Johnson Controls A19AAF-12 Temperature Control 30067439-890 Which furnace models use the

Which furnace models use the 661045R orifice

and RHH models

essential for sensitive pneumatic control strings

007 orifice ensures that the air volume is restricted enough to allow the thermostat to maintain control over the branch pressure without overwhelming the system's air compressor capacity

Its robust construction is designed to withstand the high-vibration environments of a mechanical room

Johnson Controls A19AAF-12 Temperature Control 30067439-890 Which furnace models use theThe 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