Watts 0590721 Air Vent R-407C 0A and integrates seamlessly with

0A and integrates seamlessly with VR8205 or VR8305 gas valves and Q347A ignition hardware

always verify the wiring diagram inside your specific ComPac unit

Veteran technicians recognize that a functional compressor heater is the first line of defense against premature mechanical failure

if you are connecting both a wired controller and a DIII-Net adapter simultaneously

minimizing the risk of mechanical failure or hydraulic lock

Watts 0590721 Air Vent R-407C 0A and integrates seamlessly withThe Watts 0590721 FV 4M1 1 Air Vent is a high performance 1 inch automatic air vent valve designed for veteran contractors managing commercial and residential hydronic heating systems. Engineered with a rugged brass body construction, this vertical pattern vent facilitates the continuous removal of trapped air from both hot and cold water distribution lines, preventing air lock and system noise. It features a 150 PSI maximum pressure rating and a