Description
The Tjernlund Products MAC-4E Multiple Appliance Controller is used to operate multiple heating elements by interlocking their operation to provide coordinated and safe performance in burner and combustion HVAC systems, which can accept both 24V and 120V input and can be used to control multiple connected units in a single control configuration. It works by connecting to a central control, allowing appliances to operate only when the right draft and safety conditions are met, with interlock circuits controlling the operation sequence. It is mounted close to the main control unit and is connected to circuits and control wiring.
