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SKU: 99752234
Grundfos Hydro Multi-E 3 x CRNE 5-7 Three Phase 3 x 1.1kW Variable Speed 304ss Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Emergency medical response hubs and ambulance maintenance stations rely on the Hydro Multi-E 3 CRNE 5-7. Configured with three CRNE 5-7 vertical pumps in parallel, the booster dynamically matches motor speed to immediate water requirements. Part number 99752234 provides the complete tested package in a single order line.
The variable-speed booster accommodates demand peaks up to 510 L/min. Multistage vertical hydraulics produce up to 69 metres of maximum head. Integrated Multi-Master intelligence coordinates the pumps without requiring an external control panel, ensuring automatic role swapping and uninterrupted pressure stabilization.
Fabricated on an anti-vibration baseplate, the booster incorporates stainless steel manifolds, two Rp 2 inch threaded 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 7.11 A (3 x 2.37 A per pump). Motors carry IP55 sealing with maximum pressure of 10 bar. Liquid-temperature suitability is 5°C to 60°C, and inlet pressure is rated to 10 bar.
The package delivers energy-efficient clean-water boosting across mixed-use commercial buildings, corporate office towers and shopping centres with zero fuss. Variable-speed motor modulation makes the set a practical clean-water pressure-boosting solution for both new plant rooms and system upgrades.
FEATURES
- Cascade logic brings pumps on-line and off-line against changing demand without manual intervention.
- Each main pump is rated 1.1 kW (P2), so per-pump draw scales down as speed follows demand.
- Each pump is driven by IE5 permanent magnet motors with frequency-controlled speed matching demand.
- The system pairs three CRNE 5-7 pumps in parallel duty, controlled as a single coordinated system.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- Dry-running protection is built into the control, protecting the pumps if the suction supply is interrupted.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a smartphone.
- Stainless steel manifolds provide two Rp 2 inch threaded manifold connections ready for plant pipework.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- The controller tracks the pressure setpoint with proportional deviation alerts before conditions become faults.
- Maximum operating pressure of 10 bar with motors sealed to IP55.
- Power use precisely tracks demand, avoiding the waste of fixed-speed alternates.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
What's Included
- 3 x Grundfos CRNE 5-7 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 | 510 L/Min |
| Max Head | 69 m |
| Power | 3 x 1.1 kW / 415v |
| Rated Current | 3 x 2.37 Amps |
| Suitable For | Commercial Water Supply, Process and Food-Grade Duties |
| Body Material | Stainless Steel |
| Liquid Temperature | 5°C to 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 motor drive hardware powers and modulates the centrifugal pumps on this booster package?
Motor propulsion powering the Grundfos Hydro Multi-E 3 CRNE 5-7 U2 A-A-I-I-DU (part number 99752234) features three 1.1 kW IE5 permanent-magnet MGE electric units configured for a 3 x 380-415 V electrical line.
What vertical pumping head and maximum system pressure rating applies to this booster package?
Elevation lift capacity on the Hydro Multi-E 3 CRNE 5-7 develops up to 69 m total dynamic head backed by an 10 bar rated pressure threshold.
How are the suction and discharge manifolds configured for direct line connection and servicing?
Plumbed for rapid site installation, the Hydro-Multi-E-3-CRNE-5-7 includes R 2 stainless steel headers equipped with dedicated isolating valves, check valves, and pressure transmitters.
Under what factory warranty terms is this variable frequency booster package supplied?
Manufacturer coverage on the Hydro Multi E 3 CRNE 5 7 includes a genuine Grundfos two-year factory warranty backed by nationwide Australian technical support and spare parts.
What peak water transfer capacity does this multistage booster system provide for building services?
Supplying high-demand pipework networks, the 3 CRNE 5-7 (Hydro Multi-E) discharges a maximum fluid flow rate of 510 L/min.
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