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Knowledge base

Short, practical answers to questions often asked by caretakers, head teachers and designers. No marketing — just as we explain it in the boiler room.

EXAMPLE FROM PRACTICE – HOW THE SYSTEM CATCHES AN ERROR

The animation shows a possible way to compare measurements with the expected profile. Detection methods, thresholds and notifications are set for each specific system. → FULL‑SIZE VIDEO

01 · PROTOCOLS
3 MIN READ

WHAT IS M-BUS AND WHY DO WE USE IT?

M-Bus (Meter-Bus) is a European standard for remote reading of meters – heat, water, electricity and gas. Meters are connected to a two‑wire bus by which the central unit periodically collects readings from all devices.

M-Bus is one of the protocols for connecting compatible meters. Actual device support, wiring, sampling interval and data quality are verified on a specific building.

02 · MEASUREMENTS
3 MIN READ

HOW DOES THE CALORIMETER WORK?

The calorimeter measures delivered heat: from the flow of heating water and the difference between inlet and return temperature it calculates power and integrates it into energy (kWh or MWh). It consists of a flow section, a pair of temperature sensors and a computing unit.

Proper sizing of the flow section and correct installation of sensors are essential. During commissioning you must check the installation, configuration and the validity of readings against available comparison data.

FLOW SECTION · Pt500 SENSORS · COMPUTING UNIT · M-Bus FULL SCREEN →
03 · DATA
2 MIN READ

WHY A 15-MINUTE READING INTERVAL?

The annual statement tells you how much you used. Only 15‑minute readings reveal when and why: heating on weekends, water leakage at night, simultaneous switches that raise peak electricity demand.

Quarter-hourly profiles can help analyse peaks and time patterns and compare demand with solar PV generation. The actual measurement interval, tariff rules and purpose of analysis must be checked for each building.

04 · REQUIREMENTS
3 MIN READ

What is energy accounting?

Energy accounting is the systematic recording of energy and water use by buildings and associated costs. Obligations and required content depend on the type of building, owner and applicable regulations.

Digital monitoring can reduce manual transcription if meters are correctly connected and data is of sufficient quality. The report structure, responsibilities and verification method are defined in the project scope.

05 · SYSTEMS
3 MIN READ

BMS or monitoring (DOM) – what do I need?

Monitoring (DOM) collects and displays data from connected meters and sensors. A BMS controls connected systems, such as heating or ventilation, according to approved logic. Neither system alone guarantees savings without proper design, use and verification of results.

A possible approach is first to establish a measured baseline and after 3–6 months assess where regulation makes sense. The final sequence depends on existing equipment, risks, budget and the building's objectives.

06 · INVESTMENT
2 MIN READ

How is the payback period calculated?

Payback period = investment ÷ annual savings. Investment covers equipment, installation and commissioning; savings are the measured difference in consumption before and after installation, multiplied by the energy price.

Savings cannot be estimated solely by building type. A measured baseline, a comparable period, information on existing controls and a clear methodology are needed.