Daikin D2CND028A1AA, Servicing Manual

Page 1: ...Servicing manual Wall mounted condensing boiler D2CND028A1AA D2CND028A4AA D2CND035A1AA D2CND035A4AA D2TND028A4AA D2TND035A4AA English Servicing manual Wall mounted condensing boiler...

Page 2: ...A1AA D2CND028A4AA D2CND035A1AA D2CND035A4AA D2TND028A4AA D2TND035A4AA Wall mounted condensing boiler ESIE17 09 2017 11 Servicing manual 2 LOG Version Code Description Date ESIE17 09 Document release 1...

Page 3: ...Gas air ratio No need to adjust 24 6 4 To commission the unit 24 6 4 1 To commission the central heating 24 6 4 2 To commission the central heating capacity setting 24 6 4 3 To commission the domesti...

Page 4: ...which is composed of an LCD screen push buttons and two dials and which is located on the front cover of the appliance The appliance is equipped with several safety systems to pro tect it against dang...

Page 5: ...ty system This function protects the appliance and heating installation from frost damages Itiscontrolledbytheflowtemperaturesensorwhichis located at the outlet of the main heat exchanger This protect...

Page 6: ...ode 15 Ionization electrode 16 High limit thermostat 17 Fan 18 Return temperature sensor 19 Silencer 20 Automatic air vent pump 21 Water pressure sensor 22 By pass 23 Boiler pump 24 Domestic hot water...

Page 7: ...mperature min max G20 C 57 5 76 4 57 5 81 7 57 5 76 4 57 5 81 7 Combustion products temperature min max G31 C 57 5 74 5 57 2 80 2 57 5 74 5 57 2 80 2 CO2 Emission at nominal and minimum heat input G20...

Page 8: ...14_FLOW X4 15_OWC X4 16_OWC X3 1_PwmWh X3 2_PwmB1 X3 3_ReWhSw X3 4_Gnd X3 5_5v X2 8_LP1 X2 1_SOLs X2 2_SOL X2 3_RTs X2 4_RT X2 5_NPSRT X2 6_LPSRT X2 7_NP1 X5 X4 X3 X2 X1 X1 1_NP X1 2_LP X1 3_NI X1 4_...

Page 9: ...Number 30 32 24 26 14 18 3 3 Spare parts To ensure long lasting operation of the appliance always use original spare parts Spare parts must be ordered from spare parts catalog by specifying the relat...

Page 10: ...omestic Hot Water Circuit Isolate the appliance from power supply and closedown the gas valve Close all the isolating valves on the central heating circuit Open the drain valve 1 and drain the central...

Page 11: ...iance Isolate the appliance from power supply and closedown the gas valve Undo M5 screw at the figure 1 Remove the assembly clips of front cover 2 Remove the front cover by pulling up 3 Undo 2 sheet s...

Page 12: ...p wire connectors by pushing pawls help of flat screwdriver 2 Disconnect the wire connector of flow sensor it is used only C model 3 and water pressure sensor 4 Disconnect the wire connector of 3 way...

Page 13: ...t s housing and disconnect the sensor 13 It is used only C model Take out cable connections of fan manually 14 Re assemble in reverse order Be careful all electrical cables during the removal of cable...

Page 14: ...ove the gas supply pipe from the gas valve and brass nipple by using wrench 1 Unscrew the 2xM5 screws that connect gas manifold and burner hood 2 Seperate the gas manifold from the burner hood clip an...

Page 15: ...sensors and high limit thermostat refer to Section 4 3 Take out the syphon parts by turning manually 1 Unscrew the screws that connect hermetic cabinet and right cover 2 Remove the flow and return pi...

Page 16: ...o the screws of the electrodes from the heat exchang er and take out the electrodes 11 Take out the air vent which locates on the main heat ex changer by using wrench 12 Undo 2xM6 screw that connects...

Page 17: ...motor from return hydroblock group by sliding it to the left 1 Disconnect 3 way valve motor s stepper motor wire connector with the help of flat screwdriver 2 Undo the 3 screws that connects to herme...

Page 18: ...DHW flow CH flow installation pipes from the boiler by using wrench refer to Section 4 1 Open the appliance refer to Section 4 2 Take out the expansion vessel refer to Section 4 10 Remove the fasteni...

Page 19: ...Isolate the appliance from power supply and closedown the gas valve Drain the water from the boiler refer to Section 4 1 Open the appliance refer to Section 4 2 Remove the left cover of the boiler uns...

Page 20: ...pawls refer to Section 4 5 Undo the screw between flow hydroblock and plate heat exchanger 1 Undo the screw that between return group and plate heat exchanger 1 Remove the plate heat exchanger from th...

Page 21: ...Section 4 10 Unscrew the 3 screws that connect PCB and control panel 5 Remove the buttons from back of the control panel 6 Remove Daikin eye s 2 screws 7 Disconnect Daikin eye s wire connector 8 Isola...

Page 22: ...n the pump and heat exchanger are opened Vent the air from the installation with the manual air vent screws on the radiators Make sure screws are tightened after venting If after the purge the pressur...

Page 23: ...optionals Below you can see the Cable glands placement Note Boiler Sensor is used only T model Note Illustration of plugging of connector to X1M terminal Holes on the bottom sheet that are reserved fo...

Page 24: ...eat demand 5 tst 100 caption will appear on the screen This means boiler is operating at nominal capacity Check nominal ca pacity operation 6 To quit sweeper mode again press Cancel and Menu buttons t...

Page 25: ...ng or domestic hot water the ring flashes to its maximum then constantly keeps glowing during burner operation with blue LED 7 1 7 Error The Daikin eye will go into error mode when a warning lockout o...

Page 26: ...ature System Pressure at stand by mode 7 3 2 Selecting Operation Mode The operation mode can be changed by pushing the Mode button 7 4 Description of the Operation Modes 7 4 1 Stand by Mode In stand b...

Page 27: ...iler No room ther mostat or outdoor sensor are connected The central heating water temperature setpoint is displayed The setpoint can be adjusted with the left dial The icon is shown on the screen whe...

Page 28: ...hours Note Independent of personal use pattern Comfort mode preheating function could be adjusted to operate continuously from the user settings For example When the domestic hot water DHW mode is ac...

Page 29: ...e A10 3 Release control burner is on operation phase A10 4 Post purge phase To go into the Info menu press the Enter Button when the icon is displayed on the menu level 1 screen Select an index betwee...

Page 30: ...l room tem perature setpoint when there is a heat demand U06 When On Off Room thermostat and outdoor sensor are both connected this parameter value is the virtual room tem perature setpoint when there...

Page 31: ...Opentherm thermostat is switched off no heat demand boiler is either switched off 0 or operates in redu ction mode 1 P01 Weather compensation building condition parameter It is used in flow setpoint c...

Page 32: ...de Visible only for storage tank type models P15 Max temperature that can be adjusted by left dial when setting central heating flow temperature P16 This parameter is a read only parameter which shows...

Page 33: ...5 kW Tflow return 10 C 10 circuits and lenght of the each circuit is 80 metres without an additional pump When the boiler is connected to an UFH system the following parameter changes must certainly b...

Page 34: ...ces starting gas air ratio will be far from average value which may also result in ignition problems delayed or loud ignition If such problems are present C02 parameter must be optimized first If C02...

Page 35: ...asing may cause loud ignition C03 This parameter is used to increase maximum allowable flue duct length by increasing fan speed Adjust this parameter to 3 to use longer flue ducts for C13x and C33x ty...

Page 36: ...adjustment set the pass word as 043 c For 100 calibration and C12 C13 adjustment set the password as 046 Press Enter button The boiler will start calibration accord ing to above mentioned input value...

Page 37: ...tant and set to 45 C 2 Pump runs at 100 capacity Function is active for 10 minutes of burner operation After function is ended boiler operates according to central heating setpoint adjusted by the cus...

Page 38: ...CB can be changed at field without need to change the PCB itself The BCC con tains all control parameters and safety parameters 9 1 1 Spare Part PCB PBC s that will be used as spare part all have 24 k...

Page 39: ...69 error code will still be shown on display Resetting the boiler will remove the error 9 1 4 Error during Parameter transfer If an error occurs during the Parameter transfer or if parameter update is...

Page 40: ...described in this manual 12 66 Ion base val ue exceeds lower factory limit Reset the boiler Make a manuel calibration Check the ionization elecktrode it s cable connection and it s earth cable Replac...

Page 41: ...s not as desired ERROR CODE REASON ELIMINATION 81 01 Flow tem perature sensor fault Check continuity between the sen sor and PCB replace wire harness if necessary Check flue tempera ture sensor resist...

Page 42: ...it of the building should be checked and voltage stabiliser should be used for smooth operation U4 65 Opentherm RT connection is defective Boiler operates as if Opentherm room thermostat not connected...

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Page 44: ...TMA S STEMLER SAN T C A K kbakkalk y Mah Kay da Cad No 1 Kat 21 22 34750 Ata ehir STANBUL T RK YE Tel 0216 453 27 00 Faks 0216 671 06 00 a r Merkezi 444 999 0 Web www daikin com tr ESIE17 09 2017 11 C...