How can you confirm a heat reclaim coil is functioning properly during maintenance?

To confirm that a heat reclaim coil is functioning properly during maintenance, one of the most effective methods is to call for heating on the reclaim stat and ensure that the solenoid energizes. This process directly tests the operation of the system.

When the heating demand is initiated via the reclaim stat, the solenoid valve should open, allowing the heated refrigerant or fluid to flow through the coil. This is essential because the heat reclaim coil's job is to capture waste heat from a refrigeration system and transfer it to the incoming air or water. If the solenoid does not energize, or if it does not open, it indicates a potential issue with the system that needs to be addressed.

This method effectively verifies that both the control system and the mechanical components are working as intended, ensuring that the heat reclaim system is ready to perform efficiently. Other options, while they may provide some insights, do not offer a direct confirmation of the coil's operational capability during a heating demand scenario.