i'm a student currently studying HVAC and have a few questions regarding pneumatic systems. I'm hoping to get some help understanding the subject better from experienced control technicians.
my questions are:
what is the output response for direct acting and reverse acting thermostats?
what are their applications?
what are some ways of determining if the thermostat or the box it's controling are defective when there is a problem?
is there a good internet resource i can use to understand how pneumatic control systems operate and how to troubleshoot them?
thanks in advance... i really appreciate any time you spend anwering my questions...