Grundfos Circulator ALPHA2 25-60 N 130 Cod. 99411287
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Grundfos Circulator ALPHA2 25-60 N 130 Cod. 99411287

Grundfos Circulator ALPHA2 25-60 N 130 Cod.99411287

Useful to:

  • Heating in commercial buildings
  • Home heating
  • Industrial heating

The ALPHA2 N model is a circulator designed for heating and air conditioning systems. AUTOADAPT continuously adapts the pump to the demands of the system to offer optimal comfort, low energy consumption and simple commissioning.

€776.22 VAT included €1,522.00 -49% €636.25 (VAT excl.)

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Description

Grundfos Circulator ALPHA2 25-60 N 130 Cod.99411287

ALPHA2 25-60 N 130

Product code 99411287

Grundfos ALPHA2 high-efficiency circulators are designed for the circulation of liquids in heating systems. The stainless steel variant of ALPHA2 is suitable for e.g. domestic hot water systems. With an Energy Efficiency Index (EEI) well below the ErP benchmark, it guarantees significant energy savings.

The AUTOADAPT function continuously adapts the pump performance to the actual heat demand, i.e. the size of the system and the changes in heat demand during the year. The AUTOADAPT function finds the setting that provides optimum comfort with minimum energy consumption and makes commissioning quick, safe and simple. ALPHA2 also offers proportional pressure, constant pressure and constant curve control modes.

With the automatic night setback function, the pump switches automatically from normal to night setback. Switching depends on the flow temperature controlled by the heater. In manual summer mode, the pump does not run but starts automatically at low speed to avoid rotor blockage, sticking valves and non-return valves.

Control modes and functions are selected using the buttons on the display. The LEDs indicate the operating status, the actual energy consumption in watts or the actual flow rate in m³/h as well as warnings and alarms.

Furthermore, ALPHA2 is compatible with the ALPHA Reader and the Grundfos GO Balance app, allowing installers to easily hydronic balance radiator and underfloor heating systems.

The design and selected materials of the pump contribute to the long service life. The pump is self-ventilating throughout the system, which contributes to easy commissioning. The compact design, featuring a pump head with an integrated control box, fits into the most common installations. Pump and motor form an integral unit without mechanical seal. The bearings are lubricated by the pumped liquid. These construction features ensure maintenance-free operation.

The active dry-running protection function protects the pump from running dry during startup and normal operation. In the event of a locked rotor, the pump will continuously try to restart with the maximum possible torque.

The cast iron pump housings are electrically coated to improve corrosion resistance. The motor is a compact stator/permanent magnet synchronous motor with high efficiency. The speed of the pump is controlled by an integrated frequency converter built into the control box.

Insulating shells are supplied with pumps to minimize heat loss in heating systems.

Data sheet
GRUNDFOS
99411287
New product
5713828677709
Specifications
TECHNIQUES
Nominal flow rate 1.94 m³/h
Prevalence 3.28m
Maximum head 60 dm
TF class 110
Approvals CE, VDE, EAC, RCM, SEPRO
Template And

MATERIALS
Body Pump Stainless steel, EN 1.4301, ASTM A351-CF8
Impeller Composite, PES 30% GF + PESU-GF20%

INSTALLATION
Ambient temperature limit 0 .. 40°C
Max operating pressure 10 bars
Connection type g
Attack size 11/2inch
Nominal pressure of the connection NP 10
Wheelbase 130mm

LIQUID
Pumped liquid Waterfall
Liquid temperature range 0 ..110 °C
Liquid temperature during operation 60°C
Density 983.2 kg/m³

ELECTRICAL DATA
Minimum absorbed power - P1 3W
P1 input power 34W
Network frequency 50 / 60Hz
Nominal tension 1 x 230V
Maximum current consumption 0.04 .. 0.32A
Protection class (IEC 34-5) X4D
Insulation class (IEC 85) f
Integrated motor protection IT IS NOT
Thermal protection ELECT

OTHER
Automatic night operation in reduced night-time consumption, included
Energy (EEI) 0.17
Terminal block location 6H
Net weight 2.04kg
Gross weight 2.2kg
Packing volume 0.004 m³
No Danish VVS 380463060
No Swedish RSK 5790514
Finnish 4615346
Norwegian NRF No 9043162
Country of origin DK extension
Convention rate n. 84137030
curves
file_1675157898.3072.png
DRAWINGS
file_1675157903.6357.png
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