the HH18HA160 ensures a reliable electrical connection and high-accuracy thermal sensing to maintain system efficiency and safety compliance

As a critical HVAC gas control valve

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

Generic housings often have slight variations in the scroll dimensions

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

Tjernlund Products MAC1E Control 320788-703 the HH18HA160 ensures a reliableThe 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