5
OFTWH_OFTWH-R_IT_IOM_UK_02_21_Rev1
Watts Water Technologies, Inc.
UK
The descriptions and photographs contained in this product specification sheet are supplied by way of information only and are not binding. Watts Industries reserves the right to carry out
any technical and design improvements to its products without prior notice. Warranty: All sales and contracts for sale are expressly conditioned on the buyer’s assent to Watts terms and
conditions found on its website at www.wattswater.eu. Watts hereby objects to any term, different from or additional to Watts terms, contained in any buyer communication in any form,
unless agreed to in a writing signed by an officer of Watts.
•
Do NOT solder plumbing connections attached to filter
housing will be damaged by high temperature.
•
Do NOT overtighten fitting connections into housing outlet.
•
Always back-up valves and fittings with a wrench when
installing a fitting to avoid turning the valve.
•
Position the OneFlow unit in a suitable location.
•
ALLOW a minimum of 8 to 10 cm under the housing to
allow for filter replacement.
•
Do NOT install the unit behind equipment where it may be
difficult to access the system for filter replacement.
•
If water hammer is evident, install water hammer arrestors
before the OneFlow unit.
WARNING!
Installation with copper (Cu)
*** We do not recommend to install OneFlow
®
with new cop-
per pipes or devices. Excessive copper levels can foul the
OneFlow
®
media. If NEW copper lines or devices had been
installed, they need to be passivated for a minimum of 4 weeks
before placing the device into service.
WARNING!
Closed systems/still water
Avoid use in closed circuits (eg hydronic systems) and low
flow installations or standing water (max. 72 to 120 hours,
depending on the quality of the incoming water).
•
Do not apply any other antiscalants before or after OneFlow
®
.
•
You are required to consult the local building and plumbing
codes prior to installation. If the information in this manual
is not consistent with local building or plumbing codes,
the local codes should be followed. Inquire with governing
authorities for additional local requirements.
•
Need for periodic inspection and yearly maintenance:
Periodic inspection and yearly maintenance by a licensed
contractor is required. Corrosive water conditions and/or
unauthorized adjustments or repair could render the device
ineffective for service intended. Regular checking and clean-
ing of the devices internal components and check stops
helps assure maximum life and proper product function.
Frequency of cleaning and inspection depends upon local
water conditions.
3.2 Installation instructions
1. Close the water system. Turn off all equipment to be fed by
the OneFlow
®
System.
2. Determine if the water line has an existing water treatment
system. If so, examine system for use of polyphosphate or
other scale inhibitors. OneFlow
®
will not be effective if used
in conjunction with other scale inhibitors. Remove the scale
inhibitors from the water line or discontinue installation.
www.watts-oneflow.com/register
4. Operation
With sufficient pressure, operation of the Watts OneFlow
®
System is completely automatic. Dependable operation involves
only periodic cartridge changes and service documentation.
3. Drill the wall and insert the dowels. Screw the bracket tightly to
the wall. The system must be vertical and upright.
4. Remove the OneFlow
®
housing shell from the housing cap and
make sure that the O-ring is correctly in place. When attaching
the shell back to the cap, make certain the O-ring is properly
positioned.
5. Connect OneFlow
®
by using PTFE tape. Use two to three
wraps of PTFE tape on the fitting connection.
6. Run a suitable line from the
3
/
4
” full-flow ball valve at the
tap water source to the inlet ball valve on the left side of the
OneFlow
®
system. Use 2-3 wraps of PTFE tape and brace the
inlet ball valve on the system with a wrench when connecting
7. Select the appropriate size tubing for the equipment being
fed and connect it to the outlet of the OneFlow
®
System.
NOTE:
DO NOT connect the tubing to the equipment at this
time. Prior to making connection to the equipment, this line
will be used to facilitate flushing the system. As an option,
a drain valve in a tee on the outlet side of the OneFlow
®
system could be provided in the line to facilitate flushing when
changing cartridges.
8. With OneFlow
®
inlet valve closed, slowly open the
3
/
4
” full-flow
ball valve at the tap water source. Check for leaks.
9. If a drain valve was not installed on the outlet side of the
system, hold the tubing that will connect to equipment in a
clean bucket or over sink or drain. Open the system inlet feed
valve and allow water to flush through system for 2 minutes at
the specified system flow rate to allow air bubbles to escape.
NOTE:
NO ACTIVATION IS REQUIRED FOR THE OneFlow
®
SYSTEM TO PERFORM PROPERLY. FLUSHING IS
RECOMMENDED TO ALLOW AIR TO ESCAPE THE SYSTEM.
10. Make certain that the end of the tubing to be connected
to the equipment is clean and sanitary.
11. Connect tubing to equipment. Open all water supply valves
and check for leaks.
12. If no leaks, turn on equipment and check for normal operation.
13. Register the OneFlow
®
system to ensure proper operation.
