Grundfos MAGNA3 D 40-120 F 97924465

Name: Grundfos MAGNA3 D 40-120 F 250mm Twin-Head Circulator Pump 97924465
Brand: Grundfos
SKU: 97924465
Price: 3802.8 GBP
Availability: InStock

Grundfos MAGNA3 D 40-120 F 250mm Twin-Head Circulator Pump 97924465 - Image 2

Grundfos MAGNA3 D 40-120 F 250mm Twin-Head Circulator Pump 97924465 - Image 3

Grundfos MAGNA3 D 40-120 F 250mm Twin-Head Circulator Pump 97924465 - Image 4

Grundfos MAGNA3 D 40-120 F 250mm Twin-Head Circulator Pump 97924465 - Image 5

Grundfos MAGNA3 D 40-120 F 250mm Twin-Head Circulator Pump 97924465 - Image 6

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Established 1975
Trusted by thousands of customers

The Grundfos MAGNA3 D 40-120 F (part no. 97924465) is a twin-head, cast iron, flanged circulator pump for heating, cooling and ground-source systems. It gives up to 12 m head, has a 250 mm port-to-port length and runs on a single-phase 230 V supply.

MAGNA3 adapts itself to the system with AUTOADAPT, measures flow and heat energy with built-in sensors, and connects to a BMS with an optional CIM module.

12 m

Max head

250 mm

Port-to-port

DN40

Flanged

439 W

Max power P1

Genuine Grundfos2-year warrantyPart no. 979244651 x 230 VEEI 0.18

Replacing a pump? Check the gap between your flanges: this model is 250 mm port-to-port.

Full Description

More about this product

Full Description

The Grundfos MAGNA3 D 40-120 F 250 1x230V PN6/10 (Grundfos part number 97924465) is a twin-head, cast iron, flanged circulator pump from the Grundfos MAGNA3 range. It delivers up to 12 m head, fits a 250 mm port-to-port gap and connects with a DN40 flange, PN6/10 combination. Power input is 16–439 W, so it uses only the energy the system needs at any moment.

12 m

Max head

250 mm

Port-to-port

DN40

Connection

439 W

Max power P1

Replacing a pump? Check the gap between your flanges: this model is 250 mm port-to-port.

MAGNA3 D 40-120 F specifications

Model	MAGNA3 D 40-120 F 250 1x230V PN6/10
Grundfos part number	97924465
Pump type	Twin-head, cast iron, flanged circulator
Maximum head	12 m
Port-to-port length	250 mm
Pipe connection	DN40 flange, PN6/10 combination
Pressure rating	PN6/10 (max. operating pressure 10 bar)
Supply	1 x 230 V
Power input P1 (per head)	16–439 W
Current (per head)	0.18–1.95 A
Energy Efficiency Index (EEI)	0.18
Liquid temperature	-10 to 110 °C
Pump housing	Cast iron EN-GJL-250
Impeller	PES 30%GF
Insulation class	F
Enclosure class	X4D
Net weight	31.3 kg
EAN	5710626495436
Warranty	2 years (Grundfos)

Figures from the Grundfos data sheet for 97924465. The pump curve is on the data sheet.

What the model code means

Code	Meaning
MAGNA3	MAGNA3: AUTOADAPT, built-in sensors, heat energy monitor and fieldbus BMS options
D	Twin-head pump (two heads in one housing)
40	Nominal pipe size DN40
120	Maximum head 12 m (code is in decimetres)
F	Flanged connections
250	Port-to-port length 250 mm
1x230V	Single-phase 230 V supply
PN6/10	Pressure rating: fits PN6 or PN10 counter-flanges

Features

AUTOADAPT control

Finds and keeps the best proportional-pressure setting for the system on its own, so the pump runs only as hard as the building needs.

FLOWADAPT and FLOWLIMIT

Set a maximum flow and the pump holds it, which can remove the need for a balancing valve on the pump circuit.

Built-in sensors

Integrated differential-pressure and temperature sensors measure the system directly, with no external sensor needed for standard control modes.

Heat energy monitor

Estimates flow and heat energy delivered, for monitoring and optimising the system (not for billing).

Grundfos GO and BMS ready

Set up and read the pump from the Grundfos GO app. Optional CIM modules connect it to common building-management fieldbus systems, and digital inputs, relay outputs and an analogue input are built in.

Permanent-magnet motor

High-efficiency PM motor with integrated frequency converter. No external motor protection needed and no routine maintenance.

Twin-head housing

Two pump heads in one housing give a built-in standby: if one head is out of service, the other keeps the system circulating.

Applications

Wet heating systems: radiators, underfloor heating and air-handling coils
Chilled water and air-conditioning circuits (liquid down to -10 °C)
Ground-source heat pump and solar heating circuits
Light commercial buildings and larger domestic systems

Questions about this pump

What does MAGNA3 D 40-120 F mean?

MAGNA3 is the range, 40 is the nominal pipe size (DN40) and 120 is the maximum head in decimetres (12 m). F means flanged. D means twin-head.

Can it connect to a building management system?

Yes. Fit an optional Grundfos CIM module in the control box to connect to common BMS fieldbus systems. Digital inputs, relay outputs and an analogue input are built in.

What is the difference between MAGNA1 and MAGNA3?

MAGNA3 adds AUTOADAPT, FLOWADAPT/FLOWLIMIT, built-in sensors, heat energy monitoring and fieldbus BMS communication through CIM modules. MAGNA1 has nine settings, a fault relay and a start/stop input. The equivalent MAGNA1 is the MAGNA1 D 40-120 F (99221310).

Why choose a twin-head pump?

Two pump heads share one housing, so the system keeps circulating if one head fails or is being serviced. It is common on commercial heating where loss of circulation is not acceptable.

Will it fit PN6 or PN10 flanges?

Both. The PN6/10 combination flange has bolt holes for PN6 and PN10 counter-flanges.

Will the MAGNA3 D 40-120 F fit where my old pump was?

Check the gap between your pipe flanges or unions. This pump is 250 mm port-to-port. If your old pump was longer, a spacer or adaptor may be needed. Send us the old pump’s nameplate and we will confirm the right replacement.

What warranty does it have?

A 2-year Grundfos manufacturer warranty.

Additional Information

Downloads

sales Sheet PDF
Download
data sheet PDF
Download

Delivery Information

Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.

Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).

Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.

Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.

Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.

Frequently Asked Questions

Quick answers to common questions about the Grundfos MAGNA3 D 40-120 F 250mm Twin-Head Circulator Pump 97924465. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.

What is the Grundfos MAGNA3 D 40-120 F used for?

The Grundfos MAGNA3 D 40-120 F is a twin-head circulator designed for heating, cooling and air-conditioning systems in commercial building applications.

What is the advantage of the MAGNA3 D twin-head design?

The twin-head configuration provides greater operational flexibility and can support systems where pump redundancy or alternating operation is required.

What control features are available on the MAGNA3 D 40-120 F?

The MAGNA3 range includes intelligent control functions such as AUTOADAPT and FLOWADAPT, allowing performance to be matched more efficiently to system demand.

What types of Grundfos pumps are available?

Grundfos offers circulators, booster pumps, borehole pumps, drainage pumps and other solutions for domestic and commercial systems.

How do I identify the correct Grundfos pump model?

Use the model name and product number on the pump nameplate, then check the electrical, hydraulic and connection specifications.

Can a Grundfos pump improve household water pressure?

A suitably selected Grundfos booster system can improve water pressure or flow, subject to the property’s water supply and installation requirements.