This microprocessor-based module manages a 10-second trial for ignition (TFI) with a single-try logic

monthly cleaning is recommended to prevent static pressure spikes

Replacing a faulty refrigerant low pressure cutout with this genuine Trane replacement part preserves the engineered safety limits of the equipment

maintaining air-handling efficiency and preventing system-wide downtime

Siemens Building Technology QAA22SS.FWSN Stat 318172-701 This microprocessor-based module manages aThe Siemens QAA22SS. FWSN is a high precision room temperature sensor engineered for seamless integration into Building Automation Systems (BAS). This full featured HMI unit provides technicians with a versatile selectable output signal (0 10V, 0 5V, or 4 20mA), making it compatible with a wide range of HVAC controllers and Terminal Equipment Controllers (TECs). Designed for accuracy, the sensor offers a measurement range of 32F to 122F with a