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SKU: 99614477
Grundfos Hydro Multi-E 3 x CRE 20-4 Three Phase 3 x 5.5kW Variable Speed Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
In residential towers and medium commercial sites outgrowing their mains pressure, the simultaneous demand of the morning peak places heavy loads on the supply; the Hydro Multi-E 3 CRE 20-4 answers with three CRE 20-4 pumps operating in parallel. Specify part number 99614477 and the whole set lands tested, assembled and ready for pipework.
The system supports flow rates up to 1603 L/min. It can develop up to 82 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.
For installation, the booster is supplied pre-assembled with stainless steel manifolds, two 100 mm manifold connections, isolation valves, non-return valves, pressure sensors and a gauge, plus a 24L diaphragm tank. It is designed for 3 x 380-415 V power at 50 / 60 Hz with a rated current of 32.9 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.
Applications include hotel plant rooms, schools and universities and high-rise apartments. The control flexibility suits clean-water boosting in new installations and upgrades.
Features
- Pump staging follows demand automatically: pumps enter at low speed as pressure drops, ramp to equal speed, and exit as flow fades.
- Frequency converters on the motors pair with IE5 permanent magnet motors for efficient part-load operation.
- Maximum operating pressure of 10 bar with motors sealed to IP54.
- 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.
- Three Grundfos CRE 20-4 pumps share the boosting work in parallel.
- Dry-running protection is built into the control, protecting the pumps if the suction supply is interrupted.
- At P2 each main pump is 5.5 kW, covering the duty without oversizing the frame.
- The set ships with an 24L precharged diaphragm tank for low-flow stability.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- Stainless steel manifolds provide two 100 mm manifold connections ready for pipework.
- Constant pressure control holds the delivered pressure flat while proportional mode lets setpoints flex with demand.
- Slow-speed duty and staged switching keep consumption down through low-demand hours.
What's Included
- 3 x Grundfos CRE 20-4 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 | 1603 L/Min |
| Max Head | 82 m |
| Power | 3 x 5.5 kW / 415v |
| Rated Current | 3 x 32.9 Amps |
| Suitable For | Commercial Water Supply, Pressure Boosting |
| Body Material | Cast Iron |
| Liquid Temperature | 5°C – 60°C |
| Inlet Size | 100 mm |
| Outlet Size | 100 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.
How is mechanical power delivered and electronically regulated across this multi pump booster skid?
Electronic speed regulation across the Grundfos Hydro Multi-E 3 CRE 20-4 U2 A-A-I-I-DU is provided by three IE5 permanent-magnet MGE electric motors rated at 5.5 kW apiece on 3 x 380-415 V power, modulating motor rpm according to demand.
What dynamic elevation head does this variable frequency booster package achieve on the mains?
Hydraulic elevation capability on the Hydro Multi-E 3 CRE 20-4 generates up to 82 m total dynamic head while supporting a maximum operating pressure rating of 10 bar.
Which manifold connection ports and isolating ball valves are factory fitted on this unit?
Common manifolding across the Hydro-Multi-E-3-CRE-20-4 utilizes DN 100 stainless steel suction and discharge pipework with integrated non-return valves and isolating ball valves.
How is this packaged multi pump booster skid protected under manufacturer warranty?
Investment protection for the Hydro Multi E 3 CRE 20 4 features a genuine Grundfos two-year manufacturer warranty supported by nationwide technical service and replacement components.
What fluid discharge rate does this parallel pump package supply across the distribution ringmain?
For high-demand distribution pipework, the 3 CRE 20-4 (Hydro Multi-E) delivers a peak water displacement rate of 1603 L/min across its parallel multistage pump assembly.
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