High-efficiency circulation pump WITA Delta HE light 40-25-130
Code: DHEL0005HWProduct detailed description
WITA Delta HE light 40-25-130 is a high-efficiency circulation pump driven by an EC motor with permanent magnets. According to the model designation, it is a version with a DN 25 connection and an installation length of 130 mm. The first number (40) corresponds to a maximum head of 4.0 m according to the technical data. Energy consumption ranges from 3 to 23 W, and the pump electronics allow you to choose one of eight characteristics.
According to the manufacturer, standard pumps in an average household account for 10 to 15% of electricity consumption. The high-efficiency WITA pumps can reduce this consumption by approximately 80% compared to a standard circulation pump, while the hydraulic performance can remain almost the same.
Special Features
- highest efficiency due to EC technology with permanent magnets in the motor
- minimum power consumption starting at 3 W
- navigation in the menu with one touch
- predefined regulation modes: constant speed and variable differential pressure
- Anti-block function to prevent pump blockage
- integrated motor protection
- high safety at startup
- mounting on the pipe using a key
Construction and Materials
Manufacturer WITA processes cast fittings with a cathodic coating and chrome-nickel steel. According to their statement, these are proven materials with high durability and versatile use. With an installation length of 130 mm, the pump body is made of grey iron with a cathodic coating, while the brass body is available only in the 110 mm length variant. Thermal insulation jackets, gaskets, connecting plugs or permanently installed cables are delivered with the pumps.
How the Pump is Regulated
The pump offers two predefined regulation modes: constant speed and variable differential pressure. In total, eight characteristics are available, four constant and four proportional, and they can be selected with one touch. Variable differential pressure reduces the pumping head when the flow decreases, thus saving energy.
Technical Data
| Type | WITA Delta HE light 40-25-130 |
| Installation length of this type | 130 mm |
| Max. pump head | 4.0 m |
| Max. flow rate | 2 800 l/h |
| Energy consumption | 3 - 23 W |
| Control | 4 constant characteristics, 4 proportional characteristics |
| Supply voltage | 1 x 230 V, 50 Hz |
| Motor protection | external motor protection is not required |
| Protection class | IP 42 |
| Ambient temperature | 0 °C to +40 °C |
| Medium temperature | +5 °C to +110 °C |
| Temperature class | TF 110 according to CEN 335-2-51 |
| Max. system pressure | 10 bar |
| Connection sizes in the range | DN 15, DN 20, DN 25, DN 32 |
| Installation lengths in the range | 110 mm, 130 mm, 180 mm |
| Weight including insulation | 2.5 kg |
| EEI | ≤ 0.18 |
Application
The circulation pump maintains medium flow in a closed circuit. It operates at a medium temperature from +5 °C to +110 °C and at a maximum system pressure of 10 bar. The ambient temperature can range from 0 °C to +40 °C.
Installation
When replacing an older pump, it is important that the installation length (130 mm for this model) and the connection size match. The pump is mounted on the pipe using a key. Follow the direction of flow and the installation position according to the manufacturer's instructions.
Frequently Asked Questions
What is the installation length of the 40-25-130 pump?
The last number in the model designation indicates the installation length, i.e., 130 mm.
What power does the pump consume?
Energy consumption ranges from 3 to 23 W, with a minimum power consumption starting at 3 W.
Is it necessary to connect motor protection to the pump?
No, motor protection is integrated into the pump and external protection is not required.
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