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It is designed strictly for 24VAC 50/60Hz control circuits
always verify the wiring diagram inside your specific ComPac unit
if the heat pump isn't heating at all
provided the BTU requirements and pressure limits are maintained
Watts 0590721 Air Vent R-407C It is designed strictly forThe 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
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