Lowara Ecocirc L 25-8/130 - Variable Speed Circulator Pump

Description

The Lowara ecocirc cast iron range brings high-efficiency variable speed circulation to sealed central heating, air conditioning and underfloor heating systems, built on the same proven 130 mm port-to-port platform across both models covered on this page: the ecocirc M 25-6/130 (6 m head) and the ecocirc L 25-8/130 (8 m head). Both use an electronically commutated (ECM) permanent magnet motor that continuously adapts speed to real system demand, cutting running costs well below a fixed-speed circulator while keeping the same compact cast iron footprint, control knob and connection size — so the right model is simply a case of matching the head your system needs. As sealed-system circulators, these are intended for closed heating and cooling loops rather than direct potable water or domestic hot water circuits.

6 / 8 m

Max Head (M / L)

Up to 4.5 m³/h

Max Flow Rate

≤0.17 / ≤0.18

EEI (M / L)

130 mm

Port-to-Port

G 1½

Connection

10 bar

Max Pressure

Please Note: Cast iron body — sealed systems only

These cast iron models are built for closed heating and cooling circuits. Where a pump is needed for direct domestic hot water recirculation or an open/potable water circuit, use the stainless steel "N" version of the equivalent ecocirc model instead, as a cast iron body is not suited to that application and may corrode internally over time.

Good to Know: Choosing between the M and L models

Both models share the same 130 mm port-to-port length and G 1½ connection, so the choice comes down to head requirement. The M 25-6/130 (6 m max head) suits typical single-family homes and shorter pipe runs; the L 25-8/130 (8 m max head) is the right choice for larger properties, longer pipe runs, or systems with higher resistance such as multi-zone underfloor heating.

ECM permanent magnet motor

The electronically commutated motor continuously varies pump speed to match real-time system demand, delivering significantly lower running costs than a traditional fixed-speed circulator across both models on this page.

Three selectable control modes

A single "one-turn" control knob switches between proportional pressure, constant pressure and fixed speed modes, so the control strategy can be matched to the system — proportional pressure for TRV-fitted radiator circuits, constant speed for simpler single-zone setups.

Automatic air purge

A built-in automatic air-purge cycle clears trapped air from the pump body during commissioning, reducing noisy running and callbacks without manual bleeding of the pump head.

Multicolour LED status indicator

The multicolour LED on the front of the pump gives an instant visual readout of operating status and fault conditions, helping installers diagnose issues at a glance.

Dry-run and overheat protection

Dry-run protection automatically shuts the pump down if it loses its water supply, with thermal protection cutting out above approximately 125°C and restarting automatically once conditions normalise.

Insulation shell included as standard

Both models are supplied with a fitted insulation shell as standard, reducing heat loss on heating circuits and helping prevent condensation forming in cooling applications.

Model

MPN

Max Head

Max Flow Rate

Power Limit

EEI

ecocirc M 25-6/130

60B0L1011

6 m

Up to 3.2 m³/h

34 W

≤0.17

ecocirc L 25-8/130

60B0L1012

8 m

Up to 4.5 m³/h

60 W

≤0.18

General

Range

Lowara ecocirc (cast iron)

Models Covered

ecocirc M 25-6/130 (60B0L1011) and ecocirc L 25-8/130 (60B0L1012)

Pump Type

Wet-rotor variable speed circulator

Applications

Sealed heating systems, air conditioning/cooling circuits, underfloor heating, systems with thermostatic radiator valves

Manufacturer Warranty

2 years

Hydraulic Performance

Max Working Pressure

10 bar (PN10)

Fluid Temperature Range

-10°C to +110°C

Fluid Type

Non-freezing, non-condensing; max. 20% glycol/water mixture

Electrical

Power Supply

1 x 230 V, 50/60 Hz

Insulation Class

F (155°C)

IP Rating

IP44

Connections & Construction

Port-to-Port Length

130 mm

Connection Size

G 1½ (fits 1" / 25 mm pipework)

Pump Housing Material

Cast iron

Impeller Material

Composite

O-Rings

EPDM

Bearings

Ceramic

What's the difference between the M and L models?

The M 25-6/130 delivers up to 6 m of head and 3.2 m³/h flow, while the L 25-8/130 delivers up to 8 m of head and 4.5 m³/h flow. Both share the same 130 mm port-to-port length and connection size, so the choice depends on the head your system needs rather than the physical fit.

Can I use either of these for domestic hot water?

No — these are cast iron sealed-system circulators, intended for closed heating and cooling loops. For direct DHW recirculation or potable water applications, use the equivalent stainless steel "N" version instead.

What's the difference between the three control modes?

Proportional pressure mode reduces head as demand falls, suiting systems with thermostatic radiator valves. Constant pressure mode holds a fixed head regardless of demand. Fixed speed mode runs continuously at a set speed, similar to a traditional non-variable circulator.

Are these suitable for underfloor heating?

Yes — underfloor heating is listed among the ecocirc range's core applications, and the proportional pressure mode in particular suits the variable flow requirements typical of UFH manifolds and zoned systems.

Do these pumps need any ongoing maintenance?

The ecocirc range is designed to be largely maintenance-free once commissioned. The automatic air-purge function handles de-aeration during setup, and dry-run and overheat protection guard the pump automatically during operation.

BTU Calculator

BTU & WATT Calculator

Room Dimensions

Length (in m):

Width (in m):

Height (in m):

Room Type

Living Room

Bedroom

Kitchen

Bathroom

Conservatory

Hallway

Glazing Type

Single Glazed

Double Glazed

Triple Glazed

External Walls

0 Wall

1 Wall

2 Walls

3 Walls

4 Walls

Insulation Level

Poor

Average

Good (New Build)

Calculate

Required Heating

0

Watts

0

BTUs