Worcester GREENSTAR HE combi Series User Manual

6 720 610 576 GB (03.02)
2
Contents
Contents
Safety precautions 3
Symbols 3
1 Details of the appliance 4
1.1 EC Declaration of Conformity 4
1.2 Standard package 4
1.3 Description of appliance 4
1.4 Accessories 5
1.5 Casing dimensions 5
1.6 Layout of appliance 6
1.7 Function 7
1.8 Electrical wiring diagram 8
1.9 Technical data ZWB 7/11-25 9
1.10 Technical data ZWB 7/11-30 10
2 Installation regulations 11
3 Installation 12
3.1 Important remarks 12
3.2 Domestic hot water 12
3.3 Sealed systems 12
3.4 Siting the appliance 13
3.5 Wall mounting frame assembly 14
3.6 Pre-piping the system 14
3.7 Fitting the appliance 15
3.8 Checking the connections 16
3.9 Flue Systems 16
3.9.1 Siting the Flue Terminal 17
3.9.2 Installation of the flue 18
3.9.3 Flue duct preparation and assembly 20
4 Electrical connections 21
4.1 Connecting the appliance 21
4.2 Mains Voltage external controls connections 22
5 Commissioning 23
5.1 Commissioning 23
5.2 Switching the appliance on/off 24
5.3 Switching on the central heating 24
5.4 System controls 24
5.5 Setting the domestic hot water
temperature and flow rate 25
5.5.1 Domestic hot water temperature 25
5.5.2 Hot water flow rate 25
5.6 Summer mode (hot water only) 25
5.7 Frost protection 25
5.8 Pump anti-seize function 25
5.9 Fault Condition 26
6 Individual settings 27
6.1 Mechanical settings 27
6.1.1 Checking the size of the expansion vessel 27
6.1.2 Setting the central heating flow temperature 27
6.1.3 Changing the heating pump characteristic 27
6.2 Settings on the Bosch Heatronic 28
6.2.1 Operating the Bosch Heatronic 28
6.2.2 Selecting the pump control mode for central
heating mode (Service Function 2.2) 28
6.2.3 Setting the anti-cycle time
(Service Function 2.4) 28
6.2.4 Setting the maxim CH flow temperature
(Service Function 2.5) 29
6.2.5 Setting the switching difference
(Service Function 2.6) 29
6.2.6 Setting the heating output
(Service Function 5.0) 29
6.2.7 Constant hot water cycle time
(Service Function 6.8) 29
6.3 Setting the gas/air ratio 29
7 Converting the appliance to different
gas types 30
7.1 Setting the gas/air ratio 30
7.2 Testing combustion air/flue gas at set
heat output 31
7.2.1 Testing the O
2
or CO
2
level in the
combustion air 31
7.2.2 Testing CO and CO
2
32
8 Maintenance 32
8.1 Pre-Service Check List 33
8.2 Description of servicing operations 34
8.3 Replacement of Parts 37
8.3.1 PCB control board and transformer 37
8.3.2 Fan Assembly 38
8.3.3 Pump 39
8.3.4 3-way diverter valve 39
8.3.5 3-way diverter valve motor 39
8.3.6 Sensors 40
8.3.7 Gas Valve 40
8.3.8 Domestic Hot Water Heat Exchanger 41
8.3.9 Electrode assembly 41
8.3.10Pressure gauge 41
8.3.11Expansion vessel 41
8.3.12Pressure Relief Valve 41
8.3.13Burner 41
8.3.14Flow switch 41
8.3.15Primary Heat Exchanger 42
9 Appendix 43
9.1 Fault Codes 43
9.2 Short parts list 44
9.3 Heating/hot water output settings
ZWB 7-25 N.G. 45
9.4 Heating/hot water output settings
ZWB 11-25 L.P.G. 45
9.5 Heating/hot water output settings
ZWB 7-30 N.G. 45
9.6 Heating/hot water output settings
ZWB 11-30 L.P.G. 45
9.7 Operational Flow diagrams 46
9.7.1 Domestic hot water function 46
9.7.2 Central heating function 47

Worcester GREENSTAR HE combi Series Specifications

General

Brand	Worcester
Model	GREENSTAR HE combi Series
Category	Boiler
Language	English