Install Instructions

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EFFICIENCY STATEMENTS
Name of Substance
USEPA Max.
Contaminant Level
Influent Challenge Level
Barium
2.0 mg/L 10 +/- 10% mg/L
Radium 226/228
5 pCi/L 226/228: 25 pCi/L
Model Rated Efficiency Salt Dosage
Capacity at That
Dosage
AOW-S400
5,210 grains/lb (742 grams/kg) 1 lb (0.45 kg) 5,210 grains (338 grams)
AOW-S500
5,210 grains/lb (742 grams/kg) 1.66 lb (0.75 kg) 8,650 grains (561 grams)
This product is efficiency rated according to NSF/ANSI 44. The stated efficiencies are valid
only at the specified salt dosage and 7.0 gpm (26.5 L/min):
An efficiency-rated water softener is a demand-initiated regeneration softener that also
complies with specific performance specifications intended to minimize the amount of
regenerant brine and water used in its operation.
Efficiency-rated water softeners shall have a rated salt efficiency of not less than 3,350
grains of total hardness exchange per pound of salt (based on NaCI equivalency) (477 grams
of total hardness exchange per kilogram of salt), and shall not deliver more salt than its
listed rating.
Efficiency is measured by a laboratory test described in NSF/ANSI 44. The test represents
the maximum possible efficiency that the system can achieve. Operational efficiency is the
actual efficiency achieved after the system has been installed. It is typically less than the
efficiency due to individual application factors including water hardness, water usage, and
other contaminates that reduce the softeners’ capacity.
Reduction Capabilities for Specific Contaminants
Salt and Capacity Range
Model Minimum Capacity/Salt Middle Capacity/Salt Maximum Capacity/Salt
AOW-S400
5,210 grains/1lb 28,775 grains/8 lb 34,800 grains/15lb
AOW-S500
8,650 grains/1.66lb 33,410 grains/8lb 49,800 grains/15lb