Ventilation Requirements; Power Connection; Figure 2-3 Power & Ecd Connector - Siemens VIU-20 Installation And Instruction

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2.1.2 Ventilation Requirements

The VIU units do not require forced ventilation and are rated for a temperature range of -40°C to
+70°C (-40°F to +158°F).

2.1.3 Power Connection

DC Power is supplied to each VIU unit via a 2-terminal screw-type connector located at the back
of the top panel. This connector (Figure 2-3) also holds the External Configuration Device
(ECD). The power connector and ECD can only be inserted into the corresponding connectors
on the top panel in one direction. Battery polarity is indicated on the VIU top panel.
SIG-00-07-11
Version No.: B.2
Figure 2-3 Power & ECD Connector
WHEN INSTALLING THE POWER / ECD CONNECTOR, FIRST
ALIGN THE ECD CONNECTOR WITH THE RECEPTACLE IN THE
VIU, AND THEN INSERT THE POWER CONNECTOR PORTION.
DO NOT FORCE THE ECD CONNECTOR AS THE RECEPTACLE
IN THE VIU MAY BECOME DAMAGED.
THE ECD SHOULD NOT BE REMOVED OR REPLACED. IT
CONTAINS VITAL SITE-SPECIFIC DATA REQUIRED FOR
PROPER OPERATION OF THE SIGNALING SYSTEM. IF THE ECD
IS SWAPPED, THE SYSTEM MUST BE RETESTED.
CAUTION
WARNING
2-3
SEPTEMBER 2012 (REVISED OCTOBER 2019)
INSTALLATION