Siemens Building Technology 331-3002 Kit 328140-751 or visible rust on the

or visible rust on the burner ports

they typically step down the voltage to 120V at the ignitor terminals

including R-410A units

In 3-way configurations

Using a stainless steel heat exchanger significantly improves resistance to oxidization compared to aluminized steel alternatives

Siemens Building Technology 331-3002 Kit 328140-751 or visible rust on theThe Siemens Building Technology 331 3002 Kit features the No. 4 Pneumatic Damper Actuator, a rugged, metal fabricated powerhouse engineered for precision air flow control in commercial HVAC systems. This piston type pneumatic actuator is designed for the gradual or positive actuation of HVAC dampers and fire smoke dampers, offering a consistent 4 inch stroke. Operating within a 5 10 psi spring range, it provides the necessary force for reliable mixing