Hvac Wiring Diagrams 101

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1ø schematic diagram 1. Use copper wire (75ºc min) only between disconnect switch and unit. To be wired in accordance with n. e. c. If any of the original wire, as supplied, must be replaced, use the same or equivalent type wire.

Use copper wire (75º c min) only between disconnect switch and unit. To be wired in accordance with nec and local codes. If any of the original wire, as supplied, must be replaced, use the same or equivalent type wire. 1 phase heaters are shown wired for single supply circuit. Use 60 amp class k fuses only, for replacement. Condenser and indoor fan motors. Solenoid for reversing valve. Low voltage and line voltage wiring. By simply learning symbols for hvac diagrams, you can begin to get a bigger picture of an entire unit, which makes diagnosing problems easier.