Description
The Grundfos 99445636 (Hydro Multi-E 2 CRE 15-1 UK A-A-A-U-A) is a Vertical Multistage Centrifugal Pump — Variable Speed. Cast iron head and base, stainless steel wetted parts, with integrated variable frequency drive and IE5-rated permanent magnet motor for energy-optimized pressure control. Nominal performance: 159US gpm at 50.5ft. Rated 208-230V, 3.0-Phase, 60 Hz. Applications include Industrial water supply & transfer, Rotor & spray irrigation, Ground water transfer and more.
Integrated Variable Frequency Drive
The VFD is built into the pump head — no external drive cabinet, no panel wiring, no drive-to-motor cable. Reduces panel space, installation cost, and failure points.
IE5 Permanent Magnet Motor
CRE uses a Grundfos MGE permanent magnet motor rated IE5 — the highest commercially available efficiency class. Significant energy reduction vs IE3 motors at partial load.
Proportional Pressure Control
AUTOADAPT automatically adjusts set point based on actual system demand. No manual curve adjustment needed after commissioning.
iSOLUTIONS Ready
CRE supports Grundfos GO app, CIM communication modules (PROFIBUS, MODBUS, BACnet), and remote monitoring. Full integration into building management systems.
Soft Start Built In
The integrated drive provides controlled ramp-up, eliminating water hammer and reducing mechanical stress on seals and couplings at every start.
Pump Protection Built In
Dry-run protection, over-temperature shutdown, and motor current monitoring are standard in every CRE. No external protection relay required.
| Model Number | 99445636 |
| Product Series | CRE |
| Series Description | Vertical Multistage Centrifugal Pump — Variable Speed |
| Voltage | 208-230V |
| Phase | 3.0-Phase |
| Frequency | 60 Hz |
| Nominal Flow | 159US gpm |
| Nominal Head | 50.5ft |
| Max Operating Pressure | 232.06psi |
| Max Fluid Temperature | 179.6°F |
| Max Ambient Temperature | 104°F |
| Housing Material | Cast iron |
| Electrical | Verify supply voltage, phase, and frequency match nameplate before installation: 208-230V, 3.0-Phase, 60 Hz. |
| Temperature limits | Do not exceed max fluid temperature 179.6°F or max ambient temperature 104°F. Exceeding limits damages seals and motor insulation. |
| Dry running | Do not run dry. CRE pumps use the pumped fluid to lubricate the shaft seal. Dry running destroys the seal within seconds. Install dry-run protection on all automatic installations. |
| Maintenance | Refer to the Grundfos Installation and Operating Manual (IOM) for correct installation, commissioning, and maintenance. Contact PumpStop for documentation. |
- Density
- 62.29 lb/ft³
- Frequency
- 60 Hz
- Gross weight
- 640.0 lb
- Housing
- Cast iron
- Liquid max temp
- 176°F
- Liquid temperature range
- 32 .. 176 °F
- Max flow
- Product name:Hydro Multi-E 2 CRE 15-1 UK A-A-A-U-A
- Maximum ambient temperature
- 104 °F
- Maximum head
- 63.98 ft
- Maximum operating pressure
- 232.06 psi
- Maximum permissible inlet pressure
- 116.03 psi
- Net weight
- 417.0 lb
- Number of phases of main pump
- 3
- Number of pumps
- 2
- Phase
- 3
- Pump
- 3
- Pump housing
- Cast iron
- Pumped liquid
- Water
- Radio interference supression
- IEC/CISPR 11-1B
- Rated current
- 11.5 A
- Rated flow
- 159 US gpm
- Rated head
- 50.5 ft
- Rated voltage
- 3 x 208-230 V
- Sales region
- Namreg
- Selected liquid temperature
- 68 °F
- Start. 1 method
- E
- Type
- CRE 15-1
Dimensional Drawing
Wiring Diagram
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