F 24 - 30 MEL MILOS AIR COMPACT E Flow Diagram 5 Checking Ignition Flow Diagram 6 Check the Modulation of the Hot Water and Heating Version - 09.2002 Supplied By www.heating spares.co Tel. 0161 620 6677. Supplied By www.heating spares.co Tel. 0161 620 6677. Supplied By www.heating spares.co Tel.

0161 620 6677. 37047 SAN BONIFACIO - VR - ITALY tel. 0 - tlx 480172 fax 0-6100933 cod. 354M002/0 Supplied By www.heating spares.co Tel. 0161 620 6677.