
List of contents
2FA ROTEX A1 BOe - 02/2014
1 Guarantee and conformity . . . . . . . . . . . . . 3
1.1 Warranty conditions . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 Declaration of conformity . . . . . . . . . . . . . . . . . . . .3
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Observing instructions . . . . . . . . . . . . . . . . . . . . . .4
2.2 Warning signs and explanation of symbols. . . . . . .4
2.3 Avoid danger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.4 Proper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.5 Instructions for operating safety . . . . . . . . . . . . . . .5
2.5.1 Before working on the heating system . . . . . . . . . . . . 5
2.5.2 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5.3 Installation room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5.4 Requirements for the heating water . . . . . . . . . . . . . . 5
2.5.5 Heating system and sanitary connection. . . . . . . . . . . 5
2.5.6 Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5.7 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5.8 Instructing the user/owner . . . . . . . . . . . . . . . . . . . . . . 5
3 Product description. . . . . . . . . . . . . . . . . . . 6
3.1 Boiler design and components . . . . . . . . . . . . . . . .6
3.2 Brief description . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4 Set-up and installation . . . . . . . . . . . . . . . . 8
4.1 Dimensions and connection dimensions. . . . . . . . .8
4.2 Different set-ups . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.2.1 Operation independent of ambient air . . . . . . . . . . . . 11
4.2.2 Operation partially independent of ambient air . . . . . 11
4.2.3 Ambient air dependent operation . . . . . . . . . . . . . . . 12
4.3 Transport and delivery . . . . . . . . . . . . . . . . . . . . .12
4.4 Installing the Oil condensing boiler . . . . . . . . . . . .13
4.4.1 Selecting the installation site . . . . . . . . . . . . . . . . . . 13
4.4.2 Setting up the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.5 Air/flue system (LAS) . . . . . . . . . . . . . . . . . . . . . .14
4.5.1 General instructions for flue system . . . . . . . . . . . . . 14
4.5.2 Connecting the flue gas line to the ROTEX A1 BO . . 15
4.5.3 Flue gas system kits . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6 Water connection . . . . . . . . . . . . . . . . . . . . . . . . .17
4.7 Connect the condensate drain . . . . . . . . . . . . . . .18
4.8 Establish connection and electrical equipment. . .18
4.8.1 Instructions concerning electrical connection . . . . . . 18
4.8.2 Establishing the electrical connection . . . . . . . . . . . . 18
4.8.3 Connecting the temperature sensor . . . . . . . . . . . . . 19
4.8.4 Connect the additional electrical components. . . . . . 20
4.9 Connecting and filling up the oil line . . . . . . . . . . .20
4.10 Filling the heating system . . . . . . . . . . . . . . . . . .20
5 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1 Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.2 Checklists for start-up . . . . . . . . . . . . . . . . . . . . . .22
6 Control unit . . . . . . . . . . . . . . . . . . . . . . . . 23
6.1 Operating elements on the boiler control panel . .23
6.2 Replacing the operating section RoCon B1 . . . . .24
6.3 Changing the boiler control panel . . . . . . . . . . . . .24
6.4 Changing cables . . . . . . . . . . . . . . . . . . . . . . . . . .25
6.5 Changing the sensors. . . . . . . . . . . . . . . . . . . . . .26
6.5.1 Changing flow / return flow temperature sensor . . . . 26
6.5.2 Changing the flue gas temperature sensor . . . . . . . . 27
6.5.3 Changing the storage tank temperature sensor . . . . 27
6.6 Replacing the fuse or control panel circuit board .28
6.7 Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .28
7 Oil burner . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.1 Design and brief description . . . . . . . . . . . . . . . . .30
7.2 Safety function . . . . . . . . . . . . . . . . . . . . . . . . . . .31
7.3 Burner setting . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
7.3.1 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.3.2 Instructions for burner setting . . . . . . . . . . . . . . . . . . 32
7.3.3 Check vacuum in the oil pump and set the oil
pump pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.3.4 Set air quantity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.3.5 Recirculation gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.3.6 Check and set electrode distance and the
distance between oil nozzles and air nozzles . . . . . . 34
7.4 Removing/fitting the burner. . . . . . . . . . . . . . . . . .35
7.4.1 Move the burner to service position. . . . . . . . . . . . . . 35
7.4.2 Removing/fitting the flame tube. . . . . . . . . . . . . . . . . 36
7.4.3 Removing/fitting the burner . . . . . . . . . . . . . . . . . . . . 36
7.5 Removing/fitting the air nozzle . . . . . . . . . . . . . . .36
7.6 Automatic firing connections. . . . . . . . . . . . . . . . .37
7.7 Ignition transformer with flame monitor. . . . . . . . .37
7.8 Oil burner pump and oil filter. . . . . . . . . . . . . . . . .37
8 Hydraulic connection . . . . . . . . . . . . . . . . .38
8.1 Connection accessories . . . . . . . . . . . . . . . . . . . .38
8.1.1 Safety group SBG A1 . . . . . . . . . . . . . . . . . . . . . . . . 38
8.1.2 Connection kit A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.2 Hydraulic system connection . . . . . . . . . . . . . . . .40
9 Service and maintenance . . . . . . . . . . . . . .41
9.1 General overview of service and maintenance. . .41
9.2 Service and maintenance tasks . . . . . . . . . . . . . .41
9.2.1 Removing panelling (and cleaning it) . . . . . . . . . . . . 41
9.2.2 Checking the connections and pipes. . . . . . . . . . . . .42
9.2.3 Checking and cleaning the condensate drain.. . . . . . 42
9.2.4 Checking the flue gas temperature . . . . . . . . . . . . . . 44
9.2.5 Checking and cleaning the combustion chamber . . . 45
9.2.6 Checking the oil filter and cleaning the oil pump
filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
9.2.7 Checking the burner . . . . . . . . . . . . . . . . . . . . . . . . .46
9.2.8 Replacing the oil nozzle and ignition electrodes . . . . 47
10 Faults and malfunctions . . . . . . . . . . . . . . .48
10.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .48
10.2 Overview of possible malfunctions . . . . . . . . . . . .48
10.3 Fault codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
10.4 Rectifying burner faults and STB faults . . . . . . . .51
10.5 Emergency operation . . . . . . . . . . . . . . . . . . . . . .51
11 Taking out of service. . . . . . . . . . . . . . . . . .52
11.1 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . .52
11.2 Final shutdown and disposal . . . . . . . . . . . . . . . .52
12 Technical data . . . . . . . . . . . . . . . . . . . . . . .53
12.1 Basic Data Oil Boiler. . . . . . . . . . . . . . . . . . . . . . .53
12.2 Heating circulation pump and 3-way diverter
valve (A1 BO - all types) . . . . . . . . . . . . . . . . . . . .55
12.3 Flow rate and residual feed height . . . . . . . . . . . .55
12.4 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . .56
13 Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
14 List of keywords . . . . . . . . . . . . . . . . . . . . .59
15 For the chimney sweep . . . . . . . . . . . . . . .60
15.1 Data for designing the flue gas pipe . . . . . . . . . . .60
15.2 Emissions measurement . . . . . . . . . . . . . . . . . . .60