SIMPLER, SMARTER, SMOOTHER, AND SO MUCH SMALLER!

After being successfully established and highly appreciated in the Swedish market, it is now time for a European-wide launch. The GRB300 is developed with a clear purpose: to make life a little easier for both you who design the systems and you who handle the installation. 

Full control and easy commissioning

To simplify commissioning and give you full control, the pump in the GRB300 provides feedback on power consumption, current flow, and setting. The pump is easily adjustable in 21 steps. You set the flow directly on the pump, making both commissioning and follow-up smoother. Furthermore, you save space, which is always a plus when space is limited.

Unique valve function

The valve’s function, when pressure is equal from both ports, combines a variable primary flow with a constant secondary flow through a unique design. This allows for an integrated bypass within a three-way valve, ensuring a smooth flow in the system without the need for extra components. 
Sounds complicated? It’s not – just tricky to explain!

Perhaps this illustration can make things clearer!
 

💧 Simply Explained

It's all about the 2-way functionality using a 3-way valve, where ESBE's unique valve acts as a smart controller for the water flow. You get a stable and reliable flow throughout the system without complex calculations or extra parts.

Efficiency Meets Versatility

The GRB300 is designed for applications requiring efficient energy transport and high flexibility. It is optimal for:
●    Comfort Cooling and Heating: Reheating coils, convectors, and radiators.
●    Public Environments: Its compact size and high performance make it ideal for schools, sports halls, and office buildings.

Pocket-Sized Installation – The Most Compact on the Market

The GRB300 is small, lightweight, and easy to place – imagine mounting an A4 sheet of paper on the wall! At the concrete factory in Veinge, space is at a true premium. Here, it serves its purpose perfectly by regulating the balance between hot and cold to deliver the exact right temperature.
 

"The GRB300 has been a reliable workhorse for us ever since it was launched in Sweden. It works really well, and in hindsight, it’s clear it was the perfect fit for this project. Since it is mounted directly onto the pipes, we also gained installation flexibility – which was crucial in this specific space where it was both cramped and hard to reach," says Johnas Ringius, Site Manager at Veinge Betong.

To make installation as smooth as possible, all ESBE circulation units, including the GRB300, are delivered with an adjustable wall bracket (0–30 mm). This allows you to easily compensate for wall unevenness or adjust the distance to the pipes for perfect placement. Less hassle, faster installation.

Powerful Even in Large Volumes

Despite its compact exterior, the circulation unit has the capacity to handle airflows of up to 6,000 m³.

At Designlight in Moheda, cramped spaces aren't the primary challenge. Instead, the focus is on the power of the GRB300, where it plays a vital role by controlling the ventilation across large parts of their warehouse.