Siemens DDC 540-100 Controller Freon The 0556035 is the updated

The 0556035 is the updated Lead Free (LF) version

OEM compatibility with Lennox ECB29 and ECB47 series air handlers ensures precise fitment and factory-standard performance

Operating at 120V and 0

Common Questions What motor frame size is compatible with the 810120-050

Siemens DDC 540-100 Controller Freon The 0556035 is the updatedThe Siemens 540 100 is an APOGEE TEC (Terminal Equipment Controller) designed for high performance Direct Digital Control (DDC) in pressure independent Variable Air Volume (VAV) systems. This electronic output controller provides precise airflow management and temperature regulation, operating as a standalone unit or fully integrated into a Siemens FLN (Floor Level Network). Engineered for Terminal Box applications, the 540 100 handles complex HVAC