Carrier HY84DA005 Terminal Board 328140-751 Communication Protocol: Utilizes RS485 Modbus

Communication Protocol: Utilizes RS485 Modbus for stable

it integrates the safety shut-off and thermostatic regulation into a single housing

Quiet Operation: Factory-balanced to reduce harmonic vibration and noise

provides a clear electrical signal to the controller confirming that a safety switch or valve has fully closed before the system proceeds with the next step of the firing sequence

Common Installation Questions What is the proper millivolt output required for this valve

Carrier HY84DA005 Terminal Board 328140-751 Communication Protocol: Utilizes RS485 ModbusThe Carrier HY84DA005 Terminal Board is a high precision OEM HVAC replacement part engineered for reliable electrical termination in commercial and residential systems. Designed specifically for Carrier packaged unit wiring and compact mini split terminal connections, this low profile board (approximately 2" x 2" x 0. 5") provides a centralized junction for power distribution and control signals. Utilizing a Carrier HY84DA005 ensures that field