De Dietrich AFC 18 - AFC 24 - AFC 30 User guide

Brand: De Dietrich

Model: AFC 18 - AFC 24 - AFC 30

Type: User guide

ADVANCE

S U S T A I N A B L E C O M F O R T

MW-5000225-03

User Guide

Oil-fired condensing boilers

MODULENS O

AFC 18

AFC 24

AFC 30

Contents

1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3.3 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

2 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1.1 Symbols used in the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1.2 Symbols used on the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2.2 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.1 Ecodesign Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.2 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.2.1 Technical data - Boiler space heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2.2 Boiler specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

4 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

4.2 Circulating pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.3 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.4 Control panel description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.4.1 Description of the keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.4.2 Description of the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

5.1 Browsing in the menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.3 Shut-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

5.4 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.1 Setting the parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.1.1 Setting the set point temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

6.1.2 Selecting the operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.1.3 Forcing domestic hot water production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.1.4 Setting the contrast and brightness of the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

6.1.5 Setting the time and date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

6.1.6 Selecting a timer programme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

6.1.7 Customising a timer programme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.2 Displaying the measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.2.1 Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.2.2 User level – #MEASURES menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.1 General instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.2 Specific instructions for the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.3 Periodic checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

7.4 Filling the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

7.5 Venting the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

7.6 Draining the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

8.1 Anti-short cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.2 Messages (Bxx or Mxx-type codes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.2.1 List of Bxx or Mxx type error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.3 Faults (Lxx or Dxx-type codes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.3.1 List of Lxx or Dxx type error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Contents

2 AFC 300026440 - v07 - 02082019

9 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.1 Disposal and recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.2 Energy savings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.3 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

10 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

10.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

10.2 Terms of warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

11 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.1 Product fiche . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.2 Product fiche - Temperature Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

11.3 Package fiche - Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Contents

300026440 - v07 - 02082019 AFC 3

1 Safety

1.1 Safety

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.

Important

This manual can also be found on our internet

site.

Caution

A disconnection method must be allowed in the

fixed pipes in accordance with the rules on

installation in force in the country.

Caution

If a power cord comes with the appliance and it

turns out to be damaged, it must be replaced by

the manufacturer, its after sales service or

persons with similar qualifications in order to

obviate any danger.

Caution

Respect the maximum water inlet pressure to

ensure correct operation of the appliance,

referring to the chapter "Technical

Specifications".

Danger

If you smell flue gases:

1. Switch off the appliance.

2. Open the windows.

3. Evacuate the property.

4. Contact a qualified professional.

1 Safety

4 AFC 300026440 - v07 - 02082019

Warning

According to the appliance settings:

The temperature of the flue gas pipes may

exceed 60 °C.

The radiator temperature may reach 95 °C.

The temperature of the domestic hot water may

reach 80 °C (depending on the set point

temperature and the activation of the anti-

legionella function).

Caution

Do not neglect to service the appliance. For

completely safe and optimum operation, you

must have your boiler regularly serviced by an

approved installer.

Before any work, switch off the power supply to

the appliance.

Avoid direct contact with the flame inspection

window.

1.2

Recommendations

Danger

Only qualified persons are authorised to

assemble, install and maintain the installation.

Regularly check the hydraulic pressure in the circuit:

Minimum pressure: 0.8 bar (0.08 MPa)

Recommended pressure: between 1.5 and 2 bar

(0.15 and 0.2 MPa)

Keep the appliance accessible at all times.

Never remove or cover the labels and data plates

affixed to appliances. Labels and data plates must be

legible throughout the entire lifetime of the appliance.

The appliance should be on Summer or Frost

protection mode rather than switched off to guarantee

the following functions:

Anti blocking of pumps

Frost Protection

1.3 Liabilities

1.3.1 Manufacturer's liability

Our products are manufactured in compliance with the

requirements of the various Directives applicable. They

are therefore delivered with the marking and any

documents necessary. In the interests of the quality of

1 Safety

300026440 - v07 - 02082019 AFC 5

our products, we strive constantly to improve them. We

therefore reserve the right to modify the specifications

given in this document.

Our liability as manufacturer may not be invoked in the

following cases:

Failure to abide by the instructions on installing and

maintaining the appliance.

Failure to abide by the instructions on using the

appliance.

Faulty or insufficient maintenance of the appliance.

1.3.2

Installer's liability

The installer is responsible for the installation and initial

commissioning of the appliance. The installer must

observe the following instructions:

Read and follow the instructions given in the manuals

provided with the appliance.

Install the appliance in compliance with prevailing

legislation and standards.

Carry out initial commissioning and any checks

necessary.

Explain the installation to the user.

If maintenance is necessary, warn the user of the

obligation to check the appliance and keep it in good

working order.

Give all the instruction manuals to the user.

1.3.3 User's liability

To guarantee optimum operation of the system, you

must abide by the following instructions:

Read and follow the instructions given in the manuals

provided with the appliance.

Call on a qualified professional to carry out installation

and initial commissioning.

Get your installer to explain your installation to you.

Have the required inspections and maintenance

carried out by a qualified installer.

Keep the instruction manuals in good condition close

to the appliance.

1 Safety

6 AFC 300026440 - v07 - 02082019

2 About this manual

2.1 Symbols used

2.1.1 Symbols used in the manual

This manual uses various danger levels to draw attention to special

instructions. We do this to improve user safety, to prevent problems and to

guarantee correct operation of the appliance.

Danger

Risk of dangerous situations that may result in serious personal

injury.

Danger of electric shock

Risk of electric shock.

Warning

Risk of dangerous situations that may result in minor personal

injury.

Caution

Risk of material damage.

Important

Please note: important information.

See

Reference to other manuals or pages in this manual.

2.1.2 Symbols used on the appliance

1 Alternating current.

2 Protective earthing.

3 Before installing and commissioning the appliance, carefully read

the instruction manuals provided.

4 Dispose of used products through an appropriate recovery and

recycling structure.

5 Caution: danger of electric shock, live parts. Disconnect the mains

power prior to carrying out any work.

6 Connect the appliance to the protective earthing.

2.2

Abbreviations

3CE: Collective piping for sealed boiler

3WV: Three-way valve

PCU: Primary Control Unit - Burner management PCB

PSU: Parameter Storage Unit - Storage of parameters for the PCU and

SU PCBs

SCU: Secondary Control Unit – DIEMATIC iSystem control panel PCB

SU: Safety Unit – Safety PCB

Fig.1

1 2

MW-1000123-2

2 About this manual

300026440 - v07 - 02082019 AFC 7

DHW: Domestic Hot Water

Hi: Lower heating value LHV

Hs: Higher heating value HHV

HL: High Load – DHW tank plate heat exchanger

SL: Standard Load – Coiled DHW tank

SHL: Solar High Load – Solar DHW tank plate heat exchanger

BM: Boiler module

CFC: Chlorofluorocarbon

2 About this manual

8 AFC 300026440 - v07 - 02082019

3 Technical specifications

3.1 Homologations

3.1.1 Ecodesign Directive

This product conforms to the requirements of European Directive

2009/125/EC on the ecodesign of energy-related products.

3.1.2 Certifications

Tab.1

CE identification no. CE : 1312 CN 5691

Type of connection Chimney : B

, B

23P

Forced flue: C

13(x)

, C

33(x)

, C

93(x)

Tab.2

Germany The boilers are compliant with the 1. BImSchV regulation, 2010 version.

Switzerland AEAI (Association of Cantonal Fire Insurance) approval no.: 24502

Belgium The boilers comply with the specifications of the Optimaz-Elite quality label.

The boilers comply with the requirements and standards laid down in the Royal Decrees of 8 Janu

ary 2004 and 17 July 2009.

3.2 Technical data

3.2.1 Technical data - Boiler space heaters

Tab.3 Technical parameters for boiler space heaters

Product name AFC 18 AFC 24 AFC 30

Condensing boiler Yes Yes Yes

Low-temperature boiler

(1)

No No No

B1 boiler No No No

Cogeneration space heater No No No

Combination heater Yes Yes Yes

Rated heat output

Prated

kW 17 23 29

Useful heat output at rated heat output and high tem

perature regime

(2)

kW 17.1 22.8 28.6

Useful heat output at 30% of rated heat output and

low temperature regime

(1)

kW 5.4 7.2 8.9

Seasonal space heating energy efficiency

% 90 90 90

Useful efficiency at rated heat output and high tem

perature regime

(2)

% 92.0 91.6 91.9

Useful efficiency at 30% of rated heat output and low

temperature regime

(1)

% 96.9 96.1 95.7

Auxiliary electricity consumption

Full load

elmax

kW 0.162 0.165 0.189

Part load

elmin

kW 0.072 0.082 0.086

Stand-by

kW 0.006 0.006 0.006

Other specifications

Standby heat loss

stby

kW 0.109 0.109 0.128

Ignition burner power consumption

ign

kW - - -

Annual energy consumption

GJ 54 74 93

3 Technical specifications

300026440 - v07 - 02082019 AFC 9

Product name AFC 18 AFC 24 AFC 30

Sound power level, indoors - for a type B air/flue gas

connection

dB 61 61 61

Sound power level, indoors - for a type C air/flue gas

connection

dB 58 63 59

Emissions of nitrogen oxides NO

mg/kWh 79 72 78

(1) Low temperature means for condensing boilers 30°C, for low temperature boilers 37°C and for other heaters 50°C return temperature

(at heater inlet).

(2) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.

See

The back cover for contact details.

3.2.2 Boiler specifications

Tab.4 Test conditions:

5% at minimum output and 3% at maximum out

put

Maximum operating pressure - Primary circuit (heating water) 3 bar (0.3 MPa)

Maximum operating temperature 85 °C

Boiler temperature Can be set from 30 to 90 °C

Safety thermostat 105 °C

Min flow temperature 20 °C

Min. return temperature 20 °C

Room temperature 20 °C

Tab.5

Boiler Unit AFC 18 AFC 24 AFC 30

Minimum

output

Full output Minimum

output

Full output Minimum

output

Full output

Power input (LHV) kW 10.4 17.6 13.9 23.5 17.4 29.4

Nominal output (Pn) at 50/30

°C

kW 10.6 18.0 14.1 24.0 17.6 30.0

Nominal output (Pn) at 80/60

°C

kW 10.0 17.1 13.4 22.8 16.7 28.6

Hi efficiency 100%

Nominal

output (Pn)

at 80/60 °C

% 96.3 97.2 96.4 97.1 95.9 97.4

Flue gas

temperature

°C < 60 < 70 < 60 < 70 < 65 < 75

100%

Nominal

output (Pn)

at 50/30 °C

% 101.5 102.1 101.4 102.0 101.1 101.6

Flue gas

temperature

°C <40 <45 <40 <45 <45 <50

Flue gas

temperature

°C <40 <45 <40 <45 <45 <50

Hi annual effi

ciency

at 75/60 °C % 101.1 100.9 100.7

at 40/30 °C % 105.3 105.1 104.6

Pressure available at the flue

gas nozzle (Pn)

mbar

(1)

0.14 0.22 0.33

Pa 14 22 33

3 Technical specifications

10 AFC 300026440 - v07 - 02082019

Boiler Unit AFC 18 AFC 24 AFC 30

Minimum

output

Full output Minimum

output

Full output Minimum

output

Full output

content

(Minimum output - start-up -

maximum output)

% 7 - 4.5 - 4 7 - 5 - 4 4 - 3 - 3

content

(2)

(Minimum output - start-up -

maximum output)

% 10.2 - 12.1 - 12.5 10.2 - 11.7- 12.5 12.5 - 13.2 - 13.2

Nominal water

flow rate at Pn

(50/30°C)

ΔT = 20K

0.773 1.032 1.291

Stand-by losses ΔT = 30 K W 109 109 128

Percentage of

losses through

the casing com

pared with the

stand-by losses

ΔT = 30 K % 61 61 63

Hydraulic circuit

pressure drop

(Pn)

ΔT = 10K

mbar

(3)

66.0 117.0 183.0

Hydraulic circuit

pressure drop

(Pn)

ΔT = 15K

mbar

(3)

29.0 52.0 81.0

Hydraulic circuit

pressure drop

(Pn)

ΔT = 20K

mbar

(3)

16.0 29.0 46.0

Electrical output of the boiler

only with no accessories

W 128 272 128 272 128 272

Water content litres 47 47 58

Flue gas mass flow rate (Nom

inal output Pn)

kg per sec 0.0075 0.01 0.0125

kg/h 27 36 45

Net weight (without packaging) kg 117 117 135

(1) These values apply to 80 mm flexible flue gas discharge systems. For Germany: These pipes are rigid. The length of rigid flue gas dis

charge systems is limited to 18 metres for technical reasons relating to start-up.

(2) Content values given as a guideline for oil with max. CO

equal to 15.4%

(3) 1 mbar = 10 mm CE = 100 Pa

3 Technical specifications

300026440 - v07 - 02082019 AFC 11

4 Description of the product

4.1 General description

Floor-standing condensing oil boiler

Heating only (with possibility to produce domestic hot water by

combining them with a domestic hot water tank).

High-efficiency heating.

Low pollutant emissions.

Modulating oil burner preassembled and preset.

Stainless steel heating body.

DIEMATIC iSystem top of the range electronic control panel.

Flue gas discharge by a forced flue or chimney type connection.

Flue gas discharge via a chimney type connection.

4.2

Circulating pump

Important

The benchmark for the most efficient circulating pumps is EEI ≤

0.20.

4.3 Main components

1 Oil filter, deaerator and stop valve

2 On/Off switch

3 Control module

4 18-litre expansion vessel

Belgium: optional expansion vessel

5 Condensates evacuation pipe

Fig.2

C003260-B

4 Description of the product

12 AFC 300026440 - v07 - 02082019

4.4 Control panel description

4.4.1 Description of the keys

Fig.3

A000867-B

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

A Temperature setting key (heating, DHW, swimming

pool)

B Operating mode selection key

C DHW override key

D Key to access the parameters reserved for the

installer

E Keys on which the function varies as and when

selections are made

F Rotary setting button:

Turn the rotary button to scroll through the menus

or modify a value

Press the rotary button to access the selected

menu or confirm a value modification

4.4.2 Description of the display

Functions of the keys

Access to the various menus

Menu scrolling

Parameter scrolling

Help available

Display the curve of the selected parameter

Resetting the timer programs to zero

Selection of the time range in comfort mode

Selection of the time range in reduced mode

Back to the previous level

Back to the previous level without saving the modifications made

Manual reset

Flame output level

Entire symbol flashes: Burner start-up but no flame

Part of the symbol flashes: output increase

Fig.4

MW-C002696-4

bar

STD

(

AUTO

Fig.5

MW-C002701-3

bar

12 14 16 18 22 2420

AUTO

4 Description of the product

300026440 - v07 - 02082019 AFC 13

Fixed symbol: requested output attained

Part of the symbol flashes: output decrease

Solar

The indicator is present if a solar domestic hot water tank is connected.

Solar booster pump running

Top part of the tank reheated to the solar domestic hot water set

point

Top and middle part of the tank reheated to the solar domestic hot

water set point

Entire tank reheated to the solar domestic hot water set point

Tank not loaded and solar control system present

Summer / Winter Modes

Summer mode on:

heating off,

domestic hot water continues to be produced.

Winter mode on:

heating running,

domestic hot water continues to be produced.

Operating modes

Operation in automatic mode according to the timer programme

COMFORT mode: the symbol is displayed when a DAY override

(comfort) is activated

Steady symbol: permanent override

Flashing symbol: temporary override

REDUCED mode: the symbol is displayed when a NIGHT override

(reduced) is activated

Steady symbol: permanent override

Flashing symbol: temporary override

HOLIDAYS mode: the symbol is displayed when a HOLIDAYS

override (frost protection) is activated

Steady symbol: HOLIDAYS mode active

Flashing symbol: HOLIDAYS mode programmed.

MANUEL mode: the boiler operates with the set point displayed.

All of the pumps operate. The three-way valves are not controlled.

Installation pressure

Pressure indicator: hydraulic pressure sensor connected

Steady symbol: hydraulic pressure sufficient

Flashing symbol: hydraulic pressure insufficient

Hydraulic pressure level

0.9 to 1.1 bar

1.2 to 1.5 bar

1.6 to 1.9 bar

Fig.6

MW-L000197-5

bar

0 2 12 14 16 18 22 2420

AUTO

Fig.7

MW-C002697-5

bar

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

Fig.8

MW-C002698-4

bar

0 2 4 6 8 10 12 14 16

AUTO

Fig.9

MW-C002708-4

bar

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

bar

4 Description of the product

14 AFC 300026440 - v07 - 02082019

2.0 to 2.3 bar

> 2.4 bar

Domestic hot water override

A vertical bar is displayed at bottom left when a domestic hot water

override is activated.

Steady symbol: permanent override

Flashing symbol: temporary override

Information about the circuits

Domestic hot water production running

Three-way valve connected:

: 3-way valve open

: 3-way valve closed

Pump running

Name of the circuit for which the parameters are displayed

Fig.10

MW-C002707-4

bar

STD

AUTO

bar

STD

AUTO

AUT

Fig.11

MW-C002699-3

bar

12 14 16 18 22 2420

AUTO

bar

AUTO

4 Description of the product

300026440 - v07 - 02082019 AFC 15

5 Operation

5.1 Browsing in the menus

1. To select the desired menu, turn the rotary button.

2. To access the menu, press the rotary button.

To go back to the previous display, press the key.

3. To select the desired parameter, turn the rotary button.

4. To modify the parameter, press the rotary button.

To go back to the previous display, press the key.

5. To modify the parameter, turn the rotary button.

6. To confirm, press the rotary button.

Important

To cancel, press the key.

7. To go back to the main display, press the key twice.

Important

It is possible to use the and keys instead of the rotary

button.

Fig.12

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

#MEASURES

#CHOICE TIME PROG.

#TIME PROGRAM

#SETTING

#TIME .DAY

C002220-B-04

Fig.13

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CURRENT PROG.B

CURRENT PROG.C

C002221-C-04

Fig.14

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CURRENT PROG.C

"Choice of the timeprogram

applied C"

C002222-C-04

Fig.15

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

LUNDI 11:45

C002224-D-04

5 Operation

16 AFC 300026440 - v07 - 02082019

5.2 Start-up

1. Turn on the boiler using the on/off switch.

2. The first time the boiler is powered up, the LANGUAGE parameter is

displayed. Select the desired language by turning the rotary button.

3. Press the rotary button to confirm.

The boiler begins an automatic venting cycle that lasts around 3

minutes and is repeated each time the power is cut. If there is a

problem, the error is displayed on the screen.

4. Check the hydraulic pressure in the installation shown on the control

panel display.

Important

If the hydraulic pressure is less than 0.8 bar, add more water

(recommended hydraulic pressure: between 1.5 and 2.0

bar).

5.3

Shut-down

If the central heating system is not used for a long period of time, we

recommend switching off the boiler.

1. Switch the On/Off switch to Off.

2. Switch off the power supply to the boiler.

3. Close the oil inlet.

4. Ensure that the boiler and system are protected against frost damage.

5. Have the boiler and the chimney carefully swept.

6. Close the door of the boiler to prevent air circulating inside it.

7. Remove the pipe connecting the boiler to the chimney and plug the

flue gas nozzle.

8. Empty the tank and the domestic hot water piping (for modules with

domestic hot water production).

5.4 Frost protection

When the heating water temperature in the boiler is too low, the integrated

boiler protection system starts up. This protection functions as follows:

If the water temperature is lower than 7 °C, the heating pump starts up.

If the water temperature is lower than 4 °C, the boiler starts up.

If the water temperature is higher than 10 °C, the boiler shuts down and

the circulation pump continues to run for a short time (pump post-

circulation active).

If the water temperature in the buffer tank is less than 4 °C, it is

reheated to its set point.

Caution

Frost protection does not function if the appliance is switched

off.

The boiler protection only protects the boiler, not the system. To

protect the installation, set the appliance to HOLIDAYS mode.

The HOLIDAYS mode protects:

The installation if the outdoor temperature is lower than 3 °C (factory

setting).

Fig.16

8 22 2420

MW-C003159-A

Fig.17

Français - Deutsch - English -

Italiano - Espanol - Nederlands

- Pycck - Polski - Türk -

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

LANGUE FRANCAIS

MW-C002286-C

5 Operation

300026440 - v07 - 02082019 AFC 17

The room temperature if a remote control is connected and the room

temperature is lower than 6 °C (factory setting).

The domestic hot water tank if the domestic hot water tank temperature

is lower than 4 °C (the water is reheated to 10 °C).

See

To configure the HOLIDAYS mode: See the chapter "Selecting the

operating mode".

5 Operation

18 AFC 300026440 - v07 - 02082019

6 Settings

6.1 Setting the parameters

6.1.1 Setting the set point temperatures

To set the various heating, domestic hot water and swimming pool

temperatures, proceed as follows:

1. Press the key.

2. To select the desired parameter, turn the rotary button.

3. To modify the parameter, press the rotary button.

To go back to the previous display, press the key.

4. To modify the parameter, turn the rotary button.

5. To confirm, press the rotary button.

Important

To cancel, press the key.

Tab.6

Parameter Adjustment range Description Factory setting

DAY TEMP.A 5 to 30 °C Desired room temperature in comfort mode on circuit A 20 °C

NIGHT TEMP.A 5 to 30 °C Desired room temperature in reduced mode on circuit A 16 °C

DAY TEMP.B

(1)

5 to 30 °C Desired room temperature in comfort mode on circuit B 20 °C

NIGHT TEMP.B

(1)

5 to 30 °C Desired room temperature in reduced mode on circuit B 16 °C

DAY TEMP.C

(1)

5 to 30 °C Desired room temperature in comfort mode on circuit C 20 °C

NIGHT TEMP.C

(1)

5 to 30 °C Desired room temperature in reduced mode on circuit C 16 °C

DHW TEMP.

(1)

10 to 80 °C Desired domestic hot water temperature in the domestic hot

water circuit.

55 °C

TEMP.TANK AUX

(1)

10 to 90 °C Desired domestic hot water temperature in the auxiliary cir

cuit

55 °C

TEMP.DHW A

(1)

10 to 90 °C Desired domestic hot water temperature in the tank connec

ted to circuit A

55 °C

TEMP.SOL.TANK

(1)

20 to 80 °C Maximum load temperature of the tank's solar zone 65 °C

SWIMMING P.T.B

(1)

HG, 0.5 to 39 °C Desired temperature for swimming pool B 20 °C

SWIMMING P.T.C

(1)

HG, 0.5 to 39 °C Desired temperature for swimming pool C 20 °C

WATER T.NIGHT 10 to 80 °C Desired domestic hot water temperature in the domestic hot

water circuit.

10 °C

WATER T.NIGHTAUX 10 to 90 °C Desired domestic hot water temperature in the auxiliary cir

cuit

10 °C

WATER T.NIGHT.A 10 to 90 °C Desired domestic hot water temperature in circuit A 10 °C

(1) The parameter is only displayed for the corresponding options, circuits or sensors actually connected.

6.1.2 Selecting the operating mode

To select an operating mode, proceed as follows:

Fig.18

MODE

MW-C002266-A

6 Settings

300026440 - v07 - 02082019 AFC 19

1. Press the MODE key.

2. To select the desired parameter, turn the rotary button.

3. To modify the parameter, press the rotary button.

To go back to the previous display, press the key.

4. To modify the parameter, turn the rotary button.

5. To confirm, press the rotary button.

Important

To cancel, press the key.

MODE menu

Tab.7

Parameter Adjustment range Description Factory setting

AUTOMATIQUE The comfort mode ranges are determined by the timer pro

gramme.

DAY 7/7, xx:xx Comfort mode is forced until the time indicated or all the time

(7/7).

Current time + 1

hour

NIGHT 7/7, xx:xx Reduced mode is forced until the time indicated or all the time

(7/7).

Current time + 1

hour

HOLIDAYS 7/7, 1 to 364 The frost protection mode is active on all boiler circuits.

Number of days' holiday: xx

(1)

Stop heating: xx:xx

(1)

Start heating again: xx:xx

(1)

Current date + 1

day

SUMMER The heating is off.

Domestic hot water continues to be produced.

MANUEL The generator operates according to the set point setting. All

of the pumps operate. Possibility of setting the set point by

simply turning the rotary button.

FORCE AUTO

(2)

ON/ OFF An operating mode override is activated on the remote control

(optional).

To force all circuits to run on AUTOMATIQUE, select ON.

(1) The start and end days and the number of days are calculated in relation to each other.

(2) The parameter is only displayed if a room sensor is connected.

6.1.3 Forcing domestic hot water production

To force domestic hot water production, proceed as follows:

1. Press the key.

2. To select the desired parameter, turn the rotary button.

3. To modify the parameter, press the rotary button.

To go back to the previous display, press the key.

4. To modify the parameter, turn the rotary button.

5. To confirm, press the rotary button.

Important

To cancel, press the key.

Fig.19

MODE

MW-C002267-1

Fig.20

MODE

MW-C002268-A

6 Settings

20 AFC 300026440 - v07 - 02082019

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De Dietrich AFC 18 - AFC 24 - AFC 30 User guide

Brand: De Dietrich

Model: AFC 18 - AFC 24 - AFC 30

Type: User guide

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De Dietrich AFC 18 - AFC 24 - AFC 30 User guide

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