Main Power Connection; Remote Sensor Connection; Dvp-120 - Macurco DVP-120B User Instructions

Detection and ventilation control panel
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3.3 Main Power Connection

The main power cable should be routed into the bottom left conduit entry. Macurco recommends a minimum wire size of AWG18 and the
wire insulator must be rated for 140°F (60°C) service. The modular connector will accept wire from 12 to 24 AWG. The safety ground
wire should be secured to the ground stud at the bottom left of the cabinet with the lock washer and nut supplied. Use a ring terminal for
the ground connection. Refer to Table 3-1 for DVP-120 power connections. The line and neutral wires should be stripped 1/4 in. (6.5
mm), insert the wire into the wire cavity of the modular connector and tighten the screw clamp. Ensure that the wire cannot be easily
pulled from the connector. Plug the modular connector into AC~ on the PCB and ensure that it latches into the header properly.

3.4 Remote Sensor Connection

3.4.1

DVP-120

Each remote sensor is connected by a four-wire connection – two wires for DC power and two wires for the 4 – 20 mA loop connection.
The sensors are connected to the control panel PCB with modular connectors, two sensors per connector. See Figure 3-5 for a view of
a typical sensor connector. Refer to Table 3-2 for wire size recommendations.
Signal
Line (120/220/240/250 VAC)
Neutral
Ground
Table 3-1 Main Power Connections
Figure 3-3 System Wiring Diagram
Connector
Pin Number
AC~
AC~
Ground Stud
9
3
1
n/a

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