Table of Contents
Advertisement
TIME OF REGENERATION
The system has a default setting of 2:00 a.m.
To change:
• Use the UP
or DOWN
time for regeneration.
• Use procedure in SET PRESENT TIME OF DAY.
• Press the SET button to accept.
TOTAL WATER HARDNESS
Water hardness is the hardness of the supply water
to the house in grains per gallon. The system has a
default setting of 25 grains/gallon.
A water test should be performed at the time
of installation to determine your water hardness
(grains/gallon). You can get the grains per gallon
(gpg) hardness of your water supply from a water
analysis laboratory. If you are on a municipal
supply, call your local water department. If your
report shows hardness in parts per million (ppm),
simply divide by 17.1 to get the equivalent number
of grains per gallon.
To change:
• Use the UP
or DOWN
water hardness.
• Press the SET button.
• Change the digits by using the UP
or LEFT button.
• Press the SET button to accept.
Installation Instructions
button to select a new
button to select total
, DOWN
SALT PER REGEN AND CAPACITY
These two settings are required to provide the most
efficient operation of the system in your installation.
Salt efficiency is improved by regenerating part of
the capacity. For example, the GNPR40 has 37,100
grains of capacity. It is more efficient to regenerate
20,000 grains of capacity more frequently than
waiting and regenerating the complete 37,100
grains.
30
25
20
15
10
5
0
0
10
30
25
20
15
10
5
0
0
10
Both SALT PER REGEN and CAPACITY are
determined based on the chart on page 13.
FOR CALIFORNIA INSTALLATIONS:
• California regulations require the control setting
to yield 4,000 grains of capacity per pound of salt.
To meet these requirements, the SALT PER REGEN
and CAPACITY must be set no higher than
indicated below:
Model
GNPR40L
GNPR48L
12
GNPR40L
20
30
40
Capacity (1,000 grains)
GNPR48L
20
30
40
Capacity (1,000 grains)
Capacity Default Salt Default
16.5 KGr
4.0 lbs
15.2 KGr
3.6 lbs
50
50
Advertisement
Table of Contents
Troubleshooting
