Efficiency Statements; Specifications - AO Smith AO-WH-SOFT-350 Manual Del Propietário

EFFICIENCY STATEMENTS

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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 Rated Efficiency
AO-WH-
5,210 grains/lb (742 grams/kg)
SOFT-350
AO-WH-
5,210 grains/lb (742 grams/kg)
SOFT-400T
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
USEPA Max.
Name of Substance
Contaminant Level
Barium
2.0 mg/L
Radium 226/228
5 pCi/L
Salt and Capacity Range
Model Minimum Capacity/Salt
AO-WH-
5,210 grains/1lb
SOFT-350
AO-WH-
6,510 grains/1.25lb
SOFT-400T
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Capacity at That
Salt Dosage
Dosage
1 lb (0.45 kg) 5,210 grains (338 grams)
1.25 lb (0.57 kg) 6,510 grains (422 grams)
Influent Challenge Level
10 +/- 10% mg/L
226/228: 25 pCi/L
Middle Capacity/Salt Maximum Capacity/Salt
28,775 grains/8 lb 35,000 grains/15lb
28,180 grains/7 lb 40,000 grains/13lb
INSTALLATION GUIDE
2

SPECIFICATIONS

Specification
Maximum Capacity -
grains
Maximum Compen-
sated Hardness - gpg
(mg/L)
Maximum Ferrous
Iron Reduction -
ppm5,6
Minimum pH -
standard units
Maximum Chlorine
- ppm
Water & Ambient
Temperature Mini-
mum-Maximum - °F
(°C)
Water Pressure
Minimum - Maximum
- psi (bar)
Maximum Flow Rate
to Drain During
Regeneration gpm
(L/min)
Minimum Water
Flow for Backwash
gpm (L/min)
Service Flow Rate
(@15 psi (1.0 bar))
drop - gpm (L/min)
High Efficiency Salt
Setting - lb/grains
removed (kg/grams
removed)
High Efficiency Salt
Setting - Total Length
of Regeneration -
min/gal (min/L)
High Capacity Salt
Setting - lb/grains
removed (kg/grams
removed)
AO-WH- AO-WH-
SOFT-350 SOFT-400T
35,000 Grain 40,000 Grain
Capacity Capacity
Water Water
Softener Softener
35,000 40,000
90 100
10 10
7 7
0 0
40/120 (4/49) 40/120 (4/49)
20/120 20/120
(1.4/8.3) (1.4/8.3)
2 (7.6) 2 (7.6)
2 (7.6) 2 (7.6)
7.5 8
3/13500 5/21600
(1.4/875) (2.3/1400)
27.5/21
35/26 (35/98)
(27.5/80)
7/26300 9/33600
(3.2/1700) (4.1/2170)
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