Watts CWS300H User Manual

For Commercial Applications

ES-WQ-CWS300H

Job Name

Job Location

Engineer

Approval

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Contractor

Approval

Contractor’s P.O. No.

Representative

Series CWS300H

Commercial Water Softening Systems

Connection Size: 3" (80 mm)
Flow Rates: Up to 251 gpm (950 lpm)

Watts CWS300H water softening systems are highly efficient
cation exchange type water softeners. They are suitable for com­mercial applications ranging from 60,000 to 600,000 grains of
hardness removal and flow rates up to 251 gallons per minute.
Regeneration is meter demand initiated. All cycles of regeneration
are fully automatic and do not require manual actuation.

Watts CWS300H 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, sterilizer
make up water, washing, and process water are all common appli­cations for the Watts CWS300H 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 prepara-tion
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

• Third party tested 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 lead free brass bodied control valve for years of service

• Input for remote signal regeneration initiation

• WQA Certified high capacity resin

• Highly corrosion resistant NSF Certified fiberglass tanks

• Durable polypropylene lower distribution system

Standards

Control Valve- Third party tested 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

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Series CWS300H

Specifications

A Watts CWS300H 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 installation 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 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 25psi or exceed 125psi. Water tem-

perature must not fall below 34°F or exceed 110°F (1 - 43°C). The

system shall provide softened water measuring less than one grain
per gallon of hardness as Calcium Carbonate when operated within
the resin manufacturer’s operational specifications.

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

unknown quality without adequate disinfection before or after the
system.

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

Dimensions - Weight

For all other guideline information please contact your Watts
representative.

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

unknown quality without adequate disinfection before or after the
system.

CWS300H SERIES

OVERALL OVERALL OVERALL
MODEL TANK IN OUT HEIGHT DEPTH WIDTH BRINE TANK

M4610WH 24"X72" 85.3" 85.3" 93.0" 24.1" 32.3" 30"X50"
M4612WH 30"X72" 86.8" 86.8" 94.2" 30.1" 35.3" 39"X48"
M4614WH 36"X72" 91.0" 91.0" 98.5" 36.1" 38.3" 39"X48"
M4616WH 42"X72" 99.0" 99.0" 106.5" 44.0" 44.0" 42"X60"
M4618WH 48"X72" 99.8" 99.8" 107.2" 50.3" 50.3" 50"X60"

Specifications

MINERAL TANK BRINE TANK SOfTENING LBS. SALT PER fLOW RATE & PRESSURE
TANK RESIN GRAVEL TANK SALT CAPACITY REGENERATION SERV DROP BKW
MODEL SIZE ft

3

SIZE fILL MAx MIN MAx MIN GPM PSI GPM

M4610WH 24x72 10 200 lbs. 30x50 1400 300 K 200 K 150 60 98/126 15/25 15
M4612WH 30x72 15 400 lbs. 39x48 2200 450 K 300 K 225 90 144/186 15/25 25
M4614WH 36x72 20 500 lbs. 39x60 2700 600 K 400 K 300 120 172/222 15/25 35
M4616WH 42x72 30 700 lbs. 42x60 3100 900 K 600 K 450 180 190/244 15/25 45
M4618WH 48x72 35 900 lbs. 50x60 4500 1050K 700 K 525 210 194/251 15/25 60

Note: Capacities are based on resin manufacturer’s data and are dependent upon influent water TDS, temperature, bed depth, and
flow rates. Feed water must be free of oil and color. Pipe size, tank size, and space requirements are in inches. Capacities and flow rates
expressed above are per tank. Flow rates listed at 25psi drops are for intermittent peak flow rates and are not to be used as continuous flows.

Note: Flow rates listed above are based on pressure drop only. Selecting a system based on pressure drop alone does not guarantee that

the system will proved adequately softened water. System selection should be based on resin quantity, capacity required, feed water analy­sis, and application requirements.

Ordering Information

MODEL DESCRIPTION SPACE REQUIRED WEIGHT
LBS KGS

M4610WH A0300FM300WH with turbine meter 39 x 69 x 103 1070 486
M4612WH A0450FM300WH with turbine meter 39 x 75 x 107 1600 727
M4614WH A0600FM300WH with turbine meter 39 x 81 x 109 2015 916
M4616WH A0900FM300WH with turbine meter 42 x 90 x 117 3245 1425
M4618WH A1050FM300WH with turbine meter 50 x104x 117 4295 1946

Note: This information is not intended to replace the product installation and safety information available or the experience of a trained prod­uct installer. Please refer to the product installation and safety instructions for further information.

A Watts Water Technologies Company

ES-WQ-CWS300H 1306 © 2013 Watts

USA: Tel. [phone] • www.watts.com

Canada: Tel. [phone] • www.watts.ca