Overall View - Ariston Genus 27 Plus Installation Instructions Manual

1.2

Overall View

Legend:
1. Air Pressure Switch
2. Fan
3. Main Heat Exchanger
4. Combustion Chamber
5. Ignition Electrodes and
Detection Electrodes
6. Burner
7. Automatic air release valve
8. Gas Valve
9. Spark Generator
10. Circulation Pump
11. Motorised Valve with by-pass
12. Main Circuit Flow Switch
13. Safety Valve (3 bar)
14. Low pressure switch
15. Expansion relief valve (6 bar)
16. C.H. expansion Vessel
17. D.H.W. expansion Vessel
18. Drain point
19. C.H.W. Probe
20. Overheat Thermostat
21. D.H.W. Storage with insulation shell
4
4 - Visual check of the combustion: clean burners if necessary.
5 - With reference to point 3, dismantle and clean the combustion chamber if nec-
essary.
6 - With reference to point 4, dismantle and clean the injectors if necessary.
7 - Visual check of the primary heat exchanger:
- check for overheating of the exchangers fins;
- clean the exhaust side of the exchanger and fan if necessary.
8 - Regulate the gas pressure, ignition pressure, partial flame, maximum flame.
9 - Check proper operation of the heating safety system:
- maximum safety temperature;
- maximum safety pressure.
10 - Check the proper operation of the gas safety system:
- gas or flame safety device;
- gas valve safety device.
11 - Check that the electrical connections have been made in compliance wit h the
instructions shown in the Installation Instructions.
12 - Check the efficiency of the hot water supply (flow and temperature).
13 - Check pressure in the Domestic Expansion Vessel and top up as necessary.
14 - Check manually by turning the test knob the Temperature & Pressure Relief Valve.
15 - Check manually by turning the test knob the Expansion Relief Valve.
16 - Check discharge pipes from both the central heating and domestic hot water
for obstructions.
17 - Check general operation of the appliance.
18 - Check the exhaust system for the combustion products.
Fig. 1.1
IN003Ab