Watts OneFlow OF817-8H Manuel D'installation, D'utilisation Et D'entretien page 2

Specifications
A OneFlow scale prevention system for hot water shall be
installed on the hot water feed line just prior to the equipment it
is intended to protect. The temperature of the feed water should
consistently range between 100°F - 140°F (38°C - 60°C) as all
of the components are designed to work in this elevated tem-
perature condition. The OneFlow system shall effectively reduce
water hardness scale concerns thereby protecting heat-transfer
and other surfaces from the negative effects of scale. The
system shall be furnished with a factory supplied bypass valve
to allow isolation of tank(s) and to allow the bypass of untreated
hot water in the event that service or media replacement be
necessary. The installation area should be suitable in size for the
tank(s) to be serviced without encumbrance and allow the tank
to sit upright on a flat level surface.
The system must operate in an upflow manner and does not
require additional water to backwash, flush, or regenerate once
put into service. The system does not require any chemical
additives and does not require electricity for operation.
NOTICE
Not for use on closed loop systems.
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.
CAUTION
!
• Not for use on closed loop systems.
• Must be used on hot water. This system is not designed for cold
(<100°F) water. For cold water operation contact your Watts
Representative for a system designed for cold water operation.
• Do not let the system freeze. Damage to the tank may result.
• System must be operated in a vertical position. Do not lay it
down during operation. The system may be placed in any
position for shipping and installation but must be operated in
the vertical position.
• Place the system on a smooth, level surface. Because the sys-
tem operates in an upflow, fluidized bed mode, having a level
surface is more important than with a softener or media filter.
• A bypass valve should be installed on every system to facilitate
installation and service.
• Observe all local plumbing and building codes when installing
the system.
WARNING
!
Using OneFlow with Other Water Treatment
Equipment
Due to the unique properties of OneFlow, there are some unique
requirements for using OneFlow in conjunction with filtration or
other forms of water treatment.
1. OneFlow must be the last stage in the treatment chain.
Do not install any filters after OneFlow or before any devices for
which scale prevention is required. POU filters, e.g. carbon, RO
or Ultraviolet (UV) are exempt from this requirement.
2. Do not apply any other antiscalant before or after OneFlow.
3. The addition of soaps, chemicals, or cleaners, before or after
OneFlow treatment, may reverse its anti-scale treatment effects
and/or create water with a heavy residue or spotting potential.
Any adverse conditions caused by the addition of soaps, chemi-
cals, or cleaners are the sole responsibility of the end user.
4. OneFlow is not a water softener and does not soften the
water – Water treatment chemistry (e.g. antiscalants, seques-
trants, soaps, chemicals or cleaners etc...) will most likely have
to be changed to be compatible with OneFlow treated water.
Laundry and ware-washing chemistry will likewise require
adjustments.
NOTICE
Spotting May Occur on External
Plumbing Surfaces
OneFlow media systems perform best in single pass potable water
applications with NO additional chemical additives. Depending on
hardness, soft scale spotting may occur. Soft scale spots in most
cases can be easily wiped down with a damp cloth and will not
®
form hard scale deposits. A Point of Use (POU) Water Softener
should be used on mandatory spot-free applications (e.g. glass
stemware, dishware).
Hot Water System Overview
Figure 1.
2
Tank Head
Bypass Valve
(Shown in Bypass Position)
Media Tank
IN - Hot Water
(100°F-140°F)
OUT - OneFlow
Treated Water