Grundfos UPM3 Circulating Pump - Flex & AUTO | MEP Stock

Grundfos UPM3 Circulating Pump

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Grundfos UPM3 Flex Pump 25-70 130
The FLEX AS control version supports external PWM profile A speed control from a compatible heating controller. Without a PWM signal, it runs on the selected maximum speed curve.

Grundfos UPM3 AUTO Pump 25-70 130
An internally controlled option with proportional-pressure, constant-pressure and constant-speed settings. Select and commission the appropriate setting for the heating circuit using the instructions supplied with the pump.

• Two Grundfos UPM3 options: Flex and AUTO, both in 25-70 130 format.
• 7m maximum head: select against the required flow and head duty.
• Compact 130mm installation length: measured from port to port.
• High-efficiency circulation: for compatible heating-water systems.
• Flex control: external PWM profile A or selected speed-curve operation.
• AUTO control: internal proportional-pressure, constant-pressure and constant-speed settings.
• Front operating controls: push-button selection and LED indicators.
• Threaded pump connections: G 1½ male connection threads.

Brand: Grundfos
Range: UPM3
Product type: Electronic heating circulation pump
Available options: Flex and AUTO
Model size: 25-70 130
Maximum head: 7m
Port-to-port length: 130mm
Nominal connection size: DN25
Pump connection threads: G 1½ male, BSP parallel
UK electrical supply: Single-phase 230V AC, 50Hz
Control: Depends on the selected Flex or AUTO option
Intended use: Heating-water circulation in compatible systems

• Compatible wet underfloor heating manifolds and pump assemblies.
• Compatible central heating circulation circuits.
• New installations, heating system refurbishment and maintenance.
• Replacement of existing circulators with matching dimensions, connections, controls and hydraulic performance.

Important: Select the correct Flex or AUTO control version for your system. Maximum head is measured at zero flow; check the required flow and head duty, connection threads, installation length and electrical controls before ordering. Follow the selected pump's rating plate and instructions for operating limits. Install with the motor shaft horizontal. Installation and electrical connection should be completed by a suitably qualified installer.

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