Potterton SIRIUS FS Installation & Servicing Instructions Manual page 29

5.3.4 BMS Control - Use of wiring panel connections
BMS Indicators (LMS14 Interface PCB)
The boiler has volt free outputs (or can be used with voltages up to 230v), which can
be connected to a Building Management System or a remote indicator panel.
Fault - When no fault is present the circuit is open. After a fault occurs on any of the
burners within the boiler, a relay on the interface PCB will activate and close the circuit,
after the delay period set on the LMS14 Interface PCB (factory default is 5 minutes)
Fault delay adjustment - Remove the front door panel and right hand electrical cover
(see section 7.2 for details). Using a small flatblade screwdriver set the pointer of the
pot to the required delay in minutes (0 - 10 minutes range).
Flame on - When no heat engines are in operation the circuit is open. When the boiler
burners are in operation a relay on the interface PCB will activate and close the circuit.
LPB / OZW Communication
Two wires provide communications with an external Siemens cascade controller. This
can be used to control cascades of multiple boilers or be used with an interface device
to facilitate communications on a Web based system or BMS. Using a Siemens
OZW672 Web-Server it is possible to establish remote communications with Siemens
own software or free phone app. Connections to BMS protocols such as BACnet or Lon
are also possible. Please contact Potterton Commercial for further details.
Sirius FS
27
GB/IE