Table Of Contents; 7.2.2 Testing Co And Co - Bosch WORCESTER GREENSTAR HE ZB 7-27 Manual

Contents
Contents
Safety precautions
Symbols
1 Details of the appliance
1.1 EC Declaration of Conformity
1.2 Standard package
1.3 Description of appliance
1.4 Accessories
1.5 Casing dimensions
1.6 Layout of appliance
1.7 Function
1.8 Electrical wiring diagram
1.9 Technical data
2 Installation regulations
3 Installation
3.1 Important remarks
3.2 Sealed systems
3.3 Siting the appliance
3.4 Wall mounting frame assembly
3.5 Pre-piping the system
3.6 Fitting the appliance
3.7 Checking the connections
3.8 Flue Systems
3.8.1 Siting the Flue Terminal
3.8.2 Installation of the flue
3.8.3 Flue duct preparation and assembly
4 Electrical connections
4.1 Connecting the appliance
4.2 Mains Voltage external controls connections 21
4.3 Wiring to your system
4.3.1 Pre-wired Remote Y Plan or S Plan
5 Commissioning
5.1 Commissioning
5.2 Switching the appliance on/off
5.3 Switching on the central heating
5.4 System controls
5.5 Frost protection
5.6 Pump anti-seize function
5.7 Fault Condition
2
3 6 Individual settings
6.1 Mechanical settings
6.1.1 Checking the size of the expansion vessel
3
6.1.2 Setting the central heating flow temperature 26
6.1.3 Changing the heating pump characteristic
4
6.2 Settings on the Bosch Heatronic
4
6.2.1 Operating the Bosch Heatronic
4
6.2.2 Selecting the pump control mode for
4
central heating mode (Service Function 2.2) 27
5
6.2.3 Setting the anti-cycle time
5
(Service Function 2.4)
6
6.2.4 Setting the maxim CH flow temperature
7
(Service Function 2.5)
8
6.2.5 Setting the switching difference
9
(Service Function 2.6)
6.2.6 Setting the heating output
11
(Service Function 5.0)
6.3 Setting the gas/air ratio
11
11
7 Converting the appliance to
11
different gas types
12
7.1 Setting the gas/air ratio
13
7.2 Testing combustion air/flue gas
13
at set heat output
14
7.2.1 Testing the O
15
the combustion air
15
7.2.2 Testing CO and CO
16
17
8 Maintenance
19
8.1 Pre-Service Check List
8.2 Description of servicing operations
20
8.3 Replacement of Parts
20
8.3.1 PCB control board and transformer
8.3.2 Fan Assembly
22
8.3.3 Pump
22
8.3.4 Sensors
8.3.5 Gas Valve
23
8.3.6 Electrode assembly
23
8.3.7 Pressure gauge
24
8.3.8 Expansion vessel
24
8.3.9 Pressure Relief Valve
24
8.3.10Burner
24
8.3.11Primary Heat Exchanger
25
25
9 Appendix
9.1 Fault Codes
9.2 Short parts list
9.3 Heating/hot water output settings (N.G.)
9.4 Heating/hot water output settings (L.P.G)
9.5 Operational Flow diagrams
9.5.1 Central heating function
or CO level in
2 2
2
6 720 610 596 GB (01.07)
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