Manual Buderus SB625WS (page 2 of 52) (English)

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2 | Contents

SB625WS/SB745WS6 720 805 218 (2016/02)

Contents

1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . 3

1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 3

2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Certification and testing mark . . . . . . . . . . . . . . . . . . . . . 6

2.3 Regulations and Guidelines . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.1 National regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.2 Compliance with standards and regulations . . . . . . . . . . 6

2.3.3 Additional regulations for installations in the

Commonwealth of Massachusetts . . . . . . . . . . . . . . . . . 6

2.4 Suitable fuels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.6 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.7 Tools, materials and auxiliary equipment . . . . . . . . . . . . 8

2.8 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.9 Dimensions and specifications . . . . . . . . . . . . . . . . . . . . 9

2.9.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.9.2 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.9.3 Water connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3 Water treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1 Chemical and physical characteristics . . . . . . . . . . . . . 13

3.2 Central heating system . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2.1 Limescale deposits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2.2 Deposit corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.2.3 Stray current corrosion . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.2.4 Diffused and localized acid corrosion . . . . . . . . . . . . . . 14

3.3 New central heating systems . . . . . . . . . . . . . . . . . . . . . 14

3.4 Reconditioning old heating systems . . . . . . . . . . . . . . . 14

3.5 Elimination air and gas from central heating system . . 14

3.6 Use of Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.1 Boiler Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 Assembling the paneling . . . . . . . . . . . . . . . . . . . . . . . . 17

5.3 Refitting the door hinges . . . . . . . . . . . . . . . . . . . . . . . . 19

5.3.1 Changing the direction of door opening . . . . . . . . . . . . 19

5.3.2 Removing the hinge assembly “B” . . . . . . . . . . . . . . . . . 22

5.4 Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.5 Combustion gas exhaust . . . . . . . . . . . . . . . . . . . . . . . . 23

5.6 Venting Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.7 Code Required Vent Terminations . . . . . . . . . . . . . . . . . 24

5.8 Combustion Air from outside the building . . . . . . . . . . 24

5.9 Combustion Air from an adjacent room . . . . . . . . . . . . 25

5.10 Condensate Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.11 Condensate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.11.1 Draining the condensate . . . . . . . . . . . . . . . . . . . . . . . . 25

5.11.2 Neutralizing the condensate . . . . . . . . . . . . . . . . . . . . . 25

6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.1 Control unit settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.2 Hydraulic connection to the heating system . . . . . . . . . 27

6.3 Hydraulic flow through boiler . . . . . . . . . . . . . . . . . . . . 27

6.4 Making the electrical connection . . . . . . . . . . . . . . . . . . 28

6.5 Fitting temperature sensors . . . . . . . . . . . . . . . . . . . . . 29

6.6 Flushing the heating system . . . . . . . . . . . . . . . . . . . . . 29

6.7 Filling the heating system . . . . . . . . . . . . . . . . . . . . . . . 30

6.8 Preparing the heating system for operation . . . . . . . . . 30

6.9 Commissioning the control unit and burner . . . . . . . . . 30

6.10 Setting control unit parameters . . . . . . . . . . . . . . . . . . . 30

6.11 Commissioning report . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7 Shutting down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.1 Shutting down the heating system . . . . . . . . . . . . . . . . 32

7.2 Shutting down the heating system in an emergency . . 32

8 Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.1 Why is regular maintenance important? . . . . . . . . . . . . 32

8.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.2.1 Opening the door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.2.2 Adjusting the door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.3 Cleaning the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.4 Checking and correcting the water pressure . . . . . . . . 34

8.4.1 When should you check the water pressure in the

heating system? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.4.2 Sealed unvented systems . . . . . . . . . . . . . . . . . . . . . . . 35

8.5 Inspection and maintenance reports . . . . . . . . . . . . . . 36

9 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

11 Environmental protection/disposal . . . . . . . . . . . . . . . . . . . . . 46

12 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

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Others manual(s) of Buderus SB625WS

Buderus SB625WS User Manual - English - 12 pages

Buderus SB625WS Installation Guide - French - 56 pages

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Buderus SB625WS Manual

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