📄 Download the Grundfos MAGNA3 Data Booklet (PDF)
The Grundfos MAGNA3 32-120 GF N 165 115-230V is a premium intelligent circulator for heating, cooling and domestic hot-water systems. Its ECM permanent-magnet motor and AUTOADAPT logic continuously find the system’s optimum duty point — typically cutting circulator energy use by up to 75% versus fixed-speed pumps — while the built-in heat energy monitor tracks system performance without extra sensors.
Typical applications
- Commercial hydronic heating & chilled-water circulation
- Domestic hot-water recirculation (stainless housing)
- Geothermal and district energy loops
TECHNICAL SPECIFICATIONS: Grundfos MAGNA3 32-120 GF N 165 115-230V Smart Circulator Pump, Stainless (P/N 99833308)
| Product Number | 99833308 |
| Model | MAGNA3 32-120 GF N 165 115-230V |
| Product Type | MAGNA3 variable-speed wet-rotor circulator with AUTOADAPT |
| Connection | DN32 — ANSI/GF flange, 165 mm port-to-port |
| Max. Head | 39 ft (12 m) |
| Pump Housing | Stainless steel (potable / domestic hot water approved) |
| Power Supply | 115-230V 60 Hz, single-phase ECM permanent-magnet motor |
| Controls | AUTOADAPT, FLOWADAPT/FLOWLIMIT, proportional/constant pressure & temperature modes, built-in heat energy monitor |
| Connectivity | Wireless GENIair; BACnet/Modbus/LON via optional CIM module |
| Liquid Temperature | 14 °F to 230 °F (-10 °C to 110 °C) |
| Shipping Weight | 17.6 lbs (boxed) |
| Shipping Dimensions | 11.7" × 10.4" × 10.7" (L × W × H, boxed) |
| EAN | 5713834921001 |
| HS Code (Tariff) | 8413.70 — centrifugal pump |
| Warranty | Grundfos limited warranty — 24 months from installation, max. 30 months from production |
