Technical data

6 720 611 443 GB (03.11)
2
Contents
Contents
Safety precautions 3
Symbols 3
1Details 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
1.6Layout of appliance 6
1.7 Function (with optional extra motorised valve) 7
1.8 Electrical wiring diagram 8
1.9Technical data 9
2Installation regulations 10
3Installation 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 17
3.8 Flue Systems 17
3.8.1 Siting the Flue Terminal 18
3.8.2 Installation of the flue 19
3.8.3 Flue duct preparation and assembly 20
4Electrical connections 22
4.1Connecting the appliance 22
4.2 Mains Voltage external controls connections 23
4.3 Wiring to your system 23
4.3.1 Pre-wired Remote S Plan 23
5Commissioning 24
5.1 Commissioning 24
5.2Switching the appliance on/off 25
5.3Switching on the central heating 25
5.4 System controls 25
5.5 Appliances with optional plug-in diverter valve:
Setting hot water temperature 26
5.6 Frost protection 26
5.7Pump anti-seize function 26
5.8 Fault Condition 26
6Individual settings 27
6.1Mechanical 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 maximum CH flow temperature
(Service Function 2.5) 28
6.2.5 Setting the switching difference
(Service Function 2.6) 29
6.2.6 Setting the heating out 29
6.3 Setting the gas/air ratio 29
7Converting 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 out-
put 32
7.2.1 Testing the O2 or CO2 level in the combustion
air 32
7.2.2 Testing CO and CO2 32
8Maintenance 33
8.1 Pre-Service Check List 34
8.2 Description of servicing operations 35
8.3Replacement of Parts 38
8.3.1 PCB control board and transformer 38
8.3.2 Fan Assembly 39
8.3.3 Pump 39
8.3.4 Optional 3-way diverter valve 39
8.3.5 3-way diverter valve motor 40
8.3.6 Sensors 40
8.3.7 Gas Valve 40
8.3.8 Electrode assembly 40
8.3.9 Pressure gauge 41
8.3.10Expansion vessel 41
8.3.11Pressure Relief Valve 41
8.3.12Burner 41
8.3.13Primary Heat Exchanger 41
9Appendix 42
9.1 Fault Codes 42
9.2Short parts list 43
9.3 Heating/hot water output settings (N.G) 43
9.4 Heating/hot water output settings (L.P.G) 43
9.5 Operational Flow diagrams 44
9.5.1 Central heating function 44