Description
The Tjernlund Products MAC4E Interlock Control is a device that manages the operation of up to four additional HVAC appliances. It operates by coordinating with a primary controller, usually a Tjernlund UC1 Universal Control, to guarantee that these appliances run in the proper order and without conflict. This is accomplished by the MAC4E sending electricity to the appliances in a predetermined order, only when it is safe and appropriate to do so. This sequencing protects the equipment from potential harm and improves overall system performance.The MAC4E is frequently found in air handling units, fan coil units, and other HVAC systems that require the sequential management of several appliances, such as gas or oil furnaces, draft inducers, and power venters.
