Franklin Electric Inline 1100, Owner'S Manual

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Inline Constant Pressure System
5
Constant Pressure Introduction
The Franklin Electric Inline System provides consistent water pressure regulation using advanced
electronics to drive the pump/motor according to the system’s real-time demand. The water
pressure demand is under constant monitoring through a highly accurate, heavy-duty, long-life
pressure sensor, which is included with and wired into the system at the time of installation. By
adjusting the pump/motor speed, the Inline System automatically reacts to any change in system
demand while maintaining a constant output pressure. The Inline System’s constant output
pressure should not fluctuate more than a psi or two, even though the overall system’s water
flow requirement may change dramatically. For example, a small demand on the system, such as
a bathroom faucet, results in the motor/pump running at its lowest speed. As greater demands
are placed on the system, such as opening additional faucets or using appliances, the speed
increases accordingly to maintain the desired system pressure.
System Diagnostics
In addition to regulating pump pressure and accurately controlling motor operation, the Inline
System continuously monitors system performance and can detect a variety of abnormal
conditions. In many cases, the controller will compensate as needed to maintain continuous
system operation. But, if there is high risk of equipment damage, the controller will protect the
system by shutting itself down. To help identify that there is a problem with the system (which
includes incoming water and electricity from the utility company), the Inline System will display
that there is a fault condition. See Troubleshooting section for fault codes. If possible, the
controller will try to restart when the fault condition subsides.
Water Over-Temperature Shut-Off
In the event of inadequate water supply, such as closure of the incoming water supply or system
component failure, the unit has a potential to run continuously. This operation can allow for
heating of the water inside the Inline System. To reduce the amount of heating, Inline Systems are
equipped with a thermal cutoff switch. See Troubleshooting section for fault codes. Once the Inline
System cools, the unit will automatically resume operation.
Thermal Temperature Limits:
Maximum shut-off temperature - 150 °F (65 °C)
Minimum reset temperature - 118 °F (48 °C )