Owner's manual

Feed Water Chemistry Requirements
pH 6.5 to 8.5
Hardness (maximum) 75 grains (1282 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 < 2ppm
Iron (maximum) 0.3 mg/l
Manganese (maximum) 0.05 mg/l
Copper < 0.1 mg/l
Oil & H2S None allowed
Polyphosphate None allowed
Silica (maximum) 10 ppm
*Note: These systems prevent hardness related scale for-
mation inside the plumbing system of the home at influent
hardness levels of 75 grains per gallon of calcium carbon-
ate and less. Due to variances in water chemistry certain
aesthetic conditions external of the plumbing system may
not be attained. Water known to have heavy loads of dirt
and debris should be prefiltered. Recommended PWFIL-
SED-BB-10-20M-PMT PWHSG-AST-BB-10-1-PR. Copper
lines need to be passivized for a minimum of 4 weeks
before placing unit into service. Not for use on closed loop
systems.
ES-OFRES 1206 © 2012 Watts
USA: Tel: [phone] • Fax: [phone] • www.watts.com
Canada: Tel: [phone] • Fax: [phone] • www.wattscanada.ca
A Watts Water Technologies Company
Dimensions - Weights
Model CoNNeCTIoN MINeRAl TANK MedIA MAXIMUM SeRVICe PReSSURe FlooR SPACe
SIZe SIZe lITeRS FloW (GPM)* dRoP (PSI)** (l X W X H)
OFRES-0835 1" MNPT 8" X 35" 2
8 <15
13" X 9" X 40"
OFRES-0935 1" MNPT 9" X 35"
3 12 <15
13.5" X 10" X 40"
OFRES-1035 1" MNPT 10" X 35" 4
16 <15
14" X 11" X 40"
*Exceeding maximum flow can reduce effectiveness and void warranty.
**Pressure drop at maximum service flow rate.
PART No. TANK IN oUT oVeRAll HeIGHT oVeRAll dePTH SHIPPING WeIGHT
(A&B) (e) (e) (C) (d) lbs. kgs.
OFRES-0835 8" x 35" 37" 37" 40" 12" 19 9
OFRES-0935 9" x 35" 37" 37" 40" 12.5" 23 10
OFRES-1035 10" x 35" 37" 37" 40" 13" 25 11
A
B
d
e
C
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.
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.
Note: Maximum service flow rate is for intermittent use only
and is not to be interpreted as continuous service flow rate
capability. These systems are designed to treat the domes-
tic water used in a single family dwelling. For higher volume
applications please contact your Watts representative.
Replacement Media
OFRES-0835RM Media should be replaced every 3 years
OFRES-0935RM Media should be replaced every 3 years
OFRES-1035RM Media should be replaced every 3 years