DeDietrich MODULENS O AFC 18 Manual

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MODULENS O®EN
Oil-fired condensing boilers
AFC 18 - AFC 24 - AFC 30
Installation and
Service Manual
300026439-07

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 declaration of conformity is available from the
manufacturer.
C003918-A

Contents
1 Safety instructions .....................................................................................6
1.1 Safety instructions ...............................................6
1.2 Recommendations ................................................7
1.3 Liabilities ...............................................................8
1.3.1 Manufacturer’s liability .............................................8
1.3.2 Installer’s liability .....................................................8
2About this manual ......................................................................................9
2.1 Symbols used .......................................................9
2.1.1 Symbols used in the manual ...................................9
2.1.2 Symbols used on the equipment .............................9
2.2 Abbreviations ......................................................10
2.3 After Sales Service Internet Site .......................10
3 Technical specifications ..........................................................................11
3.1 Homologations ....................................................11
3.1.1 Certifications .........................................................11
3.1.2 Oil category ...........................................................11
3.1.3 Additional Directives ..............................................11
3.1.4 Factory test ...........................................................12
3.2 Technical specifications ....................................12
3.2.1 Boiler specifications ..............................................12
3.2.2 Burner specifications .............................................14
3.2.3 Sensor characteristics ...........................................14
4 Product description .................................................................................15
4.1 General description ............................................15
4.2 Operating principle .............................................15
4.2.1 Skeleton Diagrams ................................................15
4.2.2 Circulation pump ...................................................20
4.2.3 Water flow rate ......................................................20
4.2.4 Burner operating cycle ..........................................20
4.3 Main parts ............................................................25
4.3.1 Boiler .....................................................................25
4.3.2 Fuel oil burner .......................................................26
4.4 Package list .........................................................26
4.4.1 Standard delivery ..................................................26
4.4.2 Accessories ...........................................................27
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5 Installation ................................................................................................29
5.1 Regulations governing installation ...................29
5.2 Choice of the location ........................................30
5.2.1 Type plate .............................................................30
5.2.2 Positioning of the appliance ..................................30
5.2.3 Ventilation .............................................................32
5.2.4 Main dimensions ...................................................33
5.3 Positioning the appliance ..................................36
5.3.1 Positioning the boiler on its own ............................36
5.3.2 Fitting the boiler to a DHW tank ............................39
5.3.3 Positioning the boiler to the left or right of a DHW
tank .......................................................................39
5.3.4 Reversal of the direction the control panel access
door opens ............................................................40
5.4 Hydraulic connections .......................................43
5.4.1 Flushing the system ..............................................43
5.4.2 Connecting the expansion vessel
(Depending on country, standard delivery or
optional) ................................................................44
5.4.3 Installing the deaerator ..........................................45
5.4.4 Hydraulic connection of the heating circuit ............46
5.4.5 Connection of the water circuit for domestic
use ........................................................................46
5.4.6 Connecting the condensate discharge pipe ..........46
5.4.7 Filling the condensate trap ....................................48
5.5 Oil connection .....................................................48
5.5.1 General .................................................................48
5.5.2 Connecting ............................................................49
5.5.3 Diameter and length of the oil pipes ......................49
5.6 Flue gas system connections - Depending on
country .................................................................50
5.6.1 Connections for the air and exhaust pipes - Forced
flow (forced flue) - Type C .....................................50
5.6.2 Connections for the air and exhaust pipes - Single
flow (chimney) - Type B ........................................52
5.7 Installing the outside sensor .............................57
5.7.1 Choice of the location ............................................57
5.7.2 Connecting the outside sensor ..............................58
5.8 Electrical connections ........................................59
5.8.1 Control unit ............................................................59
5.8.2 Recommendations ................................................60
5.8.3 Accessing the connection terminal blocks ............60
5.8.4 Connecting a direct heating circuit ........................62
5.8.5 Connecting a direct circuit and a circuit with 3-way
valve ......................................................................63
5.8.6 Connecting a direct heating circuit and a domestic hot
water tank ..............................................................65
5.8.7 Connecting a direct heating circuit and an
independent domestic hot water tank ...................68
Contents
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5.8.8 Connecting two circuits and a domestic hot water
tank .......................................................................70
5.8.9 Connecting two heating circuits with pressure
breaker ..................................................................72
5.8.10 Hot water storage tank connection ........................73
5.8.11 Pool connection .....................................................80
5.8.12 Connecting a mixed tank .......................................82
5.8.13 Connecting the options .........................................83
5.8.14 Connection in cascade ..........................................84
5.9 Electrical diagram ...............................................86
5.9.1 Boiler .....................................................................86
5.9.2 Burner ...................................................................88
5.10 Filling the system ...............................................89
5.10.1 Water treatment ....................................................89
5.10.2 Filling the heating circuit ........................................90
5.10.3 Filling the drinking water circuit .............................91
6 Commissioning ........................................................................................92
6.1 Control panel .......................................................92
6.1.1 Description of the keys ..........................................92
6.1.2 Description of the display ......................................93
6.1.3 Access to the various browsing levels ..................96
6.1.4 Browsing in the menus ..........................................97
6.2 Checks and settings before
commissioning ...................................................98
6.2.1 Preparing the boiler for commissioning .................98
6.3 Putting the appliance into operation ................98
6.4 Setting the burner ...............................................99
6.4.1 Operations to be carried out before any attempt to set
the burner ..............................................................99
6.4.2 Setting the burner’s 3 operating outputs .............100
6.4.3 Checking combustion ..........................................101
6.5 Checks and adjustments after
commissioning .................................................102
6.5.1 Displaying the parameters in extended
mode ...................................................................102
6.5.2 Setting the parameters specific to the
installation ...........................................................102
6.5.3 Naming the circuits and generators ....................107
6.5.4 Setting the heating curve ....................................108
6.5.5 Finalizing work ....................................................110
6.6 Reading out measured values .........................110
6.7 Changing the settings ......................................111
6.7.1 Language selection .............................................112
6.7.2 Calibrating the sensors .......................................112
6.7.3 Professional settings ...........................................114
6.7.4 Configuring the network ......................................122
6.7.5 Return to the factory settings ..............................125
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7 Switching off the appliance ...................................................................126
7.1 Installation shutdown .......................................126
7.2 Antifreeze protection ........................................126
8 Checking and maintenance ...................................................................128
8.1 General instructions .........................................128
8.2 Chimney sweep instructions ...........................128
8.3 Customising maintenance ...............................129
8.3.1 Maintenance message ........................................129
8.3.2 Contact details of the professional for After Sales
Support ................................................................131
8.4 Standard inspection and maintenance
operations .........................................................131
8.4.1 Checking the hydraulic pressure .........................132
8.4.2 Checking the tightness of the flue gas discharge, the
air inlet and the condensates discharge ..............132
8.4.3 Checking the automatic air vent ..........................132
8.4.4 Cleaning of the heating body ..............................133
8.4.5 Cleaning the siphon ............................................137
8.4.6 Checking and replacing the installation’s oil
filter .....................................................................138
8.4.7 Maintenance of the burner ..................................138
8.5 Specific maintenance operations ....................142
8.5.1 Replacing the ignition electrodes ........................143
8.5.2 Maintenance of the air/flue gas drain connection
flues .....................................................................144
9 Troubleshooting .....................................................................................145
9.1 Anti-hunting ......................................................145
9.2 Messages (Code type Bxx or Mxx) ..................145
9.3 Message history ................................................148
9.4 Faults (Code type Lxx or Dxx) .........................148
9.4.1 Deletion of sensors from the memory in the
PCB .....................................................................154
9.5 Failure history ...................................................155
9.6 Parameter and input/output check (mode
tests) ..................................................................156
9.6.1 Control system sequence ....................................159
Contents
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10 Spare parts ..............................................................................................161
10.1 General ..............................................................161
10.2 Spare parts ........................................................162
10.2.1 Boiler body - Tank - Base - Fuel oil burner .........162
10.2.2 Hydraulics ...........................................................165
10.2.3 Expansion vessel 18 litres (Depending on country,
standard delivery or optional) ..............................166
10.2.4 Casing .................................................................167
10.2.5 Control panel .......................................................168
10.2.6 Fuel oil burner (Details) .......................................169
10.2.7 Spare parts list ....................................................170
11 Appendix – Information on the Ecodesign and Energy Labelling
Directives ................................................................................................174
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1 Safety instructions
1.1 Safety instructions
DANGER
This appliance can be used by children aged
from 8 years and above and persons with
reduced physical, sensory or mental capabilities
or lack of experience and knowledge if they have
been given supervision or instruction concerning
use of the appliance in a safe way and
understand the hazards involved. Children shall
not play with the appliance. Cleaning and user
maintenance shall not be made by children
without supervision.
DANGER
If you smell flue gases:
1. Switch the appliance off.
2. Open the windows.
3. Trace possible leaks and seal them
immediately.
WARNING
Depending on the settings of the appliance:
4The temperature of the flue gas conduits
may exceed 60°C.
4The temperature of the radiators may reach
95°C.
4The temperature of the domestic hot water
may reach 80°C (depending on the set point
temperature and activation of the
antilegionella function).
CAUTION
4Before any work, switch off the mains supply
to the appliance.
4Avoid direct contact with the flame viewport.
1. Safety instructions AFC 18 - AFC 24 - AFC 30
609/07/2015 - 300026439-07

1.2 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 carrying out work on the boiler,
always switch off the boiler at the mains and
close the main oil inlet.
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
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 to the boiler may only be carried out with the
written approval of your supplier.
AFC 18 - AFC 24 - AFC 30 1. Safety instructions
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1.3 Liabilities
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
commissioning of the appliance. The installer must
respect the following instructions:
4Read and follow the instructions given in the manuals
provided with the appliance.
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. Safety instructions AFC 18 - AFC 24 - AFC 30
809/07/2015 - 300026439-07