Models 9120k and 9820k – Gasboy 9120K Series Installation User Manual
Page 17
MDE-4567C 9120K and 9820K Series AST Pumps Installation and Operation Manual · September 2008
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Conduit
Wiring
Use the charts in
on
as a guideline for determining the
necessary conduit sizes for wiring of the Gasboy Series 9120K and 9820K pumping unit.
When actually determining the size of conduit, it may be necessary to increase the size of
conduit because of a long run or large amount of bends. The installer should determine the
orientation of the wire runs according to the layout of the components at the site and the
applicable Gasboy wiring diagrams.
Models 9120K and 9820K
It is recommended that high voltage AC power wires to the register assembly (not between the
register and pumping unit) be installed in a separate conduit from the DC pulser output wires
(when used) and must not be run in any sort of common conduit or trough.
However, if AC and DC power wires share the conduit, the DC wiring must consist of UL-
listed cable with the specifications described in
on
. Only AC wires for the
system and pumps can be installed in this conduit for this application. Wiring between a Fuel
Point Reader (FPR) and its pre-amp junction box (J-Box) is intrinsically safe and must be run
in a conduit with only other intrinsically safe wiring. It cannot be run in conduit with AC, DC,
RS-485, or pulser wiring, regardless of the cable type used. See C35628 Fuel Point Reader
Installation and Retrofit Manual for details.
When the Gasboy Series 9X20K and 9820K pumps are being installed with a fuel
management system other than a Gasboy System, see the manufacturer installation manual for
their specific conduit requirements.
Wiring between the 9820K register and pumping unit is installed in a single conduit. This
includes the wiring for the AC control of the pumping unit and the internal pulser. A special
cable, as described in
must be used for the connection between the
pulser inside the pumping unit to the register assembly.