Watts OFTWH-RES - Manual (Page 2)

Water Chemistry & Limitations
pH 6.5 to 8.5
Hardness (maximum) 75 grains (1300 ppm CaCO3)
Temperature 35°F to 100°F (1.6° 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/6.2 bar
Maximum Temperature: 100°F/38°C
Minimum Temperature: 35°F/2°C
Inlet/Outlet Connections:
3 /
4
" FNPT
Service Flow Rate (Peak): up to 6 gpm (38 lpm)
Gallon Rating (Continuous Flow Rate):
OFTWH-RES: up to 4 gpm, 24/7/365 for 2 years for the
OFTWHRM-RES cartridge.
Capacity: OFTWHRM-RES 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-RES 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 assess 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-RES 28 1 ⁄
2
724 4 1 ⁄
2
114 8 5 ⁄
8
219 10 254 3 76 15 6.8
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.
Wall
4 1 ⁄
2
"
5"
to inlet
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
ES-OFTWH-RES 1303 © 2013 Watts
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
A Watts Water Technologies Company
23 1 ⁄
2
"
3" Min. Removal Clearance
32" Min to 60" A.F.F.
Installation Height
1"
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
" Full flow
ball valve w/ 3 ⁄
4
"
FNPT inlet connection
from building
water supply
D
B
E
A
6 1 ⁄
2
"
3" Min. Removal Clearance
5"