Daikin D2CND024A1AA - Servicing Manual

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Servicing manual

Wall-mounted condensing boiler

D2CND024A1AA

D2CND024A4AA

D2TND012A4AA

D2TND018A4AA

D2TND024A4AA

English

Servicing manual

Wall-mounted condensing boiler

Main Page

Table of Contents3
GENERAL INFORMATIONS Symbols on the Package4
Safety Instructions4
Appliance Informations4
Safety Systems of the Appliance4
Dimensions5
Appliance Structure and Components6
Technical Specification7
Wiring Diagram8
Maintenance9
Maintenance Work to be Carried out Annually9
Important Notes9
Spare Parts9
Checking the Connections and Piping9
Condensate Trap Cleaning9
Minimum Installation Clearances10
PART REPLACEMENT Draining the Boiler10
Central Heating Circuit10
Domestic Hot Water Circuit10
Opening the Appliance11
Cable Group Removal12
Fan Group Removal14
Heat Exchanger and Burner Removal15
Heat Exchanger Cleaning17
Burner Cleaning17
Return Hydroblock( Pump Group) Removal17
Way Valve Motor (Stepper Motor) Removal18
Flow Limiter Removal (Only Combi Models)19
Flow Hydroblock Replacement19
Domestic Hot Water (DHW) NTC Sensor Removal (Only Combi Models)19
Plate Heat Exchanger Removal (Only Combi Models)20
Expansion Vessel Removal21
PCB Removal22
Daikin Eye and Push Button Removal22
Terminal (X1M) Removal22
INSTALLATION INFORMATIONS Filling the System with Water23
Converting for Use with a Different Type of Gas23
Combining the Boiler with Options24
Commissioning24
To Fill the Condensate Trap24
Gas-Air Ratio: no Need to Adjust25
To Check for Gas Leakage25
To Commission the Unit25
To Commission the Central Heating25
To Commission the Central Heating Capacity Setting25
OPERATION User Interface26
Buttons and Dials26
LCD Screen26
Status Icons26
Daikin Eye26
Stand-By26
Flame26
Error26
Operating the Appliance27
Low Water Temperature Function27
Electronic Gas Adaptive System Calibration27
Basic Use27
Home Screen27
Selecting Operation Mode27
Description of the Operation Modes27
Stand-By Mode27
Summer Mode27
Winter Mode27
Changing Temperature Setpoints28
Central Heating Operation Modes28
Boiler Only28
Combination with Daikin Opentherm Room Thermostat (DOTT)28
Boiler + Outdoor Sensor (Weather Compensation)28
Central Heating (CH) ECO Mode29
Domestic Hot Water Operation29
Domestic Hot Water (DHW) Comfort Mode29
Boiler Frost Protection29
Error Handling29
Menu Functions30
Info Menu30
7.10.2 User Settings Menu31
7.10.2.1 Detailed Explanations Of User Parameters31
7.10.3 Installer Settings Menu32
Service Parameters (P)32
7.10.3.2 Detailed Explanations Of Service Parameters32
Entering Service Parameters (P)33
Select P00 To Reach Service Parameters (P)33
Dhw Solar Function34
7.10.4.1 Dhw Solar Function Logic34
Connecting the Appliance to Underfloor Heating (UFH) System34
7.10.6 Weather Compensation34
7.10.6.1 Weather Compensation Calculation35
7.10.6.2 Effect Of Heating Slope To Ch Temperature35
Scot Parameters (C) Safety Combustion Technology System35
7.10.7.1 Detailed Explanations Of C Parameters35
7.10.7.2 Entering Scot Parameters36
7.10.8 Manual Scot Calibration37
Error Parameters (E)37
7.10.10 Sweeper Mode38
Safety Operation Functions38
Low Water Temperature (LWT) Function38
Temperature Gradient Supervision38
Pump Control for By-Pass Opeariton39
Supervision Flow/Return Temp39
Optional Parts39
Boiler Chip Card (BCC)39
Spare Part PCB39
BCC Installation Procedure39
Plugging Wrong BCC40
Error During Parameter-Transfer40
Re-Installing an Already Installed BCC40
Troubleshooting41

Daikin D2CND024A1AA - Servicing Manual

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