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AMC 25
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DeDietrich AMC 15, AMC 25/28 MI, AMC 25, AMC 35 Installation And Service Manual

ADVANCE
S U S T A I N A B L E C O M F O R T
®
AMC
Ireland
en
Installation and Service Manual
AMC 15 AMC 25 AMC 35
AMC 25/28 MI
Diematic Evolution

Contents

2 AMC 7686707 - v.01 - 06092018
Contents
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3.3 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Additional documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.1 Symbols used in the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.1 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.2 Unit categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.1.3 Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.1.4 Factory test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.3 Dimensions and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.2 Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.1 Automatic refill device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.2 Circulation pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.3 Water flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.4 Skeleton diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.3 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.4 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.5 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5 Before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1 Installation regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2 Choice of the location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2.1 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2.2 Location of the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2.3 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2.1 Installing the mounting frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6.2.2 Positioning the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6.3.1 Rinsing the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.3.2 Water flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.3.3 Connection of the heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.3.4 Connection of the water circuit for domestic use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.3.5 Connecting the secondary heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.3.6 Disconnecting the secondary heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.3.7 Connecting the expansion vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.3.8 Connecting the condensate drain pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.4 Gas connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.5 Air supply/flue gas outlet connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
6.5.1 Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.5.2 Requirements for shaft for C93 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
6.5.3 Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.5.4 Dimensions of flue gas outlet pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6.5.5 Length of the air and flue gas pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6.5.6 Additional guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Contents
7686707 - v.01 - 06092018 AMC 3
6.5.7 Connecting the flue gas outlet and air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.6 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.6.1 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
6.6.2 Control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.6.3 Connecting a PC/laptop and diagnostic tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.6.4 Access to the connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
6.6.5 Connection options for the standard PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.6.6 Access to the PCB housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.6.7 Description of the SCB-10 PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
6.7 Connection diagrams PCB SCB-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.7.1 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.7.2 Factory configuration of circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.7.3 Boiler settings with SCB-10 control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.7.4 Connection direct zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.7.5 Connection 1 direct zone + DHW zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.7.6 Connection 1 LLH + 1 direct zone + DHW zone with electrical heating element . . . . . . . . . . . . . . . . . . . . . .51
6.7.7 Connection 1 LLH + 1 direct zone + mixing zone + DHW zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.7.8 Connection 1 LLH + 1 direct zone + mixing zone + DHW zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.7.9 Connection 1 LLH + 1 mixing zone + 1 direct zone + swimming pool + DHW zone . . . . . . . . . . . . . . . . . . . 56
6.7.10 Connection 1 LLH + 3 mixing zones + DHW zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6.7.11 Connection 1 combi–buffer + 1 direct zone + 1 mixing zone + solar collectors . . . . . . . . . . . . . . . . . . . . . . . 60
6.7.12 Connection 1 combi–buffer + 1 direct zone + 1 mixing zone + swimming pool + solar collectors . . . . . . . . . 61
6.7.13 Connection 2 boilers (cascade) + LLH + 1 direct zone + 1 mixing zone + DHW zone . . . . . . . . . . . . . . . . . 63
6.8 Filling the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.8.1 Water quality and water treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
6.8.2 Filling the siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6.8.3 Filling the system with the automatic refill device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.1 Checklist before commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.1.2 Gas circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.1.3 Hydraulic circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.1.4 Connections for the air and flue gas pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.1.5 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.2 Commissioning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.3 Gas settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.3.1 Adjusting to a different gas type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.3.2 Fan speeds for overpressure applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
7.3.3 Checking/setting combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
7.3.4 Basic setting for the gas/air ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7.4 Final instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7.4.1 Saving the commissioning settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
8 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
8.1 Control panel description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
8.1.1 Description of the components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
8.1.2 Description of the home screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
8.1.3 Description of the main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
8.1.4 Definition of zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
8.1.5 Definition of activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8.2 Use of the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8.2.1 Accessing the installer level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
8.2.2 Changing the display settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8.2.3 Changing the name and symbol of a zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.2.4 Changing the name of an activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.2.5 Setting the installer details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
8.2.6 Adjusting the heating curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.2.7 Activating the automatic (re)filling unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.2.8 Activating the screed drying program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.3 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.4 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.5 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
9.1 Setting the parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Contents
4 AMC 7686707 - v.01 - 06092018
9.2 List of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
9.2.1 CU-GH08 control unit settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
9.3 Setting the maximum heat input for CH operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
9.4 Settings SCB-10 print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
9.4.1 Setting the 0-10 Volt input function of SCB-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
9.4.2 Analogue temperature regulation (°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
9.4.3 Configuring a DHW tank with two sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
9.5 Reading out measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
9.6 List of measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
9.6.1 CU-GH08 control unit counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
9.6.2 CU-GH08 control unit signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
9.6.3 Status and sub-status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
9.7 Resetting or restoring settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
9.7.1 Resetting the configuration numbers CN1 and CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
9.7.2 Carrying out an auto-detect for the CAN matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
9.7.3 Restoring the commissioning settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9.7.4 Resetting to factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.2 Standard inspection and maintenance operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.2.1 Checking the water pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.2.2 Checking the expansion vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.2.3 Checking the ionisation current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.2.4 Checking the draw-off capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10.2.5 Check the flue gas outlet/air supply connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
10.2.6 Checking the combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10.2.7 Checking the automatic air vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10.2.8 Checking the safety valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10.2.9 Cleaning the siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
10.2.10 Checking the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.3 Specific maintenance work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.3.1 Opening boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.3.2 Replacing the ionisation/ignition electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.3.3 Cleaning the plate heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.3.4 Cleaning the water filter cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
10.3.5 Replacing the three-way valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
10.3.6 Replacing the non-return valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
10.3.7 Finalising work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
10.3.8 Replacing the control PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
10.3.9 Replacing the CB-03 PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
10.3.10 Updating the control panel firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
10.4 Refilling the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
10.4.1 Refilling the system with the automatic refill device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
10.4.2 Activating the automatic refill device (if fitted) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
10.4.3 Topping up the system (manually) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
11.1 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
11.1.1 Warning codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
11.1.2 Control unit blocking codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
11.1.3 Control unit locking codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
11.2 Error memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
11.2.1 Reading out and clearing the error memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
12 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
12.1 Disposal and recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
13 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
13.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
13.2 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
13.3 Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
14 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
14.1 EC declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
1 Safety
7686707 - v.01 - 06092018 AMC 5

1.1 General safety instructions

1 Safety

Danger If you smell gas:
1. Do not use naked flames, do not smoke and do not operate electrical contacts or switches (doorbell, lighting, motor, lift etc).
2. Shut off the gas supply.
3. Open the windows.
4. Trace possible leaks and seal them off immediately.
5. If the leak is upstream of the gas meter, notify the gas company.
Danger If you smell flue gases:
1.2
1. Switch the boiler off.
2. Open the windows.
3. Trace possible leaks and seal them off immediately.
Caution After maintenance or repair work, check the entire heating installation to ensure that there are no leaks.

Recommendations

Warning Installation and maintenance of the boiler must be carried out by a qualified installer in accordance with local and national regulations.
Warning If the mains lead is damaged, it must be replaced by the original manufacturer, the manufacturer's dealer or another suitably skilled person to prevent hazardous situations from arising.
Warning Always disconnect the mains supply and close the main gas tap when working on the boiler.
Warning Check the entire system for leaks after maintenance and servicing work.
1 Safety
6 AMC 7686707 - v.01 - 06092018
Caution
Make sure the boiler can be reached at all times. The boiler must be installed in a frost-free area. If the power cord is permanently connected, you must always install a main bipolar switch with an opening gap of at least 3 mm (EN 60335-1). Drain the boiler and central heating system if you are not going to use your home for a long time and there is a chance of frost. The frost protection does not work if the boiler is out of operation. The boiler protection only protects the boiler, not the system. Check the water pressure in the system regularly. If the water pressure is lower than 0.8 bar, the system must be topped up (recommended water pressure between 1.5 and 2 bar).
1.3
Important Keep this document near to the boiler.
Important Only remove the casing for maintenance and repair operations. Refit all panels when maintenance work and servicing are complete.
Important Instruction and warning labels must never be removed or covered and must be clearly legible throughout the entire service life of the boiler. Damaged or illegible instructions and warning stickers must be replaced immediately.
Important Modifications to the boiler require the written approval of De Dietrich.

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 our products, we strive constantly to improve them. We therefore reserve the right to modify the specifications given in this document.
1 Safety
7686707 - v.01 - 06092018 AMC 7
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.

2 About this manual

8 AMC 7686707 - v.01 - 06092018
2 About this manual

2.1 General

This manual is intended for the installer of a AMC boiler.
Important The manual is also available on our internet site.
2.2
2.3

Additional documentation

The following documentation is available in addition to this manual:
User manual

Symbols used

2.3.1 Symbols used in the manual

This manual uses various symbols to draw attention to special instructions. We do this to improve user safety, to prevent problems and to guarantee correct operation.
Danger Risk of dangerous situations that may result in serious personal injury.
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.

3 Technical specifications

7686707 - v.01 - 06092018 AMC 9
3 Technical specifications

3.1 Homologations

3.1.1 Certifications

Tab.1 Certifications
CE identification number PIN 0063CR3604
Class NOx
(1)
Type of connection B23, B
(1) EN 15502–1

3.1.2 Unit categories

Tab.2 Unit categories
Country Category Gas type Connection pressure (mbar)
Ireland II
2H3B/P
G20 (H gas) G30/G31 (butane/propane)
6
C
13(X)
C
(10)3(X)
23P
, C
33(X)
, C
20 30
, B
(12)3(X)
33
, C
43P
, C
53(X)
, C
63(X)
, C
93(X)
,

3.1.3 Directives

In addition to the legal requirements and guidelines, the supplementary guidelines in this manual must also be followed.
Supplements or subsequent regulations and guidelines that are valid at the time of installation shall apply to all regulations and guidelines specified in this manual.

3.1.4 Factory test

Before leaving the factory, each boiler is optimally set and tested for:
Electrical safety. Adjustment of (O2).
Domestic hot water function (For combi-boilers only). Water tightness. Gas tightness. Parameter setting.
3.2
Tab.3 General
AMC 15 25 25/28 MI 35
Nominal output (Pn) for central heat ing operation (80 °C/60 °C)
Nominal output (Pn) for central heat ing operation (50/30 °C)
Nominal output (Pn) for DHW opera tion
Nominal input (Qnh) central heating operation (Hi)
Nominal input (Qnh) for central heat ing operation (Hi) Propane

Technical data

min-max
(1)
min–max
(1)
min–max
(1)
min–max
(1)
kW 3.0 - 14.9
14.9
kW 3.4 - 15.8
15.8
kW -
-
kW 3.1 - 15.0
15.0
5.0 - 24.8
24.8
5.6 - 25.5
25.5
-
-
5.2 - 25.0
25.0
5.0 - 24.8
19.9
5.6 - 25.5
20.5
5.0 - 27.8
27.8
5.2 - 25.0
20.1
7.0 - 34.5
7.9 - 35.6
7.3 - 34.8
min-max 5.2 - 15.0 5.9 - 25.0 5.9 - 25.0 7.3 - 34.8
34.5
35.6
-
-
34.8
3 Technical specifications
10 AMC 7686707 - v.01 - 06092018
AMC 15 25 25/28 MI 35
Nominal input (Qnh) central heating operation (Hs)
Nominal input (Qnh) for central heat ing operation (Hs) Propane
Nominal input (Qnw) for DHW opera tion (Hi)
Nominal input (Qnw) for DHW opera tion (Hi) Propane
Nominal input (Qnw) for DHW opera tion (Hs)
Nominal input (Qnw) for DHW opera tion (Hs) Propane
Full load central heating efficiency
min–max
(1)
min-max
(1)
min–max
(1)
min–max kW -
min–max
(1)
min–max kW -
kW 3.4 - 16.7
16.7
5.8 - 27.8
27.8
5.8 - 27.8
22.3
8.1 - 38.7
5.8 - 16.7 6.5 - 27.8 6.5 - 27.8 8.1 - 38.7
kW -
-
-
kW -
-
-
-
-
-
5.2 - 28.0
28.0
5.9 - 28.0 -
-
-
-
-
5.8 - 31.1
31.1
6.5 - 31.1 -
-
% 99.3 99.2 99.2 99.1
(Hi) (80/60 °C) (92/42/EEC)
Full load central heating efficiency
% 105.3 102.0 102.0 102.2
(Hi) (50°C/30°C) (EN15502)
Part load central heating efficiency
% 94.9 96.1 96.1 96.3
(Hi) (return temperature 60°C)
Part load central heating efficiency
% 110.2 110.1 110.1 110.6 (Hi) (92/42/EEC) (return temperature 30°C)
Full load central heating efficiency
% 89.4 89.3 89.3 89.2 (Hs) (80/60°C) (92/42/EEC)
Full load central heating efficiency
% 94.8 91.9 91.9 92.0 (Hs) (50°C/30°C) (EN15502)
Part load central heating efficiency
% 85.5 86.5 86.5 86.7 (Hs) (return temperature 60°C)
Part load central heating efficiency
% 99.2 99.1 99.1 99.6 (Hs) (92/42/EEC) (return temperature 30°C)
(1) Factory setting
38.7
-
-
-
-
-
-
Tab.4 Details of gas and flue gas
AMC 15 25 25/28 MI 35
Gas inlet pressure G20 (H gas) min-max mbar 17 - 25 17 - 25 17 - 25 17 - 25
Gas consumption G20 (H gas) min-max
NOx annual emissions G20 (H gas)
O2 = 0% ppm 17 16 16 27
m3/h
0.33 - 1.59 0.55 - 2.65 0.55 - 2.96 0.77 - 3.68
EN15502
NOx annual emissions G20 (H gas)
H
I
mg/kWh 30 28 28 45
EN15502
NOx annual emissions G20 (H gas)
H
s
mg/kWh 27 25 25 41
EN15502
Flue gas quantity min-max kg/h
g/s
5.5 - 25.3
1.5 - 7.0
9.2 - 42.1
2.6 - 11.7
9.2 - 47.1
2.6 - 13.1
12.7 - 57.4
3.5 - 15.9
Flue gas temperature min-max °C 30 - 59 30 - 74 30 - 81 32 - 79
Maximum counter pressure Pa 80 120 130 140
Tab.5 Central heating circuit data
AMC 15 25 25/28 MI 35
Water content l 1.7 1.7 1.7 2.3
Water operating pressure min bar 0.8 0.8 0.8 0.8
Water operating pressure (PMS) max bar 3.0 3.0 3.0 3.0
Water temperature max °C 110.0 110.0 110.0 110.0
Operating temperature max °C 90.0 90.0 90.0 90.0
3 Technical specifications
7686707 - v.01 - 06092018 AMC 11
AMC 15 25 25/28 MI 35
Central heating total dynamic head
mbar 585 355 355 231
(ΔT = 20K)
Casing-related losses ΔT 30°C
ΔT 50°C
W 78
136
78
136
78
136
Tab.6 DHW circuit data
AMC 25/28 MI
Specific hot water flow rate D (60°C) l/min 8.2
Specific hot water flow rate D (40°C) l/min 14.5
Pressure difference on tap water side mbar 329
Flow rate threshold
(1)
max l/min 1.5
Water content l 0.33
Operating pressure (Pmw) bar 8
Minimum flow l/min 2
Score stars 3
(1) Minimum amount of water that comes out of the tap to make the boiler start.
Tab.7 Electrical data
AMC 15 25 25/28 MI 35
Supply voltage V~ 230 230 230 230
Power consumption – full load max
(1)
W 67
67
77 77
84 68
54
121
93 93
Power consumption – part load max W 27 26 26 27
Power consumption – standby max W 4 4 4 4
Electrical protection index
(2)
Fuses
(1) Factory setting. (2) Splashproof; under certain conditions, the boiler may be installed in damp areas, such as bathrooms. (3) The fuse is located on the CU-GH08 control unit
IP IPX5D IPX5D IPX5D IPX5D
(3)
CU-GH
A 2.5 2.5 2.5 2.5
Tab.8 Other data
AMC 15 25 25/28 MI 35
Minimum mounting weight
(1)
kg 36 36 38 31
Total weight (empty) kg 38 38 40 33
Average acoustic level at a distance of one metre from the boiler (LPA)
Central heating op
dB(A) 37
43
-
-
40
44 eration DHW oper ation
(1) Without front panel.
Tab.9 Technical parameters
AMC 15 25 25/28 MI 35
Condensing boiler Yes Yes Yes Yes
Low-temperature boiler
(1)
No No No No
B1 boiler No No No No
Cogeneration space heater No No No No
Combination heater No No Yes No
Rated heat output
Prated
kW 15 25 25 35
31
33
45
-
3 Technical specifications
12 AMC 7686707 - v.01 - 06092018
AMC 15 25 25/28 MI 35
Useful heat output at nominal heat
P
4
kW 14.9 24.8 24.8 34.5
output and high temperature oper
(2)
ation
Useful heat output at 30% of rated
P
1
kW 5.0 8.3 8.3 11.6
heat output and low temperature
(1)
regime
Seasonal space heating energy effi
ƞ
s
% 94 94 94 95
ciency
Useful efficiency at rated heat out put and high temperature regime
Useful efficiency at 30% of rated
ƞ
4
(2)
ƞ
1
% 89.5 89.4 89.4 89.3
% 99.3 99.2 99.2 99.6
heat output and low temperature
(1)
regime
Auxiliary electricity consumption
Full load
Part load
Standby mode
elmax elmin P
SB
kW 0.027 0.037 0.037 0.050
kW 0.018 0.017 0.017 0.018
kW 0.004 0.004 0.004 0.004
Other items
Standby heat loss
Ignition burner power consumption
Annual energy consumption
Sound power level, indoors
Emissions of nitrogen oxides NO
P
stby
P
ign
Q
HE
L
WA
X
kW 0.078 0.078 0.078 0.054
kW - - - -
GJ 46 76 76 105
dB(A) 45 51 51 53
mg/kWh 27 25 25 41
Domestic hot water parameters
Declared load profile - - A -
Daily electricity consumption
Annual electricity consumption
Water heating energy efficiency
Daily fuel consumption
Annual fuel consumption
(1) Low temperature means 30°C for condensing boilers, 37°C for low temperature boilers and 50°C (at heater inlet) for other heating appli
ances.
(2) High temperature operation means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
Q
elec
AEC ƞ
wh
Q
fuel
AFC
kWh - - 0.169 -
kWh - - 37 -
% - - 82.4 -
kWh - - 22.045 -
GJ - - 17 -
See See the back of this manual for contact information.

3.3 Dimensions and connections

AD-0001436-02
67
195
265
132
199
266
331
690
450
450
225
140
140
150
255
7686707 - v.01 - 06092018 AMC 13
Fig.1 Dimensions
3 Technical specifications
Tab.10 Connections
AMC 15 25 25/28 MI 35
Connecting the flue gas outlet Ø 60 mm Ø 60 mm Ø 60 mm Ø 60 mm
Connecting the air supply Ø 100 mm Ø 100 mm Ø 100 mm Ø 100 mm
Hose of safety valve Ø 25 mm Ø 25 mm Ø 25 mm Ø 25 mm
Condensation outlet Ø 25 mm Ø 25 mm Ø 25 mm Ø 25 mm
Heating circuit flow (primary circuit) G¾" G¾" G¾" G¾"
Domestic hot water outlet - - G½" -
Heating circuit flow (secondary circuit) G½" G½" - G½"
Gas connection G½" G½" G½" G½"
Domestic cold water inlet - - G½" -
Heating circuit return (secondary circuit) G½" G½" - G½"
Heating return (primary circuit) G¾" G¾" G¾" G¾"
AD-0001240-05
12
BK
BK
1 2
X116
51 6
4
BK
BK
3 1
X112
BK
BK
1 3
X113
9
X111
BK
BK
BK
BK
4 2 3 1
X11
14
X91
BK
BK
BK
BK
1 2 4 5
2 3 8 7 4 10 13 15
2 2
RD
3
BK
1
2
X115
BL
1
23
X114
BK
BK
1 2
X113
X10
4
4 7 2 1096
X8
1
BR
BL
GN/ YW
3 1
2 3
2
X41
X7
2 1 3
WH
BK
RD
1 3 2
X121
X6
1 2
GN/ YW
WH
BL
153
3 4
X21
X5
2
BK
BL
GN/ YW
GY
1 23
X22
3 4 1
X4
1
BK
BK
BK
X91
1 2 3
2 3
CB-03
7 81 2 3 4 5 6
R-Bus ToutBL RL
9 10
Tdhw
X1
X136
1 3 4 52
X131
1 3 4 52 6
X13
1 32 54 1 32 54
321
X134
54
321
X135
54
321
X132
54
6 7 8 9 10 11
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
Spare
X14
1 32
BK
BK
BK
321
X141
22
21
2019
18171615
141312
11
10
8
6
7
9
5
4
3
X11
X13
X12
X4
X3
X10
X8
X7
X14
X6
X5
X3
2 31
X32
1 32
X33
2 31
24
13 X31
2
N L
230V, 50Hz
1
4 132
1 3 42
X01
BR
BL
GN/ YW
BR
BR
BL
BL
GN/ YW
GN/ YW
3 Technical specifications
14 AMC 7686707 - v.01 - 06092018

3.4 Electrical diagram

Fig.2 Electrical diagram
Power supply (P) On/off switch (S) Automatic refill device
4 5 6
Control unit (CU-GH08) Display (DIS) Spare CAN-Bus connection
1 2 3
3 Technical specifications
7686707 - v.01 - 06092018 AMC 15
7
Service connection
8
Fan supply
9
CB-03 PCB
10
Ignition transformer (IT)
11
Ionisation/ignition electrode (E)
12
Gas combination block (GB)
13
Three-way valve (3WV)
14
Circulation pump (CH)
15
Flow sensor (FTS)
16
Return sensor (TR)
17
Tap water temperature sensor (TDHW)
18
Fan control (PWM)
19 20 21 22
BK
BL
BR
GN/YW
GY RD
WH
Flow sensor (FS) Pressure sensor (PS) PWM pump Storage information (CSU) Black Blue Brown Green/Yellow Grey Red White

4 Description of the product

16 AMC 7686707 - v.01 - 06092018
4 Description of the product
The AMC boiler is delivered with a combination of the control panel, control unit and extension PCB. The contents of this manual are based on the following software and navigation information:
Tab.11 Software and navigation information
Name visible in display Software version
Boiler AMC CU-GH08 1.4
Control panel Diematic Evolution MK3 1.29
PCB SCB-10 SCB-10 0.5
4.1

General description

4.2 Operating principle

The AMC boiler is a wall-mounted gas boiler with the following characteristics:
High-efficiency heating Low polluting emissions Automatic refill device High-quality electronic control panel Easier installation and connection thanks to the mounting frame delivered with the appliance.
The following boiler types are available:
Type Mode
AMC 15 AMC 25 AMC 35
AMC 25/28 MI Heating and production of domestic hot water.
4.2.1
The boiler has an automatic refill device located under the boiler.
The automatic refill device will refill the central heating system whenever the water pressure is lower than the set minimum. Refilling can be automatic or semi-automatic. On the semi-automatic setting, refilling will only start after confirmation by the user. The automatic refill device can also be used to fill an empty system.
If refilling takes too long or occurs too often (e.g. because the system leaks), a warning code will appear on the display and refilling will stop.

Automatic refill device

Heating only (option of producing domestic hot water using a separate hot water appliance).
4.2.2
The energy-efficient, modulating circulation pump is controlled by the control unit based on ΔT. The graphs show the total dynamic head at various outputs.

Circulation pump

Important The benchmark for the efficient circulation pumps is EEI ≤ 0.20.
Fig.3 AMC 15 - 25 - 25/28 MI
AD-3000862-02
Q
1600140012001000600 800400200
0
0
100
200
300
400
500
600
H
700
355
25 kW
1080
494
20 kW
860
585
15 kW
650
640
10 kW
430
AD-3000863-02
Q
1600140012001000600 800400200
0
0
100
200
300
400
500
600
H
700
231
35 kW
1500
387
30 kW
1290
508
25 kW
1080
594
20 kW
860
7686707 - v.01 - 06092018 AMC 17
4 Description of the product
H
Total dynamic head CH (mbar)
Fig.4 AMC 35
H
Total dynamic head CH (mbar)
Q
Water flow rate (l/h)
Q
Water flow rate (l/h)

4.2.3 Water flow

The modulating control of the boiler limits the maximum temperature difference between the flow and return and the maximum rise velocity of the flow temperature. In addition, a heat exchanger temperature sensor is mounted to monitor the minimum water flow. As a result, the boiler is virtually unaffected by low water flow.
AD-0000428-01
1
8
7
6
2 3 4 5
AD-3000830-01
1
7
6
2 3 4 5
4 Description of the product
18 AMC 7686707 - v.01 - 06092018

4.2.4 Skeleton diagram

Fig.5 AMC 15 - 25
Fig.6 AMC 35
1
Heat exchanger (CH)
2
Heating circuit flow (primary circuit)
3
Heating circuit flow (secondary circuit)
4
Heating return (secondary circuit)
5
Heating return (primary circuit)
6
Three-way valve
7
Circulation pump (CH)
8
Expansion vessel
1
Heat exchanger (CH)
2
Heating circuit flow (primary circuit)
3
Heating circuit flow (secondary circuit)
4
Heating return (secondary circuit)
5
Heating return (primary circuit)
6
Three-way valve
7
Circulation pump (CH)
AD-0000419-01
1
2
3
10
9
8
4 5 6 7
AD-0001371-02
2
16
15
14
17
18
19
20
21
22
3
4
5
6
7
8
9
10
11
12
13
1 23
4 Description of the product
7686707 - v.01 - 06092018 AMC 19
Fig.7 AMC 25/28 MI
4.3

Main components

Fig.8 AMC 15 - 25
1
Heat exchanger (CH)
2
Hydroblock
3
Plate heat exchanger (DHW)
4
Central heating circuit flow
5
Domestic hot water outlet
6
Domestic cold water inlet
7
Central heating circuit return
8
Three-way valve
9
Circulation pump (CH)
10
Expansion vessel
1
Flue gas outlet
2
Casing/air box
3
Flue gas measuring point
4
Mixing tube
5
Hydraulic flow pipe
6
Air intake silencer
7
Combined gas valve unit
8
Automatic air vent hose
9
Hydroblock, flow side
10
Housing for PCBs
11
Safety valve hose
12
Siphon
13
Instrument box
14
Circulation pump
15
Hydroblock, return side
16
Return pipe
17
Three-way valve
18
Condensate collector
19
Fan
20
Heat exchanger (CH)
21
Expansion vessel
22
Ionisation/ignition electrode
23
Air supply
AD-0001372-02
2
15
16
17
14
18
19
20
21
3
4
5
6
7
8
9
13
1
22
10
11
12
AD-0001373-03
2
17
16
15
14
18
19
20
21
22
23
3
4
5
6
8
7
9
10
11
12
13
1 24
4 Description of the product
20 AMC 7686707 - v.01 - 06092018
Fig.9
AMC 35
Fig.10 AMC 25/28 MI
4.4
4.5

Control panel

Standard delivery

1
Flue gas outlet
2
Casing/air box
3
Flue gas measuring point
4
Mixing tube
5
Hydraulic flow pipe
6
Air intake silencer
7
Combined gas valve unit
8
Automatic air vent hose
9
Hydroblock, flow side
10
Housing for PCBs
11
Safety valve hose
12
Siphon
13
Instrument box
14
Circulation pump
15
Hydroblock, return side
16
Return pipe
17
Three-way valve
18
Condensate collector
19
Fan
20
Heat exchanger (CH)
21
Ionisation/ignition electrode
22
Air supply
1
Flue gas outlet
2
Casing/air box
3
Flue gas measuring point
4
Mixing tube
5
Hydraulic flow pipe
6
Air intake silencer
7
Combined gas valve unit
8
Automatic air vent hose
9
Hydroblock, flow side
10
Housing for PCBs
11
Safety valve hose
12
Siphon
13
Instrument box
14
Circulation pump
15
Hydroblock, return side
16
Return pipe
17
Plate heat exchanger (DHW)
18
Three-way valve
19
Condensate collector
20
Fan
21
Heat exchanger (CH)
22
Expansion vessel
23
Ionisation/ignition electrode
24
Air supply
The AMC boiler is supplied with a Diematic Evolution control panel.
For more information, see Control panel description, page 77
The delivery includes:
The boiler, fitted with a three-core cable Mounting frame with automatic refill device Connection kit including cable glands and clamping rings
4 Description of the product
7686707 - v.01 - 06092018 AMC 21
Condensate drain hose for siphon and safety valve Condensates collector Seal plates for sealing off the lines for the secondary heating circuit if it is not being used Documentation Mounting template Sticker: This central heating unit is set for ...
This manual only deals with the standard scope of supply. For the installation or mounting of any accessories supplied with the boiler, please refer to the mounting instructions delivered with the accessories in question.
AD-0001197-01
AD-0001376-02
450
min.10
0
0
4
5
0
min. 250
m
i
n.
2
5
0
690

5 Before installation

22 AMC 7686707 - v.01 - 06092018
5 Before installation

5.1 Installation regulations

Warning The boiler must be installed by a qualified installer in accordance with local and national regulations.
5.2

Choice of the location

Fig.11 Position of data plate
Fig.12 Installation area

5.2.1 Data plate

The data plate on top of the boiler states the boiler serial number and important boiler specifications such as the model and gas category. The configuration numbers CN1 and CN2 codes are also stated on the data plate.

5.2.2 Location of the boiler

Use the guidelines and the required installation space as a basis for determining the correct place to install the boiler. When determining the correct installation area, take account of the permitted position of the flue gas outlet and/or air supply outlet. Ensure that there is sufficient space around the boiler for good access and ease of maintenance. Mount the boiler onto a flat surface.
Danger It is forbidden to store, even temporarily, combustible products and substances in the boiler or near the boiler.
Warning
Fix the appliance to a solid wall capable of bearing the weight of the boiler when full of water and fully equipped. Do not place the appliance above a heat source or a cooking appliance. Do not locate the boiler in direct or indirect sunlight.
Caution
The boiler must be installed in a frost-free area. An earthed electrical connection must be available close to the boiler. A connection to the drain must be present for the condensate drain close to the boiler.

5.2.3 Ventilation

AD-0001377-02
min. 550
min.550
min. 250
50 (2)
min. 250
100 min. (1)
7686707 - v.01 - 06092018 AMC 23
5 Before installation
Fig.13
Space for ventilation
(1)
Distance between the front of the boiler and the internal wall of the casing.
(2)
Space on either side of the boiler.
If the boiler is installed in a closed casing, observe the minimum dimensions indicated. Also allow for openings to prevent the following hazards:
Accumulation of gas Heating of the casing
Minimum cross section of the openings: S1 + S2 = 150 cm
2
AD-0001379-02
76499
0 2
-01
50
57
41
13
152,5
154,5
216
216
2 20
220
2
6,5
120
432
450
6
76
7
6
7
6565
63
50
1 95
690
42
487
715
3 6
100
59
10 (1x)
10 (1x)
1
0
(1x)
104,5
1
04,5
5
1
0 (1 x
)
1 0
(1x)
1
2
3
4
5

6 Installation

24 AMC 7686707 - v.01 - 06092018
6 Installation

6.1 General

Warning The boiler must be installed by a qualified installer in accordance with local and national regulations.
6.2

Preparation

Fig.14 Installing the mounting frame

6.2.1 Installing the mounting frame

The boiler is supplied with a mounting template.
Proceed as follows to hang the mounting frame:
1. Attach the mounting template of the boiler to the wall using adhesive tape.
Warning
Use a level on the mounting frame to check whether the mounting template is perfectly horizontal. Protect the boiler against building dust and cover the flue gas outlet and air supply connection points. Only remove this cover to assemble the relevant connections.
2. Drill 3 holes of Ø 10 mm.
Important The extra holes are intended for use in the event that one of the two fastening holes is not suitable for correct fastening of the plug.
3. Fit the Ø 10 mm plugs.
4. Attach the mounting frame to the wall with the Ø 8 mm screws supplied
5. Remove the level from the mounting frame.

6.2.2 Positioning the boiler

AD-0001380-02
AD-0001381-02
AD-3001203-01
7686707 - v.01 - 06092018 AMC 25
6 Installation
Fig.15 Removing boiler protection
Fig.16 Fitting gaskets
1. Remove the black protective strip on the underside of the boiler.
2. Remove the dust caps from all of the hydraulic inlets and outlets on the boiler.
Caution The valve of the filling loop must be closed.
3. Fit a fibre gasket to each joint on the valve plate.
Fig.17 Fitting the boiler
4. Position the boiler above the mounting frame. Gently lower the boiler.
5. Tighten the valve nuts on the boiler.
AD-0001383-03
1
2
AD-0001384-03
2
1
6 Installation
26 AMC 7686707 - v.01 - 06092018

6.3 Hydraulic connections

6.3.1 Rinsing the system

Installation must be carried out in accordance with the prevailing regulations, codes of practice and the recommendations in this manual.
Before a new boiler can be connected to an existing or new system, the entire system must be thoroughly cleaned and flushed. This step is absolutely crucial. The flushing helps to remove residue from the installation process (weld slag, fixing products etc.) and accumulations of dirt (silt, mud etc.)
Important Flush the system with a volume of water equivalent to at least three times the volume of the system. Flush the DHW pipes with a volume of water equivalent to at least 20 times the volume of the pipes.
Fig.18 Connecting the heating circuit
6.3.2

Water flow

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.
Important In the case of a combi boiler in an installation in which the flow can be fully disconnected from the return (e.g. by using thermostatic valves), a bypass pipe should be fitted or the expansion vessel placed on the central heating flow pipe.
6.3.3

Connection of the heating circuit

1. Fit the inlet pipe for CH water to the CH return connection .
2. Fit the outlet pipe for CH water to the CH flow connection .
Caution
Carry out any welding work required at a safe distance from the boiler or before the boiler is fitted. If using synthetic pipes, follow the manufacturer's (connection) instructions.

6.3.4 Connection of the water circuit for domestic use

Fig.19 Connecting water circuit for
domestic use
1. Connect the cold water inlet pipe to the domestic cold water connection .
2. Connect the domestic hot water outlet pipe to the domestic hot water connection
Caution
AD-0001385-04
4
3
2
1
AD-0001207-03
1
2
7686707 - v.01 - 06092018 AMC 27
If using synthetic pipes, follow the manufacturer's (connection) instructions. Carry out any welding work required at a safe distance from the boiler or before the boiler is fitted.

6.3.5 Connecting the secondary heating circuit

6 Installation
Fig.20 Connecting the secondary heating
circuit
Fig.21 Disconnecting the secondary
heating circuit
1. Fit the pipe supplied with the mounting frame to the domestic cold water connection of the automatic (re)fill device.
2. Connect the domestic cold water inlet to this pipe.
3. Fit the inlet pipe for CH water to the CH return connection .
4. Fit the outlet pipe for CH water to the CH flow connection .
Caution
Carry out any welding work required at a safe distance from the boiler or before the boiler is fitted. If using synthetic pipes, follow the manufacturer's (connection) instructions.
6.3.6

Disconnecting the secondary heating circuit

These connections must be closed off if the secondary heating circuit is not connected (solo use of the boiler). To do this, proceed as follows:
Important The blanking plates needed are supplied with the boiler.
1. Remove the secondary heating circuit valves from the mounting frame.
2. Place a blanking plate in the fitting (G½") and install this on the CH return connection .
3. Place a blanking plate in the fitting (G½") and install this on the CH flow connection .

6.3.7 Connecting the expansion vessel

The boiler is fitted as standard with an 12 litre expansion vessel.
If the water volume is greater than 150 litres or the static height of the system exceeds 5 metres, an additional expansion vessel must be fitted. Refer to the table below to determine the expansion vessel required for the system.
Validity terms of the table:
3-bar safety valve Average water temperature: 70°C Flow temperature: 80°C Return temperature: 60°C The filling pressure in the system is lower than or equal to the inflation pressure in the expansion vessel.
AD-3001204-01
1
2
4
4
3
3
AD-0001387-03
1
6 Installation
28 AMC 7686707 - v.01 - 06092018
Tab.12 Volume of the expansion vessel (litres)
Initial pressurinstae of the ex pansion vessel
Volume of the system (litres)
100 125 150 175 200 250 300 > 300
0.5 bar 4.8 6.0 7.2 8.4 9.6 12.0 14.4 Volume of the system x 0.048
1 bar 8.0 10.0
(1
14.0 16.0 20.0 24.0 Volume of the system x 0.080
12.0
)
1.5 bar 13.3 16.6 20.0 23.3 26.6 33.3 39.9 Volume of the system x 0.133
(1) Standard configuration.

6.3.8 Connecting the condensate drain pipe

Fig.22 Connecting the condensate
discharge pipe

6.4 Gas connection

1. Fit a plastic drain pipe of Ø 32 mm or larger, terminating in the drain.
Important Fit a watertrap or siphon in the drain pipe.
2. Insert the condensate collector into the drain pipe.
3. Attach the boiler siphon and safety valve drain hose to the condensate
discharge pipe connection and the safety valve .
4. Slide the hose into the drain pipe.
Caution
Never seal the condensate drain. The drain pipe must slope down at least 30 mm per metre, the maximum horizontal length is 5 metres. Condensed water must not be discharged into a gutter.
For more information, see Filling the siphon, page 66
Warning
Before starting work on the gas pipes, turn off the main gas tap. Before installing, check that the gas meter has sufficient capacity. Take into account the consumption of all appliances. Notify the local energy company if the gas meter has insufficient capacity.
Fig.23 Connecting the gas pipe
1. Fit the gas supply pipe to the gas connection .
2. Fit the gas pipe to the gas tap.
Caution
Always perform welding work at a sufficient distance from the boiler. Remove dirt and dust from the gas pipe.
Important We recommend installing a gas filter to prevent clogging of the gas valve unit.

6.5 Air supply/flue gas outlet connections

AD-3000924-01
AD-3000925-01
AD-3000926-01
AD-3000927-01
7686707 - v.01 - 06092018 AMC 29
Tab.13 Types of flue gas connections
Type Principle Description
B
23
B
23P
Room-ventilated version
Without down-draught diverter. Flue gas discharge via the roof. Air from the installation area.

6.5.1 Classification

Important
The installer is responsible ensuring that the right type of flue gas outlet system is used and that the diameter and length are correct. Always use connection materials and roof terminal supplied by the same manufacturer. Consult the manufacturer for compatibility details.
6 Installation
Permitted manufacturers
(1)
Connection material and roof terminal:
Centrotherm Cox Geelen Muelink & Grol Natalini Poujoulat Skoberne Ubbink
B
C
C
33
13(X)
33(X)
Room-ventilated version
Without down-draught diverter. Joint flue gas discharge via the roof, with guar anteed natural draft. (at all times underpressure in the joint discharge duct) Flue gas discharge rinsed with air, air from the installation area (special construction).
Room-sealed version
Discharge in the outside wall. Inlet opening for the air supply is in the same pressure zone as the discharge (e.g. a com bined outside wall feed-through). Parallel not permitted
Room-sealed version
Flue gas discharge via the roof. Inlet opening for the air supply is in the same pressure zone as the discharge (e.g. a concen tric roof feed-through).
Connection material:
Centrotherm Cox Geelen Muelink & Grol Natalini Poujoulat Skoberne Ubbink
Outside wall terminal and con nection material:
Cox Geelen Muelink & Grol
Roof terminal and connection material
Centrotherm Cox Geelen Muelink & Grol Natalini Poujoulat Skoberne Ubbink
AD-3000928-01
AD-3000929-02
AD-3000931-01
6 Installation
30 AMC 7686707 - v.01 - 06092018
Type Principle Description
C
43P
(2)
Combined air supply and flue gas outlet system (CLV) with overpressure.
Concentric (preferably). Parallel (if concentric is not possible).
Minimum permitted pressure difference between the air supply and the flue gas outlet is -200 Pa (including -100 Pa wind pressure). The channel must be designed for a nominal flue gas temperature of 25°C Place a condensation drain, equipped with a si phon, at the bottom of the channel. Maximum permissible recirculation of 10%. The common outlet should be appropriate for a pressure of at least 200 Pa. The roof feed-through must be designed for this configuration and must cause a draught in the channel. A draught diverter is not permitted.
Important
The fan speed must be adapted for this configuration. Contact us for more information.
C
53(X)
Connection in different pressure zones
Closed unit. Separate air supply duct. Separate flue gas discharge duct. Discharging into various pressure areas. The air supply and the flue gas outlet must not be placed on opposite walls.
Permitted manufacturers
(1)
Connecting material to the common channel:
Centrotherm Cox Geelen Muelink & Grol Natalini Poujoulat Skoberne Ubbink
Connection material and roof terminal:
Centrotherm Cox Geelen Muelink & Grol Natalini Poujoulat Skoberne Ubbink
C
C
(3)
63(X)
93(X)
This type of unit is supplied by the manufacturer
without a supply and discharge system.
Room-sealed version
Air supply and flue gas discharge duct in shaft or ducted:
Concentric. Air supply from existing duct. Flue gas discharge via the roof. Inlet opening for the air supply is in the same pressure zone as the discharge.
When selecting the material, please note the following:
Condensed water must flow back to the appliance The material must be resist ant to the flue gas tempera ture of this appliance. Maximum permissible recir culation of 10%. The air supply and the flue gas outlet must not be placed on opposite walls. Minimum permitted pressure difference between the air supply and the flue gas outlet is -200 Pa (including -100 Pa wind pressure).
Connection material and roof terminal:
Centrotherm Cox Geelen Muelink & Grol Natalini Poujoulat Skoberne Ubbink
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