6 720 611 449 GB (03.11)
2
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 Sealed systems 11
3.3 Siting the appliance 13
3.4 Wall mounting frame assembly 14
3.5 Pre-piping the system 14
3.6 Fitting the appliance 15
3.7 Checking the connections 16
3.8 Flue Systems 16
3.8.1 Siting the Flue Terminal 17
3.8.2 Installation of the flue 18
3.8.3 Flue duct preparation and assembly 20
4 Electrical connections 21
4.1 Connecting the appliance 21
4.2 Connecting TR2 Room thermostat 22
4.3 Mains Voltage external controls connections 22
4.4 Connecting a Hot Water Cylinder 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 Appliances with Storage Tank: Setting hot water
temperature 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 25
5.10 Appliance Data Monitoring 26
6TextDisplay 27
6.1 General Description 27
6.2 Programming 27
6.2.1 Deleting a setting 28
6.2.2 Resetting all parameters to original settings 28
6.3 Menu structure 28
6.4 Setting the time/day 29
6.4.1 Setting the time and day 29
6.4.2 Holidays 29
6.5 Heating 29
6.5.1 Heating programme 29
6.5.2 Setting the Economy temperature (TR2
connected) 29
6.5.3 Manual operating mode (TR2 not connected) 30
6.6 Hot water 30
6.6.1 Hot water programme 30
6.6.2 Hot water immediately 30
6.7 i Info 30
6.8 Settings 31
6.8.1 Heating (if TR 2 is connected) 31
6.8.2 Hot Water Storage Tank 31
6.8.3 Service 31
6.9 Individual timer programmes 31
7 Individual settings 32
7.1 Mechanical settings 32
7.1.1 Checking the size of the expansion vessel 32
7.1.2 Setting the central heating flow temperature 32
7.2 Settings on the Bosch Heatronic 32
7.2.1 General description 32
7.2.2 Setting the anti-cycle time
(Service Function 2.4) 33
7.2.3 Setting the maximum CH flow temperature
(Service Function 2.5) 33
7.2.4 Setting the heating output
(Service Function 5.0) 33
7.2.5 Variable pump settings
(Service Function 7.0) 33
7.3 Setting the gas/air ratio 33
8 Converting the appliance to different
gas types 34
8.1 Setting the gas/air ratio 34
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 42
9.3.5 3-way diverter valve motor 43
9.3.6 Sensors 43
9.3.7 Gas Valve 43
9.3.8 Electrode assembly 44
9.3.9 Pressure gauge 44
9.3.10Expansion vessel 44
9.3.11Pressure Relief Valve 44
9.3.12Burner 44
9.3.13Primary Heat Exchanger 44
10 Appendix 45
10.1 Fault Codes 45
10.2 Short parts list 46
10.3 Heating/hot water output settings N.G. 46
10.4 Heating/hot water output settings L.P.G 46
10.5 Operational Flow diagrams 47
10.5.1Central heating function 47
