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HIGH EFFICIENCY GAS-FIRED

CAST-IRON BOILERS

PEGASUS F2 T

Models 51 - 68 - 85 - 102

INSTALLATION

AND MANINTENANCE INSTRUCTIONS

Appr. Nr. A 9503 T - 0085 AQ 0765

Summary of Contents for PEGASUS F2 T

Page 1: ...HIGH EFFICIENCY GAS FIRED CAST IRON BOILERS PEGASUS F2 T Models 51 68 85 102 INSTALLATION AND MANINTENANCE INSTRUCTIONS Appr Nr A 9503 T 0085 AQ 0765 ...

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Page 3: ...ntents 1 General technical data 2 Dimensional and technical characteristics 3 Installation 4 Wiring diagrams 5 Startup and shutdown 6 Gas regulation and conversion 7 Maintenance and cleaning 8 Fault finding ...

Page 4: ...ld fit the Pegasus boilers The boiler installation should comply with relevant British standards specifications codes of practice and current building Regulations together with any special regional requirements of the local authorities gas supplier and insurance companies 2 DIMENSIONS AND TECHNICAL DATA 2 01 Dimensional data see fig 1 and table 2 Fig 1 a1 Return 1 1 2 a2 Flow 11 2 a3 Gas inlet 3 4...

Page 5: ...3 36 36 36 36 LPG G31 Pegasus F2 51 T Pegasus F2 68 T Pegasus F2 85 T Pegasus F2 102 T MODEL DIMENSIONS CONNECTIONS Table 2 A mm 550 640 720 800 B mm 96 5 96 5 106 5 106 5 C fl mm 180 180 200 200 D mm 43 46 44 42 E mm 35 38 36 34 RETURN a1 fl 11 2 11 2 11 2 11 2 WATER CONTENT litres 22 26 30 34 MAX WORKING PRESS bar 4 4 4 4 WEIGHT INCLUDING PACKAGE Kg Pegasus F2 51 T Pegasus F2 68 T Pegasus F2 85 ...

Page 6: ...at 3 Boiler on off switch 4 Flue gas re set thermostat 5 Electronic panel nto available 6 Control panel 7 Gas valve 8 Limit thermostat re set 1 2 3 11 13 7 8 12 10 6 5 15 9 14 4 2 03 Main components 9 Pilot burner 10 Burner manifold 11 Gas pressure test point 12 Piezo igniter 13 Automatic air vent 14 Drain cock 15 Flue gas sampling point ...

Page 7: ...ty flue draft If the FLUE GAS DISCHARGE THERMO STAT has been activated you should un screw the control panel protection cover part no 4 in fig 2a and 2b and manually reset thethermostat Afterthat theboiler will return to normal operation If the FLUE GAS DISCHARGE THERMO STAT needs to be replaced use original manufacturer s parts only and make sure the electric connections and positioning of the bu...

Page 8: ...nnection entering the boiler does not dictate the choice of diameter for the pipe between the boiler and the gas meter which should be selected based upon the pipework lecgth and pressure drop Connect the boiler to a single phase 230 V 50 Hz power supply through a standard terminal block or outlet with 2A max fuses connected between the boiler and the power line 3 02 Boiler water characteristics W...

Page 9: ...TANT The manufacturer disclaims any liability for damage to property or persons caused by failure to earth the boiler correctly Electrical connections diagram Fig 5 Key IC Boiler ON OFF switch TA Room thermostat TR Control thermostat TF Flue gas thermostat VG Gas valve TS Limit thermostat manual re set F Thermocouple interruptor CA Auxiliary contact Note Dotted lines indicate connections to be per...

Page 10: ...d in place by slot pins c Unscrew the four screws that hold the plastic panel against the side of the boiler d Rotate the panel to the front to its locked position e Carry out the work and reassemble in reverse order 4 03 Exploded view of the control panel fig 6 Key 1 Control panel 2 Wiring harness protection plate 3 Terminal block 4 Temperature pressure gauge 5 Control thermostat 6 Boiler on off ...

Page 11: ...blocked 5 02 Startup with the HONEYWELL V4600C valve in models 51 68 fig 7a Set the boiler control thermostat 2 fig 2 to minimum Switch off the electrical power Open the gas cock upstream from the boiler Release the air held in the gas pipes by opening the incoming gas valve test point marked with the number 3 fig 7a Press and keep pressed the gas valve control knob 1 Ignite the pilot burner by re...

Page 12: ...ezoelectric ignition button 12 fig 2 Once the pilot light has been ignited keep the gas valve knob pressed for another 15 20 seconds and then release it slowly checking that the pilot light remains lit If it does not wait 30 seconds before igniting it again Switch on boiler Set the boiler regulating thermostat 2 fig 2 to the desired temperature no less than 50 C At this point the main burner shoul...

Page 13: ...kproof at the point of connection between the flue and the boiler Check that gas consumption measured by the gas meter matches that indicated in the technical data table 6 REGULATING 6 01 Adjusting the pressure at the burner As described above the boiler is set up to operate on NATURAL GAS G 20 gas pressure has been tested and calibrated by the manufacturer However due to possible differences in p...

Page 14: ...ler from NATURAL GAS to LPG besides replacing the injectors you should carefully set the pressure regulating screw 2 all the way in REMEMBER The complete LPG conversion kit is supplied on request only 6 05 Replacing the main and pilot burner injectors Caution The following adjustment and conversion operations are to be performed by qualified personnel only To replace the main and pilot injectors p...

Page 15: ... and the flue remove the burner unit from the boiler For access to the cast iron heat exchanger proceed as follows fig 9 Remove the cover of the casing secured by slot pins pull out the insulation covering the draft diverter remove the flue collector inspection cover 2 and its insulation secured with self tapping screws 1 Now you may clean all the flue gas passages in the boiler using a brush 3 Re...

Page 16: ...he flame has been adjusted wrongly Check that the gas inlet pressure is correct Pilot burner is dirty Clean the pilot burner with compressed air Pilot light goes out Thermocouple is faulty Check and replace the thermocouple Insufficient flame Adjust the flame turning the screw on the gas valve until it envelopes the thermocouple Loose contact with the gas valve Tighten the connection to the gas va...

Page 17: ...r is dirty Inspect and clean the boiler body Output is too low Check that the boiler model matches the heating system requirements Control thermostat restarts high Control thermostat has broken down temperature differential Replace the thermostat Thermostat bulb is outside its sheath Check that the bulb is inserted in place Condensation in boiler Control thermostat is adjusted incorrectly Raise th...

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Page 20: ...Lichfield Road Branston Industrial Estate Burton Upon Trent Staffordshire DE14 3HD Tel 08707 282 885 Fax 08707 282 886 ALL SPECIFICATIONS SUBJECT TO CHANGE 3540723 0 01 01 ...

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