Qsmart NC Underfloor Heating Actuator – Normally Closed, Electrothermal Servomotor, 230V, M30x1.5mm Thread

An NC (Normally Closed) actuator for underfloor heating is an electrothermal servomotor used to control the flow of hot water in an underfloor heating system. This type of actuator is called ‘NC’ because in its default state — when it is not powered — it remains closed, meaning it does not allow water to flow through

Operation of an NC Actuator for Underfloor Heating:

1. Idle State – NC Underfloor Heating Actuator (Not Activated):
   By default, the NC (Normally Closed) actuator is in a closed position, meaning the circuit is shut, and hot water flow is not allowed through the underfloor heating system.

2. Activation of the NC Underfloor Heating Actuator:
   When the temperature control system detects that the floor temperature needs to be reduced, it sends a signal to the actuator to open. The NC actuator responds to this signal by switching to the open state.

3. Active State – NC Underfloor Heating Actuator (Open):
   When the actuator is activated, it opens and allows the fluid (typically hot water from a central heating system) to be diverted away from the underfloor heating circuit. This reduces or interrupts the flow of hot water to the floor, which results in a lower floor temperature and, consequently, a cooler room temperature.

By using Qsmart NC actuators, the underfloor heating system can be precisely controlled to maintain a comfortable room temperature. Once the desired temperature is reached, the actuator closes again, allowing hot water to flow back into the underfloor heating circuit and maintain a stable temperature.

Technical Specifications – Quicksmart NC Underfloor Heating Actuator:

• Power Supply: 230V

• Max Current: 200mA – 200ms

• Power Consumption: 1–3W

• Opening/Closing Time: approx. 3 minutes

• Cable Length: 70 cm

• Thread Size: M30x1.5

• Protection Rating: IP54

• Force: 110N (±10%)

• Stroke: 4 mm