Controller TK-5a (for non-pressurized systems) – intelligent temperature and water level management for your solar system.

✔ Full installation control
✔ Automatic operation + manual mode
✔ Safety and energy efficiency

Key Functions:

✔ ⚡ Automatic self-diagnosis after startup
✔ 🕒 Built-in clock and work schedule
✔ 💧 Clear water level indicator (5 levels)
✔ 🌡️ Continuous water temperature measurement
✔ 🔥 Automatic heating (30–80°C)
✔ 🚨 Low water level alarm
✔ 🎛️ Manual heater and valve control
✔ 📅 Operation programming (2 cycles per day)
✔ ⚠️ Sensor failure alarm
✔ 🚿 "Turbo" function – support for low pressure
✔ ❄️ Anti-freeze protection
✔ 💾 Settings memory after power failure
✔ 🛡️ Dry-run protection
✔ 🔄 Overload protection

💡 Universal Application

Dedicated to non-pressurized systems: PROECO YL, SOLARIS L, HYDRA L

☀️ When there is not enough sun – it will automatically heat the water using an electric heater.

Technical Data:

Dimensions: 170 × 128 × 40 mm
Power supply: ~220 V (AC)
Power consumption: < 6 W
Temperature range: 0–99°C (±2°C)
Water level: 5 stages
Max. heater power: 3000 W
Max. pump / cable power: 500 W
Valve power supply: 12 V (DC)

Set includes:

✔ Solenoid valve 12V 1/2" inch

✔ Water level and temperature sensor (20m)

Advantages:

★ Recommended by installers
★ Safe and maintenance-free operation
★ Real energy savings

👉 Choose a proven solution and have full control over your installation!

User Manual:

User Manual - TK-5a