Specifications & Performance Claims - North Star NST30ED Installation And Operation Manual

Specifications & Performance Claims
These models are efficiency rated. The efficiency rating is valid only at the minimum salt dose. The softeners have
a demand initiated regeneration (D.I.R.) feature that complies with specific performance specifications intended to
minimize the amount of regenerant brine and water used in its operation.
These softeners have a rated softener efficiency of not less than 3,350 grains of total hardness exchange per pound
of salt (based on sodium chloride) and shall not deliver more salt than its listed rating or be operated at a sustained
maximum service flow rate greater than their listed rating. These softeners have been proven to deliver soft water
for at least ten continuous minutes at the rated service flow rate. The rated salt efficiency is measured by laboratory
tests described in NSF/ANSI Standard 44. These tests represent the maximum possible efficiency that the system
can achieve. Operational efficiency is the actual efficiency after the system has been installed. It is typically less
than the rated efficiency, due to individual application factors including water hardness, water usage, and other con-
taminants that reduce a softener's capacity.
Model
Model Code
Rated Softening Capacity (Grains @ Salt Dose)
Rated Efficiency
(Grains/Pound of Salt @ Minimum Salt Dose)
Water Used During Regeneration @ Minimum
Salt Dose
Total Water Used Per Regeneration @ Maximum
Salt Dose
Rated Service Flow Rate
Amount of High Capacity Ion Exchange Resin
Pressure Drop at Rated Service Flow
Intermittent Flow rate @ 15 psi*
Water Supply Max. Hardness
Water Supply Max. Clear Water Iron
Water Pressure Limits (minimum / maximum)
Water Temperature Limits (minimum / maximum)
Minimum Water Supply Flow Rate
Maximum Drain Flow Rate
*
Intermittent flow rate does not represent the maximum service flow rate used for determining the softeners' rated
capacity and efficiency. Continuous operation at flow rates greater than the service flow rate may affect capacity
and efficiency performance.
**
Capacity to reduce clear water iron is substantiated by laboratory test data. State of Wisconsin requires addi-
tional treatment if water supply contains clear water iron exceeding 5 ppm.
***Canada working pressure limits: 1.4 - 7.0 kg/cm
These systems conform to NSF/ANSI 44 for the specific performance claims as verified and substantiated by
test data.
Variable Salt Dose: The salt dose is selected by the electronic controls at regeneration time based on the amount
needed.
NST30ED
SR30
11,800 2.3 lbs. 13,300
@
25,300 7.4 lbs. 35,700
@
30,200 12.5 lbs. 45,300
@
5,090 2.3 lbs. 5,070
@
3.2 gal. /
1,000 grains
39.5 gallons
7.3 gpm
0.78 cu. ft.
15.0 psig
7.3 gpm
90 gpg
8 ppm**
2.0 gpm
.
2
3
NST45ED1 NST70ED1
SR45
2.6 lbs. 20,800
@
9.9 lbs. 55,100
@
17.2 lbs. 70,000
@
2.6 lbs. 5,080
@
4.1 gal. /
1,000 grains 1,000 grains
56.0 gallons 101 gallons
10.0 gpm 13.5 gpm
1.26 cu. ft. 1.94 cu. ft.
11.2 psig 15.0 psig
12.1 gpm 13.5 gpm
120 gpg
12 ppm** 19 ppm**
20 - 125 psi***
40 - 120 °F
3 gpm
2.0 gpm
SR70
4.1 lbs.
@
15.2 lbs.
@
26.4 lbs.
@
4.1 lbs.
@
4.3 gal. /
120 gpg
3.0 gpm