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SKU: 99657284
Grundfos Hydro Multi-E 3 x CRE 5-7 Three Phase 3 x 1.1kW Variable Speed Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Where showers, coffee machines and dishwashers competing for one limited mains feed are served from a single booster, the Hydro Multi-E 3 CRE 5-7 holds pressure steady as three CRE 5-7 pumps respond to changing flow. Everything is ordered under the single part number 99657284.
It handles flows up to 430 L/min across the system. The pumps can develop up to 68 metres of head when pressure demand increases. 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.
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 3 x 380-415 V supply at 50 / 60 Hz with a rated current of 7.11 A. Motors are protected to IP54, while maximum system pressure is 10 bar. Liquid-temperature suitability is 5°C to 60°C. Inlet pressure is rated to 10 bar.
Expect it on mixed-use commercial buildings and hotel plant rooms sites, plus schools and universities duties. It provides clean-water pressure boosting for both new plant rooms and refits.
Features
- The system pairs three CRE 5-7 pumps in parallel duty, controlled as a single coordinated system.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a phone.
- Both constant-pressure and proportional-pressure modes are available, so plant rooms can tune response to pipework.
- Slow-speed duty and staged switching keep consumption down through low-demand hours.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
- The package is wet-tested and pre-configured, requiring only pipework and power on site.
- The stainless steel manifold assembly is supplied with two 50 mm manifold connections.
- 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 IP54.
- Each pump is driven by IE5 permanent magnet motors with frequency-controlled speed matching demand.
- Pumps are cut in and out according to demand, every running unit turning at the same speed to hold the pressure set point.
- Dry-running protection is built into the control, protecting the pumps if the suction supply is interrupted.
- At P2 each main pump is 1.1 kW, covering the duty without oversizing the frame.
What's Included
- 3 x Grundfos CRE 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 | 430 L/Min |
| Max Head | 68 m |
| Power | 3 x 1.1 kW / 415v |
| Rated Current | 3 x 7.11 Amps |
| Suitable For | Commercial Water Supply, Pressure Boosting |
| Body Material | Cast Iron |
| 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.
Under full operational pressure, what dynamic head does this parallel booster assembly deliver?
Under peak line requirements, the Grundfos Hydro Multi-E 3 CRE 5-7 U2 A-A-I-I-DU delivers a maximum vertical head of 68 m and accommodates working system pressures up to 10 bar.
Which pipework connection sizing and manifold valves are integrated across this booster unit?
Factory pipework configuration on the Hydro Multi-E 3 CRE 5-7 incorporates R 2 stainless steel manifolds, complete with individual pump isolating valves and line non-return valves.
What warranty coverage and service provisions back this multi pump booster unit?
Factory backing for the Hydro-Multi-E-3-CRE-5-7 includes an authentic Grundfos two-year manufacturer warranty covering the pumps, drive electronics, and skid assembly.
Which maximum flow rate does this variable speed booster assembly deliver into pressurised mains?
At full operational capacity, the Hydro Multi E 3 CRE 5 7 provides up to 430 L/min total water throughput to satisfy heavy facility consumption requirements.
What electrical motor power package drives each centrifugal stage in this booster system?
Power for the 3 CRE 5-7 (Hydro Multi-E) is delivered via three high-efficiency IE5 permanent-magnet MGE electric motors of 1.1 kW each, wired for a 3 x 380-415 V electrical supply with built-in speed regulation.
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