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SKU: 99752114
Grundfos Hydro Multi-E 2 x CRNE 3-4 Single Phase 2 x 0.37kW Variable Speed Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
For day spas and compact medical centres running half a dozen outlets at once, a factory-assembled Hydro Multi-E 2 CRNE 3-4 package provides a well-matched solution, with two CRNE 3-4 pumps staged against the demand curve. One factory-tested package replaces a shelf of loose components; order part number 99752114 to put it on site.
It handles flows up to 155 L/min across the system. The pumps can develop up to 36 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.
The two-pump package arrives as one base-mounted assembly with stainless steel manifolds, two 50 mm manifold connections, valves, sensors and a pressure gauge, plus a 24L diaphragm tank. Electrical supply is 1 x 200-240 V at 50 / 60 Hz with a rated current of 4.78 A. The motors have IP55 protection and the system is rated to 10 bar maximum pressure. Liquid-temperature suitability is 5°C to 60°C. Inlet pressure is rated to 10 bar.
Its home ground covers hospitals, hotel plant rooms and industrial process supply. The variable-speed system suits clean-water boosting duties with changing demand.
Features
- Each main pump is rated 0.37 kW (P2), so per-pump draw scales down as speed follows demand.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
- The system pairs two CRNE 3-4 pumps in parallel duty, controlled as a single coordinated system.
- Pump staging follows demand automatically: pumps enter at low speed as pressure drops, ramp to equal speed, and exit as flow fades.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- Energy draw matches the actual job because speed follows demand, not a fixed curve.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a phone.
- Constant pressure control holds the delivered pressure flat while proportional mode lets setpoints flex with demand.
- Dry-running protection is built into the control, protecting the pumps if the suction supply is interrupted.
- Rated for 10 bar system pressure; motors carry IP55 protection.
- Variable speed comes from frequency converters matched to IE5 permanent magnet motors, keeping the booster set in its efficient range.
- The stainless steel manifold assembly is supplied with two 50 mm manifold connections.
What's Included
- 2 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 | 155 L/Min |
| Max Head | 36 m |
| Power | 2 x 0.37 kW / 240v |
| Rated Current | 2 x 4.78 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.
How much water flow can this multi stage pump package discharge when all pumps are operational?
Operating across its factory curve, the Grundfos Hydro Multi-E 2 CRNE 3-4 U8 A-A-I-I-DU discharges up to 155 L/min of clean water to maintain consistent line pressure during peak demand cycles.
How is motor power and variable frequency regulation configured across this booster assembly?
Each centrifugal stage of the Hydro Multi-E 2 CRNE 3-4 is driven by a 0.37 kW IE5 permanent-magnet MGE electric motor running on 1 x 200-240 V power, utilizing built-in variable speed drives to adjust output dynamically.
Which vertical elevation head does this parallel multistage pump package achieve under full duty?
Elevating water across multi-level pipework, the Hydro-Multi-E-2-CRNE-3-4 maintains up to 36 m total dynamic head with an overall 10 bar maximum operating limit.
Which inlet and outlet connection dimensions are provided on the stainless steel manifolds?
Plumbed for rapid site installation, the Hydro Multi E 2 CRNE 3 4 includes R 2 stainless steel headers equipped with dedicated isolating valves, check valves, and pressure transmitters.
How is this packaged multi pump booster set supported under manufacturer warranty?
Grundfos provides two-year manufacturer warranty coverage on the 2 CRNE 3-4 (Hydro Multi-E), securing the complete multi-pump package, manifolds, and integrated electronics.
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