QA DHW Boiler
Intelligent boiler control that automatically utilizes PV surpluses or cheap energy, ensures adequate hot water supply with minimal costs. Flexible temperature adjustment, smooth power control and full automation make this solution an ideal choice for modern homes.



🔥 QA Bojler TUV
QA Bojler TUV is an application for managing hot water heating in tanks using electric heating elements. It enables cost-effective and comfortable heating using required heating, utilization of photovoltaic surpluses, or spot-based control based on current electricity prices.
Electric heating control allows setting temperature for up to 3 different temperature bands and choosing between fixed set temperature or cheap energy modes, where heating is controlled by available photovoltaic surpluses. Heating modes are controlled by the Režim TUV application. Outputs can operate in continuous mode or as on/off, including support for the EX01PV module for controlling SSR relays or other discrete devices. The application also integrates with spot control, which provides the required energy for heating and subsequently plans it optimally.
💼 Business presentation
The application controls heating elements based on required temperature, available sources, and current mode. It supports economical, normal, comfortable, and maximum heating and enables power control continuously or switched. It can control 1–3 outputs and work with 1–2 temperature sensors. With support for EX01PV or Shelly Dimmer, it is suitable for single-phase, three-phase, and inter-phase heating spirals.
📊 Analysis and data management
For clear visualization, measurement history management, and graphs, we recommend integration with SCADA Mervis.
🧪 TRIAL – Trial version
Test the full functionality of the application before purchase.
The TRIAL version is available for 2 days and allows testing all settings and control logic in practice.
You can download it here: ⬇️ Download trial version
⚙️ Key features
- Electric hot water heating control
- Fixed temperature or cheap energy (PV surpluses / spot)
- Up to 3 temperature bands and up to 5 temperature levels
- Modes: Economical, Normal, Comfortable, Maximum, One-time
- Control of continuous and switched heating element power
- Support for EX01PV (SSR) and Shelly Dimmer
- 1–3 outputs, 1–2 temperature sensors
- Support for single-phase, three-phase, and inter-phase heating elements
- Response to high HDO tariff
- Safety contactor control
- Integration with spot control for energy calculation and planning
🚨 Alarm notification
The application allows setting up alarm notifications when the set hot water temperature (TUV) is exceeded. When the alarm value is reached, the system automatically notifies selected users.
- Exceeding the set TUV alarm temperature
- 📧 Email notification to selected user
- 📲 Push notification to mobile or other device
✨ Typical use
- Cost-effective hot water heating utilizing photovoltaic surpluses
- Comfortable heating according to time schedule
- Heating optimization based on spot prices
- Operation of tanks with multiple spirals, phases, or SSR control
🌍 Language packs
🇨🇿 Czech 🇬🇧 English
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