Worcester ZWBR 7-30 R 30 HE plus User Manual

6 720 611 400 GB (03.11)
Contents
2
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 9
2 Installation regulations 10
3 Installation 11
3.1 Important remarks 11
3.2 Domestic hot water 11
3.3 Sealed systems 11
3.4 Siting the appliance 12
3.5 Wall mounting frame assembly 13
3.6 Pre-piping the system 13
3.7 Fitting the appliance 14
3.8 Checking the connections 15
3.9 Flue Systems 15
3.9.1 Siting the Flue Terminal 16
3.9.2 Installation of the flue 17
3.9.3 Flue duct preparation and assembly 19
4 Electrical connections 20
4.1 Connecting the appliance 20
4.2 Connecting TR2 Room thermostat 21
4.3 Mains Voltage external controls connections 21
5 Commissioning 22
5.1 Commissioning 22
5.2 Switching the appliance on/off 23
5.3 Switching on the central heating 23
5.4 System controls 23
5.5 Setting the domestic hot water temperature and flow
rate 24
5.5.1 Domestic hot water temperature 24
5.5.2 Hot water flow rate 24
5.6 Summer mode (hot water only) 24
5.7 Frost protection 24
5.8 Pump anti-seize function 24
5.9 Fault Condition 25
6Text Display 26
6.1 General Description 26
6.2 Programming 26
6.2.1 Deleting a setting 27
6.2.2 Resetting all parameters to their original settings 27
6.3 Menu structure 27
6.4 Setting the time/day 28
6.4.1 Setting the time and day 28
6.4.2 Holidays 28
6.5 Heating 28
6.5.1 Heating programme 28
6.5.2 Setting Economy temperature (TR2 connected) 28
6.5.3 Manual operating mode (TR2 not connected) 29
6.6 Hot water 29
6.6.1 Hot water programme 29
6.6.2 Hot water immediately 29
6.7 i Info 29
6.8 Settings 30
6.8.1 Heating (if TR 2 is connected) 30
6.8.2 Hot Water (Storage Tank, system models only) 30
6.8.3 Service 30
6.9 Individual timer programmes 30
7 Individual settings 31
7.1 Mechanical settings 31
7.1.1 Checking the size of the expansion vessel 31
7.1.2 Setting the central heating flow temperature 31
7.2 Settings on the Bosch Heatronic 31
7.2.1 General description 31
7.2.2 Setting the anti-cycle time
(Service Function 2.4) 32
7.2.3 Setting the maximum CH flow temperature (Service
Function 2.5) 32
7.2.4 Setting the heating output
(Service Function 5.0) 32
7.2.5 Constant hot water cycle time
(Service Function 6.8) 32
7.2.6 Variable pump settings
(Service Function 7.0) 32
7.3 Setting the gas/air ratio 32
8 Converting the appliance to different
gas types 33
8.1 Setting the gas/air ratio 33
8.2 Testing combustion air/flue gas at set heat output 35
8.2.1 Testing the O2 or CO2 level in the combustion air 35
8.2.2 Testing CO and CO2 35
9 Maintenance 36
9.1 Pre-Service Check List 37
9.2 Description of servicing operations 38
9.3 Replacement of Parts 41
9.3.1 PCB control board and transformer 41
9.3.2 Fan Assembly 42
9.3.3 Pump 42
9.3.4 3-way diverter valve 43
9.3.5 3-way diverter valve motor 43
9.3.6 Sensors 43
9.3.7 Gas Valve 44
9.3.8 Domestic Hot Water Heat Exchanger 44
9.3.9 Electrode assembly 44
9.3.10 Pressure gauge 44
9.3.11 Expansion vessel 44
9.3.12 Pressure Relief Valve 44
9.3.13 Burner 44
9.3.14 Flow switch 45
9.3.15 Primary Heat Exchanger 45
10 Appendix 46
10.1 Fault Codes 46
10.2 Short parts list 47
10.3 Heating/hot water output settings R 30 HE N.G. 48
10.4 Heating/hot water output settings R 30 HE L.P.G 48
10.5 Heating/hot water output settings R 35 HE N.G. 48
10.6 Heating/hot water output settings R 35 HE L.P.G 48
10.7 Operational Flow diagrams 49
10.7.1 Domestic hot water function 49
10.7.2 Central heating function 50
10.7.2Central heating
function 50

Worcester ZWBR 7-30 R 30 HE plus Specifications

General

Brand	Worcester
Model	ZWBR 7-30 R 30 HE plus
Category	Boiler
Language	English