Filter
Top Products
4
Specification guidelines.
Rated Capacity—See rating decal, located on the Water Softening System
GNSF18Z GNSF23Z GNSF35Z
Operating Instructions Safety InstructionsCustomer Service Troubleshooting Tips
Amount of high capacity resin (lbs/cu. ft)
Resin tank nominal size (in., dia. x height)
Service flow rate (gpm)
(see rating label on softener)
Water supply maximum hardness (gpg) ➄
Water supply maximum clear water iron (ppm) ➄
Water pressure limits (min.-max. psi)
Pressure drop at rated service flow (psig)
Water temperature maximum (°F)
Water supply minimum flow rate (gpm)
Regeneration cycle flow rates (gpm)
Fill (flow to brine tank)
Brining
Brine Rinse
Backwash
Fast Rinse
38/.73
10 x 21
7
25
3
20-125
15
120
3
.3
.24
.14
1.8
1.8
31.2/.6
8 x 40
8
50
3
20-125
15
120
3
.3
.19
.12
1.8
1.8
48.4/.93
9 x 40
10
100
6
20-125
15
120
3
.3
.20
.16
2.0
2.0
➄Determined by water analysis from a qualified water testing laboratory.
}
(flow to drain)
GNSF18Z
11–1/2″
INLET-OUTLET
29–3/4″
22–1/4″
20–1/4″
21–1/2″
3–3/8″
INLET
OUT
GNSF23Z &
GNSF35Z
11–1/2″
3–3/8″
OUT
INLET
INLET-OUTLET
48–3/4″
41–1/4″
18–1/4″
40–1/2″