Wilo Atmos PICO high-efficiency circulator pump
Atmos PICO is a circulator pump with an EC motor and integrated frequency converter, used in boiler-radiator circuits as well as cooling and air-conditioning loops. The series has 7 models with Rp ½", Rp 1" and Rp 1¼" connections and 130 or 180 mm installation length.
- Application
- Heating, cooling and air-conditioning circuits
- Fluid temperature
- -10 / +95 °C
- Max. operating pressure
- PN 10
- Energy efficiency index
- EEI ≤ 0.20 – 0.23 (depending on model)
Models (7)
| Code | Model | EEI | Connection | Installation length | Max. operating pressure |
|---|---|---|---|---|---|
| 4232692 | Atmos PICO 15/1-6 | ≤ 0.20 | Rp ½" | 130 mm | PN 10 |
| 4232691 | Atmos PICO 25/1-4 | ≤ 0.20 | Rp 1" | 180 mm | PN 10 |
| 4232693 | Atmos PICO 25/1-6 | ≤ 0.20 | Rp 1" | 130 mm | PN 10 |
| 4232694 | Atmos PICO 25/1-6 | ≤ 0.20 | Rp 1" | 180 mm | PN 10 |
| 4232696 | Atmos PICO 25/1-8 | ≤ 0.23 | Rp 1" | 180 mm | PN 10 |
| 4232695 | Atmos PICO 30/1-6 | ≤ 0.20 | Rp 1¼" | 180 mm | PN 10 |
| 4232697 | Atmos PICO 30/1-8 | ≤ 0.23 | Rp 1¼" | 180 mm | PN 10 |
Series specifications
| Application | Heating, cooling and air-conditioning circuits |
|---|---|
| Fluid temperature | -10 / +95 °C |
| Max. operating pressure | PN 10 |
| Energy efficiency index | EEI ≤ 0.20 – 0.23 (depending on model) |
| Control modes | Δp-v and constant speed, 6 settings |
| Electrical | 1~230 V, 50 Hz · IP X2D · insulation class F |
| Materials | GG 20 housing, PP + 40% GF impeller, stainless steel shaft |
| Scope of delivery | Pump, Wilo-Connector, installation and operating instructions |
How to choose
- Installation length: Measure the distance between the unions of the pump being replaced. The 25/1-6 comes in 130 mm (4232693) and 180 mm (4232694), so it can be swapped without touching the pipework.
- Connection: The 15 model has Rp ½", the 25 models Rp 1" and the 30 models Rp 1¼".
- Curve family: The -4, -6 and -8 at the end of the model name are different head curves. For longer circuits or many radiators look at the -8 models and confirm the choice with the curves in the catalogue.
- Control mode: The pump runs in Δp-v (variable differential pressure) or constant speed mode; mode and curve are set with the single button on the pump.
How to write it in a quote
Write code, model, connection and installation length in one line: "Wilo 4232696 Atmos PICO 25/1-8 high-efficiency circulator, Rp 1", 180 mm, PN 10, 1~230 V". With the length stated, the wrong size does not reach the site.
FAQ
Where is Atmos PICO used?
In heating, cooling and air-conditioning circuits; the typical job is a boiler-radiator loop. Fluid temperature must stay between -10 and +95 °C and pressure within PN 10.
Why does Atmos PICO 25/1-6 have two codes?
It is made in two installation lengths: 4232693 is 130 mm, 4232694 is 180 mm. Choose the one that matches the union-to-union distance of the old pump.
What is the energy efficiency index?
EEI ≤ 0.20 for 15/1-6, 25/1-4, 25/1-6 and 30/1-6; EEI ≤ 0.23 for 25/1-8 and 30/1-8.
How is it wired?
With the Wilo-Connector supplied in the box, on 1~230 V, 50 Hz. An LED shows operating and fault status, and the motor has an automatic deblocking function.
Information compiled from the Wilo product documents. Tekliva does not sell products or publish prices.
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