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SKU: 99752367
Grundfos Hydro Multi-E 2 x CRNE 20-4 Three Phase 2 x 5.5kW Variable Speed 304ss Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
In mixed-use buildings where a single booster covers retail, offices and apartments, the simultaneous demand of the morning peak places heavy loads on the supply; the Hydro Multi-E 2 CRNE 20-4 answers with two CRNE 20-4 pumps operating in parallel. Specify part number 99752367 and the whole set lands tested, assembled and ready for pipework.
Flow capacity reaches 1068 L/min. Up to 82 metres of head is available to maintain pressure as demand changes. There is no separate central controller to purchase: Multi-Master control resides within the pumps, either unit can assume the controlling role, and a fault is handed over cleanly without interrupting supply.
For installation, the booster is supplied pre-assembled with stainless steel manifolds, two 80 mm manifold connections, isolation valves, non-return valves, pressure sensors and a gauge, plus a 24L diaphragm tank. It is designed for 3 x 380-415 V power at 50 / 60 Hz with a rated current of 21.9 A, with IP55 motor protection and a 10 bar maximum system pressure. Liquid-temperature suitability is 5°C to 60°C. Inlet pressure is rated to 10 bar.
Expect it on high-rise apartments and hospitals sites, plus hotel plant rooms duties. It provides clean-water pressure boosting for both new plant rooms and refits.
Features
- Variable speed comes from frequency converters matched to IE5 permanent magnet motors, keeping the booster set in its efficient range.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- The set ships with an 24L precharged diaphragm tank for low-flow stability.
- Rated 5.5 kW (P2) on every main pump in the frame.
- Power use precisely tracks demand, avoiding the waste of fixed-speed alternates.
- Pumps are cut in and out according to demand, every running unit turning at the same speed to hold the pressure set point.
- Setup and monitoring run through the Grundfos GO app rather than a panel visit.
- Maximum operating pressure of 10 bar with motors sealed to IP55.
- No external controller required: Multi-Master redundancy lets either pump assume the controlling role.
- Two Grundfos CRNE 20-4 pumps share the boosting work in parallel.
- Dry-running protection is built into the control, protecting the pumps if the suction supply is interrupted.
- Constant pressure control holds the delivered pressure flat while proportional mode lets setpoints flex with demand.
- The stainless steel manifold assembly is supplied with two 80 mm manifold connections.
What's Included
- 2 x Grundfos CRNE 20-4 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 | 1068 L/Min |
| Max Head | 82 m |
| Power | 2 x 5.5 kW / 415v |
| Rated Current | 2 x 21.9 Amps |
| Suitable For | Commercial Water Supply, Process and Food-Grade Duties |
| Body Material | Stainless Steel |
| Liquid Temperature | 5°C – 60°C |
| Inlet Size | 80 mm |
| Outlet Size | 80 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 variable frequency electric motors provide mechanical power to this booster assembly?
Electronic speed regulation across the Grundfos Hydro Multi-E 2 CRNE 20-4 U2 A-A-I-I-DU is provided by two IE5 permanent-magnet MGE electric motors rated at 5.5 kW apiece on 3 x 380-415 V power, modulating motor rpm according to demand.
What maximum head pressure does this variable speed booster system produce across the pipework?
Hydraulic elevation capability on the Hydro Multi-E 2 CRNE 20-4 generates up to 82 m total dynamic head while supporting a maximum operating pressure rating of 10 bar.
What plumbing manifold connections and valve equipment are factory mounted on this assembly?
Common manifolding across the Hydro-Multi-E-2-CRNE-20-4 utilizes DN 80 stainless steel suction and discharge pipework with integrated non-return valves and isolating ball valves.
Which manufacturer warranty terms protect this packaged variable frequency booster set?
Investment protection for the Hydro Multi E 2 CRNE 20 4 features a genuine Grundfos two-year manufacturer warranty supported by nationwide technical service and replacement components.
How much discharge water volume can this parallel booster assembly supply during peak periods?
For high-demand distribution pipework, the 2 CRNE 20-4 (Hydro Multi-E) delivers a peak water displacement rate of 1068 L/min across its parallel multistage pump assembly.
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