DeDietrich AGC 25 Manual

Modulens EN
Gas fired floor-standing condensing boiler
AGC 10/15
AGC 15
AGC 25
AGC 35
Installation and
Service Manual
300026081-001-B

Declaration of conformity
The device complies with the standard type described in the EG
declaration of conformity. It was manufactured and commissioned in
accordance with European directives.
The original of the declaration of compliance is available from the
manufacturer.
C003655-A

Contents
1 Introduction ................................................................................................6
1.1 Symbols used .......................................................6
1.1.1 Symbols used in the manual ...................................6
1.1.2 Symbols used on the equipment .............................6
1.2 Abbreviations ........................................................7
1.3 General ..................................................................7
1.3.1 Manufacturer's liability .............................................7
1.3.2 Installer's liability .....................................................7
1.4 Homologations ......................................................8
1.4.1 Certifications ...........................................................8
1.4.2 Gas categories ........................................................8
1.4.3 Additional Directives ................................................8
1.4.4 Factory test .............................................................9
2Safety instructions and recommendations ............................................10
2.1 Safety instructions .............................................10
2.2 Recommendations ..............................................10
3 Technical description ..............................................................................12
3.1 General description ............................................12
3.2 Main parts ............................................................12
3.3 Operating principle .............................................13
3.3.1 Skeleton Diagrams ................................................13
3.3.2 Shunt pump ...........................................................15
3.3.3 Water flow rate ......................................................15
3.4 Technical specifications ....................................15
3.4.1 Sensor characteristics ...........................................16
4 Installation ................................................................................................18
4.1 Regulations governing installation ...................18
4.2 Package list .........................................................18
4.2.1 Standard delivery ..................................................18
4.2.2 Accessories ...........................................................18
4.3 Choice of the location ........................................19
4.3.1 Data plate ..............................................................19
4.3.2 Location of the appliance ......................................20
4.3.3 Ventilation .............................................................21
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4.3.4 Main dimensions ...................................................21
4.4 Positioning the appliance ..................................25
4.4.1 Positioning the boiler on its own ............................25
4.4.2 Fitting the boiler to a DHW tank ............................27
4.4.3 Positioning the boiler to the left or right of a DHW
tank .......................................................................28
4.4.4 Reversing the opening direction of the control panel
door .......................................................................28
4.5 Hydraulic connections .......................................29
4.5.1 Flushing the system ..............................................29
4.5.2 Hydraulic connection of the heating circuit ............30
4.5.3 Hydraulic connection of the water circuit for domestic
use ........................................................................30
4.5.4 Connecting the expansion vessel .........................30
4.5.5 Connecting the condensate discharge pipe ..........31
4.5.6 Filling the siphon ...................................................32
4.6 Gas connection ...................................................32
4.7 Flue gas system connections ............................33
4.7.1 Classification .........................................................34
4.7.2 Lengths of the air/flue gas pipes ...........................35
4.8 Installing the outside sensor .............................36
4.8.1 Choice of the location ............................................36
4.8.2 Connecting the outside sensor ..............................36
4.9 Electrical connections ........................................37
4.9.1 Control unit ............................................................37
4.9.2 Recommendations ................................................38
4.9.3 Access to the connection terminal ........................39
4.9.4 Position of the PCBs .............................................40
4.9.5 Connecting a direct heating circuit ........................41
4.9.6 Connecting a heating circuit and a domestic hot water
tank .......................................................................42
4.9.7 Connecting two circuits and a domestic hot water
tank .......................................................................46
4.9.8 Hot water storage tank connection ........................47
4.9.9 Pool connection .....................................................52
4.9.10 Connecting a mixed tank .......................................53
4.9.11 Connecting the options .........................................55
4.9.12 Connection in cascade ..........................................56
4.10 Electrical diagram ...............................................58
4.11 Filling the system ...............................................59
4.11.1 Water treatment ....................................................59
4.11.2 Filling the system ..................................................60
5 Commissioning ........................................................................................61
5.1 Control panel .......................................................61
5.1.1 Description of the keys ..........................................61
5.1.2 Description of the display ......................................62
5.1.3 Access to the various browsing levels ..................65
Contents
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5.1.4 Browsing in the menus ..........................................66
5.2 Check points before commissioning ................67
5.2.1 Preparing the boiler for commissioning .................67
5.2.2 Gas circuit .............................................................67
5.2.3 Hydraulic circuit .....................................................69
5.2.4 Electrical connections ...........................................69
5.3 Putting the appliance into operation ................69
5.4 Gas settings ........................................................70
5.4.1 Adapting to another gas type ................................70
5.4.2 Setting the air/gas ratio (Full load) ........................71
5.4.3 Setting the air/gas ratio (Part load) ......................72
5.4.4 Basic setting for the gas/air ratio ...........................74
5.5 Checks and adjustments after
commissioning ...................................................74
5.5.1 Displaying the parameters in extended
mode .....................................................................74
5.5.2 Setting the parameters specific to the
installation .............................................................75
5.5.3 Naming the circuits and generators ......................77
5.5.4 Setting the heating curve ......................................78
5.5.5 Finalizing work ......................................................80
5.6 Reading out measured values ...........................81
5.7 Changing the settings ........................................82
5.7.1 Language selection ...............................................82
5.7.2 Calibrating the sensors .........................................83
5.7.3 Professional settings .............................................84
5.7.4 Configuring the network ........................................91
5.7.5 Return to the factory settings ................................94
6 Switching off the appliance .....................................................................96
6.1 Installation shutdown .........................................96
6.2 Frost protection ..................................................96
7 Checking and maintenance .....................................................................97
7.1 General instructions ...........................................97
7.2 Chimney sweep instructions .............................97
7.3 Customising maintenance .................................98
7.3.1 Maintenance message ..........................................98
7.3.2 Contact details of the professional for After Sales
Support ..................................................................99
7.4 Standard inspection and maintenance
operations ...........................................................99
7.4.1 Checking the hydraulic pressure .........................100
7.4.2 Checking the expansion vessel ...........................100
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7.4.3 Checking the ionization current ...........................100
7.4.4 Checking the tightness of the flue gas evacuation and
air inlet connections ............................................100
7.4.5 Checking combustion ..........................................100
7.4.6 Checking and closing the automatic air vent .......101
7.4.7 Checking the safety valve ...................................101
7.4.8 Checking the siphon ............................................101
7.4.9 Checking the burner and cleaning the heat
exchanger ...........................................................102
8 Troubleshooting .....................................................................................103
8.1 Anti-hunting ......................................................103
8.2 Messages (Code type Bxx or Mxx) ..................103
8.3 Message history ................................................106
8.4 Faults (Code type Lxx or Dxx) .........................106
8.4.1 Deletion of sensors from the memory in the
PCB .....................................................................115
8.5 Failure history ...................................................116
8.6 Parameter and input/output check (mode
tests) ..................................................................116
8.6.1 Control system sequence ....................................119
9 Spare parts ..............................................................................................121
9.1 General ..............................................................121
9.2 Spare parts ........................................................121
9.2.1 Casing .................................................................122
9.2.2 Water unit ............................................................123
9.2.3 Control panel .......................................................124
9.2.4 Casing .................................................................124
9.2.5 Spare parts list ....................................................125
Contents
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1 Introduction
1.1 Symbols used
1.1.1. Symbols used in the manual
In these instructions, various danger levels are employed to draw the
user's attention to particular information. In so doing, we wish to
safeguard the user's safety, obviate hazards and guarantee correct
operation of the appliance.
DANGER
Risk of a dangerous situation causing serious physical
injury.
WARNING
Risk of a dangerous situation causing slight physical
injury.
CAUTION
Risk of material damage.
Signals important information.
¼ Signals a referral to other instructions or other pages in the
instructions.
1.1.2. Symbols used on the equipment
4Protective earthing
~Alternating current
½Caution dangerous live part
Disconnect the appliance from the mains before any work on it
Connect the protective earthing device
Before installing and commissioning the device, read
carefully the instruction manuals provided.
C003453-B
D000241-C
1. Introduction AGC 10/15 - AGC 15 - AGC 25 - AGC 35
620/01/2012 - 300026081-001-B

1.2 Abbreviations
43CE: Collective conduit for sealed boiler
4DHW: Domestic hot water
4Interscenario switch: Home automation switch that can be used
to centralise and control several scenarios
4Hi: Lower heating value LHV (Nett)
4Hs: Higher heating value HHV (Gross)
4PPS: Polypropylene hardly inflammable
4PCU: Primary Control Unit - PCB for managing burner operation
4PSU: Parameter Storage Unit - Parameter storage for PCBs
PCU and SU
4SCU: Secondary Control Unit - control panel PCB
4SU: Safety Unit - Safety PCB
43WV: 3-way valve
4HL: High Load - DHW tank with plate exchanger
4SL: Standard Load - DHW tank with coil
4SHL: Solar High Load - Solar DHW tank with plate exchanger
4SSL: Solar Standard Load - Solar DHW tank with coil
1.3 General
1.3.1. Manufacturer's liability
Our products are manufactured in compliance with the requirements
of the various applicable European Directives. They are therefore
delivered with [ marking and all relevant documentation.
In the interest of customers, we are continuously endeavouring to
make improvements in product quality. All the specifications stated in
this document are therefore subject to change without notice.
Our liability as the manufacturer may not be invoked in the following
cases:
4Failure to abide by the instructions on using the appliance.
4Faulty or insufficient maintenance of the appliance.
4Failure to abide by the instructions on installing the appliance.
1.3.2. Installer's liability
The installer is responsible for the installation and inital start up of the
appliance. The installer must respect the following instructions:
4Read and follow the instructions given in the manuals provided
with the appliance.
AGC 10/15 - AGC 15 - AGC 25 - AGC 35 1. Introduction
20/01/2012 - 300026081-001-B 7

4Carry out installation in compliance with the prevailing legislation
and standards.
4Perform the initial start up and carry out any checks necessary.
4Explain the installation to the user.
4If a maintenance is necessary, warn the user of the obligation to
check the appliance and maintain it in good working order.
4Give all the instruction manuals to the user.
1.4 Homologations
1.4.1. Certifications
CE identification no CE-0085CM0178
NOx classification 5 (EN 297 pr A3, EN 483)
Type of connection Chimney: B23, B33
Flue gas outlet: C13, C33, C43, C53, C63, C83, C93
1.4.2. Gas categories
Gas category Gas type Connection pressure (mbar)
II2ESi3P Natural gas H (G20) 20
Natural gas L (G25) 25
Propane (G31) 37
The boiler is preset in the factory to operate on natural gas H (G20).
¼ For operation on another type of gas, see chapter: "Adapting
to another gas type", page 70.
1.4.3. Additional Directives
Apart from the legal provisions and Directives, the additional
Directives described in these instructions must also be observed.
For all provisions and Directives referred to in these instructions, it is
agreed that all addenda or subsequent provisions will apply at the
time of installation.
WARNING
Installation of the appliance must be done by a qualified
engineer in accordance with prevailing local and national
regulations.
1. Introduction AGC 10/15 - AGC 15 - AGC 25 - AGC 35
820/01/2012 - 300026081-001-B

1.4.4. Factory test
Before leaving the factory, each boiler is set for optimum performance
and tested to check the following items:
4Electrical safety
4Adjustment (CO2)
4Domestic hot water mode
4Water tightness
4Gas tightness
4Parameter settings
AGC 10/15 - AGC 15 - AGC 25 - AGC 35 1. Introduction
20/01/2012 - 300026081-001-B 9

2 Safety instructions and
recommendations
2.1 Safety instructions
DANGER
If you smell gas:
1. Do not use a naked flame, do not smoke, do not
operate electrical contacts or switches ( doorbell,
light, motor, lift, etc..).
2. Shut off the gas supply.
3. Open the windows.
4. Trace possible leaks and seal them immediately.
5. If the gas leak is before the gas meter, contact the
gas supplier.
DANGER
If you smell flue gases:
1. Switch the appliance off.
2. Open the windows.
3. Trace possible leaks and seal them immediately.
2.2 Recommendations
WARNING
4Installation and maintenance of the boiler must be
carried out by a qualified professional in compliance
with prevailing local and national regulations.
4When working on the boiler, always disconnect the
boiler from the mains and close the main gas inlet
valve.
4After maintenance or repair work, check all
installations to ensure that there are no leaks.
CAUTION
The boiler must be installed in a frost-free environment.
Keep this document close to the place where the boiler is
installed.
Casing components
2. Safety instructions and recommendations AGC 10/15 - AGC 15 - AGC 25 - AGC 35
10 20/01/2012 - 300026081-001-B

Only remove the casing for maintenance and repair operations. Put
the casing back in place after maintenance and repair operations.
Instructions stickers
The instructions and warnings affixed to the appliance must never be
removed or covered and must remain legible during the entire lifespan
of the appliance. Immediately replace damaged or illegible
instructions and warning stickers.
Modifications
Modifications may only be made to the boiler after the written
permission of De Dietrich Thermique to do so.
AGC 10/15 - AGC 15 - AGC 25 - AGC 35 2. Safety instructions and recommendations
20/01/2012 - 300026081-001-B 11

3 Technical description
3.1 General description
Gas fired floor-standing condensing boiler
4High efficiency heating.
4Low pollutant emissions.
4Top of the range electronic DIEMATIC iSystem control panel.
4Flue gas evacuation via a forced flue, chimney, bi-flow, 3CE or
3CEP type connection.
4Optional domestic hot water production in combination with a
DHW tank.
The boiler is fitted with an interior light. The interior light
comes on in the following cases:
4The boiler is switched on: The lighting is switched on
for 10 minutes.
4The boiler is switched off: The lighting is switched on
for 30 minutes.
3.2 Main parts
1Flue gas discharge pipe
2Flue gas measuring point
3Heat exchanger
4Ignition/ionization electrode
5Box for the control PCBs
6Control panel
7Command module
8Water pressure sensor
9Shunt pump
10 Hydroblock
11 3-way valve
12 Safety valve
13 Casing
14 Expansion vessel
15 Combined venturi and gas valve unit
16 Fan
17 Air intake silencer
18 Mixer pipe
C003072-C
18
19
16
17
15
14
13
12
11
1234
10
9
5
6
7
8
3. Technical description AGC 10/15 - AGC 15 - AGC 25 - AGC 35
12 20/01/2012 - 300026081-001-B

19 Automatic air vent
3.3 Operating principle
3.3.1. Skeleton Diagrams
nBoiler self-standing
1Heat exchanger
2Hydroblock
3Heating flow
4Primary DHW tank flow
5Primary DHW tank return
6Heating return
73-way valve
8Shunt pump
9Expansion vessel
C003073-C
1
2
8
9
7
3 4 5 6
AGC 10/15 - AGC 15 - AGC 25 - AGC 35 3. Technical description
20/01/2012 - 300026081-001-B 13

nBoiler with HL type domestic hot water tank
1Heat exchanger
2Hydroblock
3Heating flow
4Plate exchanger inlet
5Plate exchanger outlet
6Heating return
73-way valve
8Shunt pump
9Expansion vessel
10 Domestic hot water outlet
11 Domestic cold water inlet
12 Plate heat exchanger
13 Domestic hot water pump
14 Domestic hot water tank
nBoiler with SL type domestic hot water tank
1Heat exchanger
2Hydroblock
3Heating flow
4Coil exchanger inlet
5Coil exchanger outlet
6Heating return
73-way valve
8Shunt pump
9Expansion vessel
15 Domestic hot water outlet
16 Domestic cold water inlet
17 Domestic hot water tank
18 Domestic water coil
M002513-E
1
2
8
9
7
3
10
12
13
14
456
11
M002514-C
1
2
8
9
7
3
15 16
17
18
456
3. Technical description AGC 10/15 - AGC 15 - AGC 25 - AGC 35
14 20/01/2012 - 300026081-001-B

3.3.2. Shunt pump
AGC 10/15 - 15 - 25
HManometric height available for the heating circuit
QWater flow
Useful output (T 20 K)
A10 kW
B15 kW
C20 kW
D25 kW
HManometric height available for the heating circuit
QWater flow
AUseful output 35 kW (T 20 K)
The boiler is fitted with a modulating pump which is regulated by the
control panel as a function of ΔT.
The graph shows the manometric height at various outputs. The
parameters MIN.PUMP SPEED and MAX.PUMP SPEED are used to
modify the pump settings.
4If flow noise can be heard in the system, it is possible to reduce
the maximum pump speed with the parameter MAX.PUMP
SPEED (First of all, vent the heating system).
4If circulation in the radiators is too low or the radiators do not fully
heat up, increase the minimum pump speed with the parameter
MIN.PUMP SPEED.
¼ See chapter: "Professional settings", page 84.
3.3.3. Water flow rate
The boiler's modulating control system limits the maximum difference
in temperature between the heating flow and return and the maximum
speed at which the flow temperature increases. In this way, the boiler
does not require a minimum water flow rate.
3.4 Technical specifications
Boiler type AGC 10/15 AGC 15 AGC 25 AGC 35
General
Nominal output (Pn)
Heating System (80/60 °C)
minimum-maximum kW 3,0 - 10,1 3,0 - 14,5 5,0 - 24,1 6,3 - 34,0
Nominal output (Pn)
Heating System (50/30 °C)
minimum-maximum kW 3,4 - 11,2 3,4 - 15,8 5,6 - 25,5 7,0 - 35,9
H (mbar)
C003452-E
Q (l/h)
0 200 400 600 800 1000 1200
0
100
200
300
400
500
600
700
800
B
A
C
D
1037834623440
A
H (mbar)
0
100
200
300
400
500
600
700
800
0 200 400 600 800 1000 1200 1400 1600
C003451-E
Q (l/h)
1465
AGC 10/15 - AGC 15 - AGC 25 - AGC 35 3. Technical description
20/01/2012 - 300026081-001-B 15

Boiler type AGC 10/15 AGC 15 AGC 25 AGC 35
Nominal output (Pn)
Heating System (40/30 °C)
minimum-maximum kW 3,4 - 16,0 3,4 - 16,0 5,6 - 25,9 7,0 - 36.4
Nominal input (Qn)
Heating System (Hi)
minimum-maximum kW 3,1 - 10,5 3,1 - 15,0 5,2 - 25,0 6,5 - 35,1
Nominal input(Qn)
Heating System (Hs)
minimum-maximum kW 3,4 - 11,7 3,4 - 16,7 5,8 - 27,8 7,2 - 39,0
Nominal input (Qnw)
DHW System (Hi)
minimum-maximum kW 3,1 - 15,0 3,1 - 15,0 5,2 - 29,3 6,5 - 35,1
Nominal input (Qnw)
DHW System (Hs)
minimum-maximum kW 3,4 - 16,7 3,4 - 16,7 5,8 - 32,6 7,2 - 39,0
Heating efficiency under full load (Hi)
(80/60 °C)
- % 96,5 96,5 96,3 96,9
Heating efficiency under full load (Hi)
(50/30 °C)
- % 105,3 105,3 102,0 102,2
Heating efficiency under partial load (Hi)
(Return temperature 60°C)
- % 94,9 94,9 96,1 96,3
Heating efficiency under partial load (EN
92/42) (Return temperature 30°C)
- % 108,8 108,5 108,0 108,2
Data on the gases and combustion gases
Gas consumption - Natural gas H (G20) minimum-maximum m3/h 0,33 - 1,59 0,33 - 1,59 0,55 - 3,10 0,69 - 3,71
Gas consumption - Natural gas L (G25) minimum-maximum m3/h 0,38 - 1,85 0,38 - 1,85 0,64 - 3,61 0,80 - 4,32
Gas consumption - Propane G31 minimum-maximum m3/h 0,13 - 0,61 0,13 - 0,61 0,21 - 1,20 0,27 - 1,44
NOx-Emission (Scrolls forward EN297A3) mg/kWh 33 33 38 41
Mass flue gas flow rate minimum-maximum kg/h 5,3 - 25,2 5,3 - 25,2 8,9 - 49,3 11,1 - 57,3
Flue gas temperature minimum-maximum °C 30 - 65 30 - 65 30 - 80 30 - 75
Maximum counter pressure Pa 22 80 120 140
Characteristics of the heating circuit
Water content (ex expansion vessel) l 1,9 1,9 1,9 2,5
Water operating pressure minimum kPa (bar) 80 (0,8) 80 (0,8) 80 (0,8) 80 (0,8)
Water operating pressure (PMS) maximum kPa (bar) 300 (3,0) 300 (3,0) 300 (3,0) 300 (3,0)
Water temperature maximum °C 110 110 110 110
Operating temperature maximum °C 90 90 90 90
Electrical characteristics
Power supply voltage VAC 230 230 230 230
Power consumption - Full load maximum W 101 101 116 173
Power consumption - Part load maximum W 25 25 25 68
Power consumption - Standby maximum W 4 4 4 4
Electrical protection index IP21 IP21 IP21 IP21
Other characteristics
Weight (empty) kg 56 56 56 50
3.4.1. Sensor characteristics
Outside sensor
Temperature in °C -20 -16 -12 -8 -4 0 4 8 12 16 20 24
Resistance in Ω 2392 2088 1811 1562 1342 1149 984 842 720 616 528 454
3. Technical description AGC 10/15 - AGC 15 - AGC 25 - AGC 35
16 20/01/2012 - 300026081-001-B

Outlet sensor circuit B+C
Domestic hot water sensor
System sensor
Flow sensor - Return sensor NTC
Temperature in °C 0 10 20 25 30 40 50 60 70 80 90
Resistance in Ω 32014 19691 12474 10000 8080 5372 3661 2535 1794 1290 941
AGC 10/15 - AGC 15 - AGC 25 - AGC 35 3. Technical description
20/01/2012 - 300026081-001-B 17

4 Installation
4.1 Regulations governing installation
WARNING
Installation of the appliance must be done by a qualified
engineer in accordance with prevailing local and national
regulations.
4.2 Package list
4.2.1. Standard delivery
The delivery includes:
4The boiler, fitted with a connection cable
4Outside sensor
4Installation and Service Manual
4User Guide
4.2.2. Accessories
Various options are available depending on the configuration of the
installation.
Boiler options
Description package
Condensates neutralisation station DU13
Condensates neutralisation station without lift pump BP52
Flue gas safety thermostat JA38
adapter 80/125 HR38
3-way internal valve kit JA6
External circuit kit JA7
Direct elbow JA43
Propane conversion kit AGC 15 JA39
Propane conversion kit AGC 25 JA40
Propane conversion kit AGC 35 JA41
4. Installation AGC 10/15 - AGC 15 - AGC 25 - AGC 35
18 20/01/2012 - 300026081-001-B