Johnson Controls A19AAF-12 Temperature Control 30067439-890 providing high water capacity and

providing high water capacity and debris filtration to maintain system purity and thermal efficiency in both residential and commercial refrigeration environments

making it suitable for large-scale residential and light commercial hydronic applications

specifically for liquid line service

Rugged Construction: Designed for commercial lead-lag applications with a reliable 10k ohm loop resistance profile

Johnson Controls A19AAF-12 Temperature Control 30067439-890 providing high water capacity andThe Johnson Controls A19AAF 12 is a robust mechanical temperature control engineered for high performance heating and general purpose HVACR applications. Built with a single pole double throw (SPDT) switch configuration, this remote bulb controller delivers precise temperature regulation across a broad 25 to 225? F setpoint range. The unit features an automatic reset mechanism and a 3. 5? F fixed differential, ensuring consistent cycling and system