Grundfos MAGNA1 D 32-100 99221241

Name: Grundfos MAGNA1 D 32-100 180mm Twin-Head Circulator Pump 99221241
Brand: Grundfos
SKU: 99221241
Price: 1492.42 GBP
Availability: InStock

Grundfos MAGNA1 D 32-100 180mm Twin-Head Circulator Pump 99221241 - Image 2

Grundfos MAGNA1 D 32-100 180mm Twin-Head Circulator Pump 99221241 - Image 3

Grundfos MAGNA1 D 32-100 180mm Twin-Head Circulator Pump 99221241 - Image 4

In stock

Any questions? Message us on WhatsApp

Established 1975
Trusted by thousands of customers

The Grundfos MAGNA1 D 32-100 (part no. 99221241) is a twin-head, cast iron, screwed (union) circulator pump for heating, cooling and ground-source systems. It gives up to 10 m head, has a 180 mm port-to-port length and runs on a single-phase 230 V supply.

MAGNA1 offers nine settings across proportional pressure, constant pressure and constant curve, plus a fault relay and external start/stop input for BMS connection. Set-up and readout with the Grundfos GO app.

10 m

Max head

180 mm

Port-to-port

G 2″

Union thread

175 W

Max power P1

Genuine Grundfos2-year warrantyPart no. 992212411 x 230 VEEI 0.22

Need AUTOADAPT, heat energy monitoring or fieldbus BMS communication? The equivalent MAGNA3 is the MAGNA3 D 32-100 (97924452).

Full Description

More about this product

Full Description

The Grundfos MAGNA1 D 32-100 180 1x230V PN10 (Grundfos part number 99221241) is a twin-head, cast iron, screwed (union) circulator pump from the Grundfos MAGNA1 range. It delivers up to 10 m head, fits a 180 mm port-to-port gap and connects with a G 2″ union thread. Power input is 8–175 W, so it uses only the energy the system needs at any moment.

10 m

Max head

180 mm

Port-to-port

G 2″

Connection

175 W

Max power P1

Need AUTOADAPT, heat energy monitoring or fieldbus BMS communication? The equivalent MAGNA3 is the MAGNA3 D 32-100 (97924452).

MAGNA1 D 32-100 specifications

Model	MAGNA1 D 32-100 180 1x230V PN10
Grundfos part number	99221241
Pump type	Twin-head, cast iron, screwed (union) circulator
Maximum head	10 m
Port-to-port length	180 mm
Pipe connection	G 2″ union thread
Pressure rating	PN10 (max. operating pressure 10 bar)
Supply	1 x 230 V
Power input P1 (per head)	8–175 W
Current (per head)	0.08–1.41 A
Energy Efficiency Index (EEI)	0.22
Liquid temperature	-10 to 110 °C
Pump housing	Cast iron
Impeller	PES 30%GF
Insulation class	F
Enclosure class	X4D
Net weight	11.1 kg
Warranty	2 years (Grundfos)

Figures from the Grundfos data sheet for 99221241. The pump curve is on the data sheet.

What the model code means

Code	Meaning
MAGNA1	MAGNA1: 9-setting control with fault relay and start/stop input
D	Twin-head pump (two heads in one housing)
32	Nominal pipe size DN32
100	Maximum head 10 m (code is in decimetres)
180	Port-to-port length 180 mm
1x230V	Single-phase 230 V supply
PN10	Pressure rating PN10

Features

Nine simple settings

Three control modes, proportional pressure (PP1–PP3), constant pressure (CP1–CP3) and constant curve (I–III), chosen at the push of a button.

Permanent-magnet motor

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

BMS relay and start/stop input

Potential-free fault relay (opens on a fault) and a digital input for external start/stop, so the pump links to a building management system or PLC.

Grundfos GO app

Set up and read the pump from the Grundfos GO app: infrared on single-head pumps, radio on twin-head pumps.

Straightforward replacement

Designed to replace Grundfos UPS and older MAGNA circulators in refurbishment work.

Low noise, long life

Wet-rotor (canned) design with no shaft seal to leak or wear. Quiet running in occupied buildings.

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 MAGNA1 D 32-100 mean?

MAGNA1 is the range, 32 is the nominal pipe size (DN32) and 100 is the maximum head in decimetres (10 m). D means twin-head.

Can it connect to a building management system?

Yes. It has a potential-free fault relay and a digital input for external start/stop, so it links to a BMS or PLC. For full fieldbus communication, choose MAGNA3 with a CIM module.

What is the difference between MAGNA1 and MAGNA3?

MAGNA1 has nine settings, a fault relay and a start/stop input for BMS connection. MAGNA3 adds AUTOADAPT, FLOWADAPT/FLOWLIMIT, built-in sensors, heat energy monitoring and fieldbus BMS communication through CIM modules. The equivalent MAGNA3 is the MAGNA3 D 32-100 (97924452).

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 the MAGNA1 D 32-100 fit where my old pump was?

Check the gap between your pipe flanges or unions. This pump is 180 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.

Downloads

data sheet PDF
Download
brochure 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 MAGNA1 D 32-100 180mm Twin-Head Circulator Pump 99221241. 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 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.