USER S INFORMATION MAINTENANCE AND SERVICE MANUAL HIGH EFFICIENCY COMMERCIAL BELT DRIVE SERIES MODELS GY8S160E30UH21 Single Stage Upflow Horizontal CONTACT INFORMATION USER S INFORMATION SAFETY INSTRUCTIONS FOR EXAMINING THE FURNACE INSTALLATION HOW YOUR GAS FURNACE WORKS START UP AND SHUTDOWN INSTRUCTIONS TABLE OF CONTENTS 1 FURNACE CLEANING SECTION 1 Burner Removal Cleaning 1 Cleaning the Heat Exchanger SEOUENCE OF OPERA
278436 YT G A 0407 Heating and Air Conditioning TECHNICAL GUIDE MODELS GY8S UH LY8S UH GAS FIRED HIGH EFFICIENCY SINGLE STAGE UPFLOW HORIZONTAL FURNACES STANDARD amp Low NOx NATURAL GAS 40 130 MBH INPUT Due to continuous product improvement specifica tions are subject to change without notice Visit us on the web at www york com for the most up to date technical information Additional information can be found at www gamanet org DESCRIPTION These hi