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The HAYWARD cl110ef is an automatic chlorine feeder designed for consistent, hands-off chemical dosing in residential pool systems. It operates as an off-line (open line) unit, meaning it connects to the return plumbing after the filter and heater without interrupting the main flow path. The feeder holds up to 4.2 pounds of trichlor tablets or sticks and meters chlorine into the water at an adjustable rate. ABS construction resists corrosion from continuous chemical exposure. Licensed pool service technicians and plumbers typically handle installation and initial setup.
This feeder suits in-ground pool applications, both new construction plumbing and aftermarket retrofit installs on existing systems. The off-line design gives installers flexibility in positioning, as it taps into the return line without requiring the unit to sit in the primary flow path. It is also suited for above-ground pool setups where the plumbing supports a bypass or off-line connection. The adjustable flow control allows the technician to dial in the chlorine output to match pool volume and bather load.
Designed as an OEM-style automatic chlorine feeder for in-ground residential pool systems using an off-line plumbing configuration.
Installation should be performed by a licensed pool professional or plumber familiar with chemical feeder plumbing. Shut off the pool pump and depressurize the return line before making any connections. The feeder must be installed downstream of the filter and heater to prevent chemical damage to equipment. Always load tablets or sticks only when the feeder is fully depressurized and the lid is dry.
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