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240 Operators Manual

Model 240 Operator Manual Rev. 1.8 Page 4 of 29

4. Installation

4.1 Mounting and Cable Penetrations

Securely mount the Model 240 N4X enclosure per the mounting dimensions provided in

Figure 2.

Provide for suitable conduit/cable entries in the bottom of the enclosure. Keep AC power separate from

DC signals in conduit connections and runs.

Mounting Holes 5/16 Dia.

Figure 2 Dimensional View of Enclosure

4.2 Power and I/O Connections

Power and I/O connections are made on the Motherboard PCB, mounted inside on the back of the

enclosure. Plug-in male connector terminal blocks are provided for input wire terminations. This

connector style provides for quick disconnect convenience during replacement or servicing. (Refer to

Figure 4)

The connections for serial polling of gas sensors and RS-232 PC downloading activities are located at J7 on

the Controller PCB. (Refer to

Figure 5)

4.2.1 AC Power

Connect the 115 or 230VAC input wiring to the terminals at J2, labeled “AC IN” in

Figure 3 and Figure 4.

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Detcon 240 Manual de Instruções Página 8