Watts PWS10T3-4CUFT User Manual
For Commercial Applications
ES-WQ-PWS10T
Job Name
Job Location
Engineer
Approval
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Series PWS10T
Commercial Water Softening
Systems
Connection Size: 1" (25mm)
Flow Rates: Up to 25 gpm (94 lpm)
Watts Pure Water Series PWS10T water softening systems are
highly efficient, twin alternating, conventional cation exchange
type water softeners. They are designed to supply continuous
softened water without interruption.
Series PWS10T water softeners are suitable for commercial
applications ranging from 30,000 to 120,000 grains of hardness removal per tank and flow rates up to 25 gallons per minute (94 lpm). Regeneration is meter demand initiated. All cycles
of regeneration are fully automatic and do not require manual
actuation.
Watts Pure Water Series PWS10T water softeners are
designed for point-of-use or point-of-entry applications where
the benefits of softened water are required and water demand
is round the clock. These systems exchange scale-forming calcium and magnesium ions with non scale-forming sodium ions
to create soft water for a variety of applications. Steam boiler
make up water, water heater pretreatment, reverse osmosis
pretreatment, cooling tower make up water, sterilizer make up
water, washing, and process water are all common applications for the Watts Pure Water Series PWS10T water softeners.
Softened water provides a wide variety of benefits from not
introducing scale into pipes, valves, water heating equipment,
heat exchangers, and cooling towers to reducing mineral build
up in areas that see excessive splashing such as food preparation counters and sink areas. Softened water also conserves
soaps and cleaning agents by eliminating the formation of soap
curd, so your cleaners can work on cleaning – not reacting
with the hardness in your water.
Features
• Twin alternating design for continuous softened water
• WQA Certified fully automatic metered demand control valve
• Sophisticated digital electronic controls that store operating
history that can be accessed by the user
• Fully adjustable regeneration cycles
• Durable brass bodied control valve for years of service
• Dry contact lock out switch for remote interface is standard
• WQA Certified high capacity resin
• Highly corrosion resistant NSF Certified fiberglass tanks
• Durable polypropylene lower distribution system
Contractor
Approval
Contractor’s P.O. No.
Representative
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PURE WATER
Series PWS10T
Twin Alternating
Standards
Control Valve- WQA Certified to NSF/ANSI Std. 61
Ion Exchange Resin- WQA Certified to NSF/ANSI Std.44
Mineral Tank -NSF Certified to ANSI Std. 44 or 61
Specifications
A Watts Pure Water Series PWS10T water softening system
shall be installed on the building’s main water line just after
it enters the building. The installation point shall be after any
backflow prevention or pressure regulating valves. Other instal-
lation options are to install a system just before the water
heater or other types of equipment needing the protection of
softened water. In installations where the dedicated cold water
make up to a water heater is the installation point, a backflow
preventer and a thermal expansion tank must be installed as
well. The system shall be installed with a bypass valve to allow
for the shut down and removal of the unit without interrupting
the water supply to the building.
The water softener shall be a down flow regenerated, metered
demand, sodium cycle cation exchange type system with all
components necessary for proper operation. Electrical require-
ments are 120 volt 60 hertz. A local drain is required to accept
drain water from the system. The feed water pressure must not
fall below 25psi or exceed 125psi. Water temperature must not
fall below 34°F or exceed 110°F (1°C to 43°C).
The system shall provide softened water measuring less than
one grain per gallon of hardness as Calcium Carbonate when
operated within the manufacturer’s operational specifications.
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Feed Water Guidelines
pH ....................... 6 to 10
Hardness (maximum) ......... Depends on customers acceptable
hardness leakage level.
Water Pressure .............. 25psi to 125psi (171 kPa to 8.5 bar)
Temperature ................ 34 - 110°F (1 - 43°C)
Free Chlorine (maximum) ...... 1mg/L
Iron (maximum) .............. 1mg/L
Oil and H2S ................ None Allowed
Turbidity ................... Less than 5.0 NTU
For all other guideline information please contact your Watts
representative.
Dimensions - Weights
Note: Do not use with water that is microbiologically unsafe or
of unknown quality without adequate disinfection before or after
the system.
E
F
C
A
G
BACK SIDE
MODEL NO. DIMENSIONS WEIGHTS
A B C D E F G
in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs.
D
B
PWS10T161A21 50 1270 50 1270 55 1397 12 305 273/8 695 18 457 40 1016 230 105
1
PWS10T161B21 56
PWS10T161C21 54
PWS10T161D21 67
PWS10T161E21 66
/8 1425 561/8 1425 611/8 1552 121/2 318 277/8 708 18 457 40 1016 290 132
1
/2 1384 541/2 1384 591/2 1511 131/2 343 291/2 749 18 457 40 1016 350 159
3
/8 1711 673/8 1711 721/4 1835 145/8 371 311/2 800 18 457 40 1016 500 227
5
/8 1692 665/8 1692 715/8 1819 161/8 409 331/8 841 18 457 40 1016 650 295
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