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ANSI Z21.44 : 1994
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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GAS-FIRED GRAVITY AND FAN-TYPE DIRECT VENT WALL FURNACES
15-03-2022
12-01-2013
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 Manual Gas Valves
1.12 Gas Supply Lines
1.13 Bleeds and Vents
1.14 Thermostats
1.15 Automatic Valves
1.16 Gas Appliance Pressure Regulators
1.17 Adjustment of Minimum Input Rating
1.18 Pilot Gas Filters
1.19 Fan and Limit Controls
1.20 Thickness of Materials
1.21 Joints in Heating Surfaces
1.22 Wall Furnace Openings
1.23 Vent-Air Intake Pipes
1.24 Electrical Equipment and Wiring
1.25 Motors and Blowers
1.26 Air Filters
1.27 Cooling Section of Wall Furnace with Cooling Unit
1.28 Heating Element Located Downstream from
Refrigeration Coil
1.29 Instructions
1.30 Marking
PART II. PERFORMANCE
2.1 General
2.2 Test Gases
2.3 Test Pressures and Burner Adjustments
2.4 Combustion
2.5 Burner Operating Characteristics
2.6 Noise of Operation
2.7 Pilot Operating Characteristics
2.8 Automatic Gas Ignition Systems
2.9 Direct Ignition Systems
2.10 Main Burner and Flame Spreader Temperatures
2.11 Nonload-Bearing Flue Gas Baffle Temperatures
2.12 Thermal Efficiency
2.13 Filters
2.14 Manual Gas Valves
2.15 Gas Appliance Pressure Regulators
2.16 Thermostats
2.17 Automatic Valves
2.18 Manifold and Control Assembly Capacity
2.19 Wall, Floor and Ceiling Temperatures
2.20 Temperature at Discharge Air Opening, and Surface
Temperatures
2.21 Evaluation of Clothing Ignition Potential
2.22 Wind Tests
2.23 Vent and Vent-Air Intake Terminals
2.24 Joints in Direct Vent Systems
2.25 Allowable Heating Element and Load-Bearing Flue
Gas Baffle Temperatures
2.26 Cooling Section of Wall Furnace with Cooling Unit
2.27 Heating Element Located Downstream from
Refrigeration Coil
2.28 Marking Material Adhesion and Legibility
Exhibit A - Flue Loss Calculations
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 Table of Conversion Factors
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