Worcester Greenstar 2000 Installation And Maintenance Instructions Manual page 3

9 Inspection and maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . .59
9.1 Inspection and maintenance considerations . . . . . . . .59
9.2 Service functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
9.3 Component access. . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
9.4 Fan pressure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
9.4.1 Checking heat exchanger assembly . . . . . . . . . . . . . . .60
9.5 Check working gas inlet pressure . . . . . . . . . . . . . . . . .60
9.6 Flue gas analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
9.7 Checking the flue integrity . . . . . . . . . . . . . . . . . . . . . . .61
9.8 Cleaning the siphon and heat exchanger . . . . . . . . . . .61
9.8.1 Cleaning the heat exchanger . . . . . . . . . . . . . . . . . . . . .61
9.8.2 Cleaning the siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
9.9 Setting the air/gas ratio . . . . . . . . . . . . . . . . . . . . . . . . .66
10 Replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
10.1 Component access. . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
10.2 Draining the appliance . . . . . . . . . . . . . . . . . . . . . . . . . .67
10.3 Checking the strainer in the cold water pipe. . . . . . . . .68
10.4 Checking the plate heat exchanger . . . . . . . . . . . . . . . .68
10.5 Checking the expansion vessel . . . . . . . . . . . . . . . . . . .68
10.6 Adjusting the operating pressure of the heating
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
10.7 Removing the gas valve . . . . . . . . . . . . . . . . . . . . . . . . .69
10.8 Removing the pump . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
10.9 Removing the automatic air vent valve . . . . . . . . . . . . .69
10.10 Removing the motor of the diverter valve . . . . . . . . . . .70
10.11 Removing the heat exchanger . . . . . . . . . . . . . . . . . . . .70
10.12 Replacing the control unit . . . . . . . . . . . . . . . . . . . . . . .71
10.13 Replacing the 230V interface box . . . . . . . . . . . . . . . . .71
10.14 Reattaching the casing on the side . . . . . . . . . . . . . . . .72
11 Fault finding and diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
11.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
11.2 Fault code table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
11.3 Pump operation and diagnosis . . . . . . . . . . . . . . . . . . .84
11.4 Faults that are not displayed . . . . . . . . . . . . . . . . . . . . .85
12 Environmental protection and disposal . . . . . . . . . . . . . . . . .86
13 Technical Specifications/Logs . . . . . . . . . . . . . . . . . . . . . . . . .87
13.1 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
13.2 Component resistance characteristics . . . . . . . . . . . . .90
13.3 Heating curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
13.4 Internal wiring of the appliance . . . . . . . . . . . . . . . . . . .91
13.4.1 Electrical wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
13.5 Setting values for output . . . . . . . . . . . . . . . . . . . . . . . .92
13.5.1 Gas setting values (Natural Gas) . . . . . . . . . . . . . . . . . .92
13.6 Gas Boiler System Commissioning Checklist and
Warranty Validation Record . . . . . . . . . . . . . . . . . . . . . .93
13.7 Inspection and maintenance checklist . . . . . . . . . . . . .94
13.8 Service and Interim Boiler Work Record . . . . . . . . . . . .95
14 Data Protection Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Greenstar 2000 - 6 721 820 552 (2021/02)
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