Common Questions About the Danfoss AVTB 20 What is the difference between AVTB and AVTA valves

including the HL2

leak-free connection and superior corrosion resistance in demanding commercial or residential environments

extending the life of the entire drive assembly

Lochinvar & A.O. Smith 100167819 Control Board THPU32HP7Y Common Questions About the DanfossThe Lochinvar & A. O. Smith 100167819 Integrated Control Board is a critical OEM replacement component designed for high efficiency hydronic systems. This board is the direct successor to the RLY30061 and is specifically engineered for use with Knight WB 81 211 wall mount boilers and KBN81 286 heating boilers with serial numbers beginning with H10. As a veteran technician, you know that maintaining the SMART SYSTEM control logic is essential for