GE GNPR48L, GNPR40L Time of Regeneration, Total Water Hardness, Salt PER Regen and Capacity

Installation Instructions

TIME OF REGENERATION

The system has a default setting of 2:00 a.m.

To change:

•Use the UP or DOWN button to select a new 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 button to select total water hardness.

•Press the SET button.

•Change the digits by using the UP , DOWN or LEFT button.

•Press the SET button to accept.

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.

GNPR40L

	30
(lbs)	25
	20
Setting
	15
Salt	10
	5
	0
		0	10	20		30	40	50
				Capacity (1,000 grains)
	30				GNPR48L
(lbs)	25
	20
Setting
	15
Salt	10
	5
	0
		0	10	20		30	40	50

Capacity (1,000 grains)

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	Capacity Default	Salt Default
GNPR40L	16.5 KGr	4.0 lbs
GNPR48L	15.2 KGr	3.6 lbs

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