5
x
Control
38
FA ROTEX A1 B0 - 10/2007
5.8
Wiring diagram
Fig. 5-18 Wiring diagram for oil condensing boiler A1 BO (shown with ROTEX THETA 23R Control)
1
Main switch
2
Burner malfunction indicator
3
STL indicator
4
Manometer
5
Controller: Central unit THETA 23R
17
safety temperature limiter (STL)
18
Stickers for connection diagram
19
Circulation pump for heating
20
3-way diverter valve
21
Oil burner
22
Outside temperature sensor
23
Storage tank temperature sensor
24
Flue gas temperature sensor
25
Return flow temperature sensor
26
Flow temperature sensor
27
Switchboard PCB
J1
3-pin circuit board connector with pump cable
J2
4-pin circuit board connector with valve cable
J3
6-pin circuit board connector with clamped
burner cable
J3A
Standard connector oil burner (7-pin)
J3B
2-pin plug for remote burner unlocking
J4
Communication connection internal (not loaded)
J5
4-pin circuit board connector with malfunction
indicator cable
J6
4-pin circuit board connector with clamped mains
cable and earthing slots
J7
7-pin circuit board connector for clamping a mixer
motor and a mixer circulation pump
J8
12-pin circuit board connector for clamping
sensors, BUS- and control lines (storage
temperature sensor and cable for external sensor
are clamped)
J9
5-pin circuit board connector with STL cable
J10
8-pin circuit board connector with flue gas, flow
and return flow sensor cable
J14
3-pin circuit board connector for clamping
a circulation pump
J15
4-pin circuit board connector with switch cable