Belimo NVF24-MFT US User Manual

Wiring for
Damper Actuators and Control Valves
July 2011

Belimo NVF24-MFT US Specifications

General

Control Type	Modulating
Angle of Rotation	90°
Housing Material	Polycarbonate
Protection Class	IP54
Connection Type	Screw Terminals
Power Supply	24 VAC/DC
Torque	5 Nm
Ambient Temperature Range	-22...122°F [-30...50°C]
Operating Range	0-90°
Direction of Rotation	Reversible
Mounting	Direct

Summary

General Wiring Instructions and Transformer Sizing

Transformer Requirements

Details the 24 VAC Class 2 transformer requirements for Belimo actuators.

Multiple Actuator Wiring

Actuator Wiring: On/Off, Spring Return, Electronic Fail-Safe, 24V

Actuator Wiring: Floating Point, Spring Return, 24V

Actuator Wiring: Proportional, Spring Return, 24V

Actuator Wiring: Proportional Control, 24V, 2-10 VDC or 4-20 mA

Wiring Multiple MFT Actuators: Control Type PWM

Auxiliary Switch Wiring

Interface Wiring Detail: SYX-MFT, 24V, 120/230V

SYx-P Interface Wiring Detail

Caution Notes

Important safety warnings and operational cautions for interface wiring.

SY Actuator Wiring Diagram: SY1 Series

Wiring for Control Valves: SY2 Series Proportional, 24V, 120V or 230V

Wiring Diagrams for Fire and Smoke Damper Actuators

Hazard Identification

Safety warnings and cautions for fire and smoke damper actuators.

Installation Notes

Auxiliary Switch Wiring Examples