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SKU: 99614330
Grundfos Hydro Multi-E 3 x CRE 5-4 Single Phase 3 x 0.75kW Variable Speed Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Across installations such as showers, coffee machines and dishwashers competing for one limited mains feed, the Hydro Multi-E 3 CRE 5-4 maintains stable pressure at every draw-off point. Quote part number 99614330 to have it arrive pre-configured and ready for the plant room.
It handles flows up to 455 L/min across the system. The pumps can develop up to 38 metres of head when pressure demand increases. There is no separate central controller to purchase: Multi-Master control resides within the pumps, either unit can assume the controlling role, and a fault is handed over cleanly without interrupting supply.
For installation, the booster is supplied pre-assembled with stainless steel manifolds, two 50 mm manifold connections, isolation valves, non-return valves, pressure sensors and a gauge, plus a 24L diaphragm tank. It is designed for 1 x 200-240 V power at 50 / 60 Hz with a rated current of 13.5 A, with IP54 motor protection and a 10 bar maximum system pressure. Liquid-temperature suitability is 5°C to 60°C. Inlet pressure is rated to 10 bar.
Typical duty sits with hotel plant rooms, schools and universities and aged-care complexes. It is designed for clean-water pressure boosting where demand varies through the day.
Features
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a phone.
- Maximum operating pressure of 10 bar with motors sealed to IP54.
- Slow-speed duty and staged switching keep consumption down through low-demand hours.
- The system protects its pumps against dry running if the incoming supply is lost.
- Pump staging follows demand automatically: pumps enter at low speed as pressure drops, ramp to equal speed, and exit as flow fades.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- The stainless steel manifold assembly is supplied with two 50 mm manifold connections.
- No external controller required: Multi-Master redundancy lets either pump assume the controlling role.
- The system pairs three CRE 5-4 pumps in parallel duty, controlled as a single coordinated system.
- At P2 each main pump is 0.75 kW, covering the duty without oversizing the frame.
- Variable speed comes from frequency converters matched to IE5 permanent magnet motors, keeping the booster set in its efficient range.
- The set ships with an 24L precharged diaphragm tank for low-flow stability.
- The controller tracks the pressure setpoint with proportional deviation alerts before conditions become faults.
What's Included
- 3 x Grundfos CRE 5-4 vertical multistage pumps
- IE5 permanent magnet motors with integrated frequency converters
- Stainless steel suction manifold
- Stainless steel discharge manifold
- Non-return valves
- Isolation valves
- Pressure sensors/transmitters
- Pressure gauge
- 24L diaphragm pressure tank
- Factory assembled and tested booster system
SPECIFICATIONS
| Max Flow | 455 L/Min |
| Max Head | 38 m |
| Power | 3 x 0.75 kW / 240v |
| Rated Current | 3 x 13.5 Amps |
| Suitable For | Commercial Water Supply, Pressure Boosting |
| Body Material | Cast Iron |
| Liquid Temperature | 5°C – 60°C |
| Inlet Size | 50 mm |
| Outlet Size | 50 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
What plumbing connection hardware and stainless steel manifolds are integrated on this skid?
Header plumbing on the Grundfos Hydro Multi-E 3 CRE 5-4 U8 A-A-I-I-DU provides R 2 stainless steel suction and discharge connections accompanied by isolating valves and discharge check valves.
How is this packaged multi pump booster unit backed by factory warranty support?
Protection on the Hydro Multi-E 3 CRE 5-4 is provided by a comprehensive Grundfos two-year manufacturer warranty with extensive Australian technical service and spare parts support.
What fluid displacement flow rate does this multi pump booster assembly provide under full duty?
Under maximum network draw, the Hydro-Multi-E-3-CRE-5-4 supplies a peak fluid flow rate of up to 455 L/min across its variable speed centrifugal stages.
How are the pump wet ends powered and electronically modulated across variable facility draw?
Propulsion across the Hydro Multi E 3 CRE 5 4 is supplied by three IE5 permanent-magnet MGE electric motors rated at 0.75 kW each, operating on a 1 x 200-240 V electrical supply with integrated frequency converters for precise pressure control.
Which total head pressure does the multi pump package maintain across the distribution network?
For vertical pressure boosting, the 3 CRE 5-4 (Hydro Multi-E) produces up to 38 m total elevation head with a 10 bar maximum working pressure envelope.
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