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SKU: 93320257
Grundfos Hydro Multi-E 3 x CRE 45-4-2 Three Phase 3 x 22kW Variable Speed Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Dental clinic suites requiring non-surging supply across multiple surgeries specify the Hydro Multi-E 3 CRE 45-4-2. The package operates three Grundfos CRE 45-4-2 vertical multistage pumps in parallel, automatically staging each unit as flow demand increases. Part number 93320257 provides the complete tested package in a single order line.
Supplying clean water at rates up to 3500 L/min across the property, Multistage vertical hydraulics produce up to 133.1 metres of maximum head. Because every pump carries its own frequency converter and Multi-Master software elects the controlling pump itself, losing a control unit or pressure sensor means seamless handover rather than a shutdown.
Arriving fully built on an integrated steel skid, the system combines stainless steel manifolds, two 200 mm manifold connections, isolation and non-return valves, pressure sensors, plus a 24L diaphragm tank. It connects to a 3 x 380-415 V supply at 50 / 60 Hz with combined rated current of 152 A (3 x 50.67 A per pump). Motors carry IP54 sealing with maximum pressure of 16 bar. Liquid-temperature suitability is 5°C to 60°C, and inlet pressure is rated to 16 bar.
High-demand facilities such as high-rise apartments, hotel plant rooms and schools and universities rely on the system for smooth, inverter-driven flow. Variable-speed motor modulation makes the set a practical clean-water pressure-boosting solution for both new plant rooms and system upgrades.
FEATURES
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
- Stainless steel manifolds provide two 200 mm manifold connections ready for plant pipework.
- Variable speed comes from frequency converters matched to IE5 permanent magnet motors, keeping the booster set in its efficient range.
- Both constant-pressure and proportional-pressure modes are available, so plant rooms can tune response to pipework.
- The system protects its pumps against dry running if the incoming supply is lost.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a smartphone.
- Each main pump is rated 22 kW (P2), so per-pump draw scales down as speed follows demand.
- Cascade logic brings pumps on-line and off-line against changing demand without manual intervention.
- Slow-speed duty and staged switching keep consumption down through low-demand hours.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- Maximum operating pressure of 16 bar with motors sealed to IP54.
- Three Grundfos CRE 45-4-2 vertical multistage pumps run in parallel on one common base frame.
What's Included
- 3 x Grundfos CRE 45-4-2 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 | 3500 L/Min |
| Max Head | 133 m |
| Power | 3 x 22 kW / 415v |
| Rated Current | 3 x 50.67 Amps |
| Suitable For | Commercial Water Supply, Pressure Boosting |
| Body Material | Cast Iron |
| Liquid Temperature | 5°C to 60°C |
| Inlet Size | 200 mm |
| Outlet Size | 200 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 are the suction and discharge lines plumbed and valved across this packaged booster assembly?
Connecting the parallel pumps, the Grundfos Hydro Multi-E 3 CRE45-4-2 U2 A-A-I-I-D (part number 93320257) utilizes DN 200 stainless steel suction and discharge headers with integrated check valves and isolation valves.
Which factory warranty provisions protect this packaged variable speed booster unit?
Factory warranty terms for the Hydro Multi-E 3 CRE45-4-2 include a genuine Grundfos two-year manufacturer warranty securing the variable speed motors, headers, and electronics.
How much water flow rate can this multi-pump package displace when operating at full capacity?
Total volumetric discharge from the Hydro-Multi-E-3-CRE45-4-2 delivers up to 3500 L/min to maintain steady distribution pressure.
Which electric motor drives and frequency converters provide propulsion on this booster skid?
Mechanical drive on the Hydro Multi E 3 CRE45 4 2 features three inverter-controlled IE5 permanent-magnet MGE electric motors producing 22 kW per pump operating from a 3 x 380-415 V power supply.
Which vertical head pressure does this parallel multistage booster assembly generate?
Maximum dynamic head on the 3 CRE45-4-2 (Hydro Multi-E) reaches up to 133.1 m while providing an operating pressure threshold of 16 bar.
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