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Form #: 630-140-1
The purpose of this chapter is to familiarize service technicians with symbols and conventions commonly used in schematic diagrams, thereby making it easier to identify components and their related circuits.
Form #: 630-141
This chapter deals with a wiring diagram for a packaged gas/electric system, which is a relatively complex heating and cooling unit. Many of schematic symbols currently used and recognized by the HVAC/R industry are at the end of this chapter.