Riello COH 280 Quick start guide

2902785 (16) - 08/2022
Installation, use and maintenance instructions
Kerosene and gas oil burner
One stage operation
CODE BOULTER CODE MODEL TYPE
3748962 8-716-111-556 COH 280 490 T51

Original instructions

1 2902785
GB
Contents
1 Declaration.................................................................................................................................................................................. 3
2 Information and general warnings............................................................................................................................................ 4
2.1 Information about the instruction manual........................................................................................................................ 4
2.1.1 Introduction ..................................................................................................................................................................... 4
2.1.2 General dangers ............................................................................................................................................................. 4
2.1.3 Other symbols................................................................................................................................................................. 4
2.1.4 Delivery of the system and the instruction manual ......................................................................................................... 5
2.2 Guarantee and responsibility .......................................................................................................................................... 5
2.3 Guidance for the use of bio fuel blends up to 10% where gas oil use is permitted by the appliance Manufacturer ....... 6
2.3.1 Information and general instructions............................................................................................................................... 6
2.3.2 Product Disclaimer Statement ........................................................................................................................................ 6
3 Safety and prevention................................................................................................................................................................ 7
3.1 Introduction ..................................................................................................................................................................... 7
3.2 Safety warnings .............................................................................................................................................................. 7
3.3 Basic safety rules............................................................................................................................................................ 7
3.4 Personnel training........................................................................................................................................................... 7
4 Technical description of the burner ......................................................................................................................................... 8
4.1 Technical data ................................................................................................................................................................ 8
4.2 Burner description........................................................................................................................................................... 8
4.3 Burner equipment ........................................................................................................................................................... 8
4.4 Burner dimensions.......................................................................................................................................................... 9
4.5 Firing rate........................................................................................................................................................................ 9
5 Installation ................................................................................................................................................................................ 10
5.1 Notes on safety for the installation................................................................................................................................ 10
5.2 Handling........................................................................................................................................................................ 10
5.3 Preliminary checks........................................................................................................................................................ 10
5.4 Installer/Servicer notes for the use of Gas oil with Bio blends up to 10%..................................................................... 11
5.5 Working position ........................................................................................................................................................... 11
5.6 Boiler fixing ................................................................................................................................................................... 12
5.7 Mounting the burner...................................................................................................................................................... 13
6 Hydraulic systems.................................................................................................................................................................... 14
6.1 Fuel supply ................................................................................................................................................................... 14
6.1.1 Pump ............................................................................................................................................................................ 14
6.2 One pipe system........................................................................................................................................................... 15
6.2.1 Priming pump................................................................................................................................................................ 15
6.3 Two pipe system........................................................................................................................................................... 16
6.3.1 Priming pump................................................................................................................................................................ 16
7 Electrical system ...................................................................................................................................................................... 17
7.1 Notes on safety for the electrical wiring ........................................................................................................................ 17
7.2 Electrical wiring............................................................................................................................................................. 18
7.2.1 Control box ................................................................................................................................................................... 18
8 Start-up, calibration and operation of the burner ................................................................................................................. 19
8.1 Notes on safety for the first start-up.............................................................................................................................. 19
8.2 Combustion adjustment ................................................................................................................................................ 19
8.3 Nozzles installation ....................................................................................................................................................... 19
8.3.1 Nozzles recommended ................................................................................................................................................. 20
8.4 Pump pressure ............................................................................................................................................................. 20
8.5 Air damper adjustment.................................................................................................................................................. 20
8.6 Combustion head adjustment ....................................................................................................................................... 20
8.7 Diffuser disc unit and electrodes setting ....................................................................................................................... 20

2902785 2
GB
Contents
8.8 Burner start-up cycle .....................................................................................................................................................21
9 Maintenance ..............................................................................................................................................................................22
9.1 Notes on safety for the maintenance.............................................................................................................................22
9.2 Maintenance programme ..............................................................................................................................................22
9.2.1 Maintenance frequency .................................................................................................................................................22
9.2.2 Checking and cleaning ..................................................................................................................................................22
9.2.3 Safety components........................................................................................................................................................23
9.3 Maintenance position ....................................................................................................................................................23
10 Faults - Probable causes - Solutions ......................................................................................................................................24

3 2902785
GB
Declaration
Declaration of Conformity in accordance with ISO / IEC 17050-1
These products are in compliance with the following Technical Standards:
• EN 12100
•EN267
According to the European Directives:
MD 2006/42/EC Machine Directive
LVD 2014/35/EU Low Voltage Directive
EMC 2014/30/EU Electromagnetic Compatibility
The quality is guaranteed by a quality and management system certified in accordance with ISO 9001:2015.
1 Declaration