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INSTALLATION GUIDE
2
19
18
EFFICIENCY STATEMENTS
SPECIFICATIONS
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
AO-WH-SOFT-
450T
5,210 grains/lb (742 grams/kg)
1.25 lb (0.57 kg)
6,510 grains (422 grams)
AO-WH-SOFT-
PRO-300
5,210 grains/lb (742 grams/kg)
1 lb (0.45 kg)
5,210 grains (338 grams)
AO-WH-SOFT-
PRO-500
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
AO-WH-SOFT-
450T
6,510 grains/1.25lb
35,960 grains/10 lb
45,000 grains/18.75lb
AO-WH-SOFT-
PRO-300
5,210 grains/1lb
20,360 grains/5 lb
30,000 grains/9lb
AO-WH-SOFT-
PRO-500
8,650 grains/1.66lb
33,410 grains/8lb
50,000 grains/15lb
AO-WH-
SOFT-450T
AO-WH-
SOFT-
PRO-300
AO-WH-
SOFT-
PRO-500
Specification
45,000 Grain
Capacity
Water
Softener
30,000 Grain
Capacity
Water
Softener For
City Water
50,000 Grain
Capacity
Water
Softener
Maximum Capacity -
grains
45,000
30,000
50,000
Maximum Compen-
sated Hardness - gpg
(mg/L)
100
90
110
Maximum Ferrous
Iron Reduction -
ppm5,6
10
0
10
Minimum pH -
standard units
7
7
7
Maximum Chlorine
- ppm
0
3
0
Water & Ambient
Temperature Mini-
mum-Maximum - °F
(°C)
40/120 (4/49)
40/120 (4/49)
40/120 (4/49)
Water Pressure
Minimum - Maximum
- psi (bar)
20/120
(1.4/8.3)
20/120
(1.4/8.3)
20/120
(1.4/8.3)
Maximum Flow Rate
to Drain During
Regeneration gpm
(L/min)
2 (7.6)
2 (7.6)
2.4 (9.1)
Minimum Water
Flow for Backwash
gpm (L/min)
2 (7.6)
2 (7.6)
2.4 (9.1)
Service Flow Rate
(@15 psi (1.0 bar))
drop - gpm (L/min)
8
9.1
7
High Efficiency Salt
Setting - lb/grains
removed (kg/grams
removed)
5/21600
(2.3/1400)
3/13400
(1.4/868)
6/26400
(2.7/1710)
High Efficiency Salt
Setting - Total Length
of Regeneration -
min/gal (min/L)
35/26 (35/98)
27.5/21
(27.5/80)
42.5/30
(42.5/114)
High Capacity Salt
Setting - lb/grains
removed (kg/grams
removed)
9/33600
(4.1/2170)
7/26000
(3.2/1685)
10/39500
(4.5/2560)
