For courses in Principles of HVAC&R, Electronic Controls, and HVAC System Design. This comprehensive text covers both electric and electronic controls in one book in depth. Using at-a-glance charts, cross-referenced to specific sections of the text, it encompasses control operation, adjustment, troubleshooting, installation, and use, and provides start-up procedures for different types of units, representative wiring diagrams for some types of equipment, safety procedures, and useful engineering data.