Equipment Specifications; Feed Water Chemistry Requirements; Mechanical Specifications; Dimensions - Watts OneFlow OF817-8H Manuel D'installation, D'utilisation Et D'entretien

Equipment Specifications

OneFlow systems are complete, self-contained, loaded with media
and ready to use. A simple inlet and outlet connection is all that is
required for installation. Please review operating pressures, tempera-
tures and water chemistry limitations to ensure compatibility.

Feed Water Chemistry Requirements

pH
Hardness (maximum)
Water Pressure
Temperature
Free Chlorine
Iron (maximum)
Manganese (maximum)
Copper (maximum)
Oil & H2S
Total Phosphates
Silica (maximum)
TDS
NOTICE
* Systems using OneFlow technology are effective at controlling
lime-scale formation inside the plumbing system at influent hard-
ness levels up to 75 grains per gallon (1282 ppm) as calcium
carbonate. Due to variances in water chemistry, 30 grains per
gallon is a recommended hardness maximum due to potential
aesthetic issues related to soft scale residue formation outside
of the plumbing system. Testing should be performed to deter-
mine proper application where hardness levels exceed 30 grains
per gallon.
** Just as with conventional water softening media, OneFlow media
needs to be protected from excess levels of certain metals that
can easily coat the active surface, reducing its effectiveness over
time. Public water supplies rarely, if ever, present a problem, but
if the water supply is from a private well, confirm that the levels
of iron (Fe) and manganese (Mn) are less than 0.3 mg/L and 0.05
mg/L, respectively.
WARNING
!
*** Pursuant to the EPA drinking water standards, the copper
concentration permitted is up to 1.3 ppm. Typically originating
from new copper plumbing, high levels of copper can foul
OneFlow media. New Copper lines need to be passivated for
a minumum of 4 weeks before placing unit into service. For
applications with copper concentration greater than 1.3 ppm,
please consult Watts Water Quality Technical Service.
To further minimize any problem with excess copper, avoid
applying excessive flux on the inner surfaces of the pipe
and use a low-corrosivity water soluble flux listed under the
ASTM B813 standard.
NOTICE
OneFlow media does not reduce silica scaling. While silica tends
†
to have a less significant effect on scale formation than other
minerals, it can act as a binder that makes water spots and scale
residue outside the plumbing system difficult to remove. This 20
ppm limitation is for aesthetic purposes.
All other contaminants must meet the requirements of the
††
USEPA Safe Drinking Water Act. Specific Mineral and Metal MCL's,
identified in Watts published Feed Water Chemistry Requirements,
supersedes the USEPA SDWA.
Water known to have heavy loads of dirt and debris may require
pre-filtration prior to OneFlow
6.5-8.5
30 grains (513 ppm CaCO3)*
15 psi to 100 psi (1.03 bar to 6.9 bar)
100° F to 140° F (38°C to 60°C)
<2 ppm
0.3 ppm**
0.05 ppm**
1.3 ppm***
Must be Removed Prior to OneFlow
< 3.0 ppm
20 ppm
†
<1500 mg/L ††
.
®

Mechanical Specifications

Model
Inlet/Outlet Connections
Maximum Flow Rate
Dry Weight (lbs/kgs)
Service Weight (lbs/kgs)
Replacement Media
Model Replacement Frequency
OF817-8HRM Media must be replaced every 3 years
OF817-12HRM Media must be replaced every 3 years
OF1019-20HRM Media must be replaced every 3 years
G (clearance)
A
C

Dimensions

Model
A
in. mm
OF817-8H 20 508
OF817-12H 20 508
OF1019-20H 22 559
E F
in. mm in. mm
11 279 2 51
11 279 2 51
13 330 2 51
NOTICE
Anytime OneFlow systems are installed above the ground floor of
a building it is recommended that a vacuum relief valve also be
installed to protect against tank collapse in the event the plumbing
system is drained. If a vacuum relief valve is not used then the
system should be placed in bypass anytime the plumbing system
is drained. The EDP code for the suggested vacuum relief valve is
0556031 (not included). The vacuum relief valve should be installed
on the outlet of the system.
3
OF817-8H OF817-12H OF1019-20H
1" FNPT 1" FNPT
8 gpm 12 gpm
15 lbs./ 16 lbs./
6.8 kgs. 7.3 kgs. 11.8 kgs.
37 lbs./ 38 lbs./
16.8 kgs. 17.3 kgs. 27.3 kgs.
D
E
B
Dimensions
B C
in. mm in. mm in.
18 ⁄ 472 8 ⁄ 216 1
5 1
8 2
18 ⁄ 472 8 ⁄ 216 1
5 1
8 2
20 ⁄ 523 10 ⁄ 267 1
5 1
8 2
Weight
G
in. mm lbs. kgs
6 152 15 6.8
6 152 16 7.3
6 152 26 11.8
1" FNPT
20 gpm
26 lbs./
60 lbs/
F
D
mm
⁄ 36
3
8
⁄ 36
3
8
⁄ 36
3
8