TABLE OF CONTENTS IMPORTANT SAFETY INFORMATION..4 Gas Supply & Piping ........4 Venting System .........4 Clearances to Combustibles ......5 Sources of Corrosion .........5 Filter ............5 Flood Damage ...........5 ABOUT THE FURNACE .......6 Introduction ..........6 Category I Furnaces .........6 Category IV Furnaces ......6 Filter ............6 Thermostat ..........6 Furnace Location ........6...
IMPORTANT SAFETY INFORMATION IMPORTANT NOTE: If the gas supply fails to shut off Safety markings are used frequently throughout this or if overheating occurs, shut off the gas valve to manual to designate a degree or level of seriousness and should not be ignored.
IMPORTANT SAFETY INFORMATION detector in hallways near the bedrooms in each sleeping The furnace is designed to have certain clearances to area. CO detectors should be certified to the most combustible items such as wood, paper, etc. Some types recent requirements of the UL, IAS OR CSA Standard of insulation are combustible.
Category IV (Condensing) Furnaces • Single stage furnaces (GUH80A, GDD80A, GUH92A, Category IV furnaces typically have an AFUE rating over GDD92A, GUH95A, & GDD95A models) should be 90% and are mainly vented through plastic PVC pipe.
STARTUP & SHUTDOWN STARTING THE FURNACE 1. Make sure the filter is clean and in place. 2. Make sure the vent system is properly installed. 3. Set the thermostat to the lowest setting. 4. Close the manual gas valve outside the furnace. 5.
MAINTENANCE & INSPECTION FURNACE & AIR DUCTS BLOWER & FILTER • The furnace should be inspected annually by a licensed • It is recommended that the blower compartment be HVAC technician. Table 1 below contains suggested cleaned of dirt or lint that may have accumulated in the inspections and frequency of maintenance.
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¶ ¶ GUH95T Models Only Specifications & illustrations subject to change 709506A (Replaces 7095060) without notice or incurring obligations (01/14).