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The ZN220 control module is used for simple zone control applications such as fan coil units or for miscellaneous control points such as room lighting or
General Service Administration Authorized Federal Supply Schedule ZN551 Controller for heat pumps, fan coil units and other packaged HVAC applications
Automated logic ZN551 Pdf User Manuals. View online or download Automated logic ZN551 Technical Instructions
ZN551 Zone Control, 5 DO, 5 UI, 1 AO, R-net Input: ZS Zone Sensors
Current transformers (CT’s) provide a simple, inexpensive and yet accurate means of sensing current flow in power conductors. They are available in 3 basic