Wired Thermostatic Valve Controller 4 Zones Tech Sterowniki L-2

The Tech Sterowniki L-2 Wired Thermostatic Valve Controller is a professional-grade device designed for precise temperature control in multi-zone heating systems. It supports up to 4 independent zones, each capable of controlling up to 4 normally closed (NC) thermostatic actuators, with a maximum total load of 3 A. The controller features integrated pump and boiler outputs, wired room thermostat inputs, and essential functions such as frost protection and delay. Housed in a compact DIN rail or surface-mount enclosure with IP20 protection, it operates on 230V AC power and is ideal for residential and commercial heating management.

Advantages

Reliable wired control eliminates wireless interference, ensuring stable communication. The 4-zone design allows independent temperature regulation for different areas, improving energy efficiency. Built-in pump and boiler outputs simplify system integration, while frost protection safeguards against freezing conditions.

Suitable for

• Underfloor heating systems
• Radiator heating systems
• Multi-zone residential and commercial buildings
• Hydronic heating systems with NC actuators

Key specifications

• Control Type: Wired
• Number of Zones: 4
• Power Supply: 230V AC, 50Hz
• Actuator Outputs: Up to 16 (4 per zone)
• Actuator Type: NC (Normally Closed)
• Pump Output: Yes (230V AC)
• Boiler Output: Yes (Potential-free contact)
• Room Thermostat Inputs: 4 (Wired)
• Max Load per Zone: 0.3 A
• Max Total Load: 3 A
• Mounting: DIN Rail / Surface Mount
• Operating Temperature: 5°C to 50°C
• Protection Class: IP20
• Functions: Pump control, Boiler control, Frost protection, Delay

Recommendations

For optimal performance, pair with compatible NC thermostatic actuators and wired room thermostats. Ensure proper installation by a qualified technician. The controller is designed for indoor use only.