Watts PWR4022 User Manual

For Commercial Applications

ES-WQ-PWR4022

Job Name

Job Location

Engineer

Approval

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Series PWR4022

Commercial Reverse Osmosis Systems

Flow Rate: Up to 15 gpm (56 lpm)

Watts Pure Water Series PWR4022 reverse osmosis (RO) systems are commercial grade high-pressure RO units for the reduction of total dissolved solids from water. They are designed to supply reverse osmosis quality water with production rates ranging from 10 to 15 gallons per minute (56 lpm). These units are designed for floor mount installations. Reverse osmosis is a process where high-pressure feed water is fed into a semi-permeable membrane. In the membrane, pure water is allowed to pass through the membrane material and exit as purified permeate water. Dissolved mineral salts are not allowed to pass through the membrane and become a concentrated reject stream that is sent to a drain. These RO systems use high pressure/high-rejection membranes to achieve a minimum average NaCl ionic rejection of 97 percent.

Watts Pure Water Series PWR4022 RO systems are a well designed, rugged line of purifiers. This series comes with a preselected assortment of features, including our digital controller for monitoring and operation. Corrosion resistant fiberglass reinforced plastic (FRP) membrane housings, inlet and outlet pre-filter pressure gauges, low-pressure switch with delayed auto restart, inputs for tank level and pretreatment interlock, conductivity meter, high conductivity alarm output, adjustable reject recycle, permeate and reject water flow meters, reject recycle flow meter, permeate water check valve, inlet solenoid valve, membrane feed and reject water pressure gauges, auto flush, and adjustable reject valve are all standard features. These systems are designed to feed an atmospheric storage tank for collection of the reverse osmosis water. Reverse osmosis water has a wide variety of applications including municipal water treatment, steam boiler and steam sterilizer make up, laboratory use, spot free rinsing, ice and beverage water, water for cooking, food processing, metal plating and finishing, as well as water for humidification. Reverse osmosis is also the pretreatment of choice for ion exchange type deionization (DI) systems. Using RO water as make up to a DI system reduces the exhaustion rate of the DI resin by up to 95 percent saving time, money, and chemicals associated with DI resin regeneration.

Note: Do not use with water that is microbiologically unsafe or

of unknown quality without adequate disinfection before or after the system.

Contractor

Approval

Contractor’s P.O. No.

Representative

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PURE WATER

Series PWR4022

Features

• Membrane Auto Flush

• Powder coated carbon steel support frame

• Corrosion resistant 300psi FRP high-pressure membrane

housings

• Pressure gauges for pre-filter inlet/outlet, membrane feed,

and reject water pressure

• Low feed water pressure safety switch

• Digital microprocessor based controller with delayed auto

restart after low pressure shut down

• Permeate water conductivity meter with high conductivity

alarm output

• Tank level and pretreatment interlock inputs

• High-pressure/high-rejection membranes with 97% minimum

average salt rejection

• Permeate, reject recycle, and reject water flow meters

• Adjustable reject and reject recycle valves

• Permeate check valve

• Automatic inlet solenoid valve

• 20" high flow pre-filter

Standards

Pre-filter Housing- NSF/ANSI Certified Std. 42 Membrane Housings- NSF/ANSI Certified Std. 61

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.

Specifications

FRONT SIDE

Watts Pure Water Series PWR4022 reverse osmosis system shall be installed to provide reverse osmosis quality water. The RO system shall be installed after a Series PWS water softener so that scale forming calcium and magnesium hardness cannot scale the RO membranes. Series PWC backwashing carbon filter shall be installed on the RO feed water line to remove chlorine and prevent membrane degradation due to chlorine attack.

Series PWM backwashing sediment filter shall also be installed

on the RO feed water line to reduce the silt density index of the water to prevent particulate fouling of the RO membranes.

The RO system shall be a high-pressure/high-rejection type unit complete with permeate and reject water flow meters, reject recycle water flow meter, pre-filter inlet and outlet pressure gauges, membrane feed and reject water pressure gauges, FRP membrane housings, automatic inlet solenoid valve, low feed water pressure switch, reject and recycle valves, digital controller with conductivity meter and high-conductivity alarm output, storage tank level and pretreatment interlock inputs, 7.5 horse power multistage centrifugal high pressure pump, and all other components necessary for proper operation. The system shall be a floor mount design. The RO permeate water shall be collected in an atmospheric storage tank with the tank level controlled by an electronic level float. The RO shall be equipped with inputs for the tank level float as well as pretreatment interlock to shut the RO system down in the event the pretreatment begins a backwash cycle. Electrical

requirements are 230 volt 60 hertz three phase. A local drain is

required to accept drain water from the system. The feed water pressure must not fall below 20psi. The feed water tempera-

ture must not fall below 35°F or exceed 100°F (2 - 38°C).

The system shall produce reverse osmosis quality water with 97 percent minimum average ionic rejection of total dissolved solids when operated within the manufacturer’s operational specifications.

Feed Water Guidelines

pH ........................ 6 to 9

Hardness (maximum) .......... Less than 1 grain per gal-

lon as CaCO3 (Softened)

or anti scale chemical injection if not softened (contact your Watts representative)

Feed Water Pressure (minimum) .. 20psi

Temperature ................. 35 - 100°F (2 - 38°C)

Free Chlorine (maximum)........ None Allowed

Iron (maximum) ............... Less than .1mg/L

Oil and H2S ................. None Allowed

Turbidity .................... Less than 1.0 NTU

Silt Density Index ............. Less than 5.0 SDI

Notes: * For all other guideline information please contact your Watts representative.

* Published maximum production rates are based on a feed water of 77°F,

SDI of less than 3, 1000 ppm TDS, and pH 8. Individual membrane productivity may vary (± 15%). May be operated on other feed waters with reduced capacity.

* Percent rejection is based on membrane manufacturer’s specifications;

overall system percent rejection may be less.

Dimensions - Weights

FRONT

MODEL NO. DIMENSIONS WEIGHTS

A B C

in. mm in. mm in. mm lbs. kg

PWR40223083 24 610 68 1727 94 2388 800 364 PWR40223103 24 610 68 1727 94 2388 900 409 PWR40223123 24 610 68 1727 94 2388 1000 455

SIDE

Performance

Maximum Productivity (gallons per minute) 10 12.5 15

Quality (typical membrane percent rejection) 98 %

Recovery (adjustable) 60 - 75 %

Membrane Size 4" x 40"

Membrane Array (two elements per vessel) 2:1:1 2:2:1 3:2:1

Prefilter (system ships with one 5 micron cartridge) 20" Big Blue

Feed Water Connection 1" FNPT

Product Water Connection 1" FNPT

Reject Water Connection

Feed Water Required (GPM at 65% recovery) 17 21 25

Minimum Feed Water Pressure 20 psig

Drain Required (maximum) 17 21 25

Electrical Requirement (other voltages available) 230 VAC, 3-phase, 60 Hz, 20 amps

Motor Horse Power / Type 7.5 / TEFC

Dimensions L x W x H (approximate) 96" x 24" x 72"

Shipping Weight (estimated pounds) 800 900 1000

⁄4" FNPT

Ordering Information

Model No. Description

PWR40223083 10 GPM Reverse Osmosis System with Micro Processor Control

and Auto Flush

PWR40223103 12.5 GPM Reverse Osmosis System with Micro Processor

Control and Auto Flush

PWR40223123 15 GPM Reverse Osmosis System with Micro Processor Control

and Auto Flush

A Watts Water Technologies Company

USA: North Andover, MA • Tel. (800) 224-1299 • www.watts.com

Canada: Burlington, ON • Tel. (888) 208-8927 • www.wattscanada.ca