Specifications, Feed water guidelines, Dimensions - weights – Watts PWR2511 User Manual

Page 2

Specifications

Watts Pure Water Series PWR2511 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 membrane(s). 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

membrane(s).
The RO system shall be a high-pressure/high-rejection type

unit complete with permeate and reject water flow meters, pre-

filter inlet/outlet and membrane feed water pressure gauges,

316L stainless steel membrane housings, automatic inlet sole-

noid valve, low feed water pressure switch, permeate water

pressure switch, reject and recycle valves, auto flush feature,

micro electronic controller, high-pressure pump, and all other

components necessary for proper operation. The system shall

be a wall mount design with an optional leg kit for floor mount

installations. The RO permeate water shall be collected in an

atmospheric storage tank or a pressurized bladder tank. A per-

meate water pressure switch is provided on the RO system for

automatic on/off operation when using a pressurized bladder

tank. Electrical requirements 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 20psi. The feed water tem-

perature must not fall below 35°F or exceed 100°F (2 - 38°C).
The system shall produce reverse osmosis quality water with

95 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 gallon 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.

Dimensions - Weights

FRONT

SIDE

MODEl NO.

DIMENSIONS

WEIghTS

A B C

in. mm in. mm in. mm lbs. kgs.

PWR25111011 9 229 30 762 21 533 50 23

PWR25112011 9 229 32 813 21 533 50 23

PWR25113011 9 229 51 1295 21 533 60 27

PWR25113021 9 229 51 1295 21 533 70 32