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Specications STO-100 STO-150 STO-200 STO-250 STO-300
7 Series Downow 18101128-1 18101146-1 NA NA NA
Salt Used - Per Regeneration 6.0 lbs 9.0 lbs 12.0 lbs 15.0 lbs 18.0 lbs
Water Used - Regeneration 86.4 gal 148 gal 162.4 gal 216.0 gal 224.8 gal
Hardness Removal - Grains P7 - 22,000 P7 - 33,000 P7 - 44,000 P7 - 55,000 P7 - 66,000
Tank #1 Carbon Quantity (ft3) 1.0 ft 1.50 ft 2.0 ft 2.5 ft 3.0 ft
Tank #2 Resin Quantity (ft3) 1.0 ft 1.50 ft 2.0 ft 2.5 ft 3.0 ft
Tank Size 9x48 10x54 12x52 13x54 14x65
Tank Jacket / Media Loaded P7 - No P7 - No No No No
BrineTank (Inches) 15.0x34.7 15.0x34.7 20.3 x 37.4 20.3 x 37.4 23.0 x 40.5
Salt Storage Capacity 240 lbs 240 lbs 350 lbs 350 lbs 420 lbs
Flow Rate @ 15 psi Pressure Drop 7.2 gpm 7.4 gpm 9.0 gpm 9.2 gpm 9.2 gpm
Flow Rate @ 25 psi Pressure Drop 10.0 gpm 10.1 gpm 11.9 gpm 12.1 gpm 12.1 gpm
BackWash Flow Rate 2.4 gpm 3.5 gpm 4.0 gpm 4.5 gpm 5.0 gpm
ShippingWeight 154 lbs 171 lbs 214 lbs 225 lbs 232 lbs
RegenerationType P7 - Downow
Plumbing Connections 3/4” 90 degree elbows and 1”straight connectors
ResinType Aquane 8% cation exchange resin
CarbonType Aquane Catalytic Carbon
Electrical Requirements Input 120V 60 Hz - Output 12V 650mA
WaterTemperature Min 39 - Max. 100° F
Water Pressure Min. 20 - Max. 125 psi
SPECIFICATION
Working Temperature:This unit must be
operated at temperatures between 40°F and
110°F (4°C - 43°C).
Working Pressure:This water softener
must be operated on pressures
between 30 psi to 125 psi. If the water
pressure is higher than 125 PSI, use a
pressure reducing valve in the water supply
line to the softener.
Voltage = 120V / 60 Hz
Pipe Size = 3/4” and 1”
• At the stated service flow rates, the
pressure drop through these devices will
not exceed 15 psig.
• The manufacturer reserves the right
to make product improvements which
may deviate from the specifications
and descriptions stated herein, without
obligation to change previously
manufactured products or to note the
change.
* Do not use water that is microbiologically
unsafe without adequate disinfection
before or after the system.
Peak flow rates intended for intermittent
use only (10 minutes or less) and are for
residential applications only. Do not use
peak flow rate for commercial applications
or for a continuous rate when treated
water supplies are geothermal heat pump,
swimming pool, etc.
For satisfactory operation, the pumping rate
of the well system must equal or exceed
indicated backwash flow rate.
All units come with plastic bypass
Maximum Iron = 1.5 ppm
Maximum Hydrogen Sulde = 0.0 ppm
Maximum Manganese = .75 ppm
pH = 6.5 to 8.5
All units are factory programmed to the below specifications. Alteration should only be done by a factory trained technician or after consultation with one of our technical
representatives if you have any questions please call 877-288-9888.
PERFORMANCE DATA SHEET
Model Number P7STO-100 P7STO-150 P7STO-200 P7STO-300
Qty High Capacity Resin 1.0 ft3 1.5 ft3 2.0 ft3 3.0 ft3
Rated Service Flow (gpm) 11.0 11.2 12.4 12.9
Pressure Drop at Rated Service Flow (psi) 15.0 15.0 15.0 15.0
Rated Softening Capacity (grains) 13,269 @ 3lbs 20,443 @4.5lbs 27,258 @6lbs 40,887 @9lbs
Eciency (grains/lb salt) 4,543 4,543 4,543 4,543
Max. Flow Rate to Drain (gpm) 2.0 2.4 3.5 5.0
Working Pressure Min. 20 - Max. 125 psi
OperatingTemperature 40°F and 110°F (4°C - 43°C)
These softeners conform to NSF/ANSI 44 for the specific performance claims as verified and substantiated by test data.These models are efficiency rated.The efficiency rating is valid only at the stated salt dose and
maximum service flow rate.They 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 their
operation.These softeners have a rated softener efficiency of not less than 3350 grains of total hardness exchange per pound of salt (based on sodium chloride) and shall not deliver more salt than their listed ratings.The
rated salt efficiency is measured bylaboratory tests described in NSF/ANSI Standard 44.These tests represent the maximum possible efficiency that the systems can achieve. Operational efficiency is the actual efficiency
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 contaminants that reduce the softener’s capacity.These
systems are not intended for use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system. For best results, use plain, white block salt. Refer to Installation/
operation manual and warranty for further details on installation, parts and service, maintenance and further restrictions or limitations to the use of the product.
EFFICIENCY STATEMENT