Gasboy CFN Series Site Controller III Manual de usuario descargar pdf (Pagina 28)

Trade Size (in)

Internal Diameter Area (sq. units) Fill Area (sq. units) 25% Fill

in mm in mm in mm

1/2 0.629 16 0.303 196 0.076 49

3/4 0.826 21 0.532 343 0.133 86

1 1.063 27 0.862 556 0.215 139

1-1/4 1.378 35 1.50 968 0.375 242

1-1/2 1.614 41 2.04 1314 0.509 329

2 2.087 53 3.36 2165 0.839 541

System Layout Conduit Layout/Installation Specifications

Page 24 MDE-4298D CFN Series Site Controller III Installation Manual · September 2009

Areas of Trade Size Conduit

To determine the conduit size required, refer to the table, “THHN/THWN Wire Areas” on

page 23, to find the area for each wire gauge. Add up all wire areas. Refer to the table

“Areas of Trade Size Conduit” and select the smallest number in the Fill Area (sq. units) 25% Fill

column (based on NEC 501-1) that comes closest to the total wire area but does not exceed it.

Conduit Layout/Installation Specifications

• All wiring must be installed and used in accordance with all building/fire codes, all Federal,

State, and Local codes, National Electrical Code (NFPA 70), NFPA 30, and Automotive and

Marine Service Station (NFPA 30A) codes and regulations. Canadian users must also comply

with the Canadian Electrical Code.

• All peripheral equipment connected to the RS-232 ports must be listed, have an Electronics

Industries Association (EIA) standard RS-232 communications protocol, and should not be

installed in a hazardous location.

• Power for the system components, data terminal, and modem must come from a separate

dedicated circuit breaker rated at no less than 10 Amp.

• All conduits must be made of metal to provide the necessary shielding.

• All conduit should be run underground, not overhead.

• DC pulser, DC RS-485 and/or RS-422 communication wires can be combined in the same

conduit. It is recommended that the DC pulser, RS-485 and/or RS-422 wiring be in a separate

metal conduit from any AC wires. However, the DC pulser, RS-485 and/or RS-422 wires can

share the conduit with AC wires if shielded cable is used as specified in

“Communication

Requirements” on page 33, “Short Haul Modem (SHM) RS-422” on page 39, and “Pulser

Wiring and Configuration” on page 53.

• Use the chart in “Wire Size” on page 44 to determine the wire gauge.

•Refer to “Conduit Requirements” on page 23 to determine the conduit size according to the

number of wires and wire gauge.

• RS-232 communication must not exceed 100 feet. RS-232 communication wires must be in a

metal conduit separate from any AC wires.

• For communication distances exceeding 100 feet, you must use Gasboy Short Haul Modems

(SHMs).

• In submersible applications, starter relays are always recommended; however, the system can

directly drive motors up to 3/4 HP at 120 VAC, or 1-1/2 HP at 240 VAC.

• Suction pumps over 3/4 HP at 120/240 VAC, or 1-1/2 HP at 240 VAC must use a starter

relay. Wire the starter relay in place of the motor in the applicable pump wiring drawing.

• A minimum distance of 18” must be maintained between the ICR post and any of the pumps/

remote dispensers.

• In the conduit layouts, disregard the submersible pumps in the drawings if the hose outlets are

suction pumps.

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Gasboy CFN Series Site Controller III Manual de usuario Pagina 28

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