While employing multiple lead/lag HVAC controllers for larger rooms has the benefit of added control and monitoring redundancies, care must be taken to coordinate their sequence of operation. 

Due to non-uniform heat load distribution in most buildings, even if all the lead/lag controllers have the same setpoints, unbalanced loading on HVAC units can occur, reducing system efficiency and increasing maintenance cost.

This can easily be prevented by:

·        Optimizing control setpoints across the lead/lag controllers

·        Selecting appropriate location(s) for the indoor temp sensors

·        Verifying the sequence of operation during regular PM schedule

For more information and guidance, download the full whitepaper below