Water chemistry & limitations, System specifications, Standards – Watts OFTWH User Manual
Page 2: Dimensions — weights
Water Chemistry & Limitations
PH
6.5 to 8.5
Hardness (maximum)
75 grains (1300 ppm CaCO3)
Temperature
41°F to 100°F (5° to 40°C)
Chlorine
< 3 ppm
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
System Specifications
Maximum Pressure: 90psi/620.1 kPa
Maximum Temperature: 100°F/38°C
Min.: 35°F/2°C
Inlet/Outlet Connections:
3
/
4
" FNPT
Service Flow Rate: 0.5 gpm to 10 gpm (1.9 Ipm to 38 Ipm)
Gallon Rating: OFTWH: up to 6 gpm, 24/7/365 for 2 years
for the OFTWHRM.
Capacity: OFTWHRM cartridge does not have a grain removal
capacity, however, other contaminants present in the water will
gradually degrade the effectiveness of this cartridge. Change
the OFTWHRM cartridge at least once every two years.
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.
Dimensions — Weights
Model
Dimensions
Weight
A
B
C
D
E
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
lbs.
kgs
OFTWH
26
66
7
3
⁄
4
20
8
5
⁄
8
23
9
13
⁄
16
25
5
3
⁄
4
15
19
8.6
The overall height and the height of the inlet fitting varies due to material variations and assembly
tolerances. Please allow additional clearance above the filter for making connections.
Max Pressure: 90psi
Max Temperature: 100ºF
Wall
2'- 8" Min.
— 5'- 0" A.F
.F.
Installation Height
1'- 9
7
/
8
"
3
1
/
2
"
2
7
/
8
"
to inlet
3" Min.
Remo
val
Clearance
Water treatment unit
must be installed on the
cold water supply only
Mounted to secure wall
on studs or wall panel –
Do not mount to unsupported
sheet-rock or gypsum board.
3
/
4
" Full flow
ball valve inlet
connection to
water supply
C
Max Pressure: 90psi
Max Temperature: 100ºF
3
1
/
2
"
2
13
/
16
"
1
1
/
4
"
1'
3" Min.
Remo
val
Clearance
Water filtration unit
must be installed on the
cold water supply only
Mounted to
secure wall
on studs or
wall panel –
Do not mount
to unsupported
sheet-rock or
gypsum board.
3
/
4
" FPT outlet
connection to
equipment
3
/
4
" Full flow
ball valve w/
3
/
4
"
FPT inlet connection
from building
water supply
D
B
E
E
ES-OFTWH 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