Daikin D2CND028A1AA User manual
Servicing manual
Wall-mounted condensing boiler
D2CND028A1AA
D2CND028A4AA
D2CND035A1AA
D2CND035A4AA
D2TND028A4AA
D2TND035A4AA
English
Servicing manual
Wall-mounted condensing boiler
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
2
LOG
Date
ESIE17-09 Document release 1.11.2017
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
3
Table of Contents
Table of Contents
1 GENERAL INFORMATIONS 4
1.1 Symbols on the package...................................4
...............................................4
2 APPLIANCE INFORMATIONS 4
...................4
..............................................................5
........6
........................................7
.......................................................8
3 MAINTENANCE 9
annually .....................................................................9
3.2 Important notes .....................................................9
3.3 Spare parts...............................................................9
.......9
............................... 9
...............10
4 PART REPLACEMENT 10
...........................................10
.....................................10
..........................10
..................................... 11
4.3 Cable Group Removal ......................................12
4.4 Fan Group Removal...........................................14
.....15
...............................16
..................................................16
4.6 Return Hydroblock( Pump Group)
Removal...................................................................17
4.6.1 3 Way Valve Motor (Stepper Motor)
Removal .................................................................17
....................18
....18
4.8 Syphon Part Removal.......................................19
...........................19
4.10 Plate Heat Exchanger Removal
(Only C- Model) ....................................................20
........................................................20
.................................21
5 INSTALLATION INFORMATIONS 22
......................22
Type of Gas............................................................22
...........23
6 COMMISSIONING 23
..............................23
..................24
...................................24
............24
...................................................24
...24
7 OPERATION 25
.......................................................25
..26
..............26
................................................................26
.........26
...............27
..............27
......................28
...................................28
......................................................28
...................................................29
.........................................30
Parameters.............................................................30
...................................31
Parameters.............................................................31
.................32
parameters (P)......................................................32
..........................................33
................................33
..............33
...................................33
Temperature ..........................................................34
...34
............................35
................................36
7.10.9 Error Parameters (E) .........................................36
......................................................37
8 SAFETY OPERATION
37
................................................................37
..........37
......38
(Delta-T control)...................................................38
.................................38
9 OPTIONAL PARTS 38
....................................38
....................................................38
...........................38
........................................39
..................39
....39
40
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
4
on the box.
of each other.
Meaning of warnings and symbols used in this document.
-
•
•
• -
-
-
-
-
ranty becomes void.
WARNING
-
-
This is controlled by the safety limiting thermostat. It is located
Indicates a situation that results in death or
serious injury.
DANGER
Indicates a situation that could result in death or
serious injury.
WARNING
Indicates a situation that could result in death or
serious injury.
-
NOTICE
INFORMATION
DANGER
-
-
dards and regulations. Incorrect installation of this
-
WARNING
least 1 metre away from the boiler.
DANGER
WARNING
1 GENERAL INFORMATIONS
1.1 Symbols on the package
2 APPLIANCE INFORMATIONS
1 General informations
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
5
-
In cases where the
-
-
below 0.6 bar for any reason.
This is controlled by the ionisa-
the boiler and heating installation.
There are two air vents; one on the
the air inside the installation and heating circuit to avoid air
This function
covered by the warranty.
This is controlled by the control
A fuse
value for an excessive time.
-
-
tion in the control unit software.
Ø
Top View
784.5
695.5
294.4
Front View Right Side View
90 65 65 68 65
37.5
125
132
180
Bottom View of Model D2CND028A1AA D2CND035A1AA
90 65 65 68 65
37.5
125
132
180
90 30 100 103 30
125.7
72
132
180
182.5
Bottom View of Model D2CND028A4AA D2CND035A4AA
Bottom View of Models D2TND028A4AA, D2TND035A4AA
2 Applience information
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
6
Structure and components of models
D2CND028A1AA, D2CND028A4AA,D2CND035A1AA,
D2CND035A4AA
1
2
3
4
5
6
7
8
11
12
13
14
18
19
20
21
22
23
9
10
1
5
1
6
1
7
24
26
25
Key
4 Gas valve
5 Heat exchanger
11 Ignition transformer
13 Burnerhood
14 Ignition electrode
15 Ionization electrode
16 High limit thermostat
17 Fan
19 Silencer
Structure and components of models
D2TND028A4AA, D2TND035A4AA
1
2
3
4
5
6
9
10
11
12
16
17
18
19
20
21
7
8
13
14
15
D2TND035A4AA
Key
4 Gas valve
5 Heat exchanger
9 Ignition transformer
11 Burnerhood
12 Ignition electrode
13 Ionization electrode
14 High limit thermostat
15 Fan
17 Silencer
2 Appliance information
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
7
2 Appliance information
D2CND028A*AA D2CND035A*AA D2TND028A4AA D2TND035A4AA
4.8~27.0 4.8~34.0 4.8~27.0 4.8~34.0
4.6~26.3 4.6~33.2 4.6~26.3 4.6~33.2
5.2~28.2 5.2~35.0 5.2~28.2 5.2~35.0
% 108.9 108.7 108.9 108.7
Central Heating Circuit
bar
Domestic Hot Water Circuit
14 16 -
12 14 -
bar -
- instantaneous
General
bar 1
l 10
W 92 112 92 112
W 2.7
-
Boiler Weight 37 35.5
mm 695 x 440 x 295
Flue outlet diameter mm
D2CND028A*AA D2CND035A*AA D2TND028A4AA D2TND035A4AA
-
mbar
mbar
mbar
mbar
2 % 8.8±0.8
2 %
- 6
Symbol D2CND028A*AA D2CND035A*AA D2TND028A4AA D2TND035A4AA
Model - - D2TND028 D2TND035
- - YES YES YES YES
- -
B1 boiler - -
- -
- - YES YES YES YES
- -
26 33 26 33
26.3 33.2 26.3 33.2
8.8 11.1 8.8 11.1
% 93
% 87.8 87.9 87.8 87.9
% 98.1 97.9 98.1 97.9
Auxiliary electricity consumption
At full load elmax 0.0356 0.0547 0.0356 0.0547
elmin 0.0098 0.0111 0.0098 0.0111
In standby mode 0.0026
Other items
Standby heat loss 0.0651
-
GJ 48 58 48 58
LWA dB 49 52 49 52
Emissions of nitrogen oxides 36 35 36 35
- - -
Symbol D2CND028A*AA D2CND035A*AA D2TND028A4AA D2TND035A4AA
0.153 0.204 -
33 44 -
Water heating energy efficiency % 84 83 -
Water heating energy efficiency class - - A -
23.25 30.26 -
GJ 18 23 -
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
8
: Wiring depending
on model
YOU MUST TURN POWER
SUPPLY OFF WHEN YOU
CHECK THE UNIT
TURN THE CIRCUIT BREAKER
OFF AND WAIT FOR 10
MINUTES BEFORE SERVICE
: Several wiring
possibilities
DANGER
ELECTRICAL
SHOCK
WARNING
6
5
K2
4
3
2
NTC1
8765432
NTC2 NTC3 NTC4
1
1
X1M
X1M
1
1
X1M
X2M
1~ M
PE
NL
X1M
X8_BCC
X8
X9.5_C24V
X9.4_CGND
X9.3_C5v
X9.2_CRx
X9.1_CTx
X10.5_PC24V
X10.4_PCGND
X10.3_PC5V
X10.2_PCRx
X10.1_PCTx
X11.14_TMAXs
X11.13_V2-
X11.12_V2+
X11.11_V1-
X11.10_V1+
X11.9_TMAX
X11.8_FGDN
X11.7_Fn
X11.6_FPWM
X11.5_PNGD
X11.4_PFB
X11.3_PPWM
X11.2_OTH+
X11.1_OTH-
X12.4_Reserve2
X12.3_Reserve2
X12.2_SolNTC+
X12.1_SolNTC-
X13.6_NO.1_A1
X13.5_NO.3_A3
X13.4_NO.4_B3
X13.3_NO.6_B1
X13.2_NO.5_B2_24V
X13.1_NO.2_A2_24V
X10X11X12
X13
X8.1_GND
X8.2_SCL
X8.3_SDA
X8.4_5V
21
PCB1
LED B
LED A
8
8
2xRJ11
RJ45
V2V1
21
P1
F1 IT1 NTC5
IE1
WPS1
PCB2
HE1
Ext1
PCB3
Ext2
GV1
Ext3
3WV1
X5.2_IonPE
X5.1_IonSig
X4.1_TU_S
X4.2_TU_G
X4.3_TU_5
X4.4_WPS_S
X4.5_WPS_G
X4.6_WPS_5
X4.7_DHW-
X4.8_DHW+
X4.9_FLUE-
X4.10_FLUE+
X4.11_RET-
X4.12_RET+
X4.13_FLOW-
X4.14_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
X2X1
X1.1_NP
X1.2_LP
X1.3_NI
X1.4_LI
X1.5_NF
X1.6_LF
X1.7_N
X1.8_L
1
: PCB
: Switch box
: Option
: Field supply
: Wire number 15
: Earth wiring
: Main terminal
15
X4M
PE
X2M
Ext4
N
L
8
1
8
1
K1
DHW
FS1
N
L
Ext5
X9
NTC6
PART NO. CONNECTOR NO.
DESCRIPTION
PCB 1
-MAIN PCB
PCB 2
X3 DAIKIN EYE PCB
PCB 3
X9 LAN (variCAN) ADAPTER
P1 X2-X11 BOILER PUMP
F1 X1-X11 FAN
GV1 X11 GAS VALVE
IT1 X1 IGNITION TRANSFORMER
3WV1
X13
CH/DHW DIVERTER VALVE STEPPER MOTOR
WPS1
X4 WATER PRESSURE SENSOR
DHW FSI
X4 DHW FLOW SENSOR
IE1 X5 IONISATION INPUT
K1 X2M SOLAR STOP CONTACT
K2 X2M ON/OFF ROOM THERMOSTAT
HE1 X11 OVERHEAT THERMOSTAT
NTC1
X1M
OUTSIDE TEMPERATURE SENSOR
NTC2
X4 FLOW TEMPERATURE SENSOR
NTC3
X4 RETURN TEMPERATURE SENSOR
NTC4
X4 FLUE TEMPERATURE SENSOR
NTC5
X4 DHW TEMPERATURE SENSOR
NTC6
X1M
SOLAR DHW TEMPERATURE SENSOR
Ext1
X8 BCC (BOILER CHIP CARD)
Ext2
X10 PC PRODUCTION INTERFACE
Ext3
X1M OPENTHERM ROOM THERMOSTAT
Ext4
X2M
EXTERNAL POWER OUTPUT (230 VAC)
Ext5
X2M RESERVED, NOT IN USE
X1M X4-X11-X12
LOW VOLTAGE TERMINAL STRIP
X2M X1-X2
HIGH VOLTAGE TERMINAL STRIP
2 Appliance information
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
9
3 Maintenance
Any maintenance and servicing operation must be
carried out by a competent qualified person.
Annual maintenance cycle is strongly recommended to
-
ble. This will avoid malfunctions during the heating season.
Always observe the following instructions during mainte-
•
and wet hands.
•
•
•
•
•
its contents.
•
•
•
3.2 Important notes
-
•
•
•
•
•
•
•
3.3 Spare parts
ones.
•
•
•
of condensate around.
•
•
-
B
B
3 MAINTENANCE
Let the burner to cool for reasonably long time be-
WARNING
a
b
c
d
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
10
4 Part replacement
10 mm
180 mm
255 mm
500 mm
Recommended clearances for easy servicing
50 mm
1500 mm
* 180 mm-
b = 270 mm
boiler
b = 270 mm
b = 320 mm
•
the gas valve.
•
circuit.
•
• There is another way to drain the central heating water
DHW isolating valve with the central heating isolating
•
may dwell in heat exchanger.
INFORMATION
f
a
b
c
e
d d
a
(1)
d
b
a
c
f
e
4 PART REPLACEMENT
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
11
(4)
a
•
the gas valve.
•
•
•
•
•
4 Part replacement
(1)
(2)
(3)
a
(5)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
12
(2)
(3)
(4)
4.3 Cable Group Removal
•
the gas valve.
•
•
• -
•
•
•
•
• Disconnect the wire connector of 3 way valve (refer to
• Dismantle the ignition electrode and its earth cable from
•
•
•
•
•
4 Part replacement
(1)
(7)
(6)
(5)
(8) (10)
(9)
(8)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
13
• • -
•
•
• Re-assemble in reverse order (Be careful all electrical
•
NOTICE
4 Part replacement
(11) (14)
(13)
(12)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
14
4.4 Fan Group Removal
•
the gas valve.
•
• Disconnect the fan and gas valve wire connectors (refer
•
•
•
•
•
•
• Re-assemble in reverse order.
•
4 Part replacement
(1)
(3)
(2)
(4)
(6
)
(7)
(5)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
15
•
the gas valve.
•
•
• Disconnect the electrical leads of electrodes (refer to
•
•
•
•
•
•
•
•
•
•
-
rectly during the re-assemble.
4 Part replacement
(1)
(5)
(3)
(4)
(6)
(7)
(7)
(7)
a
(8)
(2)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
16
• Re-assemble in reverse order.
• Remove the screw holding the hermetic cabinet with
•
• -
• -
exchanger inside.
•
•
•
• -
er.
• -
• -
•
•
• -
•
•
NOTICE
4 Part replacement
(11)
(18)
(12)
(13)
(14)
(15)
(16)
(17)
(19)
(9)
(10)
(16) (16)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
17
4.6 Return Hydroblock( Pump Group) Removal
•
•
•
•
•
4.6.1 3 Way Valve Motor (Stepper Motor) Removal
-
•
•
•
•
•
•
•
•
•
•
out.
• Re-assemble in reverse order.
4 Part replacement
(2) (1)
(4)
(7)
(8)
(5)
(6)
(3)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
18
•
the gas valve.
•
•
•
•
•
•
•
•
•
•
•
•
out.
• Re-assemble in reverse order.
•
the gas valve.
•
•
•
•
•
•
•
•
• -
•
•
•
•
the gas valve.
•
•
•
•
• Re-assemble in reverse order.
•
4.6.2 Water Pressure Sensor Removal
-
4 Part replacement
(10)
(7)
(6)
(4) (5)
(3)
(1) (2)
B
(9)
(8)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
19
4.8 Syphon Part Removal
•
the gas valve.
•
•
•
•
the gas valve.
•
•
• Remove the left cover of the boiler ( unscrew the screws
•
• -
•
mounted correctly.
INFORMATION
4 Part replacement
B
(1,2)
(4)
(3)
• Re-assemble in reverse order.
(2)
(1)
D2CND028A1AA + D2CND028A4AA + D2CND035A1AA +
D2CND035A4AA + D2TND028A4AA + D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
20
•
valve.
•
•
•
• -
•
•
•
•
•
•
4.10 Plate Heat Exchanger Removal (Only C- Model)
•
the gas valve.
•
•
•
•
•
•
4 Part replacement
(4)
(3)
(1)
(2)
• Re-assemble in reverse order.
(1)
(2)
(2)
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