Riello RX 700 S/PV Quick start guide

20093868 (6) - 07/2017
Installation, use and maintenance instructions
Premix gas burners
Modulating operation
CODE MODEL
20092672 - 20092651 RX 700 S/PV
20092611 - 20092613 RX 850 S/PV
20082125 RX 1000 S/PV
GB

Original instructions

1 20093868
GB
Contents
1 Information and general warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Information about the instruction manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.2 General dangers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.3 Other symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.4 Delivery of the system and the instruction manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Guarantee and responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.1 Owner’s responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety and prevention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Personnel training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Technical description of the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Electrical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Burner models designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Packaging - weight - Approximate measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.5 Burner dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6 Firing rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.7 Output supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.8 Burner description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.9 Burner equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.10 Burner controls (LME71...) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.10.1 Indication of diagnostics mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.1 Notes on safety for the installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2 Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3 Preliminary checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4 Operating position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.5 Preparing the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5.1 Boring the boiler plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5.2 Head length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.6 Securing the burner to the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.7 Probe-electrodes installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.8 Fuel supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.8.1 Gas line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.8.2 Gas pilot line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.9 Electrical wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.9.1 Supply cables and external connections passage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.9.2 Factory wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.9.3 Wiring diagram (customer installation). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.9.4 Positioning the step-down transformer kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.10 Opening sequence of the fuse-holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5 Calibration and operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1 Operator panel with LCD AZL 21... display for control box LME 71... with PME 71.901... . . . . . . . . . . . . . . . . . . . . . 33
5.2 Operator panel with LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.3 Visualisation and programming modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.3.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.3.2 Displaying the operating position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.3.3 Fault messages, display errors and information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.4 Info level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.4.1 Displaying the Info level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.5 Displaying the Info values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.5.1 Identification date. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.5.2 Identification number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.5.3 Burner identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.5.4 Number of resettable start-ups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.5.5 Total number of start-ups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

20093868 2
GB
Contents
5.5.6 End of the Info level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.6 Service level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.6.1 Displaying the Service values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.7 Parameters level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.7.1 Entering the password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.7.2 Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.7.3 Restore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.8 Parameter modes of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.8.1 Parameters without index, with direct display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.8.2 Parameters without index, without direct display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5.8.3 Parameters with index, with or without direct display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6 Start-up, calibration and operation of the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.1 Notes on safety for the first start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.2 Adjustments prior to ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.3 Fan adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.3.1 Pre-setting of the points P0 (ignition), P1 (minimum) and P2 (maximum). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.4 Burner start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.4.1 First burner start-up (manual operation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.4.2 Checking the modulating operation (automatic operation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.5 Burner adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.5.1 Optimum calibration values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.6 Switching off the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6.7 Load controller inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6.8 Combustion head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.1 Notes on safety for the maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.2 Maintenance programme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.2.1 Maintenance frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.2.2 Checking and cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.2.3 Measuring circuit for detector current measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.3 Safety components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.4 Recommended preventive maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7.5 Opening and closing the burner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8 Operation, indication, diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.1 Control sequence in the event of fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.2 Error code list with operation via internal LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.3 Resetting of burner control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.3.1 Diagnostics of cause of fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.3.2 First startup with a new program module or in case of replacement of program module . . . . . . . . . . . . . . . . . . . . . . 65
8.4 Manual restore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.4.1 Errors during the restore process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
8.4.2 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
9 List of parameters PME71.901... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
A Appendix - Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
B Appendix - Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
C Appendix - Burner start up report. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Information and general warnings
3 20093868
GB
1.1 Information about the instruction manual
1.1.1 Introduction
The instruction manual supplied with the burner:
 is an integral and essential part of the product and must not be
separated from it; it must therefore be kept carefully for any
necessary consultation and must accompany the burner even
if it is transferred to another owner or user, or to another sys-
tem. If the manual is lost or damaged, another copy must be
requested from the Technical Assistance Service of the area;
 is designed for use by qualified personnel;
 offers important indications and instructions relating to the
installation safety, start-up, use and maintenance of the
burner.
Symbols used in the manual
In some parts of the manual you will see triangular DANGER signs.
Pay great attention to these, as they indicate a situation of potential
danger.
1.1.2 General dangers
The dangers can be of 3 levels, as indicated below.
1.1.3 Other symbols
Abbreviations used
Ch. Chapter
Fig. Figure
Page Page
Sec. Section
Tab. Table
1 Information and general warnings
WARNING
Read these instructions and save for reference!
These installation and operating instructions form
part of the unit and must kept in good and legible
conditions on site at all times.
DANGER
Maximum danger level!
This symbol indicates operations which, if not car-
ried out correctly, cause serious injury, death or
long-term health risks.
WARNING
This symbol indicates operations which, if not car-
ried out correctly, may cause serious injury, death
or long-term health risks.
CAUTION
This symbol indicates operations which, if not car-
ried out correctly, may cause damage to the ma-
chine and/or injury to people.
DANGER
DANGER: LIVE COMPONENTS
This symbol indicates operations which, if not car-
ried out correctly, lead to electric shocks with lethal
consequences.
DANGER: FLAMMABLE MATERIAL
This symbol indicates the presence of flammable
materials.
DANGER: BURNING
This symbol indicates the risks of burns due to high
temperatures.
DANGER: CRUSHING OF LIMBS
This symbol indicates the presence of moving
parts: danger of crushing of limbs.
WARNING: MOVING PARTS
This symbol indicates that you must keep limbs
away from moving mechanical parts; danger of
crushing.
DANGER: EXPLOSION
This symbol signals places where an explosive at-
mosphere may be present. An explosive atmos-
phere is defined as a mixture - under atmospheric
conditions - of air and flammable substances in the
form of gases, vapours, mist or dust in which, after
ignition has occurred, combustion spreads to the
entire unburned mixture.
PERSONAL PROTECTION EQUIPMENT
These symbols indicate the equipment that must be
worn and kept by the operator for protection against
threats against safety and/or health while at work.
OBLIGATION TO ASSEMBLE THE COVER AND
ALL THE SAFETY AND PROTECTION DEVICES
This symbol signals the obligation to reassemble
the cover and all the safety and protection devices
of the burner after any maintenance, cleaning or
checking operations.
ENVIRONMENTAL PROTECTION
This symbol gives indications for the use of the ma-
chine with respect for the environment.
IMPORTANT INFORMATION
This symbol indicates important information that
you must bear in mind.
 This symbol indicates a list.

20093868 4
GB
Information and general warnings
1.1.4 Delivery of the system and the instruction
manual
When the system is delivered, it is important that:
 the instruction manual is delivered to the user by the system
manufacturer, with the recommendation to keep it in the room
where the heat generator is to be installed.
 The instruction manual shows:
– the serial number of the burner;
– the address and telephone number of the nearest Assis-
tance Centre.
– the date of installation;
 The system supplier must carefully inform the user about:
– the use of the system;
– any further tests that may be required before activating the
system;
– maintenance, and the need to have the system checked at
least once a year by a representative of the manufacturer or
another specialised technician.
To ensure a periodic check, the manufacturer recommends
the drawing up of a Maintenance Contract.
1.2 Guarantee and responsibility
The manufacturer guarantees its new products from the date of in-
stallation, in accordance with the regulations in force and/or the
sales contract. At the moment of the first start-up, check that the
burner is integral and complete.
In particular, the rights to the guarantee and the responsibility will
no longer be valid, in the event of damage to things or injury to peo-
ple, if such damage/injury was due to any of the following causes:
 incorrect installation, start-up, use and maintenance of the
burner;
 improper, incorrect or unreasonable use of the burner;
 intervention of unqualified personnel;
 carrying out of unauthorised modifications on the equipment;
 use of the burner with safety devices that are faulty, incorrectly
applied and/or not working;
 installation of untested supplementary components on the
burner;
 powering of the burner with unsuitable fuels;
 faults in the fuel supply system;
 continuation of use of the burner when a fault has occurred;
 repairs and/or overhauls incorrectly carried out;
 modification of the combustion chamber with inserts that pre-
vent the regular development of the structurally established
flame;
 insufficient and inappropriate surveillance and care of those
burner components most likely to be subject to wear and tear;
 use of non-original components, including spare parts, kits,
accessories and optional;
 force majeure.
The manufacturer furthermore declines any and every respon-
sibility for the failure to observe the contents of this manual.
..........................................................................................
...........................................................................................
...........................................................................................
...........................................................................................
..........................................................................................
WARNING
Failure to observe the information given in this man-
ual, operating negligence, incorrect installation and
carrying out of non authorised modifications will re-
sult in the annulment by the manufacturer of the
guarantee that it supplies with the burner.

Information and general warnings
5 20093868
GB
1.2.1 Owner’s responsibility
Please pay attention to the Safety Warnings contained within
this instruction manual. Keep this manual for your records and
provide it to your qualified service agency for use in profession-
ally setting up and maintaining your burner.
Your burner will provide years of efficient operation if it is profes-
sionally installed and maintained by a qualified service techni-
cian. If at any time the burner does not appear to be operating
properly, immediately contact your qualified service agency for
consultation.
We recommend annual inspection/service of your gas heating
system by a qualified service agency.
Failure to follow these instructions, misuse, or incorrect adjust-
ment of the burner could lead to equipment malfunction and re-
sult in asphyxiation, explosion or fire.
WARNING
If you smell gas:
 Do not touch any electrical items.
 Open all windows.
 Close all gas supply valves.
 Contact your local gas authority immediately.
• Do not store flammable or hazardous materials
in the vicinity of fuel burning appliances.
• Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, personal injury or death.
• Refer to this manual for instructional or addition-
al information.
• Consult a certified installer, service representa-
tive or the gas supplier for further assistance.
• Burner shall be installed in accordance with
manufacturers requirements as outlined in this
manual, local codes and authorities having ju-
risdiction.
WARNING
CANADA: The equipment shall be installed in ac-
cordance with the Provincial Installation Require-
ments, or in their absence, the CAN/CGA B149.1 &
B149.2 Installation Codes shall prevail. Authorities
having jurisdiction should be consulted before in-
stallation is made.
USA: This burner must conform with local codes,
or, in the absence of local codes, with the Standard:
National Fuel Gas Code NFPA 54/ANSI Z223.1 or
International Fuel Gas Code, as appropriate.
If an external electrical source is utilized, the con-
version burner, when installed, must be electrically
grounded in accordance with local codes or, in the
absence of local codes, with the national Electrical
Code, ANSI/NFPA No. 70-1990 and CSA Electrical
Code C22.2 No.0 M1982 & C22.2 No 3. 1988. Au-
thorities having jurisdiction should be consult-
ed before installations are made. The owner is
required to retain this manual for future refer-
ence.

20093868 6
GB
Safety and prevention
2.1 Introduction
The burners have been designed and built in compliance with cur-
rent regulations and directives, applying the known technical rules
of safety and envisaging all the potential danger situations.
It is necessary, however, to bear in mind that the imprudent and
clumsy use of the equipment may lead to situations of death risk for
the user or third parties, as well as the damaging of the burner or
other items. Inattention, thoughtlessness and excessive confi-
dence often cause accidents; the same applies to tiredness and
sleepiness.
It is a good idea to remember the following:
 The burner must only be used as expressly described. Any
other use should be considered improper and therefore dan-
gerous.
In particular:
it can be applied to boilers operating with water, steam, diathermic
oil, and to other uses expressly foreseen by the manufacturer;
the type and pressure of the fuel, the voltage and frequency of the
electrical power supply, the minimum and maximum deliveries for
which the burner has been regulated, the pressurisation of the
combustion chamber, the dimensions of the combustion chamber
and the room temperature must all be within the values indicated in
the instruction manual.
 Modification of the burner to alter its performance and destina-
tions is not allowed.
 The burner must be used in exemplary technical safety condi-
tions. Any disturbances that could compromise safety must be
quickly eliminated.
 Opening or tampering with the burner components is not
allowed, apart from the parts requiring maintenance.
 Only those parts envisaged by the manufacturer can be
replaced.
2.2 Personnel training
The user is the person, body or company that has acquired the ma-
chine and intends to use it for the specific purpose. He is responsi-
ble for the machine and for the training of the people working
around it.
The user:
 undertakes to entrust the machine exclusively to suitably
trained and qualified personnel;
 undertakes to inform his personnel in a suitable way about the
application and observance of the safety instructions. With
that aim, he undertakes to ensure that everyone knows the
use and safety instructions for his own duties;
 Personnel must observe all the danger and caution indications
shown on the machine.
 Personnel must not carry out, on their own initiative, opera-
tions or interventions that are not within their province.
 Personnel must inform their superiors of every problem or
dangerous situation that may arise.
 The assembly of parts of other makes, or any modifications,
can alter the characteristics of the machine and hence com-
promise operating safety. The manufacturer therefore declines
any and every responsibility for any damage that may be
caused by the use of non-original parts.
In addition:
2 Safety and prevention
WARNING
The manufacturer guarantees safety and proper
functioning only if all burner components are intact
and positioned correctly.
 must take all the measures necessary to pre-
vent unauthorised people gaining access to the
machine;
 the user must inform the manufacturer if faults
or malfunctioning of the accident prevention
systems are noticed, along with any presumed
danger situation;
 personnel must always use the personal pro-
tective equipment envisaged by legislation and
follow the indications given in this manual.

Technical description of the burner
7 20093868
GB
3.1 Technical data
Tab. A
(1) Reference conditions: ambient temperature 68 °F (20°C) - Barometric pressure 394” WC - Altitude 329 ft.
(2) Pressure at test point 6)(Fig. 9 at page 11) with zero pressure in the combustion chamber and maximum burner output.
3.2 Electrical data
Tab. B
3.3 Burner models designation
Tab. C
3 Technical description of the burner
Model RX 700 S/PV RX 850 S/PV RX 1000 S/PV
Output (1)
Delivery (1)
max. MBtu/hr
kW
2700
781
3250
940
4535
1330
min. MBtu/hr
kW
450
132
565
165
800
235
Fuel
- Max. delivery
- Gas head pressure at max. delivery (2)
- Supply pressure
type
SCFH
“wc
“wc
Natural gas Propane
2700 1080
- 0.45 - 0.29
7 - 14 7 - 14
Natural gas Propane
3250 1300
- 0.91 - 0.63
7 - 14 7 - 14
Natural gas Propane
4535 1814
- 1.9 - 0.96
7 - 14 7 - 14
Operation Modulating
Standard applications Boilers: water, steam, thermal oil
Ambient temperature °F 32 - 104 (0 - 40 °C)
Combustion air temperature °F max 140 (60 °C)
Model RX 700-850 S/PV RX 700-850 S/PV RX 1000 S/PV
Control circuit power supply V/Ph/Hz 120/1/60
Main power supply (+/- 10%) V/Ph/Hz 120/1/60 208-240/1/60 460/3/60
Fan motor rpm
V
W
HP
A
4800
115 (100...130)
1200
1.61
13
4800
230 (208...240)
1150
1.54
5.7
6100
400(380...480)
2400
3.22
4.0
Ignition transformer V1 - V2
I1 - I2
120 V - 2x12 kV
0.51 A - 30 mA
Electrical power consumption W1200 1150 2400
Electrical control circuit consumption W max 750 750 750
Total electrical consumption W1950 1900 3150
Electrical protection NEMA 1
Model Code Voltage Fan motor starting Flame safeguard
RX 700 S/PV 20092672 120/1/60 Direct Burner mounted
20092651 208-240/1/60
RX 850 S/PV 20092611 120/1/60 Direct Burner mounted
20092613 208-240/1/60
RX 1000 S/PV 20082125 460/3/60 Direct Burner mounted

20093868 8
GB
Technical description of the burner
3.4 Packaging - weight - Approximate measurements
The packaging of the burner (Fig. 1) rests on a wooden platform
that is particularly suitable for lift trucks. The overall dimensions of
the packaging are shown in the Tab. D.
The weight of the burner complete with its packaging is shown in
Tab. D.
Tab. D
3.5 Burner dimensions
The maximum dimensions of the burner are given in Fig. 2.
Bear in mind that, in order to inspect the combustion head, the
burner must be pulled back.
Tab. E
3.6 Firing rates
During operation, burner output varies between:
–aMAXIMUM OUTPUT, which must not be greater than the
maximum limit given on the diagram,
–andaMINIMUM OUTPUT, which must not be lower than the
minimum limit in the diagram.
Tab. F
inch A B C lbs
All models 55 1/8“ 22 13/16“ 27 3/8“ 220
Fig. 1
D36
A
B
C
E
LF
G
H
I
Fig. 2
20092843
inch A B E F G H I L
RX 700 S/PV 26 1/32“ 19 7/32“ 21 3/32“ 21 19/64“ 14 3/16“ 8 1/32“ 14 27/32“ 5 5/16“
RX 850 S/PV 26 1/32“ 19 7/32“ 21 3/32“ 25 31/32“ 18 7/8“ 8 1/32“ 14 27/32“ 5 5/16“
RX 1000 S/PV 26 1/32“ 19 7/32“ 21 3/32“ 25 31/32“ 18 7/8“ 8 1/32“ 14 27/32“ 5 5/16“
WARNING
The firing rate value range has been obtained con-
sidering an ambient temperature of 68 °F (20 °C),
and an atmospheric pressure of 394” WC.
NOx expected emissions on natural gas (expressed in ppm@3% O2)
Riello Burners Sub 30 Sub 20 Sub 9
CO2(%) O2(%) CO2(%) O2(%) CO2(%) O2(%)
All models 8.5 ~ 8.75 5.8 ~ 5.4 8.0 ~ 8.5 6.7 ~ 5.8 7.25 ~ 7.75 8.0 ~ 7.1

Technical description of the burner
9 20093868
GB
Key to lay-out
Tab. G
700 900 1100 1300 1500 1700
0,50
1,00
1,50
2,00
2,50
3,00
3,50
4,00
4,50
5,00
5,50
6,00
2100
1900 2300 2500 2700 2900 3100 3300 3500 3700 3900
500
6,50
43004100
0,00
20093797
Chamber pressure - ‘WC
RX 700 S/PV
Burner output - MBtu/h Fig. 3
A
700 900 1100 1300 1500 1700
0,50
1,00
1,50
2,00
2,50
3,00
3,50
4,00
4,50
5,00
5,50
6,00
2100
1900 2300 2500 2700 2900 3100 3300 3500 3700 3900
500 4100 4300
6,50
0,00
20093807
RX 850 S/PV
Fig. 4
Chamber pressure - ‘WC
Burner output - MBtu/h
A
800 1000 1200 1400 1600 1800
0,50
1,00
1,50
2,00
2,50
3,00
3,50
4,00
4,50
5,00
5,50
6,00
2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600
6,50
0,00
Fig. 5
20093821
RX 1000 S/PV
Chamber pressure - ‘WC
Burner output - MBtu/h
A
NOX < 30 ppm
NOX < 20 ppm
NOX < 9 ppm
Ignition

20093868 10
GB
Technical description of the burner
3.7 Output supplied
The diagrams allow you to establish the power output either using
the number of revolutions of the fan or using the pressure meas-
ured at the pressure test point downstream of the gas valve
P2)(Fig. 22 on page 25).
Example RX 700 S/PV:
– natural gas G20 PCS 1010 Btu/ft3
– pressure on point 1 = - 5 “wc (2nd chart)
– burnt output corresponds to 2000 MBtu/h
Going vertically up the 1st diagram, to intersect the dotted line, you
can estimate the value of the number of revs on the left hand y-axis:
in this case 3600 rpm.
For an exact reading of the number of revs there is a kit for inter-
facing with the control box.
NOTE:
The values indicated in the diagrams are indicative for a setting in
principle.










  
       

          




















Fig. 6
DOC-0084363
Fan speed - rpm
Pressure outlet gas valve - “wc
Thermal power – MBtu/h
G20
LPG
RX 700 S/PV










 
          

            



















Fig. 7
DOC-0084364
Fan speed - rpm
Pressure outlet gas valve - “wc
Thermal power – MBtu/h
G20
LPG
RX 850 S/PV














       

        

















Fig. 8
DOC-0084365
Fan speed - rpm
Pressure outlet gas valve - “wc
Thermal power – MBtu/h
G20
LPG
RX 1000 S/PV

Technical description of the burner
11 20093868
GB
3.8 Burner description
1 Combustion head
2 Ignition electrode
3 Flame sensor probe
4 Gas valve
5 Air/gas mixer in the suction line circuit
6 Gas pressure test point
7 Gas valve conduit - Venturi
8 Gas input
9 Boiler fixing flange
10 Fan
11 Air passage in fan
12 Control box with lockout pilot light
13 Reset button
14 Plug-socket on ionization probe cable
15 Burner terminal strip “X1”
16 Transformer
17 Plate with four hole knock-outs for electrical cable routing
18 Fuse
19 Program module
20 Safety shut off valve
21 Light signalling of mains live state
22 Fan/output relay
23 Display
24 Pilot assembly
25 Burner terminal strip “X2”
Burner lockout may occur:
 control box lockout
If the push-button 13)(Fig. 9) lights up, it indicates that the
burner is in lockout. Press the push button to reset.
12
3
914 12
5
24 25
8
4
6
717
19
23 20 13 21 18 22
16
10
15
11
Fig. 9
20092846

20093868 12
GB
Technical description of the burner
3.9 Burner equipment
Gas tube + connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Insulating gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Instruction booklet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Compensation tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Label (only for LPG operation) . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Hardware for burner assembly:
M10x50 stainless steel nuts (with or without point) . . . . . . . . No. 4
M10x16 zinc-plated washers . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
M10 zinc-plated serrated washers . . . . . . . . . . . . . . . . . . . . . No. 4
M10 zinc-plated nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
WARNING
The equipment shall be installed in accordance with
the Provincial Installation Requirements, or in their
absence, the CGA B149.1 and B149.2 Installation
Codes shall prevail. Authorities having jurisdiction
should be consulted before installations are made.
The owner is required to retain this manual for fu-
ture reference.

Technical description of the burner
13 20093868
GB
3.10 Burner controls (LME71...)
Warning notes
 All activities (mounting, installation and service work, etc.)
must be performed by qualified personnel.
 Before making any wiring changes in the connection area,
completely isolate the plant from mains supply (all-polar dis-
connection). Ensure that the plant cannot be inadvertently
switched on again and that it is indeed dead. If not observed,
there is a risk of electric shock hazard.
 Ensure protection against electric shock hazard by providing
adequate protection for the burner control’s connection termi-
nals (e. g. with dummy plugs for inputs and outputs not used).
If not observed, there is a risk of electric shock hazard.
 The space where the program module (Fig. 11) is located is
defined as plugging space and therefore back-off-hand-proof
when the program module is not fitted.
 If the housing or the area near the operating panel is dam-
aged, the unit must immediately be put out of operation. If not
observed, there is a risk of electric shock hazard.
 Press the buttons on the operating panel only manually with-
out using any tools or pointed objects. If the film of the operat-
ing panel is damaged, there is a risk of electric shock hazard.
To ensure safety and reliability of the LME71... system, the follow-
ing points must also be observed:
– condensation and ingress of humidity must be avoided.
Should such conditions occur, make sure that the unit will be
completely dry before switching on again! If not observed,
there will be a risk of electric shock.
– Static charges must be avoided since they can damage the
unit’s electronic components when touched.
Program module
Mounting notes
 Ensure that the relevant national safety regulations are com-
plied with
 The LME7... basic unit must be secured with fixing screws M4
(UNC32) or M5 (UNC24), observing a maximum tightening
torque of 1.8 Nm and using all 3 fixing points.
The additional mounting surfaces on the housing are provided
to improve mechanical stability.
These must fully rest on the mounting surface to which the unit
is secured.
The flatness of that mounting surface must be within a toler-
ance band of 0.3 mm.
WARNING
To avoid injury to persons, damage to property or
the environment, the following warning notes must
be observed!
The LME71... are safety devices! Do not open, in-
terfere with or modify the unit.
Riello S.p.A. does not assume responsibility for
damage resulting from unauthorized interference!
Additional safety notes contained in other chapters
of this document must be observed as well!
WARNING
Only qualified personnel are allowed to install and
operate the equipment.
Qualified personnel in the context of the safety-re-
lated notes contained in this document are persons
who are authorized to commission, ground and tag
devices, systems and electrical circuits in compli-
ance with established safety practices and stand-
ards.
WARNING
Condensation, formation of ice and ingress of water
are not permitted!
If not observed, there is a risk of impairment of safe-
ty functions and of electric shock hazard.
Fig. 10
S8593
Fig. 11
S8673

20093868 14
GB
Technical description of the burner
Installation notes
 Always run the high-voltage ignition cable separate from the
unit and other cables while observing the greatest possible
distance.
 Do not mix up live and neutral conductors.
 Install switches, fuses and earthing in compliance with local
regulations.
 The connection diagrams show the burner controls with
earthed neutral conductor.
 Make certain that the maximum permissible current rating of
the connection terminals is not exceeded.
 Make certain that strain relief of the connected cables is in
compliance with the relevant standards.
 Do not feed external mains voltage to the control outputs of
the unit. When testing the devices controlled by the burner
control (fuel valves, etc.), the LME71… must not be connected
to the units.
 The mechanical coupling between the actuators and the con-
trolling elements for fuel and air, or any other controlling ele-
ments, must be rigid.
 Check the connecting lines of the air pressure switch for short-
circuits.
Electrical connection of flame detectors
It is important to achieve practically disturbance- and loss-free sig-
nal transmission:
 Never run the detector cable together with other cables:
– line capacitance reduces the magnitude of the flame signal;
– use a separate cable.
 Observe the permissible detector cable lengths (see Technical
Data).
 The mains-powered ionization probe is not protected against
electric shock hazard.
 Locate the ignition electrode and the ionization probe such
that the ignition spark cannot arc over to the ionization probe
(risk of electrical overloads) and that it cannot adversely affect
the supervision of ionization.
Description of display and buttons
Tab. H
Button Function
Button A
– Display preset output
– In lockout position: power value to the time of
fault
Info and Enter Button
The lockout reset button (info button) is the key op-
erating element for resetting the burner control and
for activating/deactivating the diagnostics func-
tions.
- Button
– Display flame signal current 2 or phases dis-
play
– In lockout position: MMI phase to the time of
fault
+ Button
– Display flame signal current 1 or phases dis-
play
– In lockout position: MMI phase to the time of
fault
3 multicolour signal lamp
The multicolour signal lamp (red - yellow - green) is
the key indicating element for visual diagnostics.
+ and - Button: escape function
Press + and - button simultaneously!
– No adoption of value
– One menu level up
– Keep depressed for >1second for backup/re-
store function
nfo
+
-
A
Fig. 12
S8595
A
nfo
-
+
- +
and

Technical description of the burner
15 20093868
GB
Technical data
Tab. I
LME71... burner con-
trols
Mains voltage AC 120 V
Mains frequency 50 / 60 Hz
Power consumption <10 W, typical
External primary fuse Max. 6.3 A (slow)
Safety class I with parts according to II and III to DIN EN 60730-1
Terminal rating
“Inputs”
Under voltage UMains 120 V
• Safety shutdown from the operating position takes
place should mains voltage drop
• Restart is initiated when mains voltage exceeds
< AC 75 V
> AC 100 V
Input currents and input voltages
–UeMax
–UeMin
– IeMax
–IeMin
UN +10%
UN -15%
1.5 mA peak (peak value)
0.8 mA peak (peak value)
Voltage detection
–ON
–OFF
> AC 60 V
< AC 40 V
Terminal rating
“Outputs”
Total contact loading:
Rated voltage
Unit input current X3-04 (safety loop) from:
– fan motor contactor
– ignition transformer
– fuel valves
AC 120 V - 50/60 Hz
Max. 5 A
Individual contact loading:
Fan motor contactor X2-01 pin 3
– Rated voltage
– Rated current
– Power factor
AC 120 V 50/60 Hz
2 A (15A max. 0.5 s)
Cos0.4
Alarm output X2-03/3
– Rated voltage
– Rated current
– Power factor
AC 120 V 50/60 Hz
1 A
Cos> 0.6
Ignition transformer X4-02 pin 3
– Rated voltage
– Rated current
– Power factor
AC 120 V 50/60 Hz
2 A
Cos> 0.4
Auxiliary output
– Rated voltage
– Rated current
– Power factor
AC 120 V 50/60 Hz
1 A
Cos> 0.6
Output relay contact 2 pin 2 X2-09 pin 7
– Rated voltage
– Rated current
– Power factor
AC 120 V 50/60 Hz
1 A
Cos> 0.4
Fuel valves/pilot valve X7-01 pin 3
– Rated voltage
– Rated current
– Power factor
AC 120 V 50/60 Hz
1 A
Cos> 0.4
Safety valve X6-03 pin 3
– Rated voltage
– Rated current
– Power factor
AC 120 V 50/60 Hz
1.5 A
Cos> 0.6
Cable lengths Mains supply line Max. 100 m (100 pF/m)
Cross-sectional
areas
The cross-sectional areas of the mains power lines (L, N, and PE) and, if required, the safety loop (safety limit
thermostat, water shortage, etc.) must be sized for rated currents according to the selected external primary
fuse. The cross-sectional areas of the other cables must be sized in accordance with the internal unit fuse (max.
6.3 AT).
Environmental
conditions
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
DIN EN 60721-3-3
Class 3K3
Class 3M2
-40...+60 °C
<95% r.h.

20093868 16
GB
Technical description of the burner
Program sequence
M
Z
PV
V1+V2
AL
X2-02 Pin 3
Speed points
P2 (high-re)
P0 (ignition load)
P1 (low-re)
0 (no-load speed)
R
LR-OPEN
LR-CLOSE
Optional (LP)
if P235=1
Pmin
P LT
ION / QRA
Not active
X3-04 Pin 5
Relay
contact Function/inputs
Operating unit parameter number
LED permanent
LED ashing
tw t11 t10 t12 t3 t3n t4
Standby Startup
t1 TSA
432752622062522952
Relay
contact Function/outputs
SK
X3-04 Pin 1
X5-03 Pin 1
X5-03 Pin 3
X65 Pin 1
X5-03 Pin 2
X65 Pin 1
X3-02 Pin 1
X5-01 Pin 2
X2-02 Pin 4
X9-04 Pin 2
PWM
X6-03 Pin 3
X2-01 Pin 3
X4-02 Pin 3
X2-03 Pin 3
Phase number
0147274424048363030322422212 oP: xx (actual load in %) 74
224
t11 t8
POC
POC
Stand-by
speed
Prepurge speed
Ignition load speed
High-re speed
Modulation range
Low-re speed
Postpurge speed
240240240240240240
*1
*2
Operation Shutdown
Fig. 13
S9220

Technical description of the burner
17 20093868
GB
Key to lay-out (Fig. 13):
Tab. J
Times
Tab. K
AL Alarm device
AUX Auxiliary output
Dbr Wire link
Lockout reset button (info button)
EK2 Remote lockout reset button
FSV Flame signal amplifier
ION Ionization probe
K... Relay contact
LED 3-colour signal lamp
LP Air pressure switch
LR Load controller
LR-OPEN Load controller open position
LR-CLOSE Load controller closed position
MFan motor
NT Power supply unit
P LT Pressure switch valve proving
Pmax Max pressure switch
Pmin Min. pressure switch
POC Proof of closure
PV Pilot valve
QRA... UV flame detector
RControl thermostat or pressurestat
SA Actuator
SA-KL Actuator low-fire
SA-NL Actuator high-fire
SA-R Actuator feedback
SA-Z Actuator closed
SA-ZL Actuator ignition load
SL Safety loop
STB Safety limit thermostat
SV Safety valve
V1 Fuel valve
V2 Fuel valve
PV Pilot valve
WLimit thermostat or pressure switch
ZIgnition transformer
µC µC controller
Input/output signal 1 (ON)
Input/output signal 2 (OFF)
Input permissible signal 1 (ON) or 0 (OFF)
/re set
(EK1)
TSA Safety time
tw Waiting time
t1 Pre-purge time
t3 Pre-ignition time
t3n Post-ignition time (P257 +0.3 seconds)
Ignition time 6s pilot valve ON - fuel valve OFF
6÷12s pilot valve ON - fuel valve ON
>12s pilot valve OFF - fuel valve ON
t4 Interval: end of safety time load controller
release
t8 Post-purge time
t10 Specified time air pressure switch state mes-
sage (time out)
t11 Opening time of actuator (time out)
t12 Closing time of actuator (time out)

20093868 18
GB
Technical description of the burner
Key to phases (Fig. 13 on page 16):
Tab. L
3.10.1 Indication of diagnostics mode
Both lockout reset button and signal lamp are located in the control
panel.
There are 2 diagnostics choices:
1 Visual diagnostics: Indication of operating state or diagnostics
of cause of fault
2 Diagnostics: Via BCI to AZL2... display and operating unit
Visual diagnostics:
in normal operation, the different operating states are indicated in
the form of colour codes according to the colour code table given
below (Tab. M).
Indication of operating state
During start up, state indication takes place according to the
Tab. M:
Tab. M
Key (Tab. M)
Phase Function
LOC Lockout shut down phase
OFF Standby, waiting for heat request
oP Part 1: request load controller OPEN
Part 2: modulation of fan motor speed toward high-fire
Part 3: high-fire reached
Part 4: request load controller CLOSED
Part 5: modulation of fan motor speed toward low-fire
Part 6: low-fired reached
10 Settling time, fan motor standby speed
21 Safety valve ON, air pressure switch in no-load posi-
tion
Check if POC is closed, fan motor speed is reduced
to 0
22 Part 1: fan motor ON
Part 2: specified time air pressure switch
Message (time-out), stabilization of air pressure
switch
24 Settling time, fan motor pre-purge speed
30 Part 1: pre-purge time without flame simulation test
Part 2: pre-purge time with flame simulation test
(2.1 seconds)
36 Speed settling time, fan motor ignition load speed
38 Pre-ignition time
40 Post-ignition time, parameter 257 + 0.3 seconds
42 Flame detection
44 Interval: end of ignition safety time and release of load
controller
72 Speed stabilization time, fan motor post-purge speed
74 Part 1: operation is ended, check if post-purging is pro-
grammed
Part 2: post-purge time
90 Min. pressure switch open --> safety shut down
*1 Valve proving, if P241 = 1 after main ON, lockout or
P234 (post-purge time) = 0 second
*2 Valve proving, if P241 = 1 and P234 (post-purge time)
>0 second
The lockout reset button (info button) is the key op-
erating element for resetting the burner control and
for activating/deactivating the diagnostics func-
tions.
The multicolour signal lamp is the key indicating el-
ement for visual diagnostics.
Colour code table for multicolour signal lamp
State Colour code Colour
Waiting time,
other waiting states OFF
Ignition phase,
ignition controlled
Blinking
yellow
Operation, flame o.k. Green
Operation,
flame not o.k.
Blinking
green
Extraneous light on
burner start up Green - Red
Under voltage Yellow - Red
Fault, alarm Red
Error code output (see
Tab. V on page 64) Blinking red
Interface diagnostics Red flicker
light
Heating request Yellow
New program card Yellow
Yellow - Red
nfo
Red
Yellow
Green
LED
...............................
...............................
...............................
...............................
Red
Yellow
Green
........
OFF
Steady on