The WITA® high-efficiency circulating pumps are characterized by a high quality “Made in Germany”. By using high-grade materials, our products are designed for a long service life. Because of our own production in the Bad Oeynhausen (Germany), we can ensure efficient structures, our quality standards, the requirements of craftsmanship and fair prices.
As a material, WITA® processes cataphoresis-coated armature castings and chromium-nickel steel. These proven materials guarantee high resistance and a versatile range of applications. All circulating pumps are supplied with heat insulation shells, seals, coupling plugs or permanently installed cables.
In an average household, 10 to 15% of the electricity consumption is caused by conventional standard pumps. Through the use of the WITA® high efficiency pumps the energy consumption can be compared to a conventional circulation pump. Approximately 80%.
The hydraulic power could be almost kept the same compared to standard pumps.
Special features / Product advantages
Additional to the nine different power curves which can also be selected for the Delta MIDI without a PWM module, the PWM version has two PWM stages. In these stages, the pump can be controlled with an external speed control. If the external control signal fails, is it possible to switch on an emergency operating stage. There is a rotary control in the pump, which can be used to set an arbitrary characteristic curve in the power range of the pump. You can download the Delta MIDI manual in our download area to learn more about the PWM function. The PWM control signal is also described in detail here.
|Max. pump lift||4,0 m|
|Max. flow rate||2.800 l/h|
|Power consumption||3 – 23 W|
|Control||4 constant characteristics, 4 proportional characteristics, minimum operating level, externaly controllable PWM characteristics|
|Supply voltage||1 x 230V, 50 Hz|
|Motor protection||No external motor protection required|
|Ip rating||IP 42|
|Ambient temperature||0 °C to +40 °C|
|Media temperature||+5 °C to +110 °C|
|Temperature class||TF 110 as per CEN 335-2-51|
|Max. system pressure||10 bar|
|Connection size||DN 15, DN 20, DN 25, DN 32|
|Installation lengths||110 mm, 130 mm, 180 mm|
|Pump housing material||130 mm, 180 mm in variant in grey cast iron, cataphoresis coated;110 mm in brass|
|Weight incl. insulation||2,5 kg|
|Special equipment||Speed control with PWM control signal possible, Venting program, Keylock|