Operating instructions

135
Components
Plug−in adaptor for external safety equipment, part no. 7143 526
For the connection of external safety equipment to DIN 4751−2
H Low water indicator
H Maximum pressure limiter
H Minimum pressure limiter
H Additional high limit safety cut−out
In addition for the connection of
H Controlled external burner shutdown
H Three external fault messages.
Upper part of the plug−in adaptor
A Wiring chamber
B External fault message
C KM BUS cable to the control unit
Zero volt contact on plug a−D.
The plug−in adaptor is automatically
recognised by the control unit as a
KM BUS user.
Any central fault message module
connected to plug gÖ (230 V~) will
also be switched ON.
5862730GB
A
DE1
103
145
C
B
103
DE2
103
B
103
DE3
103
B
103