3
CONTENTS
1 GENERAL INFORMATION ............................4
1.1 Key to symbols ................................4
1.2 General Safety Information ......................4
1.3 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.1 General warnings..............................5
2 PRODUCT DESCRIPTION.............................7
2.1 Description of the appliance .....................7
2.2 Safety devices ................................7
2.3 Proper Use ...................................7
2.4 Environmental Responsibility / Disposal .............7
2.5 Emergency Shutdown ..........................7
2.6 Prolonged Shutdown ...........................8
2.7 Identiî™cation.................................9
2.8 System layout................................ 10
2.9 Dimension ...................................11
2.10 Technical speciî™cations ........................ 12
2.11 Efî™ciency Curves ............................. 13
2.12 Pumps ..................................... 14
2.13 Water circuit................................. 14
2.14 Positioning of the temperature sensors ............ 14
2.15 Service panel .................................17
2.16 Regulations and Guidelines ..................... 18
2.16.1 Compliance with standards and regulations ........ 18
2.16.2 Operating limits of the boiler .................... 18
2.16.3 Additional regulations for installations in the
Commonwealth of Massachusetts ................ 18
3 INSTALLATION .....................................19
3.1 Introduction................................. 19
3.2 Receiving the Unit ............................ 19
3.3 Unpacking .................................. 19
3.4 Site Preparation .............................. 19
3.5 Installation premises .......................... 19
3.5.1 Installation clearances ......................... 19
3.5.2 Setting the Unit ..............................20
3.6 Installation in older systems and systems requiring
modiî™cations ............................... 21
3.7 Boiler Location ............................... 21
3.8 Water Quality Guidelines ....................... 21
3.9 ASME pressure relief valve....................... 22
3.10 Condensate Drain and Piping....................23
3.11 Water connection............................. 23
3.12 Gas connections .............................23
3.13 Combustion gas exhaust .......................24
3.14 Gas Type Conversion...........................25
3.15 Adjusting and Setting O
2 Limits...................26
3.16 Wiring diagram .............................. 27
3.17 Electronic control .............................29
3.17.1 Menu structure ..............................30
4 COMMISSIONING ...................................33
4.1 Introduction.................................33
4.2 Filling the Condensate System ...................33
4.3 Filling the Boiler Heating System .................33
4.4 Warnings Concerning the Gas Supply ..............33
4.4.1 Conî™rming the Unit’s Gas Type ..................33
4.4.2 Gas Type Conversion...........................33
4.5 Boiler Startup Procedure .......................33
4.5.1 Minimum Water Flow (Heat Exchanger Protection) ....36
4.5.2 Heating System Pressure Test ....................36
4.6 Multiple Boiler Cascade Installation and Start-Up..... 37
5 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
5.1 Introduction.................................38
5.2 Control Panel Description . . . . . . . . . . . . . . . . . . . . . . . 38
5.3 Touchscreen Control Panel Menu .................38
5.3.1 Riello Screen ................................38
5.3.2 Module Screen ...............................38
5.3.3 Performance Screen...........................39
5.3.4 Service Screen ...............................39
5.3.5 Test Screen ..................................39
5.3.6 Cascade Screen ..............................40
5.3.7 Module Screen ...............................40
5.3.8 Performance Screen...........................40
5.3.9 Error Screen ................................. 41
5.3.10 Service Screen ............................... 41
5.3.11 Module Test Screen............................ 41
5.4 Display board replacement ..................... 41
5.5 Troubleshooting ..............................43
6 RECYCLING AND DISPOSAL ........................45
APPENDIX A - CONNECTION DIAGRAM .......................46
APPENDIX B - MAINTENANCE ................................48
APPENDIX C - HEAD AVAILABLE FOR THE SYSTEM ........... 49
APPENDIX D - DE-RATING FOR ALTITUDE INSTALLATION ......50
APPENDIX E - TROUBLESHOOTING TABLE ................... 51
APPENDIX F - TYPICAL WATER SYSTEM SCHEMATICS ........ 57
APPENDIX G - VENTING SIZE DATA ........................... 61
APPENDIX H - EXHAUST TERMINALS AND AIR INLET CLEARANCES
62
APPENDIX I - SENSOR RESISTANCE .......................... 70
APPENDIX J - LIST OF PARAMETERS (WITH RANGES AND DEFAULT
VALUES) .................................................71
APPENDIX K - FLOWCHARTS................................. 78