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From inside (document excerpt):
58PAV Upflow Induced-Combustion Furnaces Installation, Start-Up, and Operating Instructions Sizes 045-155, Series 141 NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. Index Page ® ama CANADIAN GAS ASSOCIATION A PP R O VED R SAFETY CONSIDERATIONS .1 Clearances From Combustible Materials .1 Dimensional Drawing .2 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCEDURE 2-3 INTRODUCTION 3 LOCATION 3 General 3 Location Relative to Cooling Equipment 3 Hazardous Locations .3 AIR FOR COMBUSTION AND VENTILATION .3-5 Unconfined Space .4 Confined Space 4-5 FILTER ARRANGEMENT .5-6 LEVELING LEGS (IF REQUIRED) .5-6 GAS PIPING .6-7 ELECTRICAL CONNECTIONS 7 115-v Wiring .7 24-v Wiring .7 Accessories 7 VENTING 7 START-UP, ADJUSTMENT, AND SAFETY CHECK .7-14 General .7-8 Sequence Of Operation .8-11 Heating Mode 8-9 Cooling Mode .9 Continuous Blower Mode .9 Heat Pump Mode .9-11 Start-Up Procedures 11 Adjustments .11-14 Set Gas Input Rate 11-12 Set Temperature Rise 12-13 Set Thermostat Heat Anticipator 13 Check Safety Controls .13-14 Checklist 14 SAFETY CONSIDERATIONS Installing and servicing heating equipment can be hazardous due to gas and electrical components.
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Only trained and qualified personnel should install, repair, or service heating equipment. Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels attached to or shipped with the unit and other safety precautions that may apply. Follow all safety codes. In the United States, follow all safety codes including the National Fuel Gas Code (NFGC) NFPA No. 54-1992/ANSI Z223.1-1992. In Canada, refer to the current edition of the National Standard of Canada CAN/CGA-B149.1and .2-M91 Natural Gas and Propane Installation Codes (NSCNGPIC). Wear safety glasses and work gloves. Have fire extinguisher available during start-up and adjustment procedures and service calls. Recognize safety information. This is the safety-alert symbol. When you see this symbol on the furnace and in instructions or manuals, be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. These instructions cover minimum requirements and conform to existing national standards and safety codes. In some instances, these instructions exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices. We require these instructions as a minimum for a safe installation. Table 1–Minimum Clearances To Combustible Materials (In.) UNIT SIZE 045 AND 070 090-155 Single-Wall Vent 1 0 Type B-1 Double-Wall Vent 0 0 Back 0 0 Plenum Top 1 1 Vent Single-Wall Vent 6 6 Type B-1 Double-Wall Vent 1 1 Front Single-Wall Vent 6 6 Type B-1 Double-Wall Vent 3 3 Service 30 30 Sides NOTES.