Watts PWS30-2 User Manual
For Commercial Applications
ES-WQ-PWS30_S30-2
Job Name
Job Location
Engineer
Approval
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Series PWS30 and
Series PWS30-2
Commercial Water Softening
Systems
Connection Size: 3" (80 mm)
Flow Rates: Up to 280 gpm (1059 lpm)
Watts Pure Water Series PWS30 and PWS30-2 water softening systems are high efficient conventional cation exchange
type water softeners. They are suitable for commercial applications ranging from 300,000 to 1,050,000 grains of hardness
removal per tank and flow rates up to 280 gallons per minute
(1059 lpm). Where continuous softened water is required
PWS30-2 duplex alternating systems can be specified for uninterrupted service. Regeneration is meter demand initiated. All
cycles of regeneration are fully automatic and do not require
manual actuation.
Watts Pure Water Series PWS30 and PWS30-2 water softeners are designed for point of use or point of entry applications
where the benefits of softened water are required. 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 PWS30 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
• 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 PWS30 Series PWS30-2
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 PWS30 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 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 - 43°C).
The system shall provide softened water measuring less than
one grain per gallon of hardness as Calcium Carbonate when
operated within the manufacturers 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 - Weight
E
E
D
D
Note: Do not use with water that is microbiologically unsafe or
of unknown quality without adequate disinfection before or after
the system.
PWS30-2 SeriesPWS30 Series
E
E
D
D
F
F
C
C
FRONT
FRONT
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
B
B
G
G
SIDE
SIDE
C
C
A
A
F
F
FRONT
FRONT
B
B
G
G
SIDE
SIDE
PWS30151H11 797/16 2017 797/16 2017 951/4 2419 241/2 622 241/2 622 30 762 50 1270 1070 486
PWS30151I11
PWS30151J11 87
PWS30151K11 95
PWS30151L11 99
PWS30151H21 79
PWS30151I21
PWS30151J21 87
PWS30151K21 95
PWS30151L21 99
817/16 2068 817/16 2068 963/4 2457 301/8 765 301/8 765 39 991 48 1219 1600 727
1
/4 2216 871/4 2216 101 2565 361/8 917 361/8 917 39 991 60 1524 2015 916
1
/4 2419 951/4 2419 108 2743 44 1118 44 1118 42 1067 60 1524 3245 1475
5
/8 2530 995/8 2530 1123/8 2854 503/8 1280 503/8 1280 50 1270 60 1524 4295 941
7
/16 2017 797/16 2017 951/4 2419 241/2 622 85 2159 30 762 50 1270 2070 941
817/16 2068 817/16 2068 963/4 2457 301/8 765 100 2540 39 991 48 1219 3000 1364
1
/4 2216 871/4 2216 101 2565 361/8 917 111 2819 39 991 60 1524 4015 1325
1
/4 2419 951/4 2419 108 2743 44 1118 126 3200 42 1067 60 1524 6245 2839
5
/8 2530 995/8 2530 1123/8 2854 503/8 1280 150 3810 50 1270 60 1524 8295 3770
A
A
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