Gasboy Atlas Fuel Systems Installation Manual - Manual (Page 21)

MDE-4331M Atlas® Fuel Systems Installation Manual · September 2014 Page 4-3
External Valve Control Lines for Atlas Electronic Series
External Valve
The external valve line is used to directly power an anti-siphon valve mounted on top of an
AST. The valve must operate at the same voltage as the pump motor and the current draw must
not exceed 1 A, or the valve must be switched through an external relay controlled by the
external valve line. Do not connect two or more external valve lines together. If more than one
pump is drawing from the tank, separate anti-siphon valves must be installed, or each external
valve line must operate an external relay, which then operates the valve.
Neutral Feed
The neutral feed is the AC current return line back to the breaker panel for all attached devices
(pump motor, reset motor, and solenoid valves).
Auth Input Dispensers
The auth input is a 115 VAC (230 VAC international) input that is required to power and
authorize the auth control line. This line is used to provide authorization for the dispensing
unit (when enabled, refer to MDE-4334 Atlas Start-up/Service Manual). If this line is
controlled by an FMS using solid state relays, a resistor assembly must be installed between
the auth feed line and feed neutral to prevent false triggering of the authorization input. The
resistor assembly is 8.2 K Ohm, 10 W (part number C05818) for 115/230 VAC domestic and
30 K Ohm, 10 W (part number C06683) for 230 VAC international wiring. Cash Flow
Network (CFN) systems require the resistor assembly only when they are used with the Atlas
commercial electronic pump/dispenser operating in standalone mode. Operating the Atlas
commercial electronic unit in standalone mode with a CFN system requires an optional
mechanical pump control unit. This line also supplies power, which is switched to slow flow
and fast flow valves along with the switch detect signal. Two lines are provided for twins.
If the Atlas commercial electronic unit is to be controlled through the authorization of this line,
special care must be taken in the wiring of submersible control lines when a common
submersible is used for more than 1-hose outlet. For more information, refer to
“Submersible
Starter Drive (Subm Starter Drive)” and “Submersible Pump Drive (Subm Pump Drive)”

on page 4-4 .
Units with Standard Submersible Starter Drive (Subm Starter Drive)
Power for the submersible start drive line originates from the AUTH input. The submersible
starter relay line in standard remote dispensers is not capable of directly powering a
submersible pump. A starter relay must be used. Control lines for twin remote dispensers can
be combined together and powered by one breaker if individual control of each side is not
required. In site configuration using multiple remote dispensers, power for control lines of up
to 8-hose outlets (eight singles or eight twins) can be supplied from one breaker.