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SKU: 99752115
Grundfos Hydro Multi-E 3 x CRNE 3-4 Single Phase 3 x 0.37kW Variable Speed Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Regional council pool amenities and seasonal splash parks maintain line feeds with the Hydro Multi-E 3 CRNE 3-4. Configured with three CRNE 3-4 vertical pumps in parallel, the booster dynamically matches motor speed to immediate water requirements. Specify part number 99752115 and the complete factory-tested package arrives ready for connection.
The package easily meets peak water requirements up to 270 L/min. To pressurise elevated upper levels, the pumps develop up to 37 metres of head. Integrated Multi-Master intelligence coordinates the pumps without requiring an external control panel, ensuring automatic role swapping and uninterrupted pressure stabilization.
Mechanically secured on a shared base frame, the set includes 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 7.17 A (3 x 2.39 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 set delivers uncompromised clean-water performance for mixed-use commercial buildings, corporate office towers and shopping centres, handling tough daily use. Variable-speed motor modulation makes the set a practical clean-water pressure-boosting solution for both new plant rooms and system upgrades.
FEATURES
- The system protects its pumps against dry running if the incoming supply is lost.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- Each pump is driven by IE5 permanent magnet motors with frequency-controlled speed matching demand.
- Rated 0.37 kW (P2) on every main pump in the frame.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a smartphone.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
- Power use precisely tracks demand, avoiding the waste of fixed-speed alternates.
- Stainless steel manifolds provide two Rp 2 inch threaded manifold connections ready for plant pipework.
- Three Grundfos CRNE 3-4 vertical multistage pumps run in parallel on one common base frame.
- Both constant-pressure and proportional-pressure modes are available, so plant rooms can tune response to pipework.
- Pump staging follows demand automatically: pumps enter at low speed as pressure drops, ramp to equal speed, and exit as flow fades.
- Maximum operating pressure of 10 bar with motors sealed to IP55.
What's Included
- 3 x Grundfos CRNE 3-4 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 | 270 L/Min |
| Max Head | 37 m |
| Power | 3 x 0.37 kW / 240v |
| Rated Current | 3 x 2.39 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.
Under peak consumption conditions, what water volume does this packaged booster set deliver?
Peak water displacement for the Grundfos Hydro Multi-E 3 CRNE 3-4 U8 A-A-I-I-DU (part number 99752115) reaches up to 270 L/min to satisfy elevated site requirements.
How are the parallel centrifugal pumps powered and speed regulated across variable flow demands?
Speed-controlled electric drive on the Hydro Multi-E 3 CRNE 3-4 delivers power through three IE5 permanent-magnet MGE electric motors rated at 0.37 kW each on 1 x 200-240 V mains.
How much total dynamic elevation head does this parallel centrifugal booster assembly deliver?
Pressure boosting performance allows the Hydro-Multi-E-3-CRNE-3-4 to achieve up to 37 m dynamic elevation head and an 10 bar working envelope.
Which manifold connection sizes and isolation valves are supplied on this packaged booster skid?
Common manifolding across the Hydro Multi E 3 CRNE 3 4 utilizes R 2 stainless steel suction and discharge pipework with integrated non-return valves and isolating ball valves.
What factory warranty period and support terms cover this multi-pump booster unit?
Warranty support for the 3 CRNE 3-4 (Hydro Multi-E) is delivered through an authentic Grundfos two-year manufacturer warranty covering the complete factory-assembled booster skid.
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