Connecting The Central Fault Message Facility; Connection Of Low Water Cut-Off Device 150; Connecting To Safety Equipment 150 - Viessmann VITOTRONIC300 Installation And Service Instructions Manual

Vitotronic 300, GW2B Installation and Service

Connecting the Central Fault Message Facility

Connection of Low Water Cut-off Device
Legend
aBH Power supply for accessories.
aBÖ Connection for external equipment.
Low water cut-off (typical)
A
Connections to Safety Equipment
Legend
A DIN rail
B Low water cutoff
C Other safety controls
Rated voltage: 120V~
Rated current: max. 2A~
150
1. Remove jumper between terminals 12 and 15.
2. Make connection as shown in diagram.
CAUTION
The diagram shown is only a simplified conceptual
drawing of a typical low water cut off (LWCO) device.
Refer to the manual specific to the device for
interconnection details.
150
1. Connect the external safety equipment in series.
Installation Sequence
43