Lowara Ecocirc XL D and XLplus D Twin Circulators

Advanced Communication between Pumps

Problem: In a critical heating plant, if the main pump fails, the building is left cold before the maintenance crew arrives. Furthermore, managing the wear and tear on two manual pumps is complicated.

Solution: With Lowara Ecocirc XL D , the two motors communicate with each other.
In the Standard version (XL D) , communication takes place via cable.
In the Advanced version (XLplus D) , communication is wireless or via advanced BMS protocols. The system automatically manages the master/slave exchange, ensuring that there is always a motor ready for use.

Simplified Flanged Installation

All Ecocirc XL D models are equipped with flanged connections (DN32, DN40, DN50, DN65, DN80). The cataphoresis-coated pump body usually includes a check valve (see specific data sheet) that prevents water from recirculating through the pump when stopped, ensuring hydraulic efficiency without the need to install bulky external valves.

Frequently Asked Questions about Twin Circulators

1. What is the difference between XL D and XLplus D in twins?

The main difference is connectivity. The XLplus D version is natively compatible with home automation (Modbus RTU, Bacnet) and has built-in Wi-Fi. This is essential for twin controllers because it allows you to remotely monitor which of the two heads is working and receive specific alarms if one of them fails.

2. If a motor breaks, do I have to replace the entire pump?

No, that's the beauty of Lowara twin pumps. The two motor heads can be removed individually. If one motor burns out, you can unscrew the four screws, remove the faulty motor head, and replace it (or install a temporary blind flange) while the other head continues to operate the system. You don't have to drain the system or remove the pump body from the pipes.

3. Are they suitable for chilled water (air conditioning)?

Yes, the Ecocirc XL range is designed to operate with liquid temperatures from -10°C to +110°C. The cataphoretic-treated pump body and electronic insulation make it suitable for chillers and cooling circuits, not just heating.