Author: musawir ramejo

In Variable Refrigerant Flow (VRF) and Variable Refrigerant Volume (VRV) HVAC systems, control wiring is more than a supporting component—it is the core infrastructure that governs system behavior. Each action, from a zone calling for cooling to the modulation of an expansion valve, is transmitted over a low-voltage control network that requires exacting design and flawless execution. The system’s performance hinges on seamless communication between all devices, including indoor units, outdoor units, thermostats, central controllers, and branch selector boxes. Unlike traditional split systems, where basic thermostats send simple on/off commands, VRF systems operate on complex digital protocols that require clean,…