Rheem RHW42 Installation And Operation Manual page 14

Programming the Water Softener
NOTE: If your water supply contains iron, compen-
sate for it by adding to the water hardness
number. For example, assume your water is
20 gpg hard and contains 2 ppm iron. Add 5
to the hardness number for each 1 ppm of iron.
In this example, you would use 30 for your
hardness number.
2 ppm iron x 5 = 10
(times)
2. When finished setting your water's hardness num-
ber, press the SELECT button, and the display will
change to show the "Recharge Time" screen.
STEP 3. SET RECHARGE (REGENERATION)
START TIME
If you completed the previous step, the words "RE -
CHARGE TIME" should show in the display. Otherwise,
press the SELECT button several times until they do.
1. The softener's default recharge start time is 2:00
AM. This is normally a time of day when water is
not being used in the household. Hard water
bypasses the softener if the household draws
water during the recharge cycle. If a different
recharge start time is desired, press the
s
DOWN buttons to change the time, in 1-hour
increments. Be sure AM or PM is correct.
2. When the desired recharge start time is displayed,
press the SELECT button, and the display will
change to show the "Set Salt Type" screen.
STEP 4. SET SALT TYPE
If you completed the previous step, either "NaCl" (for
Sodium Chloride) or "KCl" (for Potassium Chloride)
should show in the display. Otherwise, press the
SELECT button several times until one of them does.
s
1. Press the UP or
type of salt you will be using in your water softener.
The default is NaCl (standard Sodium Chloride
water softener salt). If you will be using KCl
(Potassium Chloride) instead, be sure to set salt
type to KCl. This setting adjusts the regeneration
cycle times to compensate for the different rate at
20 gpg hardness
+10
30 HARDNESS NUMBER
FIG. 22
UP or
FIG. 23
DOWN buttons to set the
which KCl dissolves. See also Page 21 for more
information on salt types.
2. When the correct salt type is displayed, press the
SELECT button, and the display will change to
show the "Set Salt Level" screen.
STEP 5. SET SALT LEVEL
If you completed the previous step, the words "SET
SALT LEVEL" should show in the display. Otherwise,
press the SELECT button until they do.
8
7
6
Salt
Level
5
4
1. Lift the salt lid and level the salt in the storage
tank.
2. The salt level scale, on the brinewell inside the
tank, has numbers from 0 to 8 (see Fig. 24).
Observe the highest number the leveled salt is at,
or closest to.
3. Press the UP or
number on the screen corresponds to the salt level.
At level 2 or below, "LOW SALT LEVEL" will flash
in the display. If you wish to turn this feature off,
s
press the DOWN button past 0, and the word
"OFF" flashes in the display.
4. When finished setting the salt level, press the
SELECT button. The display returns to the normal
time of day screen (Fig. 25).
SALT LEVEL MONITOR SYSTEM
You must set salt level each time salt is added to
the water softener. The salt monitor system esti-
mates salt levels, and accuracy will vary with different
salts. At level 2 or below, "LOW SALT LEVEL" will
flash in the display (Fig. 26) to remind you to add salt.
14
Brine-
well
Num -
bers
s
DOWN buttons until the
FIG. 24
FIG. 25
FIG. 26