Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence

GRUNDFOS MQ

GRUNDFOS MQ THE COMPACT HOME WATER SUPPLY UNIT Easy to select Easy to install Easy to operate
www.grundfos.com www.grundfos.com/mq

V7164119 0302

THE COMPACT HOME WATER SUPPLY UNIT

TECHNICAL SPECIFICATIONS

Compact, all-in-one unit for your home water supply

Easy to select

The Grundfos MQ is a compact pump and pressure boosting unit specially designed for home water supply. It is a reliable and very easy-to-operate unit that can be tted almost anywhere. The pump is self-priming, which means that it is capable of drawing water from a well depth of down to 8 m. As the MQ has a built-in pressure tank, you do not need a space-consuming tank. The MQ pump is also ideal for boosting pressure from elevated or sub-terrain water storage tanks or from the water mains.

Excellent user benets

Easy to select Easy to operate

240 G1

Easy to install Self-priming down to a depth of 8 m Low noise Anti-cycling feature Dry-running protection Thermal protection Corrosion-free suitable for potable water User-friendly control panel Tough and reliable Space-saving no tank required

Unique user benets

The Grundfos MQ anti-cycling feature prevents the pump from continuously starting and stopping in the event of a dripping tap or minor leak in the system. The MQ pump has built-in dry-running protection. If for any reason water is not available, the pump automatically switches off. It will subsequently attempt to re-start every half hour for up to 24 hours until water is again available. The pump also has a built-in thermal protection. If it overheats, the pump will stop immediately. After a 30-minute cooling-down period, the pump will automatically restart.

190 570

114 218

Dimensions and weights

PUMP TYPE MQ 3-35 MQ 3-45 VOLTAGE 1 x 220-240 V 1 x 220-240 V In [A] 4.0 4.5 Istart [A] 11.7 11.7 P2 [W] Net weight [kg] 13.0 13.0

Easy to install

The Grundfos MQ pump is easy to install. The compact, horizontal design makes the pump easy to place even where space is limited. The outlet pipe connection can be angled up to 5 to t existing pipework. Due to the built-in pressure tank and integrated start/stop features there is no need for adjusting a separate pressure switch. The MQ is water-cooled and therefore has no noisy cooling fan. As it is self-priming, it is not necessary to allow free space around the pump for priming.

Pumped liquid

Potable water, rainwater or other thin, clean, non-aggressive and non-explosive liquids without solid particles or bres.
OPERATING CONDITIONS System pressure Inlet pressure Suction lift Liquid temperature Ambient temperature max. 7.5 bar max. 3 bar max. 8 m 0C to +35C 0C to +45C

Use anywhere

Private homes Holiday cottages Farms Greenhouses

Corrosion-free

The Grundfos MQ pump is built for longterm, trouble-free operation. It is made of weatherproof, corrosion-resistant materials and can, if necessary, be placed outdoors. A drain plug enables easy draining of the pump. This is especially convenient if the pump is installed in a front-risk location such as a holiday cottage. The MQ pump is suitable for rainwater and will not contaminate drinking water.
TECHNICAL DATA Enclosure class Insulation class Marking IP 54 B CE
Grundfos MQ Performance 50 Hz

p [kPa]

-40 -32

Easy to operate

Operation of the Grundfos MQ pump is simple and easy. Once installed it needs only a push on the On button to provide many years of reliable service. The actual settings are clearly indicated by indicator lights on the userfriendly control panel. The MQ pump has a small built-in pressure tank, sufcient to ensure that water is readily available from the tap. The pump starts automatically as soon as a tap is opened and no loss of pressure is felt.
User-friendly control panel
The Grundfos MQ features an easy-to-use control panel with indicator lights for indication of pump on auto-reset alarm (dry-running or overheating). In the event of dry-running, the pump will stop and afterwards attemp to restart automatically. Restarting can also be done manually. If required, the auto-reset function can be disabled.

ISO 9906 Annex A

HEAD [m] FLOW [m3/h] 0 0.6 1.2 1.8 2.4 MQ 3-12 MQ 3-15

3.0 3.6 4.0

0 0.0 0.0 0.4 0.8 0.2 1.2 0.4 1.6 2.0 0.6 2.4 2.8 0.8 3.2 3.6 1.0 4.0 4.4 1.2

Q [m/h] Q [l/s]

GRUNDFOS MQ
Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence
A universal water supply unit with unique features
9 Flexible discharge connection Easily accessible priming plug User-friendly control panel Dry-running protection indicator Built-in pressure tank Built-in non-return valve Easily accessible drain plug Stainless steel pump sleeve Thermal protection
GRUNDFOS MQ THE COMPACT DOMESTIC WATER SUPPLY UNIT Easy to select Easy to install Easy to operate

10 Low-noise operation

Easy to select

Easy to install

Easy to operate
www.grundfos.com www.grundfos.com/mq

USER-FRIENDLY OPERATION

TECHNICAL SPECIFICATIONS
Compact, all-in-one unit, designed for domestic water supply applications.
The Grundfos MQ is a compact pump and pressure boosting unit, purpose-designed for domestic water supply and other applications where a compact and reliable, easy-to-install pump is advantageous. The MQ is a self-priming, multistage centrifugal pump. It self-primes from a well depth of down to 8 m within a maximum of 5 minutes. The MQ pump is ideal for pressure boosting from water storage tanks or from the water mains (maximum 3 bar inlet pressure). The MQ pump is built for long-term, trouble-free operation. It is made of weatherproof, corrosion-resistant materials and can, if necessary, be placed outdoors. The pump is suitable for pumping rainwater.

Excellent user benets

Easy to select Easy to install Easy to operate Self-priming down to a depth of 8 m Low noise Anti-cycling feature Dry-running protection Thermal protection Corrosion-free suitable for potable water User-friendly control panel Tough and reliable Space-saving no tank required

Unique user benets

The Grundfos MQ is specially designed for use in domestic applications where low noise is a major consideration. The pump is cooled by the pumped water and there is no need for a noisy cooling fan. As the pump is self-cooling, it is not necessary to allow free space around the pump for cooling purposes. The MQ anti-cycling feature prevents the pump from continuously starting and stopping in the event of a dripping tap or minor leak in the system.

Material specication

Dimensions and weights

240 G1 320

The Grundfos MQ makes it easy to select the right solution. The MQ is an all-in-one unit with two versions to choose from. There is no need for a separate pressure tank, pressure switch, electrical connections, ttings or any other separate items.

Use anywhere

Private homes Holiday cottages Farms Greenhouses
With Grundfos MQ, it is literally a matter of plug and pump. Installation of the MQ pump is simple and can be done within minutes, which means greatly reduced installation costs. In addition, the outlet connection can be angled up to 5 to t existing pipework, and the compact, horizontal design makes the pump easy to place even where space is limited.
The Grundfos MQ pump has built-in dry-running protection. If dry-running is experienced, the pump stops automatically. It will subsequently attempt to restart every half hour for a maximum of 24 hours until water is again available from the source. If more than 24 hours lapse without water for pumping, the pump must be restarted manually. The autoreset function can be disabled, if for any reason this should be desirable. The MQ pump also has a built-in thermal protection. If the pump gets overheated it stops immediately. After a 30-minute cooling-down period, the pump will restart automatically. The MQ has easily accessible plugs for lling the pump with liquid before start and for drainage.

Protective features

190 570

114 218

Components
1 Composite suction port 2 Composite discharge port 3 Pressure tank with rubber diaphragm 4 Composite impeller 5 Composite chamber 6 Composite motor stool with base plate
PUMP TYPE MQ 3-35 MQ 3-45 VOLTAGE 1 x 220-240 V 1 x 220-240 V In [A] 4.0 4.5 Istart [A] 11.7 11.7 P2 [W] Net weight [kg] 13.0 13.0
Grundfos MQ Performance 50 Hz

p [kPa]

-40 -32
7 Stainless steel clamp 8 Motor with stainless steel cooling sleeve 9 Carbon/ceramics shaft seal
HEAD [m] FLOW [m3/h] 0 0.6 1.2 1.8 2.4 MQ 3-12 MQ 3-15

Pumped liquid

Potable water, rainwater or other thin, clean, non-aggressive and non-explosive liquids without solid particles or bres.
OPERATING CONDITIONS System pressure Inlet pressure Suction lift Liquid temperature Ambient temperature max. 7.5 bar max. 3 bar max. 8 m 0C to +35C 0C to +45C
Operating the Grundfos MQ pump is simple and easy. The actual settings are clearly indicated by diodes on the userfriendly control panel. The MQ pump has a small built-in pressure tank, sufcient to ensure that water is readily available from the tap. When water is required, the pump starts automatically. A non-return valve prevents back-ow.

ISO 9906 Annex A

10 Composite non-return valve 11 Stainless steel shaft 12 Composite self-priming valve 13 Pressure switch 14 Flow sensor 15 Composite self-priming part 16 Composite drain plug 17 Composite priming plug 18 Stainless steel pump sleeve Rubber O-rings
TECHNICAL DATA Enclosure class Insulation class Marking IP 54 B CE

3.0 3.6 4.0

0 0.0 0.0 0.4 0.8 0.2 1.2 0.4 1.6 2.0 0.6 2.4 2.8 0.8 3.2 3.6 1.0 4.0 4.4 1.2

Q [m/h] Q [l/s]