. Installation and troubleshooting of pump seals. Vernier calipers, micrometers, ... frequency drives. Cooling tower water treatment controls and chemical ... . Testing of contract current generator circuits and set level detector circuits. ... Lab (HVAC R) 1 Credit 3 Periods Diagramming and assembling electronic circuits ... the oscilloscope. Testing electronic circuits used on current production heat pumps. ... 3 Credits 3 Periods Properties of water, pressure distribution in hydronic ... flow in pipes, pressure drop/head loss, pumps in hydronic systems and pressurization ... , terminal users (units), automatic controls, distribution systems, expansion and ... pressurization equipment. Chilled water systems and low and high temperature ... water systems. Prerequisites: HVA112 and ...
for specific situations. Heat pumps: their operation, controls and metering ... and applications. Operation, control, and metering devices for heat pumps and ... . Corequisites: HVA112. HVA115 Motors, Controls and Wiring Diagrams 3 Credits 3 Periods ... draw. Sequence of operation, wiring diagram and electrical components associated ... of department. HVA115LL Motors, Controls and Wiring Diagrams Lab 1 Credit 3 ... Periods Drawing wiring diagrams, wiring systems and checking electrical ... circuits. Troubleshooting electrical problems of ... three-phase motors and controls. Safety stressed. Prerequisites: ELC/FAC ... . Installation and troubleshooting of pump seals. Vernier calipers, micrometers, ... frequency drives. Cooling tower water treatment controls and chemical ...