CGA 2.3 : M98

PART 1 CONSTRUCTION
   1.1 Scope
   1.2 General Construction and Assembly
   1.3 Materials
   1.4 Polymeric Materials in Air Handling Compartments
   1.5 Casings, External Parts, and Openings
   1.6 Accessibility
   1.7 Gas Supply Lines
   1.8 Orifice Spuds and Orifice Fittings
   1.9 Combustion Air Supply and Control
   1.10 Main Burners and Flame Spreaders
   1.11 Automatic Gas Ignition Systems and Pilot Filters
   1.12 Gas Flow Controls
   1.13 Limit and Fan Controls
   1.14 Condensate Disposal
   1.15 Draft Hoods, Flue Connections and Integral Venting
        Systems
   1.16 Automatic Vent Damper Devices
   1.17 Motors and Blowers
   1.18 Electrical Equipment and Wiring
   1.19 Protection of Service Personnel
   1.20 Furnaces for Installation Downstream from
        Refrigeration Systems
   1.21 Cooling Sections of Furnaces with Cooling Units
   1.22 Enclosed Furnaces
   1.23 Instructions
   1.24 UserÆs Information Manual
   1.25 Marking
PART 2 PERFORMANCE
   2.1 General
   2.2 Basic Test Arrangements
   2.3 Test Ducts and Plenums
   2.4 Test Gases
   2.5 Test Pressures and Burner Adjustments
   2.6 Static Pressure and Air Flow Adjustments
   2.7 Category Determination
   2.8 Combustion
   2.9 Burner Operating Characteristics
   2.10 Pilot Burners and Safety Shutoff Devices
   2.11 Direct Ignition Systems
   2.12 Flame Rollout Safety Shut-off Means
   2.13 Manifold and Control Assembly Capacity
   2.14 Corrosion Resistance
   2.15 Flue Gas Temperature
   2.16 Allowable Heating Element Temperatures
   2.17 Flue Gas Baffle Temperatures
   2.18 Main Burner and Flame Spreader Temperatures
   2.19 Blocked Vent Shutoff System
   2.20 Draft Hoods
   2.21 Automatic Vent Damper Devices
   2.22 Draft Tests for Furnaces Not Equipped with Draft
        Hoods
   2.23 Filters
   2.24 Allowable Air Temperatures
   2.25 Wall, Floor, and Ceiling Temperatures
   2.26 Temperatures of Furnaces for Line Contact
        Installation
   2.27 Optional Tests of Electrical Components and Parts
   2.28 Safety Circuit Analysis
   2.29 Furnaces for Installation Downstream from
        Refrigeration Systems
   2.30 Enclosed Furnaces
   2.31 Condensate Disposal System(s)
   2.32 Condensate Drain System Located in Blower
        Compartment
   2.33 Venting Systems for Category II, III, or IV
        Furnaces
   2.34 Furnaces Vented Horizontally Through an Outside
        Wall
   2.35 Heating Element Cyclit Test
   2.36 Marking Material Adhesion and Legibiligy
   2.37 Surface Temperatures
   2.38 Thermal Efficiency
PART 3 DIRECT VENT CENTRAL FURNACES - CONSTRUCTION
   3.1 Scope
   3.2 General Construction and Assembly
   3.3 Materials
   3.4 Casings, External Parts, and Openings
   3.5 Accessibility
   3.6 Combustion Air Supply and Control
   3.7 Main Burners and Flame Spreaders
   3.8 Vent-air Intake Pipes
   3.9 Instructions
   3.10 UserÆs Information Manual
   3.11 Marking
PART 4 DIRECT VENT CENTRAL FURNACES - PERFORMANCE
   4.1 General
   4.2 Basic Test Arrangements
   4.3 Allowable Heating Element Temperatures
   4.4 Direct Vent Systems
   4.5 Wall, Floor, and Ceiling Temperatures
   4.6 Temperatures of Furnaces for Line Contact
        Installation
PART 5 RECREATIONAL VEHICLE CENTRAL FURNACES -
        CONSTRUCTION
   5.1 Scope
   5.2 General Construction and Assembly
   5.3 Accessibility
   5.4 Gas Supply Lines
   5.5 Appliance Main Gas Valve
   5.6 Vent-air Intake Pipes
   5.7 Electrical Equipment and Wiring
   5.8 Instructions
   5.9 UserÆs Information Manual
   5.10 Marking
PART 6 RECREATIONAL VEHICLE CENTRAL FURNACES -
        PERFORMANCE
   6.1 General
   6.2 Basic Test Arrangements
   6.3 Burner Operating Characteristics
   6.4 Pilot Burners and Safety Shutoff Devices
   6.5 Direct Ignition Systems
   6.6 Wall, Floor, and Ceiling Temperatures
PART 7 CENTRAL FURNACES FOR OUTDOOR INSTALLATION -
        CONSTRUCTION
   7.1 Scope
   7.2 General Construction and Assembly
   7.3 Casings, External Parts and Openings
   7.4 Accessibility
   7.5 Combustion Air Supply and Control
   7.6 Main Burners and Flame Spreaders
   7.7 Integral Venting Systems
   7.8 Instructions
   7.9 Marking
PART 8 CENTRAL FURNACES FOR OUTDOOR INSTALLATION -
        PERFORMANCE
   8.1 General
   8.2 Basic Test Arrangements
   8.3 Test Ducts and Plenums
   8.4 Wall, Floor and Ceiling Temperatures
   8.5 Operational Tests of Electrical Components and
        Parts
   8.6 Wind and Rain Operation
   8.7 Marking Material Adhesion and Legibility
PART 9 EXHIBITS
EXHIBIT A. Outline of Lighting Instructions for Appliances
           Equipped with Continuous Pilots
EXHIBIT B. Outline of Operating Instructions for Appliances
           Equipped with Intermittent Pilot or Interrupted
           Pilot Systems
EXHIBIT C. Outline of Operating Instructions for Appliances
           Equipped with Direct Ignition Systems
EXHIBIT D. Outline of Operating Instructions for Appliances
           for Recreational Vehicle Installation Only
           Equipped with Continuous Pilots
EXHIBIT E. Outline of Operating Instructions for Appliances
           for Recreational Vehicle Installation Only
           Equipped with Intermittent Pilot or Interrupted
           Pilot Systems
EXHIBIT F. Outline of Operating Instructions for Appliances
           for Recreational Vehicle Installation Only
           Equipped with Direct Ignition Systems
EXHIBIT G. Corrosion Resistance Criteria and Test Method
EXHIBIT H. (Optional) Provisions for Listed Gas Appliance
           Conversion Kits
EXHIBIT I. Flue Loss Calculations
EXHIBIT J. Jacket Loss Calculations
EXHIBIT K. Items Unique to One Country
EXHIBIT L. List of Reference Standards
PART 10 MANUFACTURING AND PRODUCTION TESTS
PART 11 DEFINITIONS
PART 12 APPENDICES
Appendix A. Recommended Wire Color Usage
Appendix B. Pertinent References to ANSI Y14.15
Appendix C. Wire Color Designations
Appendix D. Preferred Graphic Symbols of Commonly Used Items,
            Extracted from ANSI/IEEE Standard 315, Graphic
            Symbols for Electrical and Electronics Diagrams,
            and Abbreviations for These Items
Appendix E. Sample Failure Modes and Effects Analysis for
            Component Miswiring
Appendix F. Combustion Air Quality (List of Contaminants),
            Sample List of Contaminants to Be Avoided
Appendix G. Table of Conversion Factors