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SKU: 99614345
Grundfos Hydro Multi-E 3 x CRE 5-4 Three 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
In holiday units and boutique apartment blocks juggling showers at the morning peak, the simultaneous demand of the morning peak places heavy loads on the supply; the Hydro Multi-E 3 CRE 5-4 answers with three CRE 5-4 pumps operating in parallel. One factory-tested package replaces a shelf of loose components; order part number 99614345 to put it on site.
The system supports flow rates up to 457 L/min. It can develop up to 39 metres of head for dependable pressure boosting. 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.
The three-pump package arrives as one base-mounted assembly with stainless steel manifolds, two 50 mm manifold connections, valves, sensors and a pressure gauge, plus a 24L diaphragm tank. Electrical supply is 3 x 380-415 V at 50 / 60 Hz with a rated current of 5.55 A. The motors have IP54 protection and the system is rated to 10 bar maximum pressure. Liquid-temperature suitability is 5°C to 60°C. Inlet pressure is rated to 10 bar.
Expect it on industrial process supply and mixed-use commercial buildings sites, plus schools and universities duties. It provides clean-water pressure boosting for both new plant rooms and refits.
Features
- Rated 0.75 kW (P2) on every main pump in the frame.
- The system protects its pumps against dry running if the incoming supply is lost.
- The set ships with an 24L precharged diaphragm tank for low-flow stability.
- Variable speed comes from frequency converters matched to IE5 permanent magnet motors, keeping the booster set in its efficient range.
- Three Grundfos CRE 5-4 vertical multistage pumps run in parallel on one common base frame.
- Setup and monitoring run through the Grundfos GO app rather than a panel visit.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- Pumps are cut in and out according to demand, every running unit turning at the same speed to hold the pressure set point.
- Power use precisely tracks demand, avoiding the waste of fixed-speed alternates.
- The package is wet-tested and pre-configured, requiring only pipework and power on site.
- The stainless steel manifold assembly is supplied with two 50 mm manifold connections.
- Constant pressure control holds the delivered pressure flat while proportional mode lets setpoints flex with demand.
- Maximum operating pressure of 10 bar with motors sealed to IP54.
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 | 457 L/Min |
| Max Head | 39 m |
| Power | 3 x 0.75 kW / 415v |
| Rated Current | 3 x 5.55 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.
Which electric motor package and drive electronics power each pump on this packaged skid?
Electronic speed regulation across the Grundfos Hydro Multi-E 3 CRE 5-4 U2 A-A-I-I-DU is provided by three IE5 permanent-magnet MGE electric motors rated at 0.75 kW apiece on 3 x 380-415 V power, modulating motor rpm according to demand.
What maximum dynamic lift and operating pressure rating applies to this booster package?
Hydraulic elevation capability on the Hydro Multi-E 3 CRE 5-4 generates up to 39 m total dynamic head while supporting a maximum operating pressure rating of 10 bar.
What manifold port fittings and line isolation hardware are installed on this booster unit?
Common manifolding across the Hydro-Multi-E-3-CRE-5-4 utilizes R 2 stainless steel suction and discharge pipework with integrated non-return valves and isolating ball valves.
Which factory warranty provisions apply to this variable speed booster assembly?
Investment protection for the Hydro Multi E 3 CRE 5 4 features a genuine Grundfos two-year manufacturer warranty supported by nationwide technical service and replacement components.
What maximum water flow capacity does this multi stage booster unit deliver across the network?
For high-demand distribution pipework, the 3 CRE 5-4 (Hydro Multi-E) delivers a peak water displacement rate of 457 L/min across its parallel multistage pump assembly.
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