iO HVAC Controls UMM-CS Malfunction Monitor, Current Sensor

Features:

• The UMM-CS can monitor the current to an HVAC blower using a current sensing relay.
• If no current is detected after 6 seconds, the relay contacts can be used to trigger an alarm or remote monitoring device.
• Make sure to connect 24VAC to the UMM that signals equipment to run.

The UMM Universal Malfunction Monitor is a solid-state, 24 VAC interface module designed to accept a variety of dry contact inputs such as a current sensing relay, static pressure switch, refrigerant pressure sensor, or freeze stat. The module will trigger an SPDT relay after a selected time of 6 seconds or 6 minutes once the input contacts open. The relay contacts can be used to disrupt equipment operation and/or send a signal to an alarm or other external monitoring device that a malfunction has occurred. This can greatly reduce damage to equipment and property as well as save downtime and expensive equipment failure costs.

Wiring Diagram: