Electronic circulation pump DAB.EVOSTA2 40-70/130 1/2" for heating and air conditioning systems

Product detailed description

DAB.EVOSTA2 40-70/130 1/2" is an electronic circulation pump for hydronic heating and air conditioning circuits. A synchronous motor with a permanent magnet and a frequency converter allow it to monitor pressure changes in the system and adjust performance accordingly, keeping electricity consumption low.

Suitable for replacement as well

With a construction length of 130 mm and connection matching older three-speed pumps, for example the VA series, the EVOSTA2 is also suitable as a replacement for them. One model covers a delivery head of 4, 5 and 6 m, which previously required different pumps.

Control

• one MODE button on the front panel, three LEDs indicate the selected setting
• 9 settings: proportional pressure PP1–PP3, constant pressure CP1–CP3 and constant speed I–III
• the air vent cap also serves to manually release the shaft

Construction

• cast iron body with cathodic surface treatment, motor housing made of stainless steel
• impeller made of technopolymer, ceramic shaft supported by graphite bearings lubricated by the pumped liquid
• waterproof electronics with IPX5 protection, insulation class F
• built-in protection against overload, overheating, overvoltage and undervoltage, external motor protection is not required
• cast iron pump body with G 1" (DN 15) thread, 1/2" flange connection

Operating conditions

The pump transports clean, chemically neutral liquid without solid particles and mineral oils with properties similar to water, with a glycol content of up to 30%. The liquid temperature can range from −10 to +110 °C, operating pressure from 1 to 10 bar and ambient temperature up to 40 °C. It must be mounted with the motor shaft in a horizontal position, the direction of flow is indicated by an arrow on the body.

The power supply is single-phase 1 × 230 V, 50/60 Hz. Electrical connections should be made by a qualified professional. The pump meets the requirements of the ErP 2009/125/ES directive.

Technical parameters

Frequently asked questions

Can I replace an old three-speed circulation pump with this pump?
Yes, the EVOSTA2 40-70/130 1/2" has a construction length of 130 mm and a connection matching common older pumps, for example the VA series. One model covers a delivery head of 4, 5 and 6 m.

What control modes does the pump offer?
Using the MODE button, you can choose from 9 settings: proportional pressure PP1–PP3, constant pressure CP1–CP3 and constant speed I–III. The selected setting is indicated by three LEDs on the panel.

What connection does the 1/2" version have?
The pump body has a G 1" (DN 15) thread and is connected to the pipe by a 1/2" flange. The construction length is 130 mm.

Is the pump suitable for use with an antifreeze mixture?
Yes, the pumped liquid can contain up to 30% glycol. It must be clean, without solid particles and mineral oils, with a temperature from −10 to +110 °C.