Grundfos ALPHA1 GO 15-60 130 Circulating Pump

The Grundfos ALPHA1 GO 15-60 130 circulator pump, reference 93074173, is a high-efficiency electronic circulator designed for water circulation in heating and air-conditioning systems. It offers a maximum head of 6 meters, a nominal flow rate of 2.28 m³/h, modulating electrical power from 4 to 45 W, G 1" threaded connections, and a compact installation length of 130 mm.

The ALPHA1 GO range is especially suited both for new installations and for the replacement of existing circulator pumps. It features proportional pressure control, constant pressure and constant curve modes, dry-run protection, self-venting function and robust startup. In addition, the Grundfos GO app helps the installer identify the replacement pump and the correct configuration.

Circulator pump with a maximum head of 6 meters

The Grundfos ALPHA1 GO 15-60 130 provides a maximum head of 6 m. The specific datasheet for this reference states a nominal flow rate of 2.28 m³/h and a nominal head of 3.06 m.

Its hydraulic curve allows higher flow rates under low circuit resistance conditions, while the actual operating point will depend on the pressure losses and the selected control mode.

Three control modes

The ALPHA1 GO incorporates electronic control to adapt the circulator operation to different types of installations.

• Proportional pressure: reduces or increases pressure according to flow demand, making it especially useful in radiator systems with thermostatic valves.
• Constant pressure: maintains a stable differential pressure even when flow varies, a setting especially suitable for underfloor heating systems and manifold circuits.
• Constant curve: allows the pump to operate following a fixed curve, similar to a conventional selectable-speed circulator.

Each control mode offers three adjustment levels, allowing the operating curve to be adapted to the hydraulic needs of the installation.

Suitable for radiators and underfloor heating

Thanks to its different control modes, the Grundfos ALPHA1 GO can be used in various heating and air-conditioning applications.

• Heating installations with radiators.
• Underfloor heating systems.
• Closed heating circuits.
• Compatible air-conditioning systems.
• Boiler circuits.
• Replacement of standalone circulators.
• Replacement of certain compatible integrated UPS pumps.

Designed to make circulator replacement easier

One of the main features of the ALPHA1 GO is its ability to facilitate the replacement of old circulator pumps.

Using the replacement function in the Grundfos GO app, the professional can search among thousands of existing circulator models and receive a recommendation for the appropriate pump and required configuration.

Grundfos indicates that the ALPHA1 GO is especially intended to replace standalone circulator pumps and different compatible integrated UPS models.

Advanced mode to replicate curves

When used as a replacement for a compatible pump, the ALPHA1 GO can be configured through its advanced mode to reproduce certain operating curves of the replaced circulator.

Grundfos GO provides the instructions and required setting, which is then selected directly from the pump’s front panel.

Unlike the ALPHA2 GO, the ALPHA1 GO does not have direct Bluetooth connection with the app. The app acts as a selection and assistance tool, while the final configuration is carried out on the unit itself.

Dry-run protection

The pump includes dry-run protection, designed to reduce the risk of damage when there is not enough liquid inside the circulator.

This function is especially useful during commissioning or in abnormal hydraulic circuit conditions.

Self-venting function

The ALPHA GO range includes a self-venting function that helps remove air present inside the pump.

This feature makes commissioning easier and helps reduce noise and circulation problems related to air around the impeller.

The pump’s self-venting function does not replace proper venting of the entire installation.

Robust startup

The Robust Startup function helps start the pump when the rotor encounters higher-than-normal resistance.

The motor applies high starting torque to try to overcome possible blockages, a feature especially useful after long periods of inactivity.

High-efficiency electronic motor

The ALPHA1 GO incorporates an electronically commutated motor and an integrated frequency converter, allowing speed and consumption to adapt to the circuit’s needs.

For reference 93074173, the absorbed electrical power ranges between:

• Minimum power: 4 W.
• Maximum power: 45 W.

The energy efficiency index EEI is 0.20, promoting lower consumption compared with traditional fixed-speed circulators.

Single-phase 220-240 V power supply

The Grundfos ALPHA1 GO 15-60 130 operates with a single-phase 220-240 V, 50/60 Hz power supply.

The absorbed current is approximately between 0.06 and 0.45 A, depending on the operating point.

The motor includes electronic thermal protection and has insulation class F.

Installation connector

The ALPHA GO range uses Grundfos’s electrical connection system designed to simplify the installation and replacement of circulators.

The pump is supplied with the corresponding installation connector, simplifying the connection of phase, neutral and earth during installation.

Compact installation length of 130 mm

The 130 designation of the model indicates a 130 mm distance between connections.

This compact format is especially useful in installations with limited space, boiler circuits and replacements where the existing circulator uses this mounting length.

G 1" threaded connections

Reference 93074173 features G 1" threaded connections according to ISO 228-1.

The 15 designation of the model identifies the nominal hydraulic passage diameter, while the pump’s external connections are one inch.

Before replacing an existing pump, both the connection diameter and the 130 mm installation length should be checked.

Maximum pressure of 10 bar

The pump is designed for a maximum operating pressure of 10 bar, with connections rated as PN 10.

The hydraulic circuit must remain within this pressure limit under all normal operating conditions.

Liquid temperature from -10 to 110 °C

The specific datasheet for the Grundfos 93074173 states a liquid temperature range of -10 to 110 °C.

The permitted ambient temperature during operation is between 0 and 55 °C.

The ability to operate over a wide temperature range makes it suitable for different closed heating and air-conditioning installations, provided the fluid and the other system components are compatible.

Cast iron hydraulic body

The pump housing is made of EN-GJL-150 cast iron, a material widely used in circulators for closed HVAC circuits.

The impeller is made of PES composite material reinforced with 30% glass fiber.

This cast-iron body version is intended mainly for closed heating and air-conditioning systems.

IP44 protection

The specific datasheet for reference 93074173 declares an IP44 protection rating.

The pump must be installed in accordance with the mounting position, environmental conditions and electrical requirements indicated by Grundfos.

Technical features of the Grundfos 93074173

• Brand: Grundfos.
• Range: ALPHA1 GO.
• Model: ALPHA1 GO 15-60 130.
• Reference: 93074173.
• Type: high-efficiency electronic circulator pump.
• Application: heating and air-conditioning.
• Nominal flow rate: 2.28 m³/h.
• Nominal head: 3.06 m.
• Maximum head: 6 m.
• Installation length: 130 mm.
• Connection type: threaded G.
• Connection size: G 1".
• Connection standard: ISO 228-1.
• Nominal pressure: PN 10.
• Maximum operating pressure: 10 bar.
• Liquid temperature: -10 to 110 °C.
• Ambient temperature: 0 to 55 °C.
• Power supply: 1 x 220-240 V.
• Frequency: 50/60 Hz.
• Minimum absorbed power: 4 W.
• Maximum absorbed power: 45 W.
• Absorbed current: 0.06-0.45 A.
• Energy efficiency index EEI: 0.20.
• Frequency converter: integrated.
• Thermal protection: electronic.
• Protection rating: IP44.
• Insulation class: F.
• Body material: EN-GJL-150 cast iron.
• Impeller material: PES + 30% glass fiber.
• Proportional pressure: yes.
• Constant pressure: yes.
• Constant curve: yes.
• Adjustment levels: 3 for each control mode.
• Advanced replacement mode: yes.
• Dry-run protection: yes.
• Self-venting function: yes.
• Robust startup: yes.
• Assistance via Grundfos GO: yes.
• Direct Bluetooth with Grundfos GO: no.
• Net weight: 1.74 kg.
• Gross weight: 1.92 kg.
• Approvals: CE and VDE.
• EAN: 5715467403992.

Compact circulator pump for heating and replacements

The Grundfos ALPHA1 GO 15-60 130 combines a maximum head of 6 meters with a compact 130 mm body, G 1" connection, electronic control and an absorbed power of only 4 to 45 W.

Its proportional pressure, constant pressure and constant curve modes make it suitable for radiator systems, underfloor heating and other closed circuits, while the self-venting, dry-run protection and robust startup functions help facilitate commissioning and daily operation.

In addition, Grundfos GO replacement assistance for circulator pumps makes it possible to identify the compatible pump and reproduce certain curves using advanced mode, making the ALPHA1 GO a particularly practical solution for both new installations and upgrading existing systems.