Uno - Installation Manual

7 - Visual check of the

7 - Visual check of the primary heat exchanger: - check for overheating in the blade assembly; - clean the exhaust fan if needed. 8 - Adjustment of the gas pressures: ignition pressure, partial load and full load. 9 - Check the heating safety systems: - safety device for maximum temperature; - safety device for maximum pressure. 10- Check the gas safety systems: - safety device for lack of gas or flame ionisation (detection electrode); - safety device for gas cock. 11- Check the electrical connection (make sure it complies with the instructions in this manual). 12- Check domestic hot water production efficiency (flow rate and temperature) 13- General check of the combustion by-products of the discharge/ventilation system. 14- Check the general performance of the unit. 1.2 OVERALL VIEW 1 2 3 4 5 6 7 8 9 10 11 12 13 25 24 23 22 21 20 LEGEND: 1. Flue connector 2. Air intake for twin pipe flue systems 3. Fan 4. Combustion chamber hood 5. Main heat exchanger 6. Main circuit temperature probe (flow sensor) 7. Combustion chamber 8. Combustion chamber insulation panel 9. Burner 10. Detection electrode 11. Ignition electrodes 12. Motorised diverter valve 13. Safety valve (3 bar) 14. Secondary heat exchanger 15. Gas valve 17. Domestic cold water inlet filter 18. Spark generator 19. Domestic hot water flow switch 20. Boiler drain valve 21. Circulation pump with automatic air release valve 22. Main circuit temperature probe (return sensor) 23. Expansion vessel 24. Air pressure switch 25. Combustion analysis intakes FIG. 1.0 14 15 17 18 19 IN013A 4

2. INSTALLATION The technical information and instructions provided herein below are intended for the installer so that the unit may be installed correctly and safely. 2.1 REFERENCE STANDARDS The installation and initial start up of the boiler must be by a CORGI Approved Installer in compliance with the installation standards currently in effect, as well as with any and all local health and safety standards i.e.. CORGI . This appliance must be installed by a competent installer in accordance with current Gas Safety (installation & use) Regulations. The installation of this appliance must be in accordance with the relevant requirements of the current Gas Safety (installation & use) Regulations, the Local Building Regulations, the current I.E.E. Wiring Regulations, the byelaws of the local water authority, and in Scotland, in accordance with the Building Standards (Scotland) Regulation and Health and Safety document No. 635 “Electricity at work regs. 1989”. Installation should also comply with the following British Standard Codes of Practice: Low pressure pipes BS 6891 1988 Boilers of rated input not exceeding 60 kW BS 6798 1987 Forced circulation hot water system BS 5449 1990 Installation of gas hot water supplies for domestic purposes ( 2 nd family gases) BS 5546 1990 Flues BS 5440-1 1990 Air supply BS 5440-2 1989 2.2 SITING THE APPLIANCE The appliance may be installed in any room or indoor area, although particular attention is drawn to the requirements of the current I.E.E. Wiring Regulations, and in Scotland, the electrical provisions of the Building Regulations applicable in Scotland, with respect to the installation of the combined appliance in a room containing a bath or shower. Where a room-sealed appliance is installed in a room containing a bath or shower the boiler and any electrical switch or appliance control, utilising mains electricity should be situated so that it cannot be touched by a person using the bath or shower. The location must permit adequate space for servicing and air circulation around the appliance as indicated in paragraph 2.4. The location must permit the provision of an adequate flue and termination. For unusual locations special procedures may be necessary. BS 6798-1987 gives detailed guidance on this aspect. A compartment used to enclose the appliance must be designed specifically for this purpose. No specific ventilation requirements are needed for the installation within a cupboard. This appliance is not suitable for outdoor installation. The type C appliances (in which the combustion circuit, air vent intake and combustion chamber are air-tight with respect to the room in which the appliance is installed) can be installed in any type of room. There are no limitations with respect to ventilation and the volume of the room itself. The boiler must be installed on a solid, permanent wall to prevent access to the electrical parts (when live) through the aperture on the back frame. 5