DeDietrich IX 145-50 Manual

PROJECT
S U S T A I N A B L E C O M F O R T ®
MW-2000818-1
en
Installation Manual Installation and Service Manual
Floor-standing condensing gas boiler
IX 145–50
IX 145–70
IX 145–90
IX 145–110

Contents
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.1 Symbols used in the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.2 Symbols used on the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.1 Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.1.2 EC Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.3 Gas category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.4 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.2.1 Other technical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.2 Sensor specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.3 Dimensions and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.2 Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.1 Circulating pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.2 Gas/air setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.3 Low-loss header (accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.2.4 Plate heat exchanger (accessories) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2.5 System in cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.2.6 Settings and safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.3 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3.1 Main boiler components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.3.2 Main burner components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.4 Control panel description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.4.1 Description of the keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.4.2 Description of the symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4.5 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.6 Accessories & options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5 Before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.1 Installation regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.2 Installation requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5.2.1 Water treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5.2.2 Gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.2.3 Electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2.4 Circulating pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.3 Choice of the location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.3.1 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3.2 Overall space needed for the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
5.3.3 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3.4 Selecting the position for the outside temperature sensor (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
5.4 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
5.5 Unpacking & initial preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6 Connecting diagrams and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.1 One boiler + one direct circuit + one domestic hot water tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.1.1 Hydraulic connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.1.2 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.1.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.2 One boiler + one underfloor heating circuit + one direct circuit + one domestic hot water tank . . . . . . . . . . . . . . . . . . 36
Contents
2 IX 7702703 - v04 - 05092019

6.2.1 Hydraulic connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.2.2 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.2.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.3 Boilers in cascade + one underfloor heating circuit + one direct circuit + one domestic hot water tank . . . . . . . . . . . . 38
6.3.1 Hydraulic connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.3.2 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.3.3 Connecting boilers in cascade with a OCI 345 module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.3.4 Configuration for 1 master boiler and 1 slave boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.3.5 Configuration for a master boiler and slave boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.4 Controlling a boiler in 0-10 V mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
6.4.1 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.4.2 Configuration of the control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.2 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.2.1 Accessing the internal boiler components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.3 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
7.3.1 Connection of the heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.3.2 Connecting the expansion vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.3.3 Connecting the condensate discharge pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
7.4 Gas connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.5 Air supply/flue gas outlet connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
7.5.1 Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.5.2 Coaxial pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.5.3 Separate pipes (not provided) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.5.4 Pipes in cascade (not provided) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.5.5 Lengths of the air/flue gas pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.6 Flue gas system accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.7 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.7.1 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
7.7.2 Recommended cable cross section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
7.7.3 Wiring the terminal blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.7.4 Description of the power supply terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.7.5 Description of the sensor terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.8 Filling the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
7.8.1 Filling the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.8.2 Filling the siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.9 Completing installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.2 Check-list before commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.3 Commissioning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.3.1 Checking the gas inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.3.2 Checking the electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.3.3 Checking the hydraulic circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.3.4 First time commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.4 Gas settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.4.1 Configuring the fan speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.4.2 Setting the air/gas ratio (maximum heat input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.4.3 Setting the air/gas ratio (reduced heat input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
8.4.4 Gas valve basic settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.4.5 CO2 checking and setting values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
8.4.6 Adapting the boiler to a different type of gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
9 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
9.1 Use of the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
9.1.1 Modifying the user parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
9.1.2 Modifying the installer parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
9.2 Starting up the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
9.3 Stopping the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
9.3.1 Putting the boiler in Standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
9.4 Frost Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
9.4.1 Activating the Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
9.5 Special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Contents
7702703 - v04 - 05092019 IX 3

10 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
10.1 List of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
10.1.1 Shortcuts menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
10.1.2 Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
10.1.3 List of user parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
10.1.4 List of installer parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
10.2 Setting the parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
10.2.1 Setting the date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
10.2.2 Selecting the language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
10.2.3 Changing the operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
10.2.4 Forcing domestic hot water production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
10.2.5 Setting the room temperature set point (On mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
10.2.6 Modifying the domestic hot water production mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
10.2.7 Setting the domestic hot water temperature set point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
10.2.8 Setting the room temperature set point (Reduced mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
10.2.9 Programming a Holiday period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
10.2.10 Using the fixed-speed boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
10.2.11 Selecting a heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
10.2.12 Locking/Unlocking parameter modification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
10.2.13 Timer programme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
10.2.14 Setting a temporary heating flow temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
10.2.15 Heating curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
10.2.16 Managing boilers in cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.3 Accessing the information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
11 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
11.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
11.2 Standard inspection and maintenance operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
11.2.1 Performing the annual service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
11.2.2 Removing the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
11.2.3 Cleaning the heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
11.2.4 Checking the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
11.2.5 Cleaning the siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
11.2.6 Remounting the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
11.2.7 Thermal fuse in the heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
11.2.8 Check the combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
11.3 Replacing the 4 A fuses on the electrical terminal blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
12 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
12.1 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12.1.1 List of error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12.2 Automatic error code clearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
12.3 Clearing error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
13 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
13.1 Decommissioning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
13.2 Recommissioning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
14 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
14.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
14.2 Spare parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
14.2.1 IX 145–50 and IX 145–70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
14.2.2 IX 145–90 and IX 145–110 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
15 Disposal/recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
15.1 Disposal and recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Contents
4 IX 7702703 - v04 - 05092019

1 Safety
1.1 General safety instructions
For the installer and end user:
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.
Caution
Do not touch the flue gas pipes. Depending on
the boiler settings, the temperature of the flue gas
pipes can rise to over 60°C.
Caution
Do not touch radiators for long periods.
Depending on the boiler settings, the temperature
of the radiators may exceed 60 °C.
Caution
Take precautions with the domestic hot water.
Depending on the boiler settings, the domestic
hot water temperature may exceed 65°C.
Danger of electric shock
Before any work, switch off the mains supply to
the boiler.
For the installer:
1 Safety
7702703 - v04 - 05092019 IX 5

Danger
If you smell gas:
1. Do not use a naked flame, do not smoke, do
not operate electrical contacts or switches
(doorbell, light, motor, lift, etc.).
2. Shut off the gas supply.
3. Open the windows.
4. Locate the probable leak and seal it
immediately.
5. If the leak is before the gas meter, contact the
gas supplier.
Danger
If you smell flue gases:
1. Switch off the appliance.
2. Open the windows.
3. Locate the probable source of the flue gas
leak and fix it immediately.
Warning
The condensation drain must not be changed or
sealed. If a condensate neutralisation system is
used, the system must be cleaned regularly in
accordance with the instructions provided by the
manufacturer.
For the end user:
Danger
If you smell gas:
1. Do not use a naked flame, do not smoke, do
not operate electrical contacts or switches
(doorbell, light, motor, lift, etc.).
2. Shut off the gas supply.
3. Open the windows.
4. Evacuate the property.
5. Contact a qualified professional.
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
6 IX 7702703 - v04 - 05092019

1.2 Recommendations
Danger
For safety reasons, we recommend fitting smoke
and CO2 detectors and alarms at suitable places
in your home.
Caution
The boiler must always be connected to the
protective earthing.
Earthing must comply with the prevailing
installation standards.
Earth the appliance before making any electrical
connections.
For the type and calibre of the protective
equipment, refer to the chapter Electrical
Connections in the Installation and Service
Manual.
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
A disconnection device must be fitted to the
permanent pipes in accordance with the
installation rules.
Caution
Power the appliance via a circuit that includes an
omni-polar switch with contact opening distance
of 3 mm or more.
Caution
Drain the boiler and heating system if the home is
left empty for a long period of time and there is a
chance of frost.
Caution
Remove the boiler casing only to perform
maintenance and repair work. Always put the
casing back in place after such work.
Caution
To enjoy warranty cover, no modifications must
be made to the boiler.
1 Safety
7702703 - v04 - 05092019 IX 7

Caution
The frost protection function only protects the
boiler, not the heating system.
Caution
The frost protection function does not work if the
boiler is powered off.
Caution
The appliance should be switched to Summer or
Frost Protection mode rather than be switched off
in order to guarantee the following functions:
Avoidance of pumps blocking
Frost Protection
Important
Respect the minimum and maximum water inlet
pressure to ensure correct operation of the boiler:
refer to the chapter Technical Specifications.
Important
Only qualified professionals are permitted to
install the boiler, in accordance with prevailing
local and national regulations.
Important
Never remove or cover labels and data plates
affixed to the boiler.
Labels and data plates must be legible
throughout the entire lifetime of the boiler.
Immediately replace damaged or illegible
instructions and warning labels.
Important
Keep this document close to the place where the
appliance is installed.
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
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:
1 Safety
8 IX 7702703 - v04 - 05092019

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 Safety
7702703 - v04 - 05092019 IX 9

2 About this manual
2.1 General
This manual is intended for the installer of a IX boiler.
2.2 Symbols used
2.2.1 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.
2.2.2 Symbols used on the appliance
1Alternating current.
2Protective earthing.
3Before installing and commissioning the appliance, carefully read
the instruction manuals provided.
4Dispose of used products through an appropriate recovery and
recycling structure.
5Caution: danger of electric shock, live parts. Disconnect the mains
power prior to carrying out any work.
Fig.1
1 2
MW-2000068-1
1
2
3
4
5
2 About this manual
10 IX 7702703 - v04 - 05092019

3 Technical specifications
3.1 Homologations
3.1.1 Directives
This product has been manufactured and put into circulation in
accordance with the requirements and standards of the following
European Directives:
Gas Appliances Regulation (EU) (2016/426)
Pressure Equipment Directive 2014/68/EU
Electromagnetic Compatibility Directive (2014/30/EU).
Low Voltage Directive (2014/35/EU).
Efficiency Directive (92/42/EEC)
European Ecodesign Directive (2009/125/EC)
EU Regulation (813/2013)
Energy Labelling Framework Regulation (EU) (2017/1369)
EU Regulation (811/2013)
Apart from the legal provisions and Directives, the additional Directives
described in these instructions must also be observed.
For all provisions and Directives referred to in these instructions, it is
agreed that all addenda or subsequent provisions will apply at the time of
installation.
3.1.2 EC Declaration of Conformity
The unit complies with the standard type described in the EC declaration
of conformity. It has been manufactured and commissioned in accordance
with European directives.
The original declaration of conformity is available from the manufacturer.
3.1.3 Gas category
Tab.1 Gas and supply pressure categories
Country Gas category Gas type Supply pressure (mbar)
France II2Esi3P G20 (natural gas H)
G25 (natural gas L)
G31 (propane)
20
25
37
Ireland II2H3P G20 (natural gas H)
G31 (propane)
20
37
Poland II2ELw3P G20 (natural gas H)
G27 (natural gas H)
G31 (propane)
20
20
37
Czech Republic II2H3P G20 (natural gas H)
G31 (propane)
20
37-50
Slovakia II2H3P G20 (natural gas H)
G31 (propane)
20
37-50
The boiler is pre-set in the factory to run on natural gas H (G20).
For operation with another type of gas, see the chapter "Conversion to
another gas".
3.1.4 Certifications
We hereby certify that the series of appliances specified below complies
with the standard model described in the CE declaration of conformity.
3 Technical specifications
7702703 - v04 - 05092019 IX 11

CE number CE-0085CP0089
NOx class Class 6
Type of flue gas connection B23 – B23P
C13(X)
C33(X)
C43(X)
C53(X)
C63(X)
C83(X)
3.2 Technical data
Tab.2 General
Boiler speed Unit IX 145–50 IX 145–70 IX 145–90 IX 145–110
Useful heat output at 80/60°C
Heating mode Minimum kW 5.0 7.2 9.4 11.4
Useful heat output at 80/60°C
Heating mode Maximum kW 45 65 85 102
Useful heat output at 50/30 °C
Heating mode Minimum kW 5.4 7.8 10.2 12.3
Useful heat output at 50/30 °C
Heating mode Maximum kW 48.6 70.2 91.8 110.2
Heat input -
Heating mode Minimum kW 5.1 7.4 9.7(1) 11.7
Heat input -
Heating mode Maximum kW 46.3 66.9 87.4 104.9
Heat input -
Heating mode Minimum kW 5.6 8.2 10.7 12.9
Heat input -
Heating mode Maximum kW 51.4 74.2 97.0 116.4
Efficiency at 80/60 °C -
Heating mode under full load Maximum % 97.4 97.2 97.3 97.2
Efficiency at 50/30 °C - Heating mode un
der full load % 105.0 105.0 105.5 105.1
Efficiency - - Return temperature
30°C
Heating mode un
der part load % 108.4 108.1 108.2 108.1
(1) The heat input with G31 gas is different and is 12.5 kW
Tab.3 Characteristics of the heating circuit
Unit IX 145–50 IX 145–70 IX 145–90 IX 145–110
Water content (excluding expansion vessel) litre 2.81 4.98 8.34 9.83
Minimum operating pressure MPa (bar) 0.05 (0.5) 0.05 (0.5) 0.05 (0.5) 0.05 (0.5)
Maximum operating pressure (MOP) MPa (bar) 0.38 (3.8) 0.38 (3.8) 0.38 (3.8) 0.38 (3.8)
Maximum water temperature °C 85 85 85 85
Maximum operating temperature °C 80 80 80 80
Tab.4 Data on the gases and combustion gases
For gas flow rates at 15°C and
1013.25 hPA
Boiler speed Unit IX 145–50 IX 145–70 IX 145–90 IX 145–110
Minimum gas pressure (G20) mbar 17 17 17 17
Nominal pressure (G20) mbar 20 20 20 20
Maximum pressure (G20) mbar 25 25 25 25
Minimum gas pressure (G25) mbar 20 20 20 20
Nominal pressure (G25) mbar 25 25 25 25
3 Technical specifications
12 IX 7702703 - v04 - 05092019

For gas flow rates at 15°C and
1013.25 hPA
Boiler speed Unit IX 145–50 IX 145–70 IX 145–90 IX 145–110
Maximum pressure (G25) mbar 30 30 30 30
Minimum gas pressure (G31) mbar 25 25 25 25
Nominal pressure (G31) mbar 37 37 37 37
Maximum pressure (G31) mbar 57.5 57.5 57.5 57.5
Consumption of natural gas (G20) Minimum m³/h 0.54 0.78 1.03 1.24
Consumption of natural gas (G20) Maximum m³/h 4.90 7.07 9.25 11.10
Consumption of natural gas (G25) Minimum m³/h 0.63 0.91 1.19 1.44
Consumption of natural gas (G25) Maximum m³/h 5.69 8.22 10.75 12.91
Consumption of Propane (G31) Minimum kg/h 0.40 0.57 0.97 0.91
Consumption of Propane (G31) Maximum kg/h 3.59 5.19 6.79 8.15
NOx emission according to EN297A3 Class 5 mg/kWh 29.8 34.8 39.5 24.7
Flue gas mass flow rate (G20) Minimum kg/h 7.2 14.4 18 18
Flue gas mass flow rate (G20) Maximum kg/h 75.6 111.6 144 169.2
Maximum flue gas temperature Minimum °C 92 76 70 70
Tab.5 Electrical specifications
Unit IX 145–50 IX 145–70 IX 145–90 IX 145–110
Power supply voltage VAC 230V 50Hz 230V 50Hz 230V 50Hz 230V 50Hz
Maximum absorbed power - Full load W 100 117 146 185
Maximum absorbed power - Part load W 24 24 24 24
Maximum absorbed power - Stand-by W 2.7 3 3 3
Tab.6 Other specifications
Unit IX 145–50 IX 145–70 IX 145–90 IX 145–110
Ingress protection rating IPX1B IPX1B IPX1B IPX1B
Weight empty kg 60 70 104 109
3.2.1 Other technical parameters
Tab.7 Technical parameters for boiler space heaters
Product name IX 145–50 IX 145–70 IX 145–90 IX 145–110
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 Yes Yes Yes Yes
Rated heat output Prated kW 45 65 85 102
Useful heat output at rated heat output
and high temperature regime(2)
P4 kW 45.0 65.0 85.0 102.0
Useful heat output at 30% of rated heat
output and low temperature regime(1)
P1 kW 15.0 21.7 28.3 34.0
Seasonal space heating energy efficiency ƞs % 93 93 - -
Useful efficiency at rated heat output and
high temperature regime(2)
ƞ4 % 87.7 87.6 87.7 87.6
Useful efficiency at 30% of rated heat
output and low temperature regime(1)
ƞ1 % 97.7 97.4 97.5 97.4
Auxiliary electricity consumption
Full load elmax kW 0.100 0.117 0.146 0.185
Part load elmin kW 0.023 0.024 0.024 0.024
Stand-by PSB kW 0.003 0.003 0.003 0.003
3 Technical specifications
7702703 - v04 - 05092019 IX 13

Product name IX 145–50 IX 145–70 IX 145–90 IX 145–110
Other specifications
Standby heat loss Pstby kW 0.045 0.046 0.062 0.072
Ignition burner power consumption Pign kW - - - -
Annual energy consumption QHE GJ 139 201 - -
Sound power level, indoors LWA dB 61 64 - -
Emissions of nitrogen oxides NOXmg/kWh 27 31 36 22
(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 Sensor specifications
Tab.8 Heating flow sensor and return sensor
Temperature (in °C) 30 65 85
Resistance (in ohms) 8059 2084 1070
Tab.9 Flue gas sensor
Temperature (in °C) -50 -10 0 40 100 200 250 300
Resistance (in ohms) 1 755765 117521 67650 10569 1377 145 65 34
Tab.10 Outside sensor
Temperature (in °C) -30 -15 -5 0 10 20 30 50
Resistance (in ohms) 13034 5861 3600 2857 1840 1218 827 407
3.3 Dimensions and connections
Fig.2 Dimensions and connections IX 145–50 and IX 145–70
247
440
600
497
211
630
31.5 98
173
147
MW-5000817-1
849
50
271
371
555
586
440
1
2
4
3
5
1Heating circuit return (G1")
2Heating circuit flow (G1")
3Gas inlet (G3/4”)
4Condensate discharge (DN18)
3 Technical specifications
14 IX 7702703 - v04 - 05092019

5Flue gas outlet (80/125) (1) Adjustable feet
Fig.3 Dimensions and connections IX 145–90 and IX 145–110
1128
99
300
440
600
260
271
371
699
31.5 486
107
630
98 54.5
89
5
3
4
1
2
MW-5000816-1
1Heating circuit return (G1-1/2")
2Heating circuit flow (G1-1/2")
3Gas inlet (G1")
4Condensate discharge (DN18)
5Flue gas outlet (110/160)
(1) Adjustable feet
3 Technical specifications
7702703 - v04 - 05092019 IX 15

3.4 Electrical diagram
Fig.4 Electrical diagram IX 145–50 and IX 145–70
1
2
3
4
Aux 1-2 230 V TA TS
L N T1 T2 L LN N S1 S2 L N
O
N
P
L
K
J
I
M
H
G
F
E
L
N
A
C
B
D
3
41A
2A
1
1
2
2
11
10 12 9
8
7
6
1
2
3
4
HMI
5
MW-3000003-04
Earth POP rivet
APower supply 230 V 50 Hz
BPower supply auxiliary circuit 1
CPower supply auxiliary circuit 2
DRoom thermostat
EHeating circuit pump
FDomestic hot water pump
GSafety contact
HBoiler pump
IAuxiliary sensor 1
JAuxiliary sensor 2
KOutside sensor
LDomestic hot water sensor
MRoom temperature sensor 1
NRoom temperature sensor 2
ORoom temperature sensor 3
PBoiler pump modulation (PWM)
1Flow temperature sensor
2Return temperature sensor
3Hydraulic pressure sensor
4Flue gas sensor
5Control panel display
6Ionisation probe
7Spark plug
8Igniter
9Gas valve
10 Safety thermostat
11 Fan
12 Safety thermostat on the combustion chamber door
3 Technical specifications
16 IX 7702703 - v04 - 05092019

Fig.5 Electrical diagram IX 145–90 and IX 145–110
1
2
3
4
Aux 1-2 230 V TA TS
L N T1 T2 L LN N S1 S2 L N
O
N
P
M
L
K
J
I
H
G
F
E
L
N
A
C
B
D
3
41A
2A
1
1
2
2
11
10 12 13 9
8
7
6
1
2
3
4
HMI
5
MW-3000004-04
Earth POP rivet
APower supply 230V 50Hz
BPower supply auxiliary circuit 1
CPower supply auxiliary circuit 2
DRoom thermostat
EHeating circuit pump
FDomestic hot water pump
GSafety contact
HBoiler pump
IAuxiliary sensor 1
JAuxiliary sensor 2
KOutside sensor
LDomestic hot water sensor
MRoom temperature sensor 1
NRoom temperature sensor 2
ORoom temperature sensor 3
PBoiler pump modulation (PWM)
1Flow temperature sensor
2Return temperature sensor
3Hydraulic pressure sensor
4Flue gas sensor
5Control panel display
6Ionisation probe
7Spark plug
8Igniter
9Gas valve
10 Safety thermostat
11 Fan
12 Thermal fuse
13 Safety thermostat on the combustion chamber door
3 Technical specifications
7702703 - v04 - 05092019 IX 17

4 Description of the product
4.1 General description
IX floor-standing condensing gas boilers have the following characteristics:
Low pollutant emissions
High efficiency heating
Electronic control panel
Flue gas discharge by a forced flue or chimney type connection.
Flue gas discharge by a forced flue, chimney or bi-flow type connection.
Perfectly suitable for cascade systems with several boilers.
4.2 Operating principle
4.2.1 Circulating pump
Important
The benchmark for the most efficient circulating pumps is EEI ≤
0.20.
4.2.2 Gas/air setting
The casing fitted to the boiler is also used as an air box. Air is drawn in by
the fan and gas injected into the Venturi by the fan intake. The fan speed
is modulated according to the settings, the heat demand and the actual
temperatures measured by the temperature sensors. The gas and air are
mixed in the Venturi. The gas/air ratio command function accurately
adjusts the quantities of gas and air required. This provides optimum
combustion over the entire output range. The gas/air mixture is sent to the
burner, located upstream of the heat exchanger.
4.2.3 Low-loss header (accessory)
1Low-loss header kit
Low-loss headers are available for all boiler outputs.
The low-loss header is a component which enables the primary circuit and
secondary circuit to have a hydraulic system independent from the boiler
installation.
It offers the following advantages:
It creates a hydraulically neutral point.
It ensures the primary flow rate is controlled.
It allows good control of the secondary flow rate and pressures,
particularly when several circuits are operating independently from one
another.
It provides the option of having secondary circuits at different
temperatures.
It allows air to be evacuated thanks to its degassing function
It enables decanting and removal of sludge via the sludge removal
function.
Fig.6
MW-3000144-04
1
4 Description of the product
18 IX 7702703 - v04 - 05092019

Fig.7 Functional diagram of a boiler with a low-loss header
MW-1000021-06
3
71
5
9
8
62
4
10
1Boiler
2Low-loss header kit
3Low-loss header
4Air vent
5Drain valve
6Heating circuit flow
7Heating circuit return
8Safety valve
9Modulating circulating pump
10 Non-return valve
4.2.4 Plate heat exchanger (accessories)
The main advantage of the plate heat exchanger is that it hydraulically
isolates the primary and secondary circuits. It also enables the boiler body
to be protected from any contamination found in the secondary heating
circuit water.
Fig.8
MW-2000828-01
4 Description of the product
7702703 - v04 - 05092019 IX 19

Fig.9 Functional diagram of a boiler with plate heat exchanger
MW-5000803-01
3
7
1
5
9
8
62
4
10
11
12
13
1Boiler
2Plate heat exchanger kit
3Plate heat exchanger
4Air vent
5Drain valve
6Heating circuit flow
7Valve
8Safety valve
9Modulating circulating pump
10 Non-return valve
11 Drain valve
12 Valve
13 Expansion vessel
4.2.5 System in cascade
The boiler is ideally suited for a cascade system configuration. Use a
boiler/cascade connection kit to connect boilers in cascade.
Important
Please contact the After Sales Service for further information.
Fig.10 Boilers in cascade
MW-3000145-01
4 Description of the product
20 IX 7702703 - v04 - 05092019