Grundfos circulator ALPHA SOLAR 25-145 180 cod.98989297
Grundfos circulator ALPHA SOLAR 25-145 180 cod.98989297
Useful to
- Heating in commercial buildings
- Home heating
- Industrial heating
ALPHA SOLAR is a circulator designed for thermal solar systems. It features three constant curve modes and the speed can also be controlled by a low voltage PWM signal from a solar controller.
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Grundfos circulator ALPHA SOLAR 25-145 180 cod.98989297
Product code 98989297
ALPHA SOLAR 25-145 180
The new ALPHA SOLAR is designed to be integrated into all types of solar thermal systems with variable (corresponding flow) or constant flow.
High efficiency ECM pumps (electronically commutated motor), such as ALPHA SOLAR, do not need to be speed regulated by a special external regulator that varies or pulses the supply voltage.
The speed can be controlled by a low voltage PWM (Pulse Width Modulation) signal from a solar controller to optimize the solar energy supply and system temperature.
As a result, the energy consumption of the pump will be reduced considerably.
If no PWM signal is available, ALPHA SOLAR can be set to a constant speed, and only be turned on and off by the controller.
Characteristics:
- Constant speed.
- PWM profile.
- PWM signal is a method of generating an analog signal using a digital source.
- Low EEI (energy efficiency index).
- Without maintenance.
- Low noise level.
- Very simple installation.
| TECHNIQUES | |
|---|---|
| Nominal flow rate | 2.77 m³/h |
| Prevalence | 12.46 m |
| Maximum prevalence | 145 dm |
| TF class | 110 |
| Approvals | CE, VDE, EAC |
| Model | B |
| MATERIALS | |
|---|---|
| Body Pump | Cast iron, EN 1561 EN-GJL-150, ASTM A48-150B |
| Impeller | Composite, PES 30% GF |
| INSTALLATION | |
|---|---|
| Ambient temperature limit | 2 .. 70 °C |
| Max operating pressure | 10 bars |
| Connection type | G |
| Attack size | 11/2 inch |
| Nominal pressure of the connection | PN10 |
| Wheelbase | 180mm |
| LIQUID | |
|---|---|
| Pumped liquid | Waterfall |
| Liquid temperature range | 2 .. 110 °C |
| Liquid temperature during operation | 60°C |
| Density | 983.2 kg/m³ |
| ELECTRICAL DATA | |
|---|---|
| Minimum absorbed power - P1: | 2W |
| P1 input power: | 60W |
| Network frequency | 50/60 Hz |
| Nominal tension | 1 x 230V |
| Maximum current consumption | 0.04 .. 0.58 A |
| Protection class (IEC 34-5) | X4D |
| Insulation class (IEC 85) | F |
| OTHER | |
|---|---|
| Energy (EEI) | 0.20 |
| Terminal block position | 9H |
| Net weight | 2.27kg |
| Gross weight | 2.46kg |
| Packaging volume | 0.004 m³ |
| Nation of origin | DK |
| Finnish | 4616000 |
| Agreement rate no. | 84137030 |
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