Gasboy CFN Islander II - Manual (Page 45)

CFN Series System
4-2 03/07/03
POWER REQUIREMENTS
Suction Pumps
The CFN pump control unit is capable of directly driving pump motors up to 3/4 HP at 120/240
VAC or 1-1/2 HP at 240 VAC. A starter relay must be used with pump motors exceeding these
limitations. A separate circuit breaker should be supplied for each pump to meet the current
requirements and to allow for isolated control with the circuit breaker panel in case of problems.
Remote Dispensers
The CFN pump control unit is capable of directly driving submersible pumps up to 3/4 HP at
120/240 VAC or 1-1/2 HP at 240 VAC. A remote dispenser with a submersible pump rated over
these limitations will require the use of a submersible starter relay. A separate circuit breaker
should be supplied for each remote dispenser in cases where it will directly drive the submersible
pump. Remote dispensers may be grouped together on a single breaker when the submersible
pump has its own breaker. It is recommended that no more than two remote dispensers be
powered from one breaker to maintain isolated control with the circuit breaker panel in case of
problems.
GASBOY 9800 Pumps/Remote Dispensers
GASBOY 9800 Series pumps and remote dispensers do not use the CFN Pump Control Unit.
They are wired as standalone units. Refer to the 9800 Pumps and Dispensers
Installation/Operation Manual, 035235 for wiring diagrams and instructions.
WIRE SIZE
Table 4-1 shows the required AC wire size for suction and submersible pumps based on the HP
rating of the pump motor and the distance from the circuit breaker to the pump/remote dispenser
for both 120 and 240 volt units. Use this table as a guide for selecting the proper size wire for
your installation. All wire should be stranded.
The wire size for the switch detect from the pump should be 14 AWG. The wire size for the
control lines of a remote dispenser should be 12 AWG. These control lines are used to supply
power for the reset mechanism, solenoid valve, and submersible starter relay (when the
submersible pump is not directly powered by the remote dispenser). The wire size for DC pulsers
should be 18 AWG. This size exceeds the current requirements of the pulser and is primarily
used for its strength.
Table 4-1. Wire Size