Bosch Worchester GREENSTAR ZWB 7-27 HE combi Manuals

Manuals and User Guides for Bosch Worchester GREENSTAR ZWB 7-27 HE combi. We have 1 Bosch Worchester GREENSTAR ZWB 7-27 HE combi manual available for free PDF download: Installation And Servicing Instructions

Bosch Worchester GREENSTAR ZWB 7-27 HE combi Installation And Servicing Instructions (48 pages)

Wall mounted condensing boiler for central heating and mains fed domestic hot water

Brand: Bosch | Category: Boiler | Size: 2.27 MB

Table of Contents
2
Safety Precautions

3
Symbols

3
1 Details of the Appliance

4
- EC Declaration of Conformity
  4
- Standard Package
  4
- Description of Appliance
  4
- Accessories
  5
- Casing Dimensions
  5
- Layout of Appliance
  6
- Function
  7
- Electrical Wiring Diagram
  8
- Technical Data
  9
2 Installation Regulations

11
3 Installation

11
- Important Remarks
  11
- Domestic Hot Water
  12
- Sealed Systems
  12
- Siting the Appliance
  13
- Wall Mounting Frame Assembly
  14
- Pre-Piping the System
  14
- Fitting the Appliance
  15
- Checking the Connections
  16
- Flue Systems
  16
- Siting the Flue Terminal
  17
- Installation of the Flue
  18
- Flue Duct Preparation and Assembly
  20
4 Electrical Connections

21
- Connecting the Appliance
  21
- Mains Voltage External Controls Connections
  22
5 Commissioning

23
- Switching the Appliance On/Off
  24
- Switching on the Central Heating
  24
- System Controls
  24
- Setting the Domestic Hot Water
  24
- Temperature and Flow Rate
  24
- Domestic Hot Water Temperature
  24
- Hot Water Flow Rate
  25
- Summer Mode (Hot Water Only)
  25
- Frost Protection
  25
- Pump Anti-Seize Function
  25
- Fault Condition
  25
6 Individual Settings

26
7 Converting the Appliance to Different Gas Types

29
8 Maintenance

32
- Pre-Service Check List
  33
- Description of Servicing Operations
  34
- Replacement of Parts
  38
- PCB Control Board and Transformer
  38
- Fan Assembly
  39
- Pump
  39
- 3-Way Diverter Valve
  40
- 3-Way Diverter Valve Motor
  40
- Sensors
  40
- Gas Valve
  41
- Domestic Hot Water Heat Exchanger
  41
- Electrode Assembly
  41
- Flow Switch
  42
9 Appendix

43

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Bosch Worchester GREENSTAR ZWB 7-27 HE combi Manuals

Bosch Worchester GREENSTAR ZWB 7-27 HE combi Installation And Servicing Instructions (48 pages)

Table of Contents

Safety Precautions

Symbols

1 Details of the Appliance

2 Installation Regulations

3 Installation

4 Electrical Connections

5 Commissioning

6 Individual Settings

7 Converting the Appliance to Different Gas Types

8 Maintenance

9 Appendix

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