Watts OF140-4 User Manual

For Commercial and Food Service Applications

ES-OF110_120_140

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 OF110-1, OF120-2 and OF140-4

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
scale formation on internal and external plumbing surfaces.
The OneFlow
may be installed on a cold water line prior to a water-using
device (water heater, hot-beverage system, appliance, steamer
etc.) that requires protection from the ill effects of hard water.

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 pipes, water
heaters, boilers and on fixtures are no longer a concern.

OneFlow
It is a scale prevention device with proven third party labo­ratory test data and years of successful Food Service and
Commercial applications. OneFlow
tion and is a great alternative to water softening (ion exchange)
or scale sequestering devices.

®

Anti-Scale System provides protection from

®

system is a single cartridge-based system that

®

prevents scale by transforming dissolved hardness

®

is not a water softener. It does not add chemicals.

®

is the intelligent scale solu-

OF110-1

OF120-2

OF140-4

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

• 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

• 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

that are linked to good health

• OneFlow

change the cartridge once per year

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.

®

an effective alternative technology to a water

®

does not remove the essential minerals in water

®

cartridge-based systems are easily maintained;

Models

Model Maximum Flow Rate Connection sizes

OF110 – 1 1 gpm (4 lpm)

OF120 – 2 2 gpm (8 lpm)

OF140 – 4 4 gpm (15 lpm)

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

* 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.

1

⁄2” (15mm) FNPT

1

⁄2” (15mm) FNPT

3

⁄4” (20mm) FNPT

Specifications

A OneFlow® scale prevention system shall be installed on the
cold water service line to condition 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
also be installed to protect multiple pieces of equipment from
the ill-effects of hard water scale 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 housing to allow the bypass of untreated
water in the event that service or cartridge replacement be nec-

essary. 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.

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.

®

system may

C

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 < 3 ppm

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.

Dimensions — Weights

Model Dimensions Weight

A B C D E

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

1

OF110-1 14
OF120-2 24
OF140-4 26 66 7

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

⁄2 37 41⁄2 11 51⁄8 13 65⁄8 17 21⁄2 6 5 2.3

1

⁄2 62 41⁄2 11 51⁄8 13 65⁄8 17 21⁄2 6 8 3.6

3

⁄4 20 85⁄8 22 913⁄16 25 53⁄4 15 18 8.2

D

B

E

A

A Watts Water Technologies Company

ES-OF110_120_140 1140 © 2011 Watts

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

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