<P><B></B> This comprehensive book covers both electric and electronic controls <I>in depth.</I> It uses at-a-glance charts cross-referenced to specific sections of the book. <B></B> Chapter topics encompass control operation, adjustment, troubleshooting, installation, use, and start-up procedures for different types of units, representative wiring diagrams for some types of equipment, safety procedures, and useful engineering data. <B></B> For air conditioning and refrigeration service technicians. </P>