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SKU: 99752121
Grundfos Hydro Multi-E 2 x CRNE 3-5 Single Phase 2 x 0.55kW Variable Speed Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
The Hydro Multi-E 2 CRNE 3-5 is a proven fit for cafe strips and small assemblies where a dishwasher cycle drops the street pressure, with two Grundfos CRNE 3-5 pumps staged automatically as demand varies. The complete system ships factory assembled and tested under part number 99752121.
It handles flows up to 166 L/min across the system. The pumps can develop up to 46 metres of head when pressure demand increases. Because every pump carries its own frequency converter and the Multi-Master software elects the controlling pump itself, losing a control unit or pressure sensor means seamless handover rather than a shutdown.
Factory assembled on a common base, the set combines stainless steel pipework, two 50 mm manifold connections, isolation and non-return valves, pressure sensors and a gauge, plus a 24L diaphragm tank. It connects to a 1 x 200-240 V supply at 50 / 60 Hz with a rated current of 6.68 A. Motors are protected to IP55, while maximum system pressure is 10 bar. Liquid-temperature suitability is 5°C to 60°C. Inlet pressure is rated to 10 bar.
Applications include schools and universities, mixed-use commercial buildings and high-rise apartments. The control flexibility suits clean-water boosting in new installations and upgrades.
Features
- The set ships with an 24L precharged diaphragm tank for low-flow stability.
- Stainless steel manifolds provide two 50 mm manifold connections ready for pipework.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- Two Grundfos CRNE 3-5 pumps share the boosting work in parallel.
- Each pump is driven by IE5 permanent magnet motors with frequency-controlled speed matching demand.
- Maximum operating pressure of 10 bar with motors sealed to IP55.
- Setup and monitoring run through the Grundfos GO app rather than a panel visit.
- Constant pressure control holds the delivered pressure flat while proportional mode lets setpoints flex with demand.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- Power use precisely tracks demand, avoiding the waste of fixed-speed alternates.
- Cascade logic brings pumps on-line and off-line against changing demand without manual intervention.
- Rated 0.55 kW (P2) on every main pump in the frame.
- Dry-running protection is built into the control, protecting the pumps if the suction supply is interrupted.
What's Included
- 2 x Grundfos CRNE 3-5 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 | 166 L/Min |
| Max Head | 46 m |
| Power | 2 x 0.55 kW / 240v |
| Rated Current | 2 x 6.68 Amps |
| Suitable For | Commercial Water Supply, Process and Food-Grade Duties |
| Body Material | Stainless Steel |
| Liquid Temperature | 5°C – 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?
Electronic speed regulation across the Grundfos Hydro Multi-E 2 CRNE 3-5 U8 A-A-I-I-DU is provided by two IE5 permanent-magnet MGE electric motors rated at 0.55 kW apiece on 1 x 200-240 V power, modulating motor rpm according to demand.
What vertical pumping head and maximum system pressure rating applies to this booster package?
Hydraulic elevation capability on the Hydro Multi-E 2 CRNE 3-5 generates up to 46 m total dynamic head while supporting a maximum operating pressure rating of 10 bar.
How are the suction and discharge manifolds configured for direct line connection and servicing?
Common manifolding across the Hydro-Multi-E-2-CRNE-3-5 utilizes R 2 stainless steel suction and discharge pipework with integrated non-return valves and isolating ball valves.
Under what factory warranty terms is this variable frequency booster package supplied?
Investment protection for the Hydro Multi E 2 CRNE 3 5 features a genuine Grundfos two-year manufacturer warranty supported by nationwide technical service and replacement components.
What peak water transfer capacity does this multi stage booster system provide for building services?
For high-demand distribution pipework, the 2 CRNE 3-5 (Hydro Multi-E) delivers a peak water displacement rate of 166 L/min across its parallel multistage pump assembly.
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