DeDietrich IX 245-130 Troubleshooting guide

PROJECT
S U S T A I N A B L E C O M F O R T ®
MW-2000818-1
en
Installation, User and Service Manual
Floor-standing condensing gas boiler
IX 245–130
IX 245–150
IX 245–200
IX 245–250

Contents
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3 Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.3.3 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1 Symbols used in the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.2 Symbols used on the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.1 Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.1.2 EC Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.3 Gas category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.4 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.2.1 Other technical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2.2 Sensor specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.3 Dimensions and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3.1 IX 245–130 and IX 245–150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3.2 IX 245–200 and IX 245–250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.1 IX 245–130 and IX 245–150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.2 IX 245–200 and IX 245–250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.2 Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2.1 Circulating pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2.2 Gas/air setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2.3 Low-loss header (accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.2.4 Plate heat exchanger (accessories) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.2.5 System in cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.2.6 Settings and safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.3 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3.1 IX 245–130 and IX 245–150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3.2 IX 245–200 and IX 245–250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.3 Main burner components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4.4 Control panel description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.4.1 Description of the keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.4.2 Description of the symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.5 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.6 Accessories & options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5 Before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.1 Installation regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2 Installation requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
5.2.1 Water treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
5.2.2 Gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
5.2.3 Electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2.4 Circulating pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3 Choice of the location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.3.1 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3.2 Overall space needed for the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
5.3.3 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.3.4 Selecting the position for the outside temperature sensor (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
5.4 Transport and unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.4.1 IX 245–130 and IX 245–150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.4.2 IX 245–200 and IX 245–250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6 Connecting diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Contents
2 IX 7702684 - v04 - 05092019

6.1 One boiler + one direct circuit + one domestic hot water tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.1.1 Hydraulic connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.1.2 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.2 One boiler + one underfloor heating circuit + one direct circuit + one domestic hot water tank . . . . . . . . . . . . . . . . . . 48
6.2.1 Hydraulic connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.2.2 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.2.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.3 Boilers in cascade + one underfloor heating circuit + one direct circuit + one domestic hot water tank . . . . . . . . . . . . 50
6.3.1 Hydraulic connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.3.2 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.3.3 Connecting boilers in cascade with a OCI 345 module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.3.4 Configuration for 1 master boiler and 1 slave boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.3.5 Configuration for a master boiler and slave boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.4 Controlling a boiler in 0-10 V mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
6.4.1 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.4.2 Configuring the boiler control in 0–10 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
7 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.2 Accessing the internal boiler components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.3 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
7.3.1 Connecting the heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.3.2 Connecting the expansion vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.3.3 Connecting the condensate discharge pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
7.4 Gas connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7.4.1 IX 245–130 and IX 245–150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7.4.2 IX 245–200 and IX 245–250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7.5 Air supply/flue gas outlet connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
7.5.1 Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7.5.2 Coaxial pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
7.5.3 Flue gas system accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
7.5.4 Pipes in cascade (not provided) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
7.5.5 Lengths of the air/flue gas pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.6 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
7.6.1 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
7.6.2 Recommended cable cross section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
7.6.3 Wiring the terminal blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
7.6.4 Description of the power supply terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.6.5 Description of the sensor terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.7 Filling the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
7.7.1 IX 245–130 and IX 245–150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.7.2 IX 245–200 and IX 245–250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.7.3 Flushing new installations and installations less than 6 months old . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.7.4 Flushing an existing installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
7.7.5 Filling the siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.8 Completing installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
8 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.2 Check-list before commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.3 Commissioning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.3.1 Checking the gas inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.3.2 Checking the electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.3.3 Checking the hydraulic circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.3.4 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.4 Gas settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
8.4.1 Configuring the fan speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
8.4.2 Setting the air/gas ratio (maximum heat input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
8.4.3 Setting the air/gas ratio (reduced heat input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
8.4.4 Gas valve basic settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8.4.5 Conversion to propane (G31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
9 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
9.1 Use of the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
9.1.1 Modifying the user parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
9.1.2 Modifying the installer parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
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9.2 Starting up the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
9.3 Stopping the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.3.1 Putting the boiler in Standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.4 Frost Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
9.4.1 Activating the Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.5 Special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
10 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.1 List of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.1.1 Shortcuts menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.1.2 Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
10.1.3 List of user parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.1.4 List of installer parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
10.2 Setting the parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
10.2.1 Setting the date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
10.2.2 Selecting the language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
10.2.3 Changing the operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
10.2.4 Forcing domestic hot water production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
10.2.5 Setting the room temperature set point (On mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
10.2.6 Modifying the domestic hot water production mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
10.2.7 Setting the domestic hot water temperature set point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.2.8 Setting the room temperature set point (Reduced mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.2.9 Programming a Holiday period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.2.10 Using the fixed-speed boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
10.2.11 Selecting a heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
10.2.12 Locking/Unlocking parameter modification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.2.13 Timer programme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.2.14 Setting a temporary heating flow temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
10.2.15 Managing boilers in cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10.3 Accessing the information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
11 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
11.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
11.2 Standard inspection and maintenance operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
11.2.1 Performing the annual service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
11.2.2 Removing the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
11.2.3 Cleaning the heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
11.2.4 Checking the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
11.2.5 Cleaning the siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
11.2.6 Refitting the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
11.2.7 Thermal fuse in the heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
11.2.8 Check the combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
11.2.9 Cleaning the plate heat exchanger (optional kit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
11.2.10 Cleaning the low-loss header (optional kit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
11.3 Replacing the 6.3 A fuses on the electrical terminal blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
12 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
12.1 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
12.1.1 List of error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
12.2 Accessing the error memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
12.3 Automatic error code clearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
12.4 Clearing error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139
13 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
13.1 Decommissioning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
13.2 Recommissioning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
14 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
14.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
14.2 Spare parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
14.2.1 Spare parts lists for IX 245–130 and IX 245–150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
14.2.2 Spare parts lists for IX 245–200 and IX 245–250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
15 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
15.1 Energy savings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
15.2 Room thermostat and settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
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16 Disposal and recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
17 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
17.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
17.2 Terms of warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
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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
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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
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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 or have the boiler and heating system
drained by a qualified professional 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
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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
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Failure to abide by the instructions on installing and
maintaining the appliance.
Failure to abide by the instructions on using the
appliance.
Faulty or insufficient maintenance of the appliance.
1.3.2 Installer's liability
The installer is responsible for the installation and initial
commissioning of the appliance. The installer must
observe the following instructions:
Read and follow the instructions given in the manuals
provided with the appliance.
Install the appliance in compliance with prevailing
legislation and standards.
Carry out initial commissioning and any checks
necessary.
Explain the installation to the user.
If maintenance is necessary, warn the user of the
obligation to check the appliance and keep it in good
working order.
Give all the instruction manuals to the user.
1.3.3 User's liability
To guarantee optimum operation of the system, you
must abide by the following instructions:
Read and follow the instructions given in the manuals
provided with the appliance.
Call on a qualified professional to carry out installation
and initial commissioning.
Get your installer to explain your installation to you.
Have the required inspections and maintenance
carried out by a qualified installer.
Keep the instruction manuals in good condition close
to the appliance.
1 Safety
10 IX 7702684 - v04 - 05092019

2 Symbols used
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 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 Symbols used
7702684 - v04 - 05092019 IX 11

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
12 IX 7702684 - v04 - 05092019

CE number 0085CP0089
NOx class Class 6
Gas and pressures Natural gas (G20) - 20 mbar
Natural gas (G25) - 25 mbar
Natural gas (G27) - 20 mbar
Propane (G31) - 37/50 mbar
Tab.2 Type of flue gas connection
Boiler model Type of flue gas connection
IX 245–130
IX 245–150
B23 – B23(P)
C13(X)
C33(X)
C43(X)
C53(X)
C63(X)
C83(X)
IX 245–200
IX 245–250
B23 – B23(P)
C13
C33
C43
C53
C63
C83
3.2 Technical data
Tab.3 General
Boiler speed Unit IX 245–130 IX 245–150 IX 245–200 IX 245–250
Useful heat output at 80/60°C
Heating mode Minimum kW 24.3 28.1 31.0 38.8
Useful heat output at 80/60°C
Heating mode Maximum kW 121.5 140.3 185.9 232.8
Useful heat output at 50/30 °C
Heating mode Minimum kW 26.2 30.2 33.1 41.7
Useful heat output at 50/30 °C
Heating mode Maximum kW 130.6 150.9 200 250
Heat output
Heating mode Minimum kW (LHV) 24.8 28.6 31.8 40
Heat output
Heating mode Maximum kW (LHV) 123.8 143 191 240
Heat output
Heating mode Minimum kW (HHV) 27.5 31.7 35.3 44.4
Heat output
Heating mode Maximum kW (HHV) 137.4 158.7 212 266.6
Efficiency at 80/60 °C
Heating mode under full load Maximum % 98.1 98.1 97.32 97.02
Efficiency at 50/30 °C Heating mode un
der full load % 105.5 105.5 104.2 104.2
Efficiency
Return temperature 30 °C
Heating mode un
der part load % 108.5 108.5 109.1 109.1
Tab.4 Characteristics of the heating circuit
Unit IX 245–130 IX 245–150 IX 245–200 IX 245–250
Water content (excluding expansion vessel) litre 10 11 13 15
Minimum operating pressure MPa (bar) 0.05 (0.5) 0.05 (0.5) 0.05 (0.5) 0.05 (0.5)
3 Technical specifications
7702684 - v04 - 05092019 IX 13

Unit IX 245–130 IX 245–150 IX 245–200 IX 245–250
Maximum operating pressure (PMS) MPa (bar) 0.6 (6) 0.6 (6) 0.6 (6) 0.6 (6)
Maximum water temperature °C 85 85 85 85
Maximum operating temperature °C 80 80 90 90
Tab.5 Data on the gases and combustion gases
For gas flow rates at 15°C and
1013.25 hPA
Boiler speed Unit IX 245–130 IX 245–150 IX 245–200 IX 245–250
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
Maximum pressure (G25) mbar 30 30 30 30
Minimum gas pressure (G27) mbar 16 16 16 16
Nominal pressure (G27) mbar 20 20 20 20
Maximum pressure (G27) mbar 23 23 23 23
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)
(Hi) Minimum m³/h 2.6 3.0 3.4 4.2
Consumption of natural gas (G20)
(Hi) Maximum m³/h 13.1 15.1 20.2 25.4
Consumption of natural gas (G25) Minimum m³/h 3.1 3.5 3.9 4.9
Consumption of natural gas (G25) Maximum m³/h 15.2 17.6 23.5 29.5
Consumption of natural gas (G27) Minimum m³/h 3.2 3.7 4.1 5.2
Consumption of natural gas (G27) Maximum m³/h 16.0 18.5 24.7 31.0
Consumption of Propane (G31) (Hi) Minimum kg/h 1.0 1.2 2.5 3.1
Consumption of Propane (G31) (Hi) Maximum kg/h 5.1 5.9 14.8 18.6
NOx according to EN 15502–1 Class 6 mg/kWh
(HHV) 17 23 33.5 35.1
Flue gas mass flow rate (G20) Minimum kg/h 43.2 50.4 54 69
Flue gas mass flow rate (G20) Maximum kg/h 201.6 230.4 322 411
Maximum flue gas temperature Minimum °C 70 70 80 80
Tab.6 Electrical specifications
Unit IX 245–130 IX 245–150 IX 245–200 IX 245–250
Power supply voltage VAC 230 230 230 230
Maximum absorbed power - Full load W 187 283 242 369
Maximum absorbed power - Part load W 51 52 47 48
Maximum absorbed power - Stand-by W 3 3 3 3
Tab.7 Other specifications
Unit IX 245–130 IX 245–150 IX 245–200 IX 245–250
Ingress protection rating IPX1B IPX1B IPX1B IPX1B
Weight empty kg 126 132 212 232
3 Technical specifications
14 IX 7702684 - v04 - 05092019

3.2.1 Other technical parameters
Tab.8 Technical parameters for boiler space heaters
Product name IX 245–130 IX 245–150 IX 245–200 IX 245–250
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 No No
Rated heat output Prated kW 122 140 186 233
Useful heat output at rated heat output
and high temperature regime(2)
P4 kW 121.5 140.0 186.0 233.0
Useful heat output at 30% of rated heat
output and low temperature regime(1)
P1 kW 40.4 46.5 36.0 46.0
Seasonal space heating energy efficiency ƞs % ----
Useful efficiency at rated heat output and
high temperature regime(2)
ƞ4 % 88.4 88.4 87.7 87.4
Useful efficiency at 30% of rated heat
output and low temperature regime(1)
ƞ1 % 97.8 97.8 98.3 98.3
Auxiliary electricity consumption
Full load elmax kW 0.187 0.283 0.242 0.369
Part load elmin kW 0.051 0.052 0.047 0.048
Stand-by PSB kW 0.004 0.004 0.004 0.004
Other specifications
Standby heat loss Pstby kW 0.078 0.083 0.095 0.117
Ignition burner power consumption Pign kW - - - -
Annual energy consumption QHE GJ - - - -
Sound power level, indoors LWA dB 60 63 65 68
Emissions of nitrogen oxides NOxmg/kWh 17 23 34 35
(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.9 Heating flow sensor and return sensor
Temperature (in °C) 30 65 85
Resistance (in ohms) 8059 2084 1070
Tab.10 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.11 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 Technical specifications
7702684 - v04 - 05092019 IX 15

3.3 Dimensions and connections
3.3.1 IX 245–130 and IX 245–150
Fig.2
172.5
260.5
517.5
167.5
98.5
31.5 486
98.5
38.5
25
630
107
78.5
1227
1
2
3
4
5
6
89
94
305.5
600
440
991128
300
MW-4000315-1
1Flue gas outlet (110/160 mm)
2Heating circuit flow (G1"1/2)
3Gas inlet (G1")
4Heating circuit return (G1"1/2)
5Condensate discharge (diameter 32 mm)
6Drain (1/2”)
3.3.2 IX 245–200 and IX 245–250
Fig.3
1459
127
432
98.5
1
2
51
721166
1238
600
414
215.5
292.5
305.5
937.5
38
38.5
98.5
25
80
104
3
5
4
7
6
300
300
84
1104 MW-4000316-1
1Combustion air inlet (150 mm)
2Flue gas outlet (150 mm)
3Heating circuit flow (R2” or DN50 PN6 flange)
4Gas inlet (G1"1/2)
5Condensate discharge (diameter 32 mm)
6Heating circuit return (R2” or DN50 PN6 flange)
7Drain (1/2”)
3 Technical specifications
16 IX 7702684 - v04 - 05092019

3.4 Electrical diagram
3.4.1 IX 245–130 and IX 245–150
Fig.4
MW-5000718-2
3
4
1A
2A
1
1
2
2
L
N
1
2
3
4BL
BR
BL
BR G/Y BR BK
BR
BK
BL
BR
WH
BK
WH
BK
WH
BK
BK
WH
BL
BL BL
BR BR
BL BL
G/Y
G/Y
BR
BL
BL
BR
VT
YW
BK
BR
GN
GN
GN
GN
BK
BR
BK
YW
BK
VT
GN
BR
YW
GY
BK WH
BK
RD
VT
BR
GN
BR
VT
WH
GN
RD
BK
BR
BL
BR
BL
BR
BL
GN
BK
BR
BL
GN
BK
BR
BL
G/Y
BL BL
G/Y
HMI
G/Y
G/Y
G/Y
G/Y
G/Y
BL
BL
BL
BL
BK
BK
RD
GN
GN
RD
PK
GR
PK
GR
RD
RD
RD
RD
A
1
2
3
4
5
6
7
8
WH
BK
BK
G/Y
BL
BR
BL
BR
BL
BR
I
J
K
L
M
P
ON
H
G
F
E
D
C
B
9
10 12
11
BR
BL
G/Y
b
a
1
2
3
1
2
3
1
2
3
BR
13
BR BR
T1 T2 S1 S2
V2
V1
BL
BL
BR
BR
BL BR
14
MW-5000718-3
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 Thermal fuse
13 Safety thermostat on the combustion chamber door
14 Flue gas pressure switch
3 Technical specifications
7702684 - v04 - 05092019 IX 17

3.4.2 IX 245–200 and IX 245–250
Fig.5
MW-4000294-2
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
13 Safety thermostat on the combustion chamber door
14 Flue gas pressure switch
3 Technical specifications
18 IX 7702684 - v04 - 05092019

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
Tab.12 Operating principle for gas/air setting
Boiler model Operating principle
IX 245–130
IX 245–150
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.
IX 245–200
IX 245–250
An air intake hose conveys the air directly to the air intake nozzle on the venturi inlet.
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 Description of the product
7702684 - v04 - 05092019 IX 19

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.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
Fig.6
MW-4000255-2
1
4 Description of the product
20 IX 7702684 - v04 - 05092019