Ferroli Domina F 24-30 E, Technical Manual

Page 1: ...plied By www heating spares co Tel 0161 620 6677 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Wall MountingGasBoiler Airtight Chamber for Hot Water and Heating TECHNICAL MANUAL EDITION 09 2002 ...

Page 2: ...eneral view and main components 8 1 4 Technical data table 10 2 Product framework and internal components 11 2 1 Hydraulic circuit heating 11 2 2 Hydraulic circuit tap water 15 2 3 Gas circuit 17 2 4 Burner unit 21 2 5 Fume circuit 23 2 6 Electrical circuit 27 3 Operation 30 3 1 Operating principle 30 3 2 Operating diagram 31 3 3 Control panel 32 3 4 Adjustments 32 3 5 Setting operating parameters...

Page 3: ...n The power for hot water is automatically and continually governed to ensure a fast delivery and comfort under all operating conditions There are 5 LEDs on the control panel providing information on the unit s operating status General Warnings Installation and maintenance must be carried out by professionally qualified personnel according to current regulations and the manufacturer s instructions...

Page 4: ...620 6677 4 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 1 2 Dimensions and connections Domina F 24 E version Key 1 System delivery 2 Tap water outlet 3 Gas inlet 4 Tap water inlet 5 System return Top view Bottom view ...

Page 5: ...620 6677 5 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 Ferella F 24 MEL version Milos Air Compact E version Key 1 System delivery 2 Tap water outlet 3 Gas inlet 4 Tap water inlet 5 System return Top view Bottom view ...

Page 6: ...res co Tel 0161 620 6677 6 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 Domina F 30 E version Key 1 System delivery 2 Tap water outlet 3 Gas inlet 4 Tap water inlet 5 System return Top view Bottom view ...

Page 7: ...s co Tel 0161 620 6677 7 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 Ferella F 30 MEL version Key 1 System delivery 2 Tap water outlet 3 Gas inlet 4 Tap water inlet 5 System return Top view Bottom view ...

Page 8: ...p sensor 36 Automatic air vent 42 Tap water temperature sensor 43 Air pressure switch 44 Gas valve 49 Safety thermostat 50 Heating thermostat 56 Expansion tank 63 Heating temperature setting 73 Antifreeze thermostat optional R1 R2 R3 R4 Antifreeze heating elements optional 74 Heating system cock 81 Ignition electrode 82 Detection electrode 84 1st gas valve operator 85 2nd gas valve operator 90 Fum...

Page 9: ...ld 32 Heating circulator 34 Heating temp sensor 36 Automatic air vent 42 Tap water temperature sensor 43 Air pressure switch 44 Gas valve 49 Safety thermostat 50 Heating thermostat 56 Expansion tank 63 Heating temperature setting 73 Antifreeze thermostat optional R1 R2 R3 R4 Antifreeze heating elements optional 74 Heating system cock 81 Ignition electrode 82 Detection electrode 84 1st gas valve op...

Page 10: ...Supplied By www heating spares co Tel 0161 620 6677 10 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 1 4 Technical data table ...

Page 11: ...he system via the exchanger For more details on the operating logic refer to chap 3 Key 5 Airtight chamber 7 Gas inlet 8 Tap water outlet 9 Tap water inlet 10 System delivery 11 System return 14 Safety valve 16 Fan 20 Burner unit 27 Heat exchanger 29 Fume outlet collar 32 Heating circulator 34 Heating temperature sensor 42 Tap water temperature sensor 43 Air pressure switch 44 Gas valve 49 Safety ...

Page 12: ... might jam due to debris in the water With the front screw it is possible to access the impeller which can be freed with the aid of a screwdriver The connection to the expansion tank and the air separator is installed on the pump casing Checks If the pump doesn t work Check that the impeller is free to turn by turning the screw on the front with a screwdriver Check that both the card and the pump ...

Page 13: ... assembly It comprises a thickly finned portion three circular pipes containing the heating water and inside them another three pipes in the form of a spiral containing the tap water The heating water exchanges directly with the burnt gases while the tap water does not have this kind of exchange it receives heat indirectly from the water in the three heating pipes In this way the surface of the co...

Page 14: ... exceeds 3 bars making boiler operation safer and protecting it against overpressure You are strongly recommended not to use this valve to drain the system once open dirt could remain inside it preventing it from closing completely Check valve This is necessary to ensure no water returns from the heating system to the tap water circuit Filler cock Thisislocatedbetweentheheatingdeliveryandthetapwat...

Page 15: ... sensor 43 Air pressure switch 44 Gas valve 49 Safety thermostat 50 Heating thermostat 56 Expansion tank 74 Heating system cock 81 Ignition electrode 82 Detection electrode 114 Water pressure switch 136 Flow meter 187 Fume diaphragm When the card receives a signal from the flow meter indicating a tap water draw of over 2 5 l min the boilerstartsworkingnormallyfortapwater Ifheatingwasinoperation or...

Page 16: ...oportion to the tap water flow rate It is composed of a body stator and a rotor inside it There is a filter on its inlet to prevent foreign bodies damaging it It should be remembered that to turn on the boiler for tap water operation the tap water pressure must be at least 0 25 bars and the draw flow rate must be greater than 2 5 l min Check To check it works properly you need to make sure the flo...

Page 17: ... return 14 Safety valve 16 Fan 20 Burner unit 27 Heat exchanger 29 Fume outlet collar 32 Heating circulator 34 Heating temperature sensor 42 Tap water temperature sensor 43 Air pressure switch 44 Gas valve 49 Safety thermostat 50 Heating thermostat 56 Expansion tank 74 Heating system cock 81 Ignition electrode 82 Detection electrode 114 Water pressure switch 136 Flow meter 187 Fume diaphragm 2 3 G...

Page 18: ... screw B If there is no gas you must check there is voltage at the operators This makesitpossibletounderstandwhethertheproblemlieswiththevalve there is voltage at the operators or with the card there is no voltage at the contacts X6 1 2 3 4 Modulation The control system governs its boiler capacity so as to keep the delivery temperature constant in accordance with the settings on the control panel ...

Page 19: ...justtheminimumpressurewiththescrew D clockwise to decrease it and anticlockwise to increase it Set the potentiometer P3 to maximum anticlockwise Turn on the TEST function by temporarily bridging X5 Adjustthemaximumpressurewiththescrew E clockwise to increase it and anticlockwise to decrease it Reconnect the pressure compensation tube F Put the protection screw C back in Disconnect the test jumper ...

Page 20: ...r which the unit is preset has to be used a conversion kit will be required proceeding as follows 1 Replace the nozzles at the main burner inserting the nozzles specified in the technical data table according to the type of gas used 2 Adjust the burner minimum and maximum pressres setting the values given in the technical data chart for the type of gas used 3 Move the jumper JP02 on the card as sh...

Page 21: ... of a metal alloy Kanthal that withstands high temperatures and oxidation Its base is composed of a ceramic composite of glazed alumina whose purpose is to protect and electrically insulate it Once the ignition procedure begins the card powers the electrode with a pulsating voltage of a few kV a series of electrical discharges is set off between the electrode and the head of the burner set at a di...

Page 22: ... place homogeneously over the entire length of the single stages with the contribution of the secondary air from the bottom of the burner mount and from the combustion chamber itself The set of stages in operation forms a single belt of flame light blue in colour whose size varies according to the nozzle gas pressure that is the boiler capacity modulation Detection electrode Made of the same mater...

Page 23: ...ile its upper portion is fitted for hooking up with the flues The cover is sealed off with a porous plate and is fitted with two plugs for using a probe to analyse the fumes and combustion air Fan and pressure switch points Powered at 230V 50Hz by the card X6 7 8 the fan has the job of expelling the products of combustion from the fume chamber A plate is normally placed above the exchanger to act ...

Page 24: ...itscontactsagain thedifferenceinpressuremust drop under 150 13Pa To perform checks on contact opening and closing it is always recommended to check directly on the card X5 3 4 Checks It is necessary to check Whether the electrical connections are correct Whether the pressure test point pipes are clean and contain no condensation water That the signal is open when the fan is not working That the pr...

Page 25: ...rfeits all warranty and liability of FERROLI S p A Diaphragms Boiler operation requires fitting the diaphragms supplied with the unit as instructed in the following tables As the resistance of the fume ducts changes the diaphragms make it possible to keep the combustion parameters CO2 etc within the optimum operating range Note that with low resistance fume ducts a high resistance diaphragm small ...

Page 26: ...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 If monitoring the con densate trap is not guaranteed it must be fitted with a suitable drain pipe and air trap which in its turn must be appropriately connected to a suitable drain ...

Page 27: ...inal board The layout of the terminals for the various connections is given in the wiring diagram Wiring diagram Key 16 Fan 32 Heating circulator 34 Heating temperature sensor 42 Tap water temperature sensor 43 Air pressure switch 49 Safety thermostat 50 Heating thermostat 72 Room thermostat not supplied 73 Antifreeze thermostat 81 Ignition electrode 82 Detection electrode 114 Water pressure switc...

Page 28: ...Gas valve Air pressure switch There remain some components described hereunder Ignition detection electrode see chap 2 4 Burner Unit 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 valve directly shutting down the boiler It is set on the left h...

Page 29: ...MILOS 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 The heating sensor performs the antifreeze function too ...

Page 30: ...ities are drawn off Test function Bridging the terminals of connector X5 turns on Test operation In this mode the boiler works as in heating mode but tap water operation idle time and modulation are turned off The test lasts 5 minutes We recommend opening 1 or 2 taps to get rid of the excess capacity Post circulation After the call for heating the circulator performs post circulation for approxima...

Page 31: ...Supplied By www heating spares co Tel 0161 620 6677 31 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 3 2 Operating diagram ...

Page 32: ...stem at the set system delivery setpoint temperature System temperature adjustment With knob B on the control panel we can set the required system temperature To prevent localized condensation on the fume circuit we recommend a minimum temperature of 60 C Hot water temperature adjustment With knob C on the control panel we can set the tap water temperature from 40 C to 55 C 62 C on inserting jumpe...

Page 33: ...ing capacity adjustment potentiometer P4 Potentiometer to adjust the burner gas pressure in the ignition phase The maximum ignition time is 10 sec The ignition curve should be regulated taking account of the type of burner and fuel used natural gas or LPG P5 Minimum pressure adjustment potentiometer The potentiometer P5 is to be used if it is necessary to adjust the minimum current to the second c...

Page 34: ...heating spares co Tel 0161 620 6677 34 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 4 Troubleshooting Flow Diagram 1 Checking Electric Power Supply System Pressure and Antifreeze Protection ...

Page 35: ...ed By www heating spares co Tel 0161 620 6677 35 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 Flow Diagram 2 Checking Hot Water Operation Flow Diagram 3 Checking Heating Operation ...

Page 36: ...Supplied By www heating spares co Tel 0161 620 6677 36 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 Flow Diagram 4 Checking Fan Fume Circuit ...

Page 37: ...www heating spares co Tel 0161 620 6677 37 DOMINA F 24 30 E FERELLA F 24 30 MEL MILOS AIR COMPACT E Version 09 2002 Flow Diagram 5 Checking Ignition Flow Diagram 6 Check the Modulation of the Hot Water and Heating ...

Page 38: ...Supplied By www heating spares co Tel 0161 620 6677 ...

Page 39: ...Supplied By www heating spares co Tel 0161 620 6677 ...

Page 40: ...Supplied By www heating spares co Tel 0161 620 6677 37047 SAN BONIFACIO VR ITALY tel 045 6139411 tlx 480172 fax 045 6100233 6100933 cod 354M002 0 ...