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SKU: 99752156
Grundfos Hydro Multi-E 3 x CRNE 3-8 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
Suburban medical precinct clinics requiring zero-downtime water security install the Hydro Multi-E 3 CRNE 3-8. Integrated variable-speed drives coordinate the three CRNE 3-8 pumps in parallel, seamlessly ramping output as fixtures open. Everything is ordered under the single manufacturer part number 99752156.
System delivery expands up to 270 L/min as commercial draw escalates. The vertical stage assembly can build up to 74 metres of head for steep elevations. 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.
Built on an engineered vibration-dampened frame, the assembly 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.
Regular application targets cover high-rise apartments, hotel plant rooms and schools and universities, where multiple outlets open simultaneously. Variable-speed motor modulation makes the set a practical clean-water pressure-boosting solution for both new plant rooms and system upgrades.
FEATURES
- Maximum operating pressure of 10 bar with motors sealed to IP55.
- Slow-speed duty and staged switching keep consumption down through low-demand hours.
- Stainless steel manifolds provide two Rp 2 inch threaded manifold connections ready for plant pipework.
- Frequency converters on the motors pair with IE5 permanent magnet motors for efficient part-load operation.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- Dry-running protection is built into the control, protecting the pumps if the suction supply is interrupted.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- Constant pressure control holds the delivered pressure flat while proportional mode lets setpoints flex with demand.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
- Pumps are cut in and out according to demand, every running unit turning at the same speed to hold the pressure set point.
- At P2 each main pump is 0.75 kW, covering the duty without oversizing the frame.
- Three Grundfos CRNE 3-8 pumps share the boosting work in parallel.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a smartphone.
What's Included
- 3 x Grundfos CRNE 3-8 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 | 74 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.
What total dynamic head and system working pressure does this packaged booster assembly deliver?
Peak vertical head generated by the Grundfos Hydro Multi-E 3 CRNE 3-8 U8 A-A-I-I-DU (part number 99752156) reaches up to 74 m across distribution pipework under an 10 bar pressure envelope.
What manifold port sizing and plumbing hardware connects the centrifugal pumps on this skid?
Parallel skid pipework on the Hydro Multi-E 3 CRNE 3-8 features R 2 stainless steel suction and discharge headers fitted with isolating valves and discharge non-return valves.
Under what manufacturer warranty terms is this packaged booster set backed?
Factory warranty backing on the Hydro-Multi-E-3-CRNE-3-8 provides an authentic Grundfos two-year manufacturer warranty protecting the complete parallel booster skid assembly.
What maximum water flow can this packaged multi-pump assembly supply during peak consumption hours?
At full operational capacity, the Hydro Multi E 3 CRNE 3 8 supplies up to 270 L/min total liquid throughput into pressurised pipework.
How is mechanical drive power and electronic speed control configured on this booster unit?
Integrated frequency converters on the 3 CRNE 3-8 (Hydro Multi-E) modulate three IE5 permanent-magnet MGE electric motors rated at 0.75 kW each from a 1 x 200-240 V power supply.
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