Bedienungsanleitung Buderus SSB255 (Seite 2 von 68) (Englisch)

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Contents

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

1.1 Key to symbols..................................3

1.2 Safety instructions ...............................3

1.3 General warning.................................3

Product description ..........................4

2.1 Introduction.....................................4

2.2 Scope of delivery ................................4

2.3 Proper use .....................................5

2.4 Environmental responsibility / disposal ...............5

2.5 Dimensions and Connections.......................6

2.6 Main components................................9

2.7 Technical data .................................10

2.8 Efficiency Curves ...............................11

Regulations ...............................13

3.1 Compliance with standards and regulations...........13

3.2 Operating limits of the boiler.......................13

3.3 Additional regulations for installation in Massachusetts ..13

Installation ................................14

4.1 Packaging and product identification ................14

4.2 Installation room................................14

4.3 Water Chemistry Guidelines.......................15

4.4 Hydraulic connection ............................15

4.4.1 Low water cut off ...............................16

4.4.2 High limit safety switch ...........................16

4.4.3 Pressure relief valve (PRV) .......................16

4.4.4 Expansion tank.................................16

4.4.5 Pump ........................................17

4.4.6 Condensate removal ............................19

4.5 Electrical connection ............................19

4.5.1 Power supply cable connection ....................19

4.5.2 Access to the electrical terminal strip ................20

4.5.3 Room thermostat connection ......................20

4.5.4 Outside temperature sensor.......................20

4.5.5 Electrical wiring diagram .........................21

4.6 Gas supply piping...............................22

4.6.1 Connection of gas supply piping ...................22

4.6.2 Gas type conversion.............................22

4.7 Venting and air piping system .....................23

4.7.1 General venting and combustion air piping system .....24

4.7.2 Connecting flue gas systems ......................25

4.7.3 Installation of the exhaust and air intake system .......25

4.7.4 Vent and combustion air pipe length [For single boiler

installations] ...................................28

4.7.5 Approved examples of horizontal and vertical venting

installation ....................................29

4.7.6 Multiple boiler ..................................32

4.7.7 De-rating for altitude installation....................33

Commissioning (for single boiler application) ..........34

5.1 Switching the appliance ON/OFF ...................34

5.2 Setting date and time ............................34

5.3 Setting CH and DHW setpoint .....................35

5.4 Boiler information ...............................35

5.5 Parameters list .................................36

5.6 Outdoor reset ..................................36

5.7 Adjusting and setting CO

limits ....................39

5.8 Setting frost protection ...........................40

Troubleshooting.............................40

6.1 Error codes are shown on the display ...............40

6.1.1 Lockout errors .................................41

6.1.2 Blocking errors .................................42

6.2 Errors not shown on display .......................44

6.3 Sensor Resistance table .........................44

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

7.1 General.......................................45

7.2 Maintenance / inspection schedule for end user .......45

7.3 Maintenance / inspection schedule for licensed

contractor / gas fitter.............................45

7.3.1 Gas leaking inspection ...........................45

7.3.2 Check exhaust and combustion air pipe system .......45

7.3.3 Inspection of ignition electrode.....................45

7.3.4 Checking for wiring and connections ................45

7.3.5 Burner gasket inspection .........................45

Applications ...............................46

8.1 Multiple zone with indirect tank (pump for each zone) ...46

8.1.1 Settings ......................................47

8.2 Multiple zone with indirect tank (valve for each zone) ...48

8.2.1 Settings ......................................49

8.3 Cascade connection.............................50

8.3.1 Settings ......................................53

Commissioning log for the appliance ...............54

Spare parts ................................56

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