Grundfos ALPHA SOLAR 25-145 Handleiding

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GRUNDFOS DATA SHEET

New ALPHA SOLAR

Product description

The new ALPHA SOLAR is designed

to be integrated in all kinds of thermal

solar systems with either variable

(matched-flow) or constant flow rate.

High-efficiency ECM (Electronically

Commutated Motor) pumps, such as

ALPHA SOLAR, must not be speed-controlled by an

external speed controller varying or pulsing the supply

voltage.

The speed can be controlled by a low-voltage PWM

(Pulse Width Modulation) signal from a solar controller

to optimise the solar harvesting and temperature of the

system. As a result, the power consumption of the

pump will be reduced considerably.

If no PWM signal is available, ALPHA SOLAR can be

set to constant speed, only switched on and off by the

controller.

PWM input profile C (solar)

Features

•Constant speed.

•PWM C profile. The PWM signal is a method for

generating an analog signal using a digital source.

•Low EEI (Energy Efficiency Index).

•Maintenance-free.

•Low noise level.

•Very simple installation.

Technical data

Replacement table

TM06 5816 0216TM05 1575 3211

Max.

PWM input signal [%]

Speed

System pressureMaximum 1.0 MPa (10 bar)

Minimum inlet pressure

0.05 MPa (0.50 bar) at 95 °C liquid

temperature

Maximum liquid

temperature

2-110 °C at 70 °C ambient temperature

2-130 °C at 60 °C ambient temperature

Enclosure classIPX4D

Motor protectionNo external protection needed

Approval and markingVDE, CE

Water/propylene glycol

mixture

Maximum water/propylene glycol

mixture is 50 %.

Note: The water/propylene glycol

mixture reduces the performance due to

higher viscosity.

Old existing productsReplaced by

52588352SOLAR 25-12098989297ALPHA SOLAR 25-145 180

59508500SOLAR 15-8098989298ALPHA SOLAR 15-75 130

59544183SOLAR 25-4098989300ALPHA SOLAR 25-75 180

59546639SOLAR 25-6098989300ALPHA SOLAR 25-75 180

96705819SOLAR 15-6098989298ALPHA SOLAR 15-75 130

96817649SOLAR 15-6598989298ALPHA SOLAR 15-75 130

96817652SOLAR 25-6598989299ALPHA SOLAR 25-75 130

96817707SOLAR 25-6598989300ALPHA SOLAR 25-75 180

96817710SOLAR 15-4598989298ALPHA SOLAR 15-75 130

96817722SOLAR 25-4598989299ALPHA SOLAR 25-75 130

96817725SOLAR 25-4598989300ALPHA SOLAR 25-75 180

Product specificaties