Roll over image to zoom
SKU: 99752208
Grundfos Hydro Multi-E 3 x CRNE 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
Regional showground facilities and event pavilion buildings rely on the Hydro Multi-E 3 CRNE 5-4. Integrated variable-speed drives coordinate the three CRNE 5-4 pumps in parallel, seamlessly ramping output as fixtures open. Part number 99752208 provides the complete tested package in a single order line.
Providing commanding flow capacity up to 510 L/min on demand, Multistage vertical hydraulics produce up to 39 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.
Delivered on an integrated heavy-duty base, the booster features 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 1 x 200-240 V supply at 50 / 60 Hz with combined rated current of 13.5 A (3 x 4.5 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.
Commercial installations frequently feature the set across high-rise apartments, hotel plant rooms and schools and universities for plant room modernization. Variable-speed motor modulation makes the set a practical clean-water pressure-boosting solution for both new plant rooms and system upgrades.
FEATURES
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a smartphone.
- Each pump is driven by IE5 permanent magnet motors with frequency-controlled speed matching demand.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
- Both constant-pressure and proportional-pressure modes are available, so plant rooms can tune response to pipework.
- Power use precisely tracks demand, avoiding the waste of fixed-speed alternates.
- At P2 each main pump is 0.75 kW, covering the duty without oversizing the frame.
- Pumps are cut in and out according to demand, every running unit turning at the same speed to hold the pressure set point.
- The system protects its pumps against dry running if the incoming supply is lost.
- Stainless steel manifolds provide two Rp 2 inch threaded manifold connections ready for plant pipework.
- Three Grundfos CRNE 5-4 vertical multistage pumps run in parallel on one common base frame.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- Maximum operating pressure of 10 bar with motors sealed to IP55.
What's Included
- 3 x Grundfos CRNE 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 | 510 L/Min |
| Max Head | 39 m |
| Power | 3 x 0.75 kW / 240v |
| Rated Current | 3 x 4.5 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.
Which fluid delivery volume does this parallel booster assembly displace during high demand hours?
To support heavy fluid consumption, the Grundfos Hydro Multi-E 3 CRNE 5-4 U8 A-A-I-I-DU (part number 99752208) delivers an overall water transfer volume of 510 L/min.
What motor propulsion and electronic speed control system drives this multi-pump booster skid?
Dedicated electric motor packages on the Hydro Multi-E 3 CRNE 5-4 feature three IE5 permanent-magnet MGE electric motors of 0.75 kW apiece on a 1 x 200-240 V power supply.
Under peak network pressure requirements, what dynamic head does this booster unit maintain?
Hydraulic elevation capability on the Hydro-Multi-E-3-CRNE-5-4 generates up to 39 m total dynamic head while supporting an operating pressure rating of 10 bar.
How are the common suction and discharge headers arranged across the parallel pump set?
Header plumbing on the Hydro Multi E 3 CRNE 5 4 provides R 2 stainless steel suction and discharge connections accompanied by isolating valves and discharge check valves.
What warranty coverage backs this complete factory assembled booster assembly?
Nationwide factory protection backs the 3 CRNE 5-4 (Hydro Multi-E) through a genuine Grundfos two-year manufacturer warranty with local technical support across Australia.
Need help choosing the right pump?
Our team of pump experts are here to help you find the perfect solution for your application.
- Free expert advice
- Pump sizing & system recommendations
- Fast response — call or email us