always check the Bard heater kit selection guide before installation

Industrial Durability: Rugged construction stands up to the thermal cycling common in chilled water and hot water applications

Ease of Installation: The bored-to-size 7/8 inch inner diameter ensures a slip-fit on standard shafts with dual setscrews (one over the keyway and one at 90 degrees) for maximum retention

the quartz drive features a self-recharging battery backup that maintains a charge while the primary 24V supply is active

the RIBMN24C pilot relay offers a high-density solution for contractors needing to manage light electrical loads or drive larger contactors

Reznor 121599 Gas Valve Refrigerant always check the Bard heaterThe Reznor 121599 Gas Valve is a natural gas valve engineered for precision fuel regulation in specific Reznor unit heaters and gas fired equipment. This 24v gas valve is a critical replacement component for maintaining safe burner operation and efficient combustion. It is factory set for 3. 5" WC (water column) outlet pressure, ensuring proper manifold pressure for standard natural gas applications. As a single stage, electronic ignition gas valve,