Models, Connection options, Replacement media – Watts OF948-16 User Manual
Page 2: Specifications, Dimensions feed water chemistry requirements, Standards, Peak flow rates — weights
Models
Model
Maximum
Connection Sizes
Flow Rate
OF744-10
10 gpm (38 lpm)
3
⁄
4
", 1" or 1
1
⁄
4
" (19, 25, 32mm)
OF844-12
12 gpm (45.4 lpm)
3
⁄
4
", 1" or 1
1
⁄
4
" (19, 25, 32mm)
OF948-16
16 gpm (60.8 lpm)
3
⁄
4
", 1" or 1
1
⁄
4
" (19, 25, 32mm)
OF1054-20
20 gpm (76 lpm)
3
⁄
4
", 1" or 1
1
⁄
4
" (19, 25, 32mm)
OF1252-30
30 gpm (114 lpm)
3
⁄
4
", 1" or 1
1
⁄
4
" (19, 25, 32mm)
Connection Options
3
⁄
4
" and 1" Sweat (19 and 25mm)
1" and 1
1
⁄
4
" Plastic MPT (25 and 32mm)
Replacement Media
OF744RM
Media should be replaced every 3 years
OF844RM
Media should be replaced every 3 years
OF948RM
Media should be replaced every 3 years
OF1054RM
Media should be replaced every 3 years
OF1252RM
Media should be replaced every 3 years
Specifications
A OneFlow
®
scale prevention system shall be installed on the
main water service pipe just after it enters the building, but after
other whole building water safety devices (backflow preventers
or pressure reducing valves), to effectively address water hard-
ness concerns. A system may also be installed further down-
stream to protect specific equipment or areas within a plumbing
system. The system shall be plumbed with a bypass valve to
allow isolation of tank(s) and to allow the bypass of untreated
water usage 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 sit upright
on a flat level surface.
The system must not require additional wastewater to back-
wash, 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.
Dimensions
Feed Water Chemistry Requirements
pH
6.5 to 8.5
Hardness (maximum)
75 grains (1300 ppm CaCO3)
Water Pressure
15psi to 100psi (103 kPa to 6.9 bar)
Temperature
40°F to 110°F (5°C to 43°C)*
Chlorine
< 3ppm
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
Note: Water known to have heavy loads of dirt and debris
may require pre-filtration prior to OneFlow.
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.
A
B
C
E
D
Peak Flow Rates — Weights
OF744
OF844
OF948
OF1054
OF1252
*Maximum Flow
10 gpm
37.8 lpm
12 gpm
45.4 lpm
16 gpm
60.6 lpm
20 gpm
75.7 lpm
30 gpm
113.6 lpm
Dry Weight
22 lbs.
10.0 kgs.
25 lbs.
11.3 kgs.
29 lbs.
13.2 kgs.
35 lbs.
15.9 kgs.
43 lbs.
19.5 kgs.
Service Weight
80 lbs.
36.3 kgs.
97 lbs.
44.0 kgs.
129 lbs.
58.5 kgs.
168 lbs.
76.2 kgs.
235 lbs.
106.6 kgs.
*Exceeding maximum flow can reduce effectiveness and void warranty.
Model
Dimensions
A
B
C
D
E
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
OF744-10
48
1
⁄
2
1232
46
1168
7
178
2
1
⁄
2
64
3
76
OF844-12
48
1
⁄
2
1232
46
1168
8
203
2
1
⁄
2
64
3
76
OF948-16
52
1
⁄
2
1334
48
1219
9
229
2
1
⁄
2
64
3
76
OF1054-20
59
1
⁄
2
1511
57
1448
10
254
2
1
⁄
2
64
3
76
OF1252-30
56
1
⁄
2
1435
54
1372
12
305
2
1
⁄
2
64
3
76
The overall height and the height of the fitting varies due to material variations and assembly tolerances.
Please allow additional clearances above the tank for making connections.
ES-OF744_844_948_1054_1252 1140
© 2011 Watts
USA: No. Andover, MA • Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Burlington, ON • Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.wattscanada.ca
A Watts Water Technologies Company