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| SPECIFICATIONS/DIMENSIONS |
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| GNSF18 | GXSF27 | GNSF35 | GXSF39 | |
Rated capacity* |
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| (see rating label on water softener) | ||||
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Amount of high capacity resin (lbs/cu. ft) | 33/.64 | 36.4/.7 | 48.4/.93 | 52.5/1 | ||||
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Resin tank nominal size (in., dia. x height) | 10 x 21 | 8 x 40 | 9 x 40 | 9 x 40 | ||||
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Service flow rate (gpm) |
| (see rating label on water softener) | ||||||
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Water supply maximum hardness (gpg) | 25 | 100 | 100 |
| 100 | |||
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Water supply maximum clear water iron (ppm)** | 3 | 5 | 6 |
| 8 | |||
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Water pressure limits | ||||||||
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Pressure drop at rated service flow (psig) | 15 | 15 | 15 |
| 15 | |||
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Water temperature maximum (°F) | 120 | 120 | 120 |
| 120 | |||
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Water supply minimum flow rate (gpm) | 3 | 3 | 3 |
| 3 | |||
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Regeneration cycle flow rates (gpm) |
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| Fill (flow to brine tank) | .3 | .3 | .3 |
| .3 | ||
| Brining | }(flow to drain) |
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| .24 | .19 | .20 |
| .20 | |||
| Brine Rinse |
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| .14 | .12 | .16 |
| .16 | |||
| Backwash |
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| 1.8 | 1.8 | 2.0 |
| 2.0 | |||
| Fast Rinse |
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| 1.8 | 1.8 | 2.0 |
| 2.0 |
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These systems conform to WQA
**Extent of iron removal may vary with conditions. Use of Diamond Crystal® Red•Out® or Super Iron Out® will improve iron removal. Refer to Cleaning Iron Out of the Water Softening System section.
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| GXSF27, GXSF39 |
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| & GNSF35 |
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| OUT |
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| INLET |
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GNSF18 |
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| OUT |
| INLET |
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11