Rain Soft EC4 50 V User manual

Part No.: 15929
Rev: C
09/06
For use in California
RainSoft Division of Aquion Water Treatment Products
2080 East Lunt Avenue
Elk Grove Village, Illinois 60007
1.847.437.9400 or 1.800.860.7638
www.rainsoft.com
EC4 SERIES
WATER TREATMENT SYSTEM

2
Table of Contents
Information on Water Treatment Systems ................................................ 3
Application Limitations ................................................................................ 3
Operational Specifications ...................................................................... 4_6
Salt Requirements.......................................................................................... 7
Resin Cleaners................................................................................................ 7
Maintenance Requirements.......................................................................... 7
Product Certification Information.............................................................. 7
Installation Instructions ........................................................................ 8_11
System Start Up............................................................................................ 12
Customer Settings ................................................................................ 13_14
How to Initiate a Manual Regeneration .................................................. 14
System Alarms ............................................................................................ 15
Understanding the Information Center .................................................. 15
Troubleshooting Guide .............................................................................. 16
Warranty Information ................................................................................ 17
Exploded Views and Parts Lists.......................................................... 18_21
California Performance Data Sheets.................................................. 22–31

3
Congratulations on your purchase of a RainSoft water treatment
system.
This Owner’s Manual is designed to assist with the operation, mainte-
nance, and installation of your water treatment system. It is our sincere
hope that this manual is clear, concise, and helpful to you as a new
owner.
Questions? If you have any questions regarding the installation, oper-
ation, or servicing of this system, please contact your local RainSoft
Dealer. Your local RainSoft Dealer is familiar with your particular
water conditions, and is able to address your concerns promptly and
efficiently.
Information on Water Treatment
Systems
There are many misconceptions that have been developed about water
treatment systems. The most common topic of confusion is the
amount of sodium (Na), not table salt (NaCl), that is added to the
water from a water conditioner. In reality, ion exchange does replace
the hardness ions in your water with sodium ions, but the common
misconception is the amount used.
For every 1 grain of hardness, the exchange process will deliver
approximately 8 milligrams of sodium per 1 liter of water. The amount
of sodium present in a standard 8 ounce glass of treated water, that was
10 grains hard prior to treatment, would be around 19 milligrams of
sodium. This is an insignificant amount of sodium considering a
typical slice of white bread has about 140 milligrams.
Another common misconception that needs mentioning is the
amount of salt used by the conditioner to regenerate the system. In the
past, water conditioners used more salt to regenerate, but that was due
to old technology and standards. Water conditioners do use salt for
regeneration, but the amount of salt varies by water consumption and
hardness levels. Fortunately, today’s technology allows us to dispense
just the right amount of salt for maximum efficiency, based on your
individual water consumption needs.
Application Limitations
• On hardness levels of 60 grains and higher, the system may not
achieve a hardness of less than 1 grain; due to high Total Dissolved
Solids, some bleed through is possible. Bleed through can also be
caused by sodium levels higher than 1000 parts per million. In either
case, your system can be programmed to minimize these effects. See
your RainSoft Dealer for details.
• Chlorine or Chloramine levels on municipality treated water should
not exceed 4 parts per million.*When Chlorine or Chloramine levels
are 4 parts per million*or greater, it can have adverse effects on your
system. In applications where high levels are a concern, pre-filtration
is necessary to reduce the Chlorine or Chloramine to an acceptable
level. See your RainSoft Dealer for details.
• When this system is installed on water with Ferrous iron, also known
as clear water iron, the maximum range of removal is based on local
water conditions. The range is generally 2 to 10 parts per million.
Your equipment may require special programming, along with an
additive to the brine tank, to maximize the equipment’s ability to
remove iron. See your RainSoft Dealer for details.
!
Important Note: Oxidizing agents,
such as Chlorine or Chloramine in
excess of 4 ppm, and/or Ferrous
iron will foul the resin bed. Fouled
resin is not eligible for warranty
replacement.
!
Important Note: This system may
be in-stalled on well water or
municipality treated water
supplies.
!
Important Note: Most municipality
treated water supplies contain
Chlorine as a disinfectant. Many
municipalities also inject ammonia
into the water supply, creating
Chloramine.
Maximum disinfectant level of
Chlorine or Chloramine recom-
mended from the EPA.
*
Helpful Tip: Another common
misconception of water treatment
systems is the idea that soft water
will produce clear ice cubes.
Cloudy or white, hazy ice cubes
are caused by air that is slowly
being released from the water
during the freezing process, which
has nothing to do with the perform-
ance of your system.

4
Operational Specifications
Plumbing
3/4 inch to 1 1/4 inch
Drain Line
1/2 inch
Water Pressure
20 psi_120 psi (1.38 bar _6.89 bar)
Operating Temperatures
40° F_100° F (4.4° C _37.8° C)
Electrical Requirements
A properly grounded alternating current supply (110 VAC 60 Hz or 230
VAC 50 Hz) is required for the operation of this system. Please check the
transformer for the correct voltage requirements.
Bypass Valve
The bypass valve enables you to bypass the system in situations of: emer-
gency leaks in the equipment, service calls and/or outdoor water use.
Existing Plumbing Conditions
Plumbing should be free from lime and/or iron buildup. Piping that
contains large amounts of lime and/or iron should be replaced. If piping
is clogged with iron, a separate iron filter should be installed in-line,
before the water conditioner.
Additional Specifications
• Do not install this system where water is microbiologically unsafe or of
unknown quality without adequate disinfection before or after the
system.
• This system must be installed in accordance with all applicable state
and local laws and regulations.
• The Commonwealth of Massachusetts Plumbing Code 248 CMR shall
be adhered to. A liscence plumber shall be used for this installation.
• This system must be installed in an area not affected by extreme heat,
cold or the elements. The selected installation area must be adequate
for easy service and accessibility.
• This system is designed to treat cold water only. The installation must
be on a cold water supply.
Data Chart for ION-X 2000 V Resin
*Cation Exchange Media
** The conditioners are efficiency rated
according to NSF/ANSI 44. The effi-
ciency of the conditioner is valid
only at the stated salt dosage.
Higher or lower pressure will affect the effi-
ciency of the system.
*** Only the following models are
certified in the State of California: EC4 75 CV,
EC4 100 CV, EC4 150 CV, EC4-CAB 60 CV and
EC4-CAB 100 CV. All other models are not
certified in the State of California for the
purpose of making health claims.
!
Important Note: This system
requires the use of the supplied
transformer (24 VAC).
Model Tank Size
(inches)
Resin*
(cu. ft.)
Service
Flow
(gpm)
Drain
Flow
(gpm)
psi Drop High
Salting
Medium
Salting
Low
Salting Efficiency**
EC4 50 V 8 x 44 0.5 10.0 1.5 14.0 18,700 @
7.5 lbs.
16,000 @
5.0 lbs.
8,900 @
2.0 lbs.
4,470 @
2.0 lbs.
EC4 50 CV 8 x 44 0.5 10.0 1.5 14.0 18,700 @
7.5 lbs.
16,000 @
5.0 lbs.
8,900 @
2.0 lbs.
4,470 @
2.0 lbs.
EC4 60SS V 10 x 18 0.6 9.5 2.0 10.0 22,000 @
9.0 lbs.
18,700 @
6.0 lbs.
10,500 @
2.4 lbs.
4,370 @
2.4 lbs.
EC4 60SS CV 10 x 18 0.6 9.5 2.0 9.0 22,000 @
9.0 lbs.
18,700 @
6.0 lbs.
10,500 @
2.4 lbs.
4,370 @
2.4 lbs.
EC4 60S V 10 x 35 0.6 9.5 2.0 10.0 22,500 @
9.0 lbs.
19,200 @
6.0 lbs.
10,700 @
2.4 lbs.
4,470@
2.4 lbs.
EC4 60S CV 10 x 35 0.6 9.5 2.0 10.0 22,500 @
9.0 lbs.
19,200 @
6.0 lbs.
10,700 @
2.4 lbs.
4,470@
2.4 lbs.
!
Important Note: The manually
operated bypass valve enables
the conditioner to be isolated
from the water service line for
maintenance and service. It also
maintains the continuity of the
water supply when the condi-
tioner is disconnected.

Data Chart for ION-X 2000 V Resin
Data Chart for ION-X 100 T Resin
5
Model Tank Size
(inches)
Resin*
(cu. ft.)
Service
Flow
(gpm)
Drain
Flow
(gpm)
psi
Drop
High
Salting
Medium
Salting
Low
Salting Efficiency**
EC4 75 V 8 x 44 0.75 9.0 1.5 15.0 28,100 @
11.2 lbs.
24,000 @
7.5 lbs.
13,400 @
3.0 lbs.
4,470 @
3.0 lbs.
EC4 75 CV 8 x 44 0.75 9.3 1.5 15.0 28,100 @
11.2 lbs.
24,000 @
7.5 lbs.
13,400 @
3.0 lbs.
4,470 @
3.0 lbs.
EC4 100 V 10 x 44 1.0 10.0 2.0 13.0 37,700 @
15.0 lbs.
32,300 @
10.0 lbs.
14,900 @
3.0 lbs.
4,970 @
3.0 lbs.
EC4 100 CV 10 x 44 1.0 10.0 2.0 12.0 37,700 @
15.0 lbs.
32,300 @
10.0 lbs.
14,900 @
3.0 lbs.
4,970 @
3.0 lbs.
EC4 100S V 10 x 35 1.0 10.0 2.0 15.0 37,700 @
15.0 lbs.
32,300 @
10.0 lbs.
14,900 @
3.0 lbs.
4,970 @
3.0 lbs.
EC4 100S CV 10 x 35 1.0 10.0 2.0 12.0 37,700 @
15.0 lbs.
32,300 @
10.0 lbs.
14,900 @
3.0 lbs.
4,970 @
3.0 lbs.
EC4 150 V 10 x 54 1.5 9.0 2.0 15.0 56,600 @
22.5 lbs.
48,500 @
15.0 lbs.
22,400 @
4.5 lbs.
4,970 @
4.5 lbs.
EC4 150 CV 10 x 54 1.5 10.4 2.0 15.0 56,600 @
22.5 lbs.
48,500 @
15.0 lbs.
22,400 @
4.5 lbs.
4,970 @
4.5 lbs.
EC4 250 V 13 x 54 2.5 10.4 3.0 15.0 94,300 @
37.5 lbs.
80,900 @
25.0 lbs.
37,300 @
7.5 lbs.
4,970 @
7.5 lbs.
EC4 250 CV 13 x 54 2.5 10.5 3.0 13.0 94,300 @
37.5 lbs.
80,900 @
25.0 lbs.
37,300 @
7.5 lbs.
4,970 @
7.5 lbs.
EC4 400 V 14 x 65 4.0 10.0 4.0 15.0 141,800 @
60.0 lbs.
121,500 @
40.0 lbs.
56,000 @
12.0 lbs.
4,670 @
12.0 lbs.
EC4 400 CV 14 x 65 4.0 11.3 4.0 15.0 141,800 @
60.0 lbs.
121,500 @
40.0 lbs.
56,000 @
12.0 lbs.
4,670 @
12.0 lbs.
EC4-CAB 60SS V 10 x 18 0.6 9.5 2.0 10.0 22,000 @
9.0 lbs.
18,700 @
6.0 lbs.
10,500 @
2.4 lbs.
4,370 @
2.4 lbs.
EC4-CAB 60SS CV 10 x 18 0.6 9.5 2.0 9.0 22,000 @
9.0 lbs.
18,700 @
6.0 lbs.
10,500 @
2.4 lbs.
4,370 @
2.4 lbs.
EC4-CAB 60 V 10 x 35 0.6 9.5 2.0 10.0 22,500 @
9.0 lbs.
19,200 @
6.0 lbs.
10,700 @
2.4 lbs.
4,470 @
2.4 lbs.
EC4-CAB 60 CV 10 x 35 0.6 9.5 2.0 10.0 22,500 @
9.0 lbs.
19,200 @
6.0 lbs.
10,700 @
2.4 lbs.
4,470 @
2.4 lbs.
EC4-CAB 100 V 10 x 35 1.0 10.0 2.0 15.0 37,700 @
15.0 lbs.
32,300 @
10.0 lbs.
14,900 @
3.0 lbs.
4,970 @
3.0 lbs.
EC4-CAB 100 CV 10 x 35 1.0 10.0 2.0 12.0 37,700 @
15.0 lbs.
32,300 @
10.0 lbs.
14,900 @
3.0 lbs.
4,970 @
3.0 lbs.
Model Tank Size
(inches)
Resin*
(cu. ft.)
Service
Flow
(gpm)
Drain
Flow
(gpm)
psi
Drop
High
Salting
Medium
Salting
Low
Salting Efficiency**
EC4 50 T 8 x 44 0.5 10.0 1.5 12.0 12,600 @
7.5 lbs.
10,000 @
5.0 lbs.
5,800 @
2.0 lbs. n/a
EC4 50 CT 8 x 44 0.5 10.0 1.5 13.0 12,600 @
7.5 lbs.
10,000 @
5.0 lbs.
5,800 @
2.0 lbs. n/a
EC4 60SS T 10 x 18 0.6 10.0 2.0 9.0 13,900 @
9.0 lbs.
10,900 @
6.0 lbs.
6,300 @
2.4 lbs. n/a
EC4 60SS CT 10 x 18 0.6 10.0 2.0 9.0 13,900 @
9.0 lbs.
10,900 @
6.0 lbs.
6,300 @
2.4 lbs. n/a
EC4 60S T 10 x 35 0.6 10.0 2.0 10.0 15,000 @
9.0 lbs.
11,800 @
6.0 lbs.
6,800 @
2.4 lbs. n/a
EC4 60S CT 10 x 35 0.6 10.0 2.0 10.0 15,000 @
9.0 lbs.
11,800 @
6.0 lbs.
6,800 @
2.4 lbs. n/a
EC4 75 T 8 x 44 0.75 9.9 1.5 15.0 19,000 @
11.2 lbs.
14,900 @
7.5 lbs.
8,700 @
3.0 lbs. n/a
EC4 75 CT 8 x 44 0.75 10.0 1.5 15.0 19,000 @
11.2 lbs.
14,900 @
7.5 lbs.
8,700 @
3.0 lbs. n/a
EC4 100 T 10 x 44 1.0 10.0 2.0 13.0 25,800 @
15.0 lbs.
25,700 @
10.0 lbs.
12,200 @
3.0 lbs.
4,070 @
3.0 lbs.
EC4 100 CT 10 x 44 1.0 10.0 2.0 13.0 25,800 @
15.0 lbs.
25,700 @
10.0 lbs.
12,200 @
3.0 lbs.
4,070 @
3.0 lbs.
EC4 100S T 10 x 35 1.0 10.0 2.0 13.0 25,800 @
15.0 lbs.
25,700 @
10.0 lbs.
12,200 @
3.0 lbs.
4,070 @
3.0 lbs.
EC4 100S CT 10 x 35 1.0 10.0 2.0 13.0 25,800 @
15.0 lbs.
25,700 @
10.0 lbs.
12,200 @
3.0 lbs.
4,070 @
3.0 lbs.
EC4 150 T 10 x 54 1.5 9.6 2.0 15.0 38,700 @
22.5 lbs.
38,500 @
15.0 lbs.
18,300 @
4.5 lbs.
4,070 @
4.5 lbs.
EC4 150 CT 10 x 54 1.5 9.6 2.0 15.0 38,700 @
22.5 lbs.
38,500 @
15.0 lbs.
18,300 @
4.5 lbs.
4,070 @
4.5 lbs.
*Cation Exchange Media
** The conditioners are efficiency rated
according to NSF/ ANSI 44. The efficiency of
the conditioner is valid only at the stated salt
dosage.
Higher or lower pressure will affect the effi-
ciency of The system.
*** Only the following models are certi-
fied in the State of California: EC4 75 CV, EC4
100 CV, EC4 150 CV, EC4-CAB 60 CV and EC4-
CAB 100 CV. All other models are not certified in
the State of California for the purpose of making
health claims.
*Cation Exchange Media
** The conditioners are efficiency rated
according to NSF/ ANSI 44. The efficiency of
the conditioner is valid only at the stated salt
dosage.
Higher or lower pressure will affect the effi-
ciency of The system.
*** Only the following models are certi-
fied in the State of California: EC4 75 CV, EC4
100 CV, EC4 150 CV, EC4-CAB 60 CV and EC4-
CAB 100 CV. All other models are not certified in
the State of California for the purpose of making

Operational Specifications continued from page 5
Data Chart for ION-X 100 T Resin
Data Chart for ION-X 34 D Resin
6
Model Tank Size
(inches)
Resin*
(cu. ft.)
Service
Flow
(gpm)
Drain
Flow
(gpm)
psi Drop High
Salting
Medium
Salting
Low
Salting Efficiency**
EC4 250 T 13 x 54 2.5 11.4 3.0 15.0 64,500 @
37.5 lbs.
64,200 @
25.0 lbs.
30,500 @
7.5 lbs.
4,070 @
7.5 lbs.
EC4 250 CT 13 x 54 2.5 11.2 3.0 15.0 64,500 @
37.5 lbs.
64,200 @
25.0 lbs.
30,500 @
7.5 lbs.
4,070 @
7.5 lbs.
EC4 400 T 14 x 65 4.0 10.8 4.0 15.0 97,500 @
60.0 lbs.
97,000 @
40.0 lbs.
46,200 @
12.0 lbs.
3,850 @
12.0 lbs.
EC4 400 CT 14 x 65 4.0 10.7 4.0 15.0 97,500 @
60.0 lbs.
97,000 @
40.0 lbs.
46,200 @
12.0 lbs.
3,850 @
12.0 lbs.
EC4-CAB 60 T 10 x 35 0.6 10.0 2.0 10.0 15,000 @
9.0 lbs.
11,800 @
6.0 lbs.
6,800 @
2.4 lbs. n/a
EC4-CAB 60 CT 10 x 35 0.6 10.0 2.0 10.0 15,000 @
9.0 lbs.
11,800 @
6.0 lbs.
6,800 @
2.4 lbs. n/a
EC4-CAB 60SS T 10 x 18 0.6 10.0 2.0 9.0 13,900 @
9.0 lbs.
10,900 @
6.0 lbs.
6,300 @
2.4 lbs. n/a
EC4-CAB 60SS CT 10 x 18 0.6 10.0 2.0 9.0 13,900 @
9.0 lbs.
10,900 @
6.0 lbs.
6,300 @
2.4 lbs. n/a
EC4-CAB 100 T 10 x 35 1.0 10.0 2.0 13.0 25,800 @
15.0 lbs.
25,700 @
10.0 lbs.
12,200 @
3.0 lbs.
4,070 @
3.0 lbs.
EC4-CAB 100 CT 10 x 35 1.0 10.0 2.0 13.0 25,800 @
15.0 lbs.
25,700 @
10.0 lbs.
12,200 @
3.0 lbs.
4,070 @
3.0 lbs.
Model Tank Size
(inches)
Resin*
(cu. ft.)
Service
Flow
(gpm)
Drain
Flow
(gpm)
psi Drop High
Salting
Medium
Salting
Low
Salting Efficiency**
EC4 50 D 8 x 44 0.5 10.0 1.5 13.0 16,000 @
7.5 lbs.
10,800 @
5.0 lbs.
7,800 @
2.0 lbs.
3,920 @
2.0 lbs.
EC4 50 CD 8 x 44 0.5 10.0 1.5 13.0 16,000 @
7.5 lbs.
10,800 @
5.0 lbs.
7,800 @
2.0 lbs.
3,920 @
2.0 lbs.
EC4 60SS D 10 x 18 0.6 10.0 2.0 10.0 17,500 @
9.0 lbs.
11,900 @
6.0 lbs.
8,600 @
2.4 lbs.
3,580 @
2.4 lbs.
EC4 60SS CD 10 x 18 0.6 10.0 2.0 10.0 17,500 @
9.0 lbs.
11,900 @
6.0 lbs.
8,600 @
2.4 lbs.
3,580 @
2.4 lbs.
EC4 60S D 10 x 35 0.6 10.0 2.0 10.0 18,900 @
9.0 lbs.
12,900 @
6.0 lbs.
9,300 @
2.4 lbs.
3,870 @
2.4 lbs.
EC4 60S CD 10 x 35 0.6 10.0 2.0 10.0 18,900 @
9.0 lbs.
12,900 @
6.0 lbs.
9,300 @
2.4 lbs.
3,870 @
2.4 lbs.
EC4 75 D 8 x 44 0.75 9.3 1.5 15.0 24,000 @
11.2 lbs.
16,300 @
7.5 lbs.
11,800 @
3.0 lbs.
3,920 @
3.0 lbs.
EC4 75 CD 8 x 44 0.75 6.8 1.5 9.0 24,000 @
11.2 lbs.
16,300 @
7.5 lbs.
11,800 @
3.0 lbs.
3,920 @
3.0 lbs.
EC4 100 D 10 x 44 1.0 10.0 2.0 10.0 29,400 @
15.0 lbs.
23,900 @
10.0 lbs.
10,900 @
3.0 lbs.
3,630 @
3.0 lbs.
EC4 100 CD 10 x 44 1.0 10.0 2.0 10.0 29,400 @
15.0 lbs.
23,900 @
10.0 lbs.
10,900 @
3.0 lbs.
3,630 @
3.0 lbs.
EC4 100S D 10 x 35 1.0 10.0 2.0 10.0 29,400 @
15.0 lbs.
23,900 @
10.0 lbs.
10,900 @
3.0 lbs.
3,630 @
3.0 lbs.
EC4 100S CD 10 x 35 1.0 10.0 2.0 10.0 29,400 @
15.0 lbs.
23,900 @
10.0 lbs.
10,900 @
3.0 lbs.
3,630 @
3.0 lbs.
EC4 150 D 10 x 54 1.5 10.2 2.0 12.0 44,000 @
22.5 lbs.
35,900 @
15.0 lbs.
16,400 @
4.5 lbs.
3,630 @
4.5 lbs.
EC4 150 CD 10 x 54 1.5 7.8 2.0 8.0 44,000 @
22.5 lbs.
35,900 @
15.0 lbs.
16,400 @
4.5 lbs.
3,630 @
4.5 lbs.
EC4 250 D 13 x 54 2.5 12 3.0 13.0 73,400 @
37.5 lbs.
59,800 @
25.0 lbs.
27,300 @
7.5 lbs.
3,630 @
7.5 lbs.
EC4 250 CD 13 x 54 2.5 12 3.0 13.0 73,400 @
37.5 lbs.
59,800 @
25.0 lbs.
27,300 @
7.5 lbs.
3,630 @
7.5 lbs.
EC4 400 D 14 x 65 4.0 11.8 4.0 13.0 109,900 @
60.0 lbs.
89,500 @
40.0 lbs.
40,800 @
12.0 lbs.
3,400 @
12.0 lbs.
EC4 400 CD 14 x 65 4.0 9.5 4.0 9.0 109,900 @
60.0 lbs.
89,500 @
40.0 lbs.
40,800 @
12.0 lbs.
3,400 @
12.0 lbs.
EC4-CAB 60SS D 10 x 18 0.6 10.0 2.0 10.0 17,500 @
9.0 lbs.
11,900 @
6.0 lbs.
8,600 @
2.4 lbs.
3,580 @
2.4 lbs.
EC4-CAB 60SS CD 10 x 18 0.6 10.0 2.0 10.0 17,500 @
9.0 lbs.
11,900 @
6.0 lbs.
8,600 @
2.4 lbs.
3,580 @
2.4 lbs.
EC4-CAB 60 D 10 x 35 0.6 10.0 2.0 10.0 18,900 @
9.0 lbs.
12,900 @
6.0 lbs.
9,300 @
2.4 lbs.
3,870 @
2.4 lbs.
EC4-CAB 60 CD 10 x 35 0.6 10.0 2.0 10.0 18,900 @
9.0 lbs.
12,900 @
6.0 lbs.
9,300 @
2.4 lbs.
3,870 @
2.4 lbs.
EC4-CAB 100 D 10 x 35 1.0 10.0 2.0 10.0 29,400 @
15.0 lbs.
23,900 @
10.0 lbs.
10,900 @
3.0 lbs.
3,630 @
3.0 lbs.
EC4-CAB 100 CD 10 x 35 1.0 10.0 2.0 10.0 29,400 @
15.0 lbs.
23,900 @
10.0 lbs.
10,900 @
3.0 lbs.
3,630 @
3.0 lbs.
*Cation Exchange Media
** The conditioners are efficiency rated
according to NSF/ANSI 44. The effi-
ciency of the conditioner is valid
only at the stated salt dosage.
Higher or lower pressure will affect the effi-
ciency of the system.
*** Only the following models are
certified in the State of California: EC4 75 CV,
EC4 100 CV, EC4 150 CV, EC4-CAB 60 CV and
EC4-CAB 100 CV. All other models are not
certified in the State of California for the
purpose of making health claims.
*Cation Exchange Media
** The conditioners are efficiency rated
according to NSF/ANSI 44. The effi-
ciency of the conditioner is valid
only at the stated salt dosage.
Higher or lower pressure will affect the effi-
ciency of the system.
*** Only the following models are
certified in the State of California: EC4 75 CV,
EC4 100 CV, EC4 150 CV, EC4-CAB 60 CV and
EC4-CAB 100 CV. All other models are not
certified in the State of California for the
purpose of making health claims.

7
Salt Requirements
Two salt types are recommended for water conditioners:
Block Salt: Water conditioner block salt is reasonably priced, low in
impurities, and will not cake in the salt container.
Solar Salt: Solar salt is reasonably priced and low in impurities.
Resin Cleaners
It is always wise to provide preventative maintenance for your system.
If small amounts of iron are present in your water, use a salt containing
iron remover or add RainSoft water conditioner cleaner to the salt
tank when adding salt. If an excessive amount of iron is present in your
water, we recommend the installation of an iron filter before the
conditioner. See your RainSoft Dealer for details.
Maintenance Requirements
Cleaning the Regeneration Valve
The regeneration valve body is designed to last a lifetime, but from
time to time it may be necessary to clean and lubricate the moving
parts. Your water quality and the amount of regenerations necessary
will affect this maintenance schedule. Your local RainSoft Dealer is
knowledgeable in the different water qualities and will have the neces-
sary parts to complete this service.
Testing Your Water
If you are relying on this system for barium and radium reduction, we
recommend testing your water periodically (2 times a year) with a
hardness test strip (supplied) to ensure that the system is performing
properly, and that hardness, barium, and radium are being reduced*.
Additional hardness test strips are available at no charge from
RainSoft. Please call 1-800-860-7638 for your free two year supply.
In between testing, you can easily monitor the system’s performance in
the shower or while washing your hands. The feeling of soft water
should be present on your skin.
Product Certification Information
The EC4 Series is tested and certified by the WQA to NSF/ANSI
Standard 44 for the specific performance claims as verified and
substantiated by test data. Please refer to the performance data sheets
for specific reductions claims.
Water treatment devices sold to retail consumers in California, accom-
panied by certain health claims, must be certified by the State of
California Department of Health Services.
Models EC4 75 CV (certificate #06-1803), EC4 100 CV (certificate #06-
1802), EC4 150 CV (certificate #06-1801), EC4-CAB 60 CV(certificate
#06-1805) and EC4-CAB 100 CV (certificate #06-1804) are certified in
California. All other models are not certified in the State of California
for the purpose of making health claims. For health claims certified by
the State of California Department of Health Services, conditions of use
and replacement parts, please refer to the California performance data
sheets on pages 22—31.
7
!
Important Note: If you use a
cleaner containing nitric acid or
other strong oxidizing agents,
please use caution and follow
instructions carefully.
Helpful Tip: We recommend that
this service be performed every
three years or earlier if necessary.
!
Important Note: The supplied test
strip only tests for hardness. A
reduction of hardness is also an
indication that barium and radium
are being reduced*.
* Only the following models are
certified for barium and radium
reduction in the State of California:
EC4 75 CV, EC4 100 CV, EC4 150
CV, EC4-CAB 60 CV and EC4-CAB
100 CV. All other models are not
certified in the State of California
for the purpose of making health
claims.
Helpful Tip: Resin cleaner will
prevent the treatment media from
becoming iron fouled.
!
Important Note: Rock salt is not
recommended for RainSoft water
conditioners. If rock salt is used,
the salt container must be cleaned
out periodically. DO NOT USE
GRANULATED SALT! The use of
granulated salt may cause service
problems.

8
Installation Instructions
1. Safety Precautions
• To prevent an accident and/or injury, do not hoist the unit over
your shoulder. Use a hand truck to transport the unit.
• Do not lay the unit on its side.
• Wear safety glasses and work gloves during installation.
2. Test the Raw Water
• Test the raw water for hardness, iron and/or any other element that
could affect the performance of the system.
3. Check the Water Pressure
• Use a pressure gauge to confirm that the water pressure does not
exceed 120 psi. If the water pressure does exceed this limit, install
a pressure regulator on the inlet pipe of the unit. The minimum
water pressure for a conditioner is 20 psi. 60 psi is the optimum
operating pressure.
4. Locate a Site for the System
• There are three primary requirements needed for a site: the main
water source, a drain and an electrical connection. Locate the
system as close to these items as practical. Avoid drain lines over
25 feet long. In most applications, bypass any outside faucets.
• Place the system in the desired location. The location should have
a level, smooth, and clean surface.
• If the system is located outdoors, protect the unit from direct sun-
light. Direct sunlight can damage the fiberglass and other system
components. If necessary, build a box or shed.
5. Install the Valve Head
• Remove the cap plug from the tank.
• Lubricate the riser pipe o-ring and tank o-ring with the proper
silicone lubricant.
• Attach the supplied upper basket to the bottom of the control
valve; twist to lock in place.
• Align the upper basket with the riser pipe and slowly lower the
control valve onto the riser pipe, using a twisting motion.
• Align the control valve with the tank. Push down on the control
valve and continue to turn it clockwise until the valve o-ring seals
against the tank.
6. Turn Off the Water and Drain the Plumbing
• Turn off the water at the meter or the pressure tank.
• To drain the plumbing system, open all faucets in the house and
flush the toilets. The water will drain out of the lowest faucet or
outlet.
• Do not sweat pipes with water in them or while attached to the
system; steam will damage the plastic parts in the valve.
• Do not point the soldering torch directly at the mineral tank or
control valve. These composite materials will last a lifetime, but
cannot withstand the intense heat from a torch.
Helpful Tip: The drain may be a
floor drain, a sewer trap, utility
sink, vent stack, dry well, etc.,
depending on local plumbing
codes.
!
Important Note: The system can
only be installed outdoors in
climates that do not reach
freezing levels.
!
Important Note: Do not over-
tighten the valve to the tank.
Helpful Tip: This procedure will
allow air to enter the plumbing
system.
!
Important Note: Not Applicable
for EC4-CAB and SS Models.
!
Important Note: Applicable for
copper plumbing installations.

9
• Avoid short connections of pipe between the system and the
water heater. If you can’t avoid a short connection, move the
system to another location. As a last resort, install a heat trap or
check valve. If this causes “water hammer”, install a water
hammer suppressor.
7. Bypass the Outside Faucets
• Install plumbing pipes to bypass the outside faucet(s). If the
plumbing is not accessible, provide an untreated hose bib on the
inlet pipe.
8. Install the Pipe Connector (Yoke) to the
Bypass Valve
• Once the plumbing is complete, connect the yoke to the bypass
valve (see figure 1).
• Support all plumbing connected to the yoke.
• Connect the raw water supply to the inlet pipe connection of the
yoke. When looking at the front of the system, the inlet is the
pipe connection on the right side of the valve (see figure 2). The
arrow molded into valve indicates the direction of flow.
• Connect the treated water pipe to the outlet pipe connection on
the yoke. When looking at the front of the system, the outlet is
the pipe connection on the left side of the valve (see figure 2).
The arrow molded into the valve indicates the direction of flow.
9. Set the Bypass Valve to Bypass
• Move the bypass valve handles to the bypass position. The valve
handles should be perpendicular to the pipes (see figure 3).
!
Important Note: Too much weight
on the plumbing connections will
cause a leak.
!
Important Note: Short connections
of pipe may allow hot water to
back up into the system.
!
Important Note: The bypass valve
is not designed to withstand heat
from soldering or twisting from the
attached threaded connections.
Yoke
Bypass Valve
Inlet
Outlet
Figure 1
Figure 2
Figure 3

Installation Instructions continued from page 9
10. Install the Drain Line and Air Gap (Air Gap
Not Supplied)
• For all drain lines, use at least a 1/2 inch ID line.
• Connect the drain line to the drain outlet on back of the valve,
opposite the inlet connection (see figure 4). A fitting is required to
connect the female pipe thread to the drain line.
• Run the drain line to the air gap. The air gap must be installed
between the end of the drain line and the drain to prevent possible
back siphoning (see figure 5).
11. Install the Brine Safety Float
• Insert the brine well into the brine tank (see figure 6).
• Attach the brine well to the brine tank with the overflow elbow (see
figure 6).
10
!
Important Note: The air gap
should be two times the diam-
eter of the drain line or a
minimum of two inches. Please
check your local plumbing codes
to ensure compliance.
1/2" ELBOW
1/2" SPRING CLIP
1/2" DRAIN LINE
Figure 4
Figure 5
Figure 6
!
Important Note: Not Applicable
for EC4-CAB Models.