Watts OFTWH-RES - Manual

For Residential Applications
ES-OFTWH-RES
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval ––––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
Connection Sizes: 3 ⁄
4
" (20mm)
Flow Rates: From 0.5 gpm to 6 gpm (1.9 lpm to 38 lpm)
The OneFlow
® Anti-Scale System provides protection from
scale formation on internal and external plumbing surfaces.
The OneFlow ® system is a single cartridge-based system
that must be installed on a cold water line prior to a single
water heating device (water heater or tankless water heater).
OneFlow
® uses template assisted crystallization (T.A.C.) to
attract hardness minerals and convert them into harmless,
inactive microscopic crystal particles.
These crystals stay suspended in the water and are passed
to drain. The system requires very little maintenance, no back-
washing, no salt and no electricity. Typical hardness problems,
especially build-up of scale in heating elements, pipes, water
heaters, boilers and on fixtures are no longer a concern.
OneFlow
® is not a water softener. It does not add chemicals. It
is a scale prevention device with proven third party laboratory
test data and years of successful commercial, residential and
foodservice applications. OneFlow ® is the intelligent scale solu-
tion and is a great alternative to water softening (ion exchange)
or scale sequestering devices.
Features
• Chemical-free scale prevention and protection - converts hard-
ness minerals to harmless, inactive microscopic crystals mak-
ing OneFlow ® an effective alternative to ion exchange water
softeners
• 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 heating devices and
downstream plumbing components
• Simple sizing & installation – standard 3 /
4
" connections
• Perfect system for homes where equipment protection
is desired for longer equipment life and reduced energy
consumption
• Inlet ball valve for easy isolation shutoff and filter changes
• OneFlow
® cartridge-based systems are easily maintained;
change the cartridge once every two years
• Easily installed mounting bracket included w/filter wrench
to allow cartridge change-outs when necessary
Model OFTWH-RES
OneFlow
®
Anti-Scale System
Models
Model Peak Flow Rate Connection Size
OFTWH-RES 6 gpm (38 lpm) 3 ⁄
4
" (20mm) FNPT
Replacement Cartridge
OFTWHRM-RES Cartridge should be replaced every 2 YEARS.
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 ® system
may 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 replace-
ment be necessary. Bypass is recommended but not required.
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 wastewater
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 passivated for a minimum
of 4 weeks before placing unit into service. Not for use on
closed loop systems.
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 with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
OFTWH-RES
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
For hot water applications where untreated feed water temperature
is 110°F - 150°F (43°C - 66°C), please consult ES-OneFlow-HotWater.
LEAD FREE
*