From classrooms to technical facilities
The school’s modernization included structural renovations, the creation of new specialized classrooms, replacement of flooring, new technological equipment, and the provision of barrier-free access.
One of the biggest challenges was addressing the heating system. The original brown coal boilers were nearing the end of their service life; most of them were no longer functioning, and their operation did not allow for effective regulation. For a school with heat loss exceeding 200 kW, it was therefore necessary to design a new, reliable, and long-term sustainable solution. That is precisely why the choice fell on a system of heat pumps.
Great emphasis was also placed on indoor air quality. Consequently, controlled ventilation with heat recovery was installed in classrooms and offices, helping to maintain fresh air without unnecessary energy losses.
A cascade of heat pumps instead of coal-fired boilers
A cascade of ten air-to-water EcoAir 420 heat pumps has become the new heat source. The heat pumps were divided into two separate cascades of five units each, which contributes to higher operational reliability and flexibility of the entire system.
In the event of extremely low outdoor temperatures, the system is supplemented by electric boilers, which serve as a bivalent heat source. Stable operation is ensured by two storage tanks with a capacity of 2× 2000 liters and a hot water tank RBC 500 HP.
Another advantage of the solution was the preservation of the existing heating system. The project confirmed that most of the original radiators can work seamlessly with the new heat source, which significantly simplified the entire modernization process.
Fresh air for concentration and comfort
The project also included the installation of 15 Totus Midi heat recovery units. These ensure regular air exchange in classrooms and offices while utilizing the heat from the exhaust air to preheat the fresh air supplied to the building. The school thus gained not only a new heat source but also a higher-quality indoor environment, which has a direct impact on the comfort of students and teachers during lessons.
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Reliable operation under control
The entire system is managed by the IR 34 controller, which controls the heat pump cascade, distributes output among individual circuits, and optimizes operation according to the building’s current needs.
As a result, the school now uses a modern heating and ventilation system that is significantly more comfortable, efficient, and environmentally friendly than the original solution based on coal combustion.
Quick facts about the project
- Location: Tučapy Elementary School and Preschool
- Scope of work: replacement of coal-fired boilers for heating, hot water production, and controlled ventilation for the entire school complex
- New heat source: 10× Regulus EcoAir 420 air-to-water heat pumps
- System control: Regulus IR 34 controller
- Heat recovery: 15× Totus Midi
Products in this reference
EcoAir 420 Heat Pump
Air-to-water heat pump, heat output of 17.52 kW at A7/W35
PS 2000 N+ Thermal Store
no heating heat exchangers, 1250mm diam., 1955mm high, 9 G 6/4“ tappings
SE Insulation for PS 2000 N+
fleece insulation
RBC 500HP Hot Water Storage Tank
with 1 upsized tube heat exchanger – 5.9 sqm surface area, incl. insulation, enamelled, 760 mm diam., 1785 mm high
