Appendix A - Connection Diagram - Bosch SSB1000 SA Manual

46 | Service reminder

Appendix A - Connection diagram

A .1 Connection diagram
The following connection diagram is specifically assigned to the 905MN Control:
Open Thermostat interface or
Room Thermostat ON/OFF
REMOTE
DISPLAY
PROG. INPUT 5:
1) T_Return
T_DHW_Out/T_Store
PROG. INPUT 6:
1) T_Flue_1 (sensor)
(Flue gas sensor/switch)
PROG. INPUT 1:
PROG INPUT 2:
3) Heat_Exchanger_Flow sensor
PROG INPUT 3:
2) Gas Pressure switch (NC)
PROG INPUT 8:
2) Water Pressure switch (NC)
General Pump Control
Safety Limit (ECO)
24VDC
PROG INPUT 4:
Low Water Cut Off 1
(Safe)
Low Water Cut Off 2
(Not functional)
AL-BUS/PC Connection
AL-BUS Power
1) Extra 5V sensor supply is optional, not together with 0-10V
6720892984 (2019/02) US
0...10V
J9-1
0V(GND)
J9-3
J9-2
J9-4
J10-1
J10-2
J10-5
J10-6
COMM.
J6-1
J6-8
24V
J6-2
J6-9
J6-3
J6-10
J6-4
J6-11
J6-5
J6-12
J6-6
J6-13
J6-7
J6-14
J7-2
J7-3
+5V
J7-6
0V(GND)
J7-7
J7-8
J7-9
J7-10
J7-2
J7-4
J7-1
PWM
J7-5
0V(GND)
J7-10
J12-1
J12-4
J12-2
J12-5
J12-3
J12-6
LWCO1
J11-1
LWCO1 GND
J11-3
J11-2
J11-4
J8-1
J8-2
ON
S1
OFF
T1
1K
BURNER
J17
J2 1-6
J1-5
J1-1
J1-2
J1-4
J1-8
L
J3-1
N
J3-7
L
J3-2
L
J3-3
N
J3-8
L
J3-6
J3-4
L
N
J3-9
J3-5
J3-10
J4-1
J4-2 L
J4-3 N
HALL
J4-4
HALL Supply
J4-5
J4-6 OV GND
J5-1
J5-2
DIPSWITCH
J14
Int. ionization
Ignition
Spark Return
PE
L MAINS SUPPLY
(120VAC, 60Hz)
N
SWL
PE
PROG. OUTPUT 4:
CONFIG 1:
2) CH Pump
3) DHW Pump
PROG. OUTPUT 1
2) CH Pump
PROG. OUTPUT 3:
0) Disabled
10) Air Damper
PROG. OUTPUT 5:
L
1) General Pump
N
PROG. OUTPUT 2
L
0) Disabled
N
6) Alarm Relay
FAN
(120VAC)
PWM interface
GAS VALVE
(120VrAC)
SSB