Ferroli PEGASUS F2 N 2S Instructions For Use, Installation And Maintenance
Cast iron gas boiler for heating with electronic ignition and flame control
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Summary of Contents for Ferroli PEGASUS F2 N 2S
- Page 1 PEGASUS F2 N 2S CAST IRON GAS BOILER for heating with electronic ignition and fl ame control INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE...
- Page 2 Certifi cation This symbols calls attention to a The CE marking demonstrates that Ferroli note or important notice gas units conform to the requirements contained in the applicable European directives.
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Page 3: Table Of Contents
Pegasus F2 N 2S 1. Operating instructions................4 1.1 Introduction......................4 1.2 Control panel ......................4 1.3 Turning on and off....................5 1.4 Adjustments ......................5 1.5 Maintenance......................6 1.6 Anomalies........................6 2. Installation ....................7 2.1 General Instructions....................7 2.2 Place of installation ....................7 2.3 Plumbing connections.....................7 2.4 Gas connection .......................8 2.5 Electrical Connections ....................9... -
Page 4: Operating Instructions
Please read this manual carefully and keep it for future reference. Pegasus F2 N 2S is a high-effi ciency heat generator for central heating running on natural or liquid gas (confi gurable at installation time) and regulated by an advanced electronic control system. -
Page 5: Turning On And Off
Pegasus F2 N 2S 1.3 Turning on and off Ignition • Open the gas valve ahead of the boiler. • Turn on or insert any switch or plug ahead of the boiler • Turn the boiler switch “8” onto 1 (Fig. 1). -
Page 6: Maintenance
Pegasus F2 N 2S 1.5 Maintenance The user must have the heating system serviced by qualifi ed personnel at least once a year and combustion checked at least every two years. Consult chapter 3.3 of this manual for more information. -
Page 7: Installation
Pegasus F2 N 2S 2. INSTALLATION 2.1 General Instructions This device must only be used for the purpose for which it is specially designed. This unit is designed to heat water to a temperature below boiling point at atmospheric pressure and must be connected to a heating system and/or a water supply system for domestic use, compatible with its performance, characteristics and its heating capacity. -
Page 8: Gas Connection
Pegasus F2 N 2S It is advisable to install on-off valves between the boiler Rear View and heating system allowing the boiler to be isolated from the system if necessary. Make the boiler connection in such a way that its internal pipes are free of stress. -
Page 9: Electrical Connections
Pegasus F2 N 2S 2.5 Electrical Connections Connection to the electrical grid The boiler must be connected to a single-phase, 230 Volt-50 Hz electric line. The unit’s electrical safety is only guaranteed when correctly connected to an effi cient earthing system executed according to current safety standards. -
Page 10: Connection To The Fl Ue
Pegasus F2 N 2S Any additional sensitive elements of the system’s control and safety devices, temperature sensor, pressure switch, thermostat bulb, etc., must be located on the delivery pipe within 40 cm. of the rear wall of the boiler casing (see Fig. 7). - Page 11 Pegasus F2 N 2S Characteristics of the system water In the presence of water harder than 25° - 30° Fr, we recommend the use of suitably conditioned water for the heating system in order to avoid possible scaling in the boiler, caused by hard water, or corrosion produced by aggressive water.
- Page 12 Pegasus F2 N 2S Electrical connection of module generators Each generator comprising the modular assembly is supplied pre-wired for both the adjustments and the safety devices. It can therefore operate on its own (see wiring diagrams of paragraph 4.5). Connect each generator to a single-phase electric line of 230 V ~ 50 Hz, neutral phase, via a terminal board or regular plug, inserting fuses max.
- Page 13 Pegasus F2 N 2S Application systems The 2 application systems are described here. System 1: 4 modular generators with no hot water production Application Direct delivery heating with at most 4 modular generators. W6050C fi g. 11a W6050C fi g. 11b...
- Page 14 Pegasus F2 N 2S System 2: 4 modular generators with hot water production Application Direct delivery heating with at most 4 modular generators with hot water production via diverter valve. W6050C fi g. 12a W6050C fi g. 12b Key: C1 - C2 - C3 - C4 = Modular generators...
- Page 15 In order to make the electric connection between the four-stage sequence governor W6050C, the module generators Pegasus F2 N 2S and the various system components more straightforward and functional, we have made a control and check panel for heating plants.
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Page 16: Service And Maintenance
Adjusting the burner gas pressure The Pegasus F2 N 2S boilers are made to burn natural or liquid gas. The pressure setting and test are performed in the factory. However, as there may be changes in supply pressure, at the time of the fi rst ignition it will be necessary to check and perhaps adjust the pressure at the nozzles, observing the values given in the technical data chart in paragraph 4.3. - Page 17 Pegasus F2 N 2S From natural to liquid gas 1 Replace the nozzles at the main burner and pilot light, inserting the nozzles specifi ed in the technical data table in chap. 4.3. 2 Remove the small plug 3 (Fig. 14) from the gas valve, screw the ignition “STEP” regulator 2, contained in the conversion kit, onto the valve and put the plug 3 back onto the regulator.
- Page 18 Pegasus F2 N 2S Opening the safety cap Decrease Valve Honeywell Increase VR 4601 QB VR 4611 QB fi g. 14 Main components key Pressure point upstream from the valve Ignition “STEP” regulator for liquid gas Plug Safety cap Pressure adjustment screw for maximum power Pressure adjustment screw for minimum power (1st stage) “O RING”...
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Page 19: System Start-Up
Pegasus F2 N 2S 3.2 System start-up System start-up must be carried out by Qualifi ed Personnel. The following operations and checks are to be made at the fi rst ignition, and after all maintenance work that involved disconnecting from the systems or work on safety devices or parts of the boiler. -
Page 20: Maintenance
• The gas fl ow and pressure must correspond to that given in the respective tables. • The circulating pumps must not be blocked. Safety devices The Pegasus F2 N 2S boiler is equipped with devices that guarantee safety in the event of operating trouble. Temperature limiter (safety thermostat) and manual reset This device prevents the water temperature in the system from exceeding boiling point. - Page 21 Pegasus F2 N 2S Opening the front panel To open the front panel of the boiler, see the sequence in Fig. 15. Before carrying out any operation inside the boiler, disconnect the electrical power supply and close the gas cock upstream.
- Page 22 Pegasus F2 N 2S Disassembly and cleaning the burner unit to remove the burner unit: • Disconnect the electrical power supply and turn off the gas ahead of the boiler. • Unscrew the two screws securing the electronic fl ame controller to the gas valve (Fig. 17) and extract it from this valve (Fig.
- Page 23 Pegasus F2 N 2S Pilot light unit 3 ÷ 4 mm Combustion chamber door Inspection door fi g. 21 Pilot burner Ignition electrode Detection electrode Pilot nozzle Gas supply pipe Cleaning the boiler and fl ue To clean the boiler properly (Fig. 22): •...
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Page 24: Troubleshooting
Pegasus F2 N 2S 3.4 Troubleshooting Fault Cause and cure. After a few attempts at ignition, the electronic controller shuts down the boiler. Pilot light nozzle dirty - Clean with compressed air. Check the regular gas flow to the boiler and the air has been eliminated from the pipes. - Page 25 Pegasus F2 N 2S Burner explosion. Delay on ignition. Check that the gas pressure is sufficient and the boiler casing is not dirty. The adjustment thermostat switches back on with too great a temperature difference. Check that the thermostat bulb is properly inserted in the sheath.
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Page 26: Technical Characteristics And Data
Pegasus F2 N 2S 4 TECHNICAL CHARACTERISTICS AND DATA 4.1 Dimensions and connections Front view Rear View Side view fi g. 23 Type and model Return Delivery Inlet Heating Heating Pegasus F2 N 51 2S 1” 1/2 1” 1/2 3/4”... -
Page 27: General View And Main Components
Pegasus F2 N 2S 4.2 General view and main components fi g. 24 Legenda Pilot burner together with electrodes Gas valve Electronic fl ame controller “0 - 1 - TEST” switch 2-stage adjustment thermostat Electronic controller reset button Rearmament of fl ue thermostat... -
Page 28: Technical Data Table
Pegasus F2 N 2S 4.3 Technical data table MODEL Pmax Pmin Pmax Pmin Pmax Pmin Pmax Pmin Powers 32,7 74,8 43,6 93,5 54,5 112,0 65,4 Heating Power (Net Heat Value - Hi) 39,5 49,5 102,0 59,5 Useful heating power Pmax... -
Page 29: Diagrams
Pegasus F2 N 2S 4.4 Diagrams Loss of head 6 7 8 9 10 Delivery m /h fi g. 25 Pegasus F2 N 51 2S Pegasus F2 N 68 2S Pegasus F2 N 85 2S Pegasus F2 N 102 2S... -
Page 30: Wiring Diagrams
Pegasus F2 N 2S 4.5 Wiring diagrams Electrical connection diagram for 119 and 136 models fi g. 14a Ignition electrode Switch Heating circulator (not supplied) Reset button with indicator lamp Combination gas valve 1° level Test button 2nd Combination gas valve 1° level... - Page 31 Pegasus F2 N 2S Main wiring diagram for 119 and 136 models fi g. 14b Ignition electrode Switch Heating circulator (not supplied) Reset button with indicator lamp Combination gas valve 1° level Test button 2nd Combination gas valve 1° level...
- Page 32 Should you require help with any diffi culties call our Technical Service Helpline on 08707 282 885 Phone numbers: Installer Service Engineer BECAUSE OF OUR CONSTANT ENDEAVOUR FOR IMPROVEMENT DETAILS MAY VARY SLIGHTLY FROM THOSE QUOTED IN THESE INSTRUCTIONS. ALL SPECIFICATIONS SUBJECT TO CHANGE Please note - to avoid incurring unnecessary expense, in the event of a boiler shut down, check this in not caused by lack of electricity supply, gas supply or low water pressure before calling our Customer Service Helpline.
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