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FERSYSTEM TECH 31 C

I N S T R U C T I O N S F O R U S E I N S T A L L A T I O N A N D M A I N T E N A N C E

cod. 3540U320 - 09/2009 (Rev. 00)



Seasonal Efficiency

(SEDBUK)

band A

Summary of Contents for FERSYSTEM TECH 31 C

Page 1: ...FERSYSTEM TECH 31 C INSTRU CTION S FOR USE INS T ALL AT ION AND MAIN TE NAN CE cod 3540U320 09 2009 Rev 00 Seasonal Efficiency SED BU K band A ...

Page 2: ...stered engi neer The appliance may not be used for purposes other than those for which it was explicitly designed Any other use is considered improper and therefore dan gerous Incorrect installation and use or failure to follow the instructions provided by the manufacturer absolve the manufacturer from all liability for damage Afterunpacking checkthatthecontentsarecomplete and undamaged Keep the p...

Page 3: ... water connections 14 2 4 Connection to the gas system 16 2 5 Electrical Connections 16 2 6 Flue system 18 2 7 Condensate outlet connection 23 3 SERVICE AND MAINTENANCE 25 3 1 Adjustments 25 3 2 System start up 26 3 3 Maintenance 27 3 4 Troubleshooting 29 4 TECHNICAL CHARACTERISTICS AND DATA 31 4 1 Dimensions and connections 31 4 2 General view and main components 32 4 3 Hydraulic diagram 33 4 4 T...

Page 4: ...e boiler is totally room sealed from the installation room the air needed for combustion is drawn from outside The boiler also includes a modulating speed fan modulating gas valve pump expansion vessel safety valve flow sensor temperature sensors a safety thermostat and a low water pressure switch Thanks to the twin microprocessor control and adjustment system with advanced self diagnosis unit ope...

Page 5: ...ter mode operation 11 Multi function indication Flashing during heat exchanger protection 12 Economy symbol 13 Central Heating mode operation 14 Central Heating symbol 15 Burner on and actual load indication Flashing during flame current supervision Indication during boiler operation Central Heating mode The Central Heating heat demand generated by the OpenTherm Remote Control the Room Thermostat ...

Page 6: ...downs in winter it is advisable to drain all water from the system Ignition Ensure the power is on to the appliance For the firsts 120 seconds the display shows FH that identifies the Air purge function During the first 5 seconds the display shows the software version of the pcb Open the gas cock on the boiler and purge the air from the pipework upstream of the gas valve When the FH disappears the...

Page 7: ...rost protection will still be active To totally isolate close the gas cock ahead of the boiler and disconnect electrical power To avoid damage caused by freezing during long shutdowns in winter it is advisable to drain all water from the system To turn boiler on again press part 7 fig 1 for 5 seconds The boiler is ready to function automatically whenever the external controls are calling for heat ...

Page 8: ...e room thermostat the boiler lights and heats the system water to the system delivery setpoint temperature The burner shuts down when the desired temperature in the room is reached A room thermostat and programmer are a mandatory requirement Building regulations Doc L 2002 Room temperature adjustment using an optional Remote Control Using the remote control set the temperature desired The flow tem...

Page 9: ... tem perature compensation mode In O T C mode the temperature of the heating system is controlled according to the external climate conditions this will guarantee a high degree of comfort and energy saving all year round By the CH push buttons Part 3 and 4 fig 1 is possible to set the maximum flow temperature for the installation O T C setting To enter the OTC mode press reset Part 6 fig 1 for 5 s...

Page 10: ...2009 Rev 00 To exit the OTC mode press reset Part 6 fig 1 for 5 seconds fig 13 fig 14 Maximum boiler flow temperature Outside temperature Outside temperature Outside temperature Maximum boiler flow temperature Maximum boiler flow temperature ...

Page 11: ...operation must be reset manually by pressing the reset Part 6 fig 1 for 1 second Other faults F indication cause temporary shutdowns that are automatically reset as soon as the value causing the fault comes back within the boiler s normal working range Listed below are some anomalies that can be caused by simple user solvable problems If the problem remains after two attempts at resetting contact ...

Page 12: ...lation can cause damage or physical injury for which the manufacturer declines any responsibility This appliance must be installed strictly in accordance with these instructions and regulations The Gas Safety Regulations Installations Use The Local Building Regulations The Building Regulations Part L The Buildings Standards Scotland Consolidated Regulations British Standards Codes of Practice B S ...

Page 13: ...wall The wall fixing must ensure a stable and effective support for the appliance using the bracket and fixings supplied If the unit is enclosed in a cupboard or moun ted alongside there must be space for normal maintenance work Fig 15 and tab 1 gives the minimum clearances to leave around the unit Safe Handling of Substances Care should be taken when handling the boiler insulation panels which ca...

Page 14: ...pipes of the heating system to remove residues or impurities that could affect the unit s operation BS 7593 Building regs Doc L Make the connections to the appliance as shown in fig 16 Key 1 System flow 22 mm with isolation valve fitted 2 DHW outlet 15 mm 3 Gas inlet 22 mm with isolation valve fitted 4 Cold main inlet 15 mm with isolation valve fitted 5 System return 22 mm with isolation valve fit...

Page 15: ...e of mains water to charge and pressurise the system directly is conditional upon the Local Water Byelaws Again any such connection must be disconnected after use A filling connection is supplied with the valve set in the boiler box Attention is drawn to the Model Water Byelaws Key A Cold water inlet valve B Double check valve C Blanking cap D Removable connection E Blanking plug F Isolation valve...

Page 16: ...ipework must be adquately supported An isolating gas valve is provided and should be fitted on the boiler gas inlet Please wait 10 minutes when lighting from cold before checking Gas pressures should be checked after the boiler has operated for 10 minutes to reach thermal equilibrium This appliance has no facility to check the burner pressure however if the inlet pressure and the gas rate are corr...

Page 17: ...tric power cable use only HAR H05 VV F 3x0 75 mm2 cable with a maximum outside diameter of 8 mm Access to the electrical terminal block Follow the instructions given in fig 20 to access the electrical connection terminal board The layout of the terminals for the various connections is given in the wiring diagram in the Technical Data chapter Key 72 Room thermostat Volt Free 138 Outside temperature...

Page 18: ...installation it is first necessary to check that the flue system does not exceed the maximum permissible length The current standards and local regulations must be observed It should be noted that only Fer flue system and accessories should be used on this appliance as per BS 5440 2000 and C E test certification Room thermostat CAUTION THE ROOM THERMOSTAT MUST HAVE VOLTAGE FREE CONTACTS CONNECTING...

Page 19: ...and causing dripping Starting accessory for coaxial ducts Before proceeding with installation check with table 2 that the maximum permissible length is not exceeded bearing in mind that every coaxial bend gives rise to the reduction indicated in the table For example a Ø 60 100 duct compris ing a 90 bend 1 horizontal metre has a total equivalent length of 2 metres Table 2 Max length coaxial ducts ...

Page 20: ... sure the maximum permissible length has not been exceeded by means of a simple calculation 1 Establish the layout of the system of split flues including accessories and outlet terminals 2 Consult the table 4 and identify the losses in meq equivalent metres of every element according to the installation position 3 Check that the sum total of losses is less than or equal to the maximum permissible ...

Page 21: ...ble 4 Accessories Losses in meq Air inlet Fume exhaust Vertical Horizontal Ø 80 PIPE 1 m M F 1KWMA83W 1 0 1 6 2 0 BEND 45 M F 1KWMA65W 1 2 1 8 90 M F 1KWMA01W 1 5 2 0 PIPE SECTION with test point 1KWMA70W 0 3 0 3 TERMINAL air wall 1KWMA85A 2 0 fumes wall with antiwind 1KWMA86A 5 0 FLUE Split air fumes 80 80 1KWMA84U 12 0 ...

Page 22: ...minal on the same wall Vertically from a terminal on the same wall From an opening in the car port e g door window into the dwelling Above ground roof or balcony level 300mm 300mm 300mm 200mm 75mm 200mm 150mm 100mm 300mm 600mm 300mm 300mm 150mm 1200mm 1200mm 1500mm N A A B C D E F G H I J K L M N O P Q NOTE N A Not applicable In addition the terminal should not be nearer than 150mm fanned draught ...

Page 23: ... are permissible with a vertical progression and with no constrictions Have the flue conveying the hot fumes adequately distanced or isolated from combustible mate rials Be connected to just one unit per floor for at most 6 units in all 8 if there is a compensation duct or opening Have no mechanical suction devices in the main ducts Be at a lower pressure all along their length under conditions of...

Page 24: ...tic not copper as the condensate has a ph value of 4 slightly acidic Where it is not possible to terminate internally the condensate discharge pipe may be run outside see below drawing Any external run is subject to freezing in severe weather conditions To avoid this the pipework should be installed to dispose of the condensate quickly with as much as possible run internally before passing through...

Page 25: ...C and remove gas pipe A from the fan venturi assembly 4 Replace nozzle B inserted in the gas pipe with that contained in the conversion kit 5 Reassemble gas pipe A with the clip and check the seal of the connection 6 Apply the label contained in the conversion kit near the dataplate 7 Refit the sealed chamber and casing 8 Modify the parameter for the type of gas put the boiler in standby mode pres...

Page 26: ...oiler Vent and spin the pump Ensure the flue system is correctly fitted including terminal locations Ignition Open the gas valve upstream of the boiler Purge the air from the installation pipework to the appliance Switch on the boiler electrical supply Press the key on the boiler for 5 seconds part 7 fig 1 The boiler is now ready to function automatically whenever there is a demand on the boiler I...

Page 27: ...e terminal and ducts must be free of obstructions and leaks The gas and water systems must be sound The burner and exchanger must be clean The electrodes must be free of deposits and correctly positioned The system pressure when cold must be approx 1 bar otherwise bring it to that value The expansion vessel must be filled to 1 bar cold with zero system pressure The gas flow and pressure must corre...

Page 28: ...amps etc In addition it is necessary to pay attention after performing all these operations to check and carry out all the phases of ignition and thermostat operation the gas valve and circulation pump After these checks make sure there are no gas leaks Combustion analysis Itispossibletoanalysethecombustionthrough the air and flue sampling points shown in fig 16 To make the measurement it is neces...

Page 29: ... board defective Check the PCB A03 High limit protection Flow temperature sensor not active or correctly located Check the correct positioning and operation of the flow sensor No system circulation Check the pump and radiator valves present in the system Check operation of the internal by pass A04 Flue gas fault Fault F07 happened 3 times in the last 24 hours Check the flue A05 Fan problem Tachome...

Page 30: ...he sensor Sensor damaged or wiring broken Check the wiring or change the sensor F15 Fan problem Tachometer signal interrupted fan connection Check the wiring and fan Fan damaged debris in fan Check the fan clean debris F34 Supply voltage under 170V Electric supply problem Check the electrical system F35 Irregular mains frequency Electric supply problem Check the electrical system F37 Incorrect sys...

Page 31: ...22 mm with isolation valve fitted c w filter 6 Pressure Relief Valve 7 Condense outlet Key 1 System flow 22 mm with isolation valve fitted 2 DHW outlet 15 mm 3 Gas inlet 22 mm with isolation valve fitted 4 Cold main inlet 15 mm with isolation valve fitted 1 2 3 4 6 5 7 80 120 120 80 194 330 400 700 83 76 54 51 80 56 179 2 231 2 fig 31 ...

Page 32: ... 22 Main burner 29 Internal flue collar 32 Heating pump 36 Automatic air vent 37 Cold water inlet filter 39 Cold water flow limiter 42 D h w temperature sensor 44 Gas valve 56 Expansion vessel 82 Ionisation electrode 95 Motorised Diverting valve 114 Water pressure switch 136 Flow meter 145 C h pressure gauge 154 Condensate outlet pipe 161 Heat exchanger 186 Return temperature sensor 188 Spark Elec...

Page 33: ...eturn 14 Heating Pressure Relief safety valve 16 Premix fan assembly 32 Heating pump 36 Automatic air vent 42 D h w temperature sensor 44 Gas valve 56 Expansion vessel 95 Motorised Diverting valve 114 Water pressure switch 136 Flow meter 154 Condensate outlet pipe 161 Heat exchanger 186 Return temperature sensor 193 Siphon 194 Domestic plate Heat exchanger 241 Automatic by pass valve 278 Double se...

Page 34: ... C 95 Heating circuit PMS safety valve preset bar 3 Minimum working pressure in heating bar 0 8 Expansion vessel capacity litres 8 Expansion vessel pre filling pressure bar 1 Total boiler water content litres 1 5 Hot water Hot tap water supply Dt 25 C l min 17 6 Hot tap water supply Dt 30 C l min 14 7 Hot tap water supply Dt 35 C l min 12 6 Tap water temperature adjustment range C 40 55 Maximum wo...

Page 35: ...0 4 5 Diagrams Head available for the system fig 34 Key 1 2 3 Pump selector positions In order to obtain maximum hot water output the pump must be left in position 3 A Boiler losses of head 0 1 2 3 4 5 6 7 0 500 1 000 1 500 2 000 Q l h H m H2O A 3 2 1 ...

Page 36: ...alve 62 Time clock optional 72 Room thermostat 81 Spark Electrode 82 Ionisation electrode 95 Diverting valve 101 Main p c b 104 Fuse 114 Water pressure switch 136 Flowmeter 138 Outside temperature sensor 139 Room unit 186 Return temperature sensor 191 Flue temperature sensor 202 Transformer 230V 24V 203 230v A C switched supply 278 Double sensor Safety Heating ...

Page 37: ......

Page 38: ...TED FOR THE DOMESTIC HOT WATER MODE MEASURE RECORD GAS RATE ft3 hr MAXIMUM BURNER OPERATING PRESSURE IF APPLICABLE mbar COLD WATER INLET TEMPERATURE C HOT WATER OUTLET TEMPERATURE C WATER FLOW RATE lts min FOR CONDENSING BOILERS ONLY CONFIRM THE FOLLOWING THE CONDENSATE DRAIN HAS BEEN INSTALLED IN ACCORDANCE WITH THE MANUFACTURER S INSTRUCTIONS YES FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING THE H...

Page 39: ...NTS SIGNATURE SERVICE 3 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 4 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 5 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 6 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 7 DATE ENG...

Page 40: ...n the event of a boiler shut down check this is not caused by lack of electricity supply gas supply or low water pressure before calling our Customer Service Helpline Lichfield Road Branston Industrial Estate Burton Upon Trent Staffordshire DE14 3HD Should you require any assistance during the installation call our Technical Service Helpline on 0871 559 2927 Should you require a service engineer t...

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