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

20/01/2012 - 300026081-001-B 1

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

20/01/2012 - 300026081-001-B 2

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

20/01/2012 - 300026081-001-B 3

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

20/01/2012 - 300026081-001-B 4

20/01/2012 - 300026081-001-B 5

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

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