| Terminal | Label | Function | |----------|-----------|----------------------------------| | 1 | VCC (24V) | Positive input from 24V supply | | 2 | GND | Common ground (0V) | | 3 | OUT1 | Switched output channel 1 (11A max) | | 4 | OUT2 | Switched output channel 2 (shared current) | | 5 | SIG1 | Control signal input (3.3–24V logic) | | 6 | SIG2 | Optional second control input |

If you are driving highly inductive loads (such as heavy-duty solenoids, pumps, or motors), always install a flyback diode parallel to the load. This absorbs high-voltage spikes when the system switches off, safely preserving the internal components of your controller.

: Use a multimeter to verify ground wire continuity from the component frame to the main enclosure case before applying power.

Connect the two isolated wires originating from your boiler's "T-T" terminals or pump relay directly to the two independent auxiliary end switch terminals. Commissioning and Testing

Powers the internal motor logic.

The F4901 11A 24V is a type of electrical relay module designed to control and regulate the flow of electrical current in a circuit. It's commonly used in applications such as industrial automation, process control, and power distribution. The device is rated for 24V DC operation and can handle a maximum current of 11A.

Complete Installation Guide and Schematic Analysis for the F4901-11A 24V Valve Actuator

Are you wiring this unit into a , a chilled water system , or a different type of system?

This technical article provides the complete schematic layout, step-by-step physical installation procedure, and essential safety rules for safely integrating the F4901 into your 24V DC infrastructure. 1. System Specifications and Requirements

Form factor dependent (typically 320–400 Ohms)