Fondital FORMENTERA KC 24 Скачать руководство пользователя страница 31 | Manualshive

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31

AST 14 C 257/00

AIR/GAS MIXER

The  air/gas  mixture  is  generated  inside the mixer, thanks to air flow via the vacuum
developed by the fan, and sent to the gas valve mechanism.
When  the  fan  is powered on, it creates a vacuum proportional to its speed, giving a
mixture with a constant ratio from maximum to minimum power. In addition to extracting
the  combustion  air, the fan  impeller mixes  the air and gas and conveys  the  mixture  along  a
pipe to the burner.

The mixer is connected to the fan suction inlet, and features a mechanism that increases
or decreases the air and gas flow rate according to the requested output, thereby ensuring
very low minimum boiler modulation. Inside the mixer is a double deflector, which at the
minimum power closes by gravity the gas outlet of one nozzle and cuts off half of the
combustion air flow. When fan power is increased, these deflectors are opened by
vacuum, allowing the passage of both air and gas.

Deflectors open

Deflectors closed

GAS

INLET

COMBUS TION

AIR

INLET

AIR/GAS

MIXTURE TO

BURNER

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Содержание FORMENTERA KC 24

Страница 1: ...mounted condensing boilers GROUP Instantaneous with forced draught MODELS Formentera Condensing VERSIONS For indoor installation CODE AST 14 C 257 00 ______________________________________________ 1 s...

Страница 2: ...n unit and gas valve 3 6 Flue gas venting and condensate drain system ___________________Page 17 SECTION 04 GAS SETTING AND PARAMETERS 4 1 Gas valve setting 4 2 Chimney sweep function 4 3 Gas conversi...

Страница 3: ...________________________________________________________________________________ 3 AST 14 C 257 00...

Страница 4: ...ensing C combined R heating only MAIN FEATURES FORMENTERA Condensing KC 24 28 32 combined instantaneous condensing boiler for indoor installation with DHW heating sealed chamber forced draught mono th...

Страница 5: ...___________________________________________ 5 AST 14 C 257 00 Front view Side view View from below View from above G Gas inlet 1 2 M Heating system flow 3 4 R CH return 3 4 AF Cold w ater inlet 1 2 AC...

Страница 6: ...________________________________________________________________________________ 6 AST 14 C 257 00 INSTALLATION DIAGRAM...

Страница 7: ...m reducedoperating temperature C 45 2 DHW regulation range C 35 57 Maximum DHW operatingtemperature C 57 5 Nominal expansion vessel capacity l 10 Maximum recommended system capacity l 200 Nominal rati...

Страница 8: ...heat loss with burner on 1 40 5 70 Flue system heat losswith burner on 2 40 2 00 Flue natural gas mass flow rate g s 13 93 1 47 Flue gas air temperature C 60 45 Residual pressure available Pa 170 2 0...

Страница 9: ...37 2 3 0 10 0 10 0 KC KR 28 Max heat input MIN MAX heat output Gas mains inlet pressure No of nozzles Diameter nozzles MIN MAX CO2 value kW kW mbar mm G20 natural gas 26 4 3 0 25 4 60 80 C 3 58 27 9 3...

Страница 10: ...mode selection Press this button to set one of the following functions SUMMER Boiler on DHW only WINTER Boiler on both CH and DHW CENTRAL HEATING ONLY Boiler on CH mode only STANDBY OFF boiler in stan...

Страница 11: ...he heating mode It flashes when CH temperature isregulatedvia button 6 see above Fictitious ambient temperature indicator When an external probe isinstalled thisindicator flasheswhen the fictitious am...

Страница 12: ...dicator When displayed simultaneously with the parameter display indicator it indicates the system pressure only with the boiler awaiting a request Percentage indicator When displayed simultaneously w...

Страница 13: ...w ith flame lit The flow temperature and the burner output percentage are displayed Malfunctioning user resettable and auto resettable faults The displayindicates the failure with the associated erro...

Страница 14: ...Boiler shutdow n due to flow probe fault f Boiler shutdow n due to DHW probe fault f Boiler shutdow n due to flue gas probe fault f System pressure too high Boiler shutdow n due to failure of the tank...

Страница 15: ...rror remote control and ambient thermostat Pressure transducer fault f Communication error betw een the main board and the interface board Shutdow n due to safety circuit hardw are failure Incompatibi...

Страница 16: ...the shutdow n counter under super technical parameters P01 to P05 Important They can be view ed on the display by setting super technical parameter P90 to 1 f flow r return Malfunctions errors resett...

Страница 17: ...4 Filling tap 6 Return temperature sensor 25 Cold water flow meter with filter 7 Primary condensing exchanger 26 Secondary plate exchanger 9 De aerator 27 DHW temperature sensor 10 Combustion air inta...

Страница 18: ...r 4 Modulating fan 18 De aerator 5 Primary condensing exchanger 19 Circulation pump 6 De aerator 20 Discharge tap 7 Combustion air intake system 21 Automatic bypass 8 Flue gas vent system 9 Flue gas s...

Страница 19: ...changer is connected by means of the three way valve to another thermopolymer assemblythat connects the cold water inletpipe to the restof the plumbing assembly The stainless steel plate heatexchanger...

Страница 20: ...ermostatic valve the bypass ensures a minimum flow inside the primary exchanger Its job is to prevent the primary condensing heat exchanger from overheating caused by low or no water circulation COLD...

Страница 21: ...equently on the plant head for all capacities the only different element depending on the primary exchanger is the residual head curve LEGEND V1 Pump speed I min V2 Pump speed II V3 Pump speed III max...

Страница 22: ...etermines the litres minute that can be drawn at t 30K PROTECTION FILTERS To prevent dirt from building up in the primary exchanger and damaging it it is advisable to clean the system thoroughly befor...

Страница 23: ...As there is no more space available whatincreases is the pressure notthe water volume If the pressure exceeds the safety valve activation point the valve opens and discharges water from the system Th...

Страница 24: ...l All the elements are contained in a stainless steel case where a diaphragm between them separates the combustion zone or flame side from the condensing zone or flue gas side The heat exchanger opera...

Страница 25: ...the water temperature is higher when flowing into the combustion chamber This decreases fuel consumption and prevents the formation of condensate which would drip onto the burner and damage it After...

Страница 26: ...every two years during maintenance and a flue gas and condensate sealing plait Overheating is prevented by ceramic fibre insulation The outer case of the burner has small round and oval holes to prev...

Страница 27: ...s valve connection pipe that depends on the air flow rate When the gas valve is powered on there will be a negative pressure at the outlet and the valve will regulate the gas flow rate based on this v...

Страница 28: ...aximum output DHW 199 Hz 192 Hz 201 Hz 198 Hz 210 Hz 205 Hz P5 Fan speed at minimum output DHW and heating 42 Hz 42 Hz 40 Hz 40 Hz 43 Hz 43 Hz P6 Fan speed at ignition output 58 Hz 58 Hz 60 Hz 60 Hz 7...

Страница 29: ...z SV1 operating current 40 mA SV2 operating current 12 mA SV1 supply pin 3 4 SV2 supply pin 3 1 Max operating pressure 60 mbar Operating temperature 10 C to 60 C Coils Safety coil interchangeability Y...

Страница 30: ...hen the fan is activated a vacuum develops inside the combustion chamber and the valve thanks to this pressure port decreases the nozzle pressure to offset any excess gas supplied due to the vacuum At...

Страница 31: ...impeller mixes the air and gas and conveys the mixture along a pipe to the burner The mixer is connected to the fan suction inlet and features a mechanism that increases or decreases the air and gas f...

Страница 32: ...nsate drain trap CONDENSATE DRAIN TRAP This element collects and conveys the condensate produced by the primary exchanger into the drain It is shaped to prevent the combustion gases from entering into...

Страница 33: ...the DHW button to operate the boiler at maximum output until the display shows the exact number of fan Hz at minimum speed 42 Hz 24 kW 40 Hz 28 kW and 43 Hz 32 kW Turn the minimum output screw C clock...

Страница 34: ...maximum burner output established by parameter P4 The display shows the current fan rpm number of rotations the flow temperature the flame symbol which is present when the burner is active the system...

Страница 35: ...rgised by parameter P17 1 remote relay or P17 3 heating relay IMPORTANT If zone boards are connected they will also dissipate heat adjusting the mixer valve and activating the zone pump to maintain th...

Страница 36: ...e replaced to guarantee a perfect seal Refit all components taking care not to damage the seals Power on the boiler and open the gas cock Call up the parameter setting page and enter as the P0 paramet...

Страница 37: ...ntrol In the latter case you can only view modify up to parameter 29 Changing the TECHNICAL parameters Press the reset and boiler status buttons simultaneously for three seconds to enter parameter pro...

Страница 38: ...nce after parameter 99 Cod means you have to enter a code default139 using ofthe heating buttons press OK to confirm each number When the correct access code has been entered the display will show wat...

Страница 39: ...ter 2 H2O pressure switch only P3 Boiler type selection 1 3 1 1 combi instantaneous 2 heating only 3 with water heater P4 Burner max output fan speed Da P5 min 250 Hz 199 199 24 kW natural gas 201 28...

Страница 40: ...3 s 0 P16 Ambient OT thermostat reading delay 0 199 s 0 P17 Multifunction relay setting 0 3 0 0 shutdown and fault 1 TA1 remote relay 2 solar relay 3 TA2 request Solar parameters with P17 2 or with ad...

Страница 41: ...ed P37 Current flow temperature display for zone 3 Visible with two zone boardsconnected P39 Flow temperature set point display for zone 4 Visible with three zone boardsconnected P40 Current flow temp...

Страница 42: ...e 15 35 C 20 C P63 Zone 2 set point selection fictitious temp 0 3 0 6 Can be set with a zone board connected Without external probe Fixed flow set point P66 Zone 3 curve selection 15 35 C 20 C Can be...

Страница 43: ...ard function 1 energised relay P92 Solar board valve relay override 0 2 0 0 standard function 1 opening override 2 closure override List of SUPER TECHNICAL parameters code 139 Parameter Range Default...

Страница 44: ...multifunction relay Provision for additional board connection Temperature probe check Brushless fan check Flow anti freeze function Plate DWH anti freeze function Anti shutdown function Pump post cir...

Страница 45: ...value 0 according to the different plant types These are the two possible configurations P28 0 boiler pump three way valve the DHW system is managed using both a pump and a three way valve The three...

Страница 46: ...c flame control closes the gas valve and repeats the ignition sequence up to 5 times with a 5 second chamber cleaning cycle after each attempt If no flame is detected in the TS safety time during the...

Страница 47: ...ne KC con P3 1 Following a request in plate DHW mode with the boiler on DHW or DHW HEATING the automatic flame control section starts the burner ignition sequence if the water temperature read by the...

Страница 48: ...a value of 85 C and it does not switch on again until 80 C is reached and only with the request still active During operation in the DHW mode the pump is in operation and the electric diverting valve...

Страница 49: ...al to ignition power P6 and during subsequent stages this power corresponds to the flame modulation value which with a PID type action is necessary to reach and maintain the delivery modulation temper...

Страница 50: ...provided to the burner is equal to the one set for parameter P7 which corresponds to a percentage of the boiler maximum power set for parameter P4 TEMPERATURE RANGE PRE SELECTION With parameter P10 in...

Страница 51: ...if the boiler is switched to OFF or DHW ONLY mode During operation in heating mode when there is a DHW request this takes priority and interrupts the current function Heating modulation temperature s...

Страница 52: ...erature set The thermoregulation curve is selected via parameter P10 0 to 3 and the fictitious ambient temperature via the heating buttons The control board autonomously recognises the presence of the...

Страница 53: ...P10 Press OK to confirm that you want to modify the value of the parameter The spanner symbol means that you can do this with the heating buttons Press OK info to confirm and press Reset to exit the p...

Страница 54: ...ambient temperature from 20 C to 25 C Choosing a curve can either be performed mentally or using a mathematical formula In either case it is necessary to check the temperature variations and choose t...

Страница 55: ...reased ambient temperature set a curve with less slope i e lower If a reduction in the outside temperature corresponds to a reduced ambient temperature set a curve with more slope i e higher If the am...

Страница 56: ...ommunication fails continuous attempts will be made for 1 minutes to restore it after which the board will resume operation in local mode until connection is restored If this happens the system tempor...

Страница 57: ...1 Electrical connections P17 3 Ambient thermostat reference The relay is energised with each request from ambient thermostat TA2 Electrical connections REMOTE CONTROL AMBIENT THERMOSTAT SOLENOID VALVE...

Страница 58: ...SBS probe is lower than the DHW set pointtemperature less 2 C It is powered on solar only when the temperature ofthe solar tank heater probe reaches the DHW set point set on the boiler or if the prob...

Страница 59: ...d the other in the bottom of the solar tank heater SBS Tank heater load conditions pump ON The tank heater temperature is set via parameter P19 to a value between 10 C and 90 C default 60 C The PS sol...

Страница 60: ...ollectors from stagnating for a long time which may generate high thermal stress For this reason the PS solar pump reactivates according to the following logic Tscs P22 10 C and Tsbs 93 C and Tscs P22...

Страница 61: ...active If the solar tank heater probe SBS or the solar collector probe SCS are faulty the solar pumps immediately switches off and the boiler board interface and remote control if connected displaythe...

Страница 62: ...ase of difficulty in transmitting data between the boards due to very long connection lines or electromagnetic interferences This jumper must only be left on the last board in cascade all the others i...

Страница 63: ...nd 4 are activated directly by the ambient thermostat connected to the relevant zone board Zones 3 and 4 cannotsupportcontrol by the safety flow line thermostat TSM which mustbe mounted in series on t...

Страница 64: ...int flow value without an external probe according to the selected range Parameter P32 displays the calculated flow temperature and parameter P31 the current value read by the boiler probe Zone 2 Para...

Страница 65: ...e The flow set point requested by the mixed zones is equal to the value calculated by the thermoregulation plus the value of parameter P75 default 5 C When DHW is withdrawn any heat requests are inter...

Страница 66: ...event of a failure of the SVS solar valve probe the diverting valve activates in the solar mode only and tank heater takes place following the same logic taking into consideration the SBS solar tank h...

Страница 67: ...k heater to the set point value by dissipating any excessive heat in the tank heater on the solar collector This only occurs if the solar tank heater has exceeded the set point temperature following a...

Страница 68: ...m 25 C B3435 Max 3 metres Solar probe PT1000 Max 100 metres Correct flow probe operating range 5 C to 120 C Correct solar probe operating range 40 C to 290 C Mixing valve deactivation range due to set...

Страница 69: ...nly if before the fault there was a request during DHW or anti freeze operation With P17 1 and P17 3 multifunction relay the relay remains energised until the fault is removed if there was a requestfo...

Страница 70: ...ures Probe calibration 1k Ohm for 0 C Temperature C Resistance Temperature C Resistance 20 922 60 1232 10 961 70 1270 0 1000 80 1309 10 1039 90 1347 20 1078 100 1385 30 1118 110 1422 40 1155 120 1460...

Страница 71: ...ated with consequent shutdown The faulty fan signal is interrupted when the speed parameters acquired by the HALL sensor fall within the pre set limits FLOW ANTI FREEZE FUNCTION The flow NTC probe mea...

Страница 72: ...1 or P17 3 is in the home position If flame control shuts down and the burner cannot be ignited the anti freeze function activates pump circulation The flow anti freeze function is enabled with all op...

Страница 73: ...ze chimney sweep mode will have priority and the ventilation function in progress will be forced to end immediately The post ventilation function is also activated when the water temperature read by t...

Страница 74: ...temperature limit on the heat exchanger so as to reduce the flue gas temperature During power limitation the E88 error is not displayed on the boiler it is only recorded in the board fault memory supe...

Страница 75: ...0 C In the event of an E02 shutdown The fan performs a post ventilation cycle at the ignition speed P3 900 rpm until the flow temperature falls below 90 C The pump performs a post circulation cycle wi...

Страница 76: ...st ventilation cycle and the boiler pump enables its post circulation function with diverting valve in the position relevant to the type of request The multifunction relay performs a post circulation...

Страница 77: ...nk heater 550 3 5 sec E81 500 2 E82 450 1 E83 The burner is completely switched off 0 min ON if in the worst case 300 or 450 l h the flow and return temperature derivative values are below 0 5 C secon...

Страница 78: ...The plastic front of the interface board must not be disassembled The spare part is supplied ready assembled Characteristics of the main board Operating voltage 170V AC to 300V AC Power supply freque...

Страница 79: ...thermostat 2 3 4 ambient thermostat 1 or remote control 5 6 external probe 7 8 sonda bollitore caldaia SBC per versione KR 10K Ohm a 25 C B3435 L 3m 9 10 solar tank heater probe SBS 11 12 solar collec...

Страница 80: ...s 10k Ohm FL flow switch MVD motorised diverting valve SS NTC DHW probe 10k Ohm VG gas valve SRT NTC return probe 10k Ohm P boiler circulation pump TF flue gas thermostat V fan SM1 NTC heating probe1...

Страница 81: ...ned for condensate collection and drainage If this is not possible condensate collection and drain conveying systems must be provided condensate stagnation areas 7 1 100 60 CO AXIAL AIR VENT DUCTS Typ...

Страница 82: ...________________________________________________________________________________ 82 AST 14 C 257 00 Dimensions for connecting flue gas exhaust pipes to co axial ducts Gasket Closing cap...

Страница 83: ...on 0 5 m 0 5 90 elbow 1 0 45 elbow 0 5 Roof vent terminal 1 5 Wall terminal kit 90 elbow 1 5 7 3 80 80 SPLIT AIR VENT DUCTS Maximum pipe length Type of installation C43 C53 C83 TYPE OF INSTALLATION PI...

Страница 84: ...kW 32 kW 24 kW 28 kW 32 kW Wall vent terminal 5 5 5 1m extension 1 1 0 5m extension 0 5 0 5 90 elbow 1 1 5 1 1 5 45 elbow 0 5 1 0 5 1 80mm tee with condensate drain 1 80mm tee 1 1 0 45m telescopic ex...

Страница 85: ...L KC 24 KR 24 KC 28 KR 28 KC 32 KR 32 Air intake Flue gas vent Max L m Max L m Max L m B23 B53 polypropylene 23 23 20 The minimum discharge pipelength must be one metre Table of load losses in 60 duct...

Страница 86: ...____________________________________________ _____________________________________________________ _____________________________________________________ _______________________________________________...

Страница 87: ...on electrode cable interrupted Reconnect or replace the cable Flame detectionelectrode faulty Replace the electrode Electronic board does not detect flame it is faulty Replace the board Ignition heat...

Страница 88: ...onnectedor short circuited Reconnect or replace the probe Boiler is not supplying DHW DHW flow meter not working Insufficient system pressure or flow rate Check the system Check the DHW flow meter fil...

Страница 89: ...ank heater probe SBS connected to the boiler board Probe disconnected or faulty Reconnect the probe or replace it if necessary The probe detects a value outside the permitted range Check the probe is...

Страница 90: ...flashing Hydraulic configuration not allowed The main board does not recognise the probes connected for correct operation Check the value of board configuration parameter P3 Boiler shutdown message f...

Страница 91: ...ulty Replace the faulty probe Flow or return probe disconnected from the pipe Reconnect the probe Air inside the system Bleed the system Faulty or clogged bypass Check the bypass The memory of the sup...

Страница 92: ...shing Maximum flue gas threshold exceeded Primary exchanger clogging Clean or replace the primary exchanger Flue gas side clogging of primary exchanger and flue gas duct Check for obstructions inside...

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Страница 96: ...FONDITAL GROUP Formentera Condensing Technic Manual Customer Service Department 1st edition February 2013 AST 14 C 257 00...

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