Tailwind Combination Gas Controls

Overview

The A.O. SMITH 100308934 is an OEM hot water heater control designed for natural gas water heating systems operating on power direct vent (PDV) configurations. This control unit governs water temperature regulation with a setpoint capacity of 180 degrees F and is rated for 4 inches water column (WC) gas pressure. It is an original manufacturer part, meaning it meets the same design and performance standards as the component it replaces. Licensed plumbers and water heater service technicians are the primary installers of this control in both residential and light commercial applications. This control is suited for natural gas water heaters using a power direct vent setup, which relies on a motorized blower to exhaust combustion gases through PVC or similar venting rather than a traditional atmospheric or B-vent system. The 4 inches WC rating aligns with standard residential natural gas supply pressure. Installations involving PDV water heaters are common in utility rooms, mechanical rooms, and basement applications where sidewall venting is required or preferred. Key Features OEM replacement control — original A.O. SMITH specification, direct factory-equivalent fit 180 degrees F maximum temperature setpoint for high-demand hot water applications Rated for 4 inches water column natural gas inlet pressure Designed for power direct vent (PDV) water heater systems Natural gas (NG) fuel type — not rated for LP or propane configurations Compatibility Designed as an OEM-style…