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