Watts OF240-4 User Manual

For Commercial and Food Service Applications

ES-OF210_220_240

Job Name

Job Location

Engineer

Approval

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LEAD FREE

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Contractor

Approval

Contractor’s P.O. No.

Representative

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Models OF210-1, OF220-2 and OF240-4

OneFlow® Anti-Scale System

Connection Sizes: 1⁄2" and 3⁄4" (15 and 20mm)

Flow Rates: From 0.5 gpm to 4 gpm (1.9 lpm to 15.2 lpm)

The OneFlow
vides protection from scale formation and reduces chlorine and
other off tastes to improve overall water quality in Food Service
applications. The OneFlow
system that may be installed on a cold water line prior to a
water-using device (coffee maker, espresso machine, post-mix
system or other appliance) that requires protection from the ill
effects of hard water. OneFlow
the water is being heated or brought to steam.

OneFlow
minerals into harmless, inactive microscopic crystal particles.
These crystals stay suspended in the water and are passed to
drain, thereby having a greatly reduced ability to react nega­tively like dissolved hardness does. The system requires very
little maintenance, no backwashing, no salt, and no electricity.
Typical hardness problems, especially build-up of scale in heat­ing elements, boilers, and steamers, are no longer a concern.

OneFlow
or remove any minerals. It is a scale prevention device with
proven third party laboratory test data and years of successful
Food Service and Commercial applications. OneFlow
intelligent scale solution with chlorine reduction as a great alter­native to water softening (ion exchange) or scale sequestering
devices.

®

Anti-Scale System with two filter housings pro-

®

system is a dual cartridge-based

®

works exceptionally well where

®

prevents scale by transforming dissolved hardness

®

is not a water softener. It does not add chemicals

®

is the

OF210-1

OF220-2

Features

• Chemical free scale prevention and protection - converts

hardness minerals to harmless, inactive microscopic crystals
making OneFlow
softener for the prevention of scale due to water hardness and
for the reduction of chlorine for better taste and odor

• Virtually maintenance free - No salt bags or other chemicals to

constantly add or maintain

• No control valve, no electricity and no wastewater

• Uses environmentally friendly “green” technology

• Improves efficiency of all water appliances whether heating the

water or not

• Simple sizing & installation – all you need to know is pipe size

and flow rate

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.

®

effective alternative technology to a water

• Perfect system for restaurants, cafeterias and coffee shops

where multiple or single equipment protection is desired for
longer equipment life and reduced energy consumption

• Inlet ball valve for easy isolation shutoff and filter changes

• OneFlow

are linked to good health

• OneFlow

change the carbon cartridge every 6 months and the
OneFlow

* The wetted surface of this product contacted by consumable

water contains less than one quarter of one percent (0.25%) of
lead by weight.

For hot water applications where water temperature is
110°F - 150°F (43°C - 66°C), please consult ES-OneFlow-Hot Water.

®

does not remove the essential minerals in water that

®

cartridge-based systems are easily maintained;

®

media cartridge once per year.

OF240-4

Models

Model Maximum Flow Rate Connection Sizes

OF210 – 1 1 gpm (4 lpm)

OF220 – 2 2 gpm (8 lpm)

OF240 – 4 4 gpm (15 lpm)

1

⁄2” (15mm) FNPT

1

⁄2” (15mm) FNPT

3

⁄4” (20mm) FNPT

Replacement Cartridge

OF110RM Cartridge should be replaced every 12 months

OF120RM Cartridge should be replaced every 12 months

OF140RM Cartridge should be replaced every 12 months

OF110RC Cartridge should be replaced every 6 months

OF120RC Cartridge should be replaced every 6 months

OF140RC Cartridge should be replaced every 6 months

Specifications

A OneFlow® scale prevention system with added carbon filtra­tion shall be installed on the cold water service line to condition
and filter the tap water just prior to the service line feeding the

equipment it is designed to protect. The system will be sized

for maximum or peak flow rate based on the specification of
said equipment. A OneFlow
tion may also be installed to protect multiple pieces of equip­ment from the ill-effects of hard water scale and taste/odor
concerns provided the aggregate peak flow rate for each piece
of equipment it is protecting has been considered. The system
shall be plumbed with a bypass valve to allow isolation of filter
housings to allow the bypass of untreated water in the event
that service or cartridge replacement is necessary. The instal­lation area should be suitable in size for the housing to be ser­viced without encumbrance and the system should be installed
per the Installation, Operation & Maintenance manual as pro­vided with each system.

The OneFlow

®

system must not require additional waste water
to backwash, flush, or regenerate once put into service. The
system shall not require any chemical additives and shall not
require electricity for operation.

®

system with added carbon filtra-

Water Chemistry & Limitations

pH 6.5 to 8.5
Hardness (maximum) 75 grains (1300 ppm CaCO3)
Temperature 41°F to 100°F (5° to 38°C)

Chlorine < 3ppm
Iron (maximum) 0.3 mg/l

Manganese (maximum) 0.05 mg/l

Copper none allowed

Oil & H2S none allowed

Polyphosphate none allowed
Silica (maximum) 10 ppm

Standards

Independent scientific testing has confirmed Template Assisted

Crystallization (TAC) technology provides scale reduction of over
95+%. Testing was conducted under protocol based on DVGW
W512 test to access control of scale formation.

C

A

D

B

E

A

Note: Copper lines need to be passivized for a minimum
of 4 weeks before placing unit into service. Not for use on
closed loop systems.

Dimensions — Weights

Clearance

Model Dimensions Weight

A B C* D E*

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

1

OF210-1 14
OF220-2 24
OF240-4 26 66 15

⁄2 37 91⁄4 24 51⁄8 13 111⁄4 29 53⁄4 15 9 4.1

1

⁄2 62 91⁄4 24 51⁄8 13 111⁄4 29 53⁄4 15 14 6.4

1

⁄4 39 85⁄8 22 175⁄16 44 121⁄4 31 31 14.1

The overall height and the height of the fitting varies due to material variations and assembly
tolerances. Please allow additional clearances above the tank for making connections.

A Watts Water Technologies Company

ES-OF210_220_240 1140 © 2011 Watts

USA: No. Andover, MA • Tel: [phone] • Fax: [phone] • www.watts.com

Canada: Burlington, ON • Tel: [phone] • Fax: [phone] • www.wattscanada.ca