PART I. CONSTRUCTION
1.1 Scope
1.2 General Construction
1.3 Assembly
1.4 Accessibility
1.5 Combustion Air and Ventilation
1.6 Main Burners
1.7 Primary Air Adjustment Means
1.8 Orifice Spuds and Orifice Fittings
1.9 Automatic Gas Ignition Systems
1.10 Flame Spreaders
1.11 Manually Gas Valves
1.12 Gas Supply Lines
1.13 Bleeds and Vents
1.14 Automatic Valves
1.15 Gas Appliance Pressure Regulators
1.16 Adjustment for Minimum Input Rating
1.17 Pilot Gas Filters
1.18 Fan and Limit Controls
1.19 Thickness of Materials
1.20 Joints in Heating Surfaces
1.21 Floor Furnace Openings
1.22 Flue Connections
1.23 Draft Hoods
1.24 Automatic Vent Damper Devices
1.25 Observation Doors
1.26 Air Circulation in Floor Furnaces
1.27 Electrical Equipment and Wiring
1.28 Motors and Blowers
1.29 Air Filters
1.30 Instructions
1.31 Marking
PART II. PERFORMANCE
2.1 General
2.2 Test Gases
2.3 Inlet Test Pressures and Burner Adjustments
2.4 Floor Registers
2.5 Combustion
2.6 Burner Operating Characteristics
2.7 Noise of Operation
2.8 Pilot Operating Characteristics
2.9 Pilot Burners and Safety Shutoff Devices
2.10 Direct Ignition Systems
2.11 Flame Spreader Temperatures
2.12 Nonload-Bearing Flue Gas Baffle Temperatures
2.13 Filters
2.14 Allowable Air Temperatures
2.15 Allowable Register Temperatures
2.16 Manual Gas Valves
2.17 Gas Appliance Pressure Regulators
2.18 Automatic Valves
2.19 Manifold and Control Assembly Capacity
2.20 Wall and Floor Temperatures
2.21 Flue Gas Temperature
2.22 Temperature of Handled Parts
2.23 Draft Hoods
2.24 Draft Tests for Floor Furnaces Equipped with Power
      Burners
2.25 Automatic Vent Damper Devices
2.26 Allowable Heating Element and Load-Bearing Flue
      Gas Baffle Temperatures
2.27 Marking Material Adhesion and Legibility
Part III. MANUFACTURING AND PRODUCTION TESTS
Part IV. DEFINITIONS
Appendix A Pertinent References to ANSI Y14.15-1966 (R1973)
Appendix B Wire Color Designations
Appendix C Recommended Wire Color Usage
Appendix D Preferred Graphic Symbols of Commonly Used
            Items, Extracted from ANSI/IEEE Standard
            315-1975, Graphic Symbols for Electrical and
            Electronics Diagrams, and Abbreviations for
            These Items
Appendix E Method for Determining Allowable Register
            Temperatures
Figure E1. Temperature Rise as a Function of Physical
            Characteristics of Materials
Figure E2. Corrected Values for Thermal Conductivity
APPENDIX F Table of Conversion Factors