High-efficiency circulation pump WITA Delta HE light 40-25-180
Code: DHEL0001HWProduct detailed description
The WITA Delta HE light 40-25-180 is a high-efficiency circulation pump with a permanent magnet EC motor. It differs from the 40-25-130 model in the installation length: this version has 180 mm, which is the largest length available in the series (110 mm, 130 mm, and 180 mm). According to the model designation, it has a DN 25 connection. The first number (40) corresponds to a maximum head of 4.0 m.
Manufacturer WITA notes that in a typical household, standard pumps account for 10 to 15% of electricity consumption. By using high-efficiency WITA pumps, energy consumption can be reduced by approximately 80% compared to a standard circulation pump, while the hydraulic performance can remain almost unchanged.
Product Benefits
- high efficiency due to the EC motor with permanent magnets
- power consumption from 3 W
- menu is operated with a single touch
- pre-set regulation modes: constant speed and variable differential pressure
- Anti-block function
- built-in motor protection, external protection is not required
- high safety at start-up
- easy installation on the pipe thanks to key mounting
Body Material
With a length of 180 mm, the pump body is made of gray cast iron with a cathodic coating. The brass body is available only in the 110 mm length variant. Manufacturer WITA uses cast fittings with a cathodic coating and chrome-nickel steel in the series, which, according to the manufacturer, ensures high durability and versatile use. The delivery of the pumps includes thermal insulation jackets, gaskets, connecting plugs, or permanently installed cables.
Characteristics and Control
With a single touch, one of eight performance curves can be selected: four proportional and four constant. The proportional characteristics use the variable differential pressure method, in which the head is adjusted according to the flow. With the constant characteristic, the pump maintains the selected curve regardless of changes in the system.
Technical Data
| Type | WITA Delta HE light 40-25-180 |
| Installation length of this type | 180 mm |
| Maximum pump head | 4.0 m |
| Maximum 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 |
| Maximum system pressure | 10 bar |
| Connection sizes in the series | DN 15, DN 20, DN 25, DN 32 |
| Body material (180 mm) | gray cast iron with cathodic coating |
| Weight including insulation | 2.5 kg |
| EEI | ≤ 0.18 |
Application
The pump is designed for circulating media in a closed circuit at temperatures from +5 °C to +110 °C and a system pressure of up to 10 bar. It is important that the pipe has a section corresponding to the installation length of 180 mm.
Installation
Before replacing the pump, compare the installation length of the old and new pump. Type 40-25-180 requires a free pipe section of 180 mm. The pump is mounted on the pipe with a key, making sure to follow the flow direction and the installation position specified by the manufacturer. Use the supplied thermal insulation jackets and gaskets according to the instructions.
Frequently Asked Questions
What is the difference between the 40-25-130 and 40-25-180 pumps?
They differ in installation length: for the 40-25-180 model, it is 180 mm, while for the 40-25-130 model, it is 130 mm.
What is the body of the 180 mm length pump made of?
It is made of gray cast iron with a cathodic coating.
What is the minimum power consumption of the pump?
The minimum power consumption is from 3 W, with energy consumption ranging between 3 - 23 W.
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