Inefficient operation due to incorrect start-up

The challenge of starting a heating system

One of the most common problems when starting a heating system is that, if not done correctly, it can have negative side effects such as:

- Excessive energy consumption.

- Annoying noises.

- Premature wear and tear on the system.

- User dissatisfaction.

Often, the challenge lies in setting the pump correctly, as it is often unclear what the best setting is. In many cases, the pump speed is adjusted to generate an amount of pressure that allows adequate water flow throughout the system. However, this method is not always the most efficient.

The challenge of configuration

Most pumps have recommended settings for optimal operation. Below are the requirements for two of the most common heating systems: underfloor heating and radiators.

Underfloor heating

Underfloor heating is an efficient solution for heating a home, but due to the low temperature of the water flow, it must be started up carefully, with the balance and pump settings adjusted.

In these systems, the pressure in the underfloor heating manifold is virtually independent of the heat demand in the different areas of the building. Therefore, the pump must be set to a constant pressure, ensuring that the flow rate remains stable in all areas of the system. This not only ensures optimal comfort, but also prevents unnecessary energy consumption.

Radiators

In the case of radiators that use thermostatic valves (TRVs), these adjust the flow rate according to the heat demand. This ensures a suitable room temperature and good comfort for the user.

When there is little heat demand, the pressure loss in the system is lower. To prevent the pressure from being too high and causing noise in the valves, the pump should be set to proportional pressure. This means that the pressure is adjusted proportionally to the water flow required by the system.

Grundfos AUTOADAPT – simplifying the process

Grundfos circulators offer a variety of settings that make it easy to start up heating systems, whether they are integrated into boilers, heat pumps or stand-alone solutions. The easiest option to avoid problems during start-up is to opt for a circulator with the Grundfos AUTOADAPT function.

This function automatically and continuously adjusts the pump's performance according to the actual heat demand. This means that the pump adapts to the needs of the system at all times, optimising home comfort with minimum energy consumption. AUTOADAPT simplifies the commissioning process and helps make it fast, safe and efficient.

AUTOADAPT benefits

- Optimizes user comfort.

- Reduces service calls.

- Minimizes the risk of noise in the system.

In short, proper commissioning of a heating system is crucial to avoid performance problems and achieve efficient energy use. With solutions such as AUTOADAPT, a perfect balance between comfort and energy savings is achieved.