Efficiency Statements - A.O. Smith AO-WH-SOFT-450T Owner's Manual

EFFICIENCY STATEMENTS

20
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):
MODEL
AO-WH-SOFT-450T
AO-WH-SOFT-PRO-300
AO-WH-SOFT-PRO-500
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
NAME OF
SUBSTANCE
Barium
Radium 226/228
Salt and Capacity Range
MODEL
AO-WH-SOFT-450T
AO-WH-SOFT-PRO-300
AO-WH-SOFT-PRO-500
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RATED EFFICIENCY
5,210 grains / lb
(742 grams/kg)
5,210 grains / lb
(742 grams/kg)
5,210 grains / lb
(742 grams/kg)
USEPA MAX.
CONTAMINANT
LEVEL
2.0 mg / L
5 pCi / L
MINIMUM
CAPACITY/SALT
6,510 grains / 1.25 lbs
5,210 grains / 1 lb
8,650 grains / 1.66 lbs
SALT DOSAGE
1.25 lbs (0.57 kg)
1 lb (0.45 kg)
1.66 lbs (0.75 kg)
INFLUENT CHALLENGE LEVEL
10 +/- 10% mg / L
226 / 228: 25 pCi / L
MIDDLE
CAPACITY/SALT
35,960 grains / 10 lbs
20,360 grains / 5 lbs
33,410 grains / 8 lbs
CAPACITY
AT THAT DOSAGE
6,510 grains
(422 grams)
5,210 grains
(338 grams)
8,650 grains
(561 grams)
MAXIMUM
CAPACITY/SALT
45,000 grains / 18.75 lbs
30,000 grains / 9 lbs
50,000 grains / 15 lbs