RKI Instruments Beacon 800 - Manual (Page 15)

Beacon 800 Gas Monitor Operator’s Manual Wiring the Beacon 800 Gas Monitor • 12
Wiring the Beacon 800 Gas Monitor
This section describes procedures to connect the AC power source, DC power source,
external alarms, and detector heads. See Figure 5 for a general wiring diagram of all
external wiring to the Beacon 800.
NOTE: All connections to building electrical systems must be installed in accordance
with local requirements and must be installed by qualified personnel.
WARNING: Make all connections to the Beacon 800 before you plug in or turn on
the AC or DC power source. Before you make any wiring adjustments,
always verify that all power sources are not live.
Accessing the Terminal Strips
Perform the following procedure to gain access to the AC and controller terminal strips,
which are located behind the display board.
1. Turn off or unplug all incoming power to the Beacon 800 at the power source end.
2. Open the housing door, then place the power switch in the OFF position.
3. Loosen the two captive thumbscrews (on the right side of the display board) that
secure the board to the standoffs, until the screws are disengaged from the standoffs.
4. Gently pull the right side of the display board out toward the housing door. (The
standoffs under the left side of the display board are hinged, which allows the display
board to move in this manner.)
Connecting the AC Power Source and Earth Ground
NOTE: If you are using DC power as the primary power source, go to the next section,
“Connecting the DC Power Source.”
Perform the following procedure to connect the AC power source to the Beacon 800.
WARNING: Verify that the power source is unplugged or turned off at the power
source end before you continue with this procedure.
1. Locate the AC terminal strip (see Figure 1 on page 4).
2. Install an appropriately rated cable bushing or conduit in the right-most conduit hub on
the bottom of the Beacon 800 housing.
3. Guide the AC power cord or wires in conduit through the right-most conduit hub on the
bottom of the Beacon 800 housing.
CAUTION: Do not route power and detector head wiring through the same conduit hub.
The power wiring may disrupt the transmission of the detector head signal to
the monitor.