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HVAC electrical ch. 16 complete solutions
HVAC electrical ch. 16 complete solutions 
A ___ starts stops or modulates the flow of water, air, or refrigerant to the system or conditioned space. 
controlled device 
All controls systems can be subdivided into ____ no matter how many controls there are. control 
loops 
____ control systems were used before electronics. pneumatic 
Pneumatic controls must have a permanent air supply that is ___. clean and dry 
Most system compressors provide ____ psig of air pressure to the storage tank...