supporting multiple sensors or a single high-draw controller

designed to mount directly onto a motor shaft with a standard keyway

Direct Swap Compatibility: Engineered as a drop-in replacement head mechanism for McDonnell & Miller Series 93 and 193 controls

Efficient 3-Phase Power: The 3-phase 460V motor design provides superior starting torque and lower operational amperage (approx

Common Questions: Why is my Lennox furnace failing to sense a flame

Tjernlund Products MAC1E Control 320788-703 supporting multiple sensors or aThe Tjernlund MAC1E Multiple Appliance Control is an essential interface for sequencing draft inducers or power venters with multiple heating appliances. Specifically designed for 24 VAC control circuits, this interlock control allows a single exhaust fan to serve up to two separate gas fired burners or water heaters. When any appliance calls for heat, the MAC1E energizes the fan and verifies the pressure switch circuit before allowing the burner to