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GPD 503 HVAC Software EPROM Installation and Programming Guide

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This document provides installation and programming instructions for an HVAC software EPROM set used in GPD 503 drives, enabling advanced functions like elapsed time metering, kilowatt hour tracking, energy cost totalization, air proving, analog monitoring, sleep mode, and PID control. It includes safety warnings, step-by-step EPROM replacement procedures, drive reset instructions, and configuration codes for 2-wire or 3-wire control.

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