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    UL 296-2003 UL Standard for Safety Oil Burners (Tenth Edition Reprint with Revisions Through and Including June 11 2015)《燃油炉》.pdf

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    UL 296-2003 UL Standard for Safety Oil Burners (Tenth Edition Reprint with Revisions Through and Including June 11 2015)《燃油炉》.pdf

    1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 296 Oil BurnersUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DI

    2、STRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Oil Burners, UL 296 Tenth Edition, Dated September 11, 2003 Summary of Topics This revision to UL 296 is being issued to remove the reference to the withdrawal date of UL 873 and to address universal upkeep of UL Standards for Safety.

    3、These revisions are considered to be non-substantive and not subject to ULs STP process. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and ar

    4、e followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical ph

    5、otocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any speci

    6、al, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In

    7、no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, o

    8、r judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or oth

    9、er elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. SEPTEMBER

    10、 17, 2013 UL 296 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 17, 2013 UL 296 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 11, 20

    11、03 (Title Page Reprinted: September 17, 2013) 1 UL 296 Standard for Oil Burners First Edition May, 1927 Second Edition January, 1934 Third Edition December, 1955 Fourth Edition May, 1959 Fifth Edition April, 1973 Sixth Edition September, 1974 Seventh Edition August, 1980 Eighth Edition February, 198

    12、9 Ninth Edition June, 1994 Tenth Edition September 11, 2003 This ANSI/UL Standard for Safety consists of the Tenth edition including revisions through September 17, 2013. The most recent designation of ANSI/UL 296 as an American National Standard (ANSI) occurred on June 15, 2011. ANSI approval for a

    13、 standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 296 on January 27, 1992. The publication of revised pages or a new edition of this Standard will not invalidate the DoD adoption. Comments or propos

    14、als for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of

    15、a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 296-2011UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPR

    16、ODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 15, 2011 OIL BURNERS - UL 296 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .7 2 Units of Measurements 7 3 Components 7 3A Undated

    17、 References .8 4 Glossary .8 CONSTRUCTION MECHANICAL 5 General .11 6 Servicing 12 7 Assembly .13 8 Bases .14A 9 Fan Housings and Air Tubes .14B 10 Fire Pots and Vaporizers .14B 11 Combustion Air Controls .15 12 Prepurge and Post-Purge 18 13 Draft Regulators 18 14 Strainers .18 15 Constant-Level Devi

    18、ces .22 16 Floats 22A 17 Fittings, and Piping and Tubing .22A 18 Valves .24 19 Stuffing Boxes 25 20 Gauges 27 21 Gas Pilots .27 22 Manually-Lighted Burners 27 23 Antiooding Devices 28 CONSTRUCTION ELECTRICAL 24 Servicing and Adjustment 29 25 Ignition Systems 30 26 Electric High-Tension Ignition 31 2

    19、6.1 Assembly .31 26.2 Electrode and bus bars .31 26.3 Insulators .32 26.4 Leads .32 26.5 Transformers 33 27 Electric Hot-Wire Ignition 33 28 Control Applications .33 29 Primary Safety Controls .34 30 General Components and Devices 36 31 Field Wiring 37 31.1 General .37 31.2 Leads and terminals .38A

    20、32 Internal Wiring 39 32.1 General .39 32.2 Methods 40 JUNE 15, 2011 OIL BURNERS - UL 296 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 32.3 Short circuit protection 42 33 Overcurrent Protection of High-Voltage Control-Circuit Conductors

    21、42 33.1 General .42 33.2 Direct-connected high-voltage control circuit .43 33.3 Tapped high-voltage control circuits 43 33.4 Overcurrent-protective devices .44 34 Overcurrent Protection of Transformers 45 34.1 High-voltage transformers .45 34.2 Thermal protection .45 34.3 Overcurrent protection 46 3

    22、4.4 Low-voltage transformers 46 34.5 Overcurrent protective devices .47 35 Separation of Circuits .47 36 Accessibility 49 37 Bonding for Grounding 51 38 Mounting of Electrical Components .54 39 Electrical Enclosures 54 39.1 General .54 39.2 Burners having a minimum input in excess of 3 gph (11.4 L/h

    23、) .58 39.3 Burners having a minimum input 3 gph (11.4 L/h) or less .60 39.4 Doors and covers 63 39.5 Field-wiring system connections 65 40 Motors and Motor Overload Protection 66 41 Switches and Controllers 70 42 Capacitors 70A 43 Electrical Insulating Material 70A 44 Spacings High-Voltage Circuits

    24、70B 45 Spacings Low-Voltage Circuits 73 46 Combination Gas-Oil Burners 73 PERFORMANCE 47 General 74 48 Measurements .74 49 Test Voltage .75 50 Combustion Tests 75 50.1 General .75 50.2 Mechanical-atomizing burners test no. 1 .76 50.3 Vaporizing burners test no. 2 77 51 Combustion Air Failure Test Te

    25、st No. 3 79 52 Interruption of Atomization Test Test No. 4 .80 53 Undervoltage Test Test No. 5 80 54 Power Interruption Test Test No. 6 81 55 Temperature Test Test No. 7 .82 56 Ignition Tests, Multiple Igniters .82 57 Ignition Tests, Electric High-Tension 82 57.1 Reduced voltage cold oil test no. 8

    26、.82 57.2 Combustion detectors test no. 9 86 58 Ignition Test, Electric Hot-Wire .86 58.1 Reduced voltage test no. 10 .86 58.2 Reduced voltage test no. 11 .87 58.3 Endurance test no. 12 87 58.4 Component temperatures test no. 13 .88 JUNE 15, 2011 OIL BURNERS - UL 296 4UL COPYRIGHTED MATERIAL NOT AUTH

    27、ORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 59 Ignition Tests, Gas 88 59.1 Reduced voltage test no. 14 .88 59.2 Pilot supervision test no. 15 89 59.3 Flame failure response test no. 16 89 59.4 Stability test no. 17 .90 60 Ignition Test, Gas-Electric Test No. 18 .90 61

    28、Ignition Test, Gas-Electric High-Tension .90 61.1 Reduced voltage cold oil test no. 19 90 62 Ignition Tests, Gas-Electric Hot-Wire 91 62.1 Reduced voltage test no. 20 .91 62.2 Reduced voltage cold oil test no. 21 92 63 Ignition Tests, Manual .92 63.1 Time for ignition test no. 22 92 63.2 Stability o

    29、f ignition test no. 23 93 63.3 Ignition ash test no. 24 .93 63.4 Reduced voltage (electric or gas-electric) test no. 25 .94 64 Ignition Test, Multiple-Atomizer Burner Test No. 26 .95 65 Ignition Tests, Multiple-Vaporizer Burner Test No. 27 96 66 Return of Ignition Test No. 27A .96 67 Seepage and Bur

    30、noff Test Test No. 28 97 68 Dielectric Voltage-Withstand Test Test No. 29 97 69 Short Circuit Test Test No. 30 98 70 Overload Test, High-Voltage Transformers 101 71 Burnout Test, High-Voltage Transformers .101 MANUFACTURING AND PRODUCTION TESTS 72 General 102 MARKING 73 General .102A 74 Instructions

    31、 .105 APPENDIX A JUNE 15, 2011 OIL BURNERS - UL 296 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This page intentionally left blank. JANUARY 27, 2006 OIL BURNERS - UL 296 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O

    32、R DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover oil burners intended for ring appliances and devices such as boilers; central, oor, wall, and special furnaces; storage tank water, air, and direct-red air heater units; and ovens. These burners are required

    33、to be equipped with automatic primary safety controls to restrict abnormal discharge of oil at the burner in case of ignition failure or ame failure. 1.2 Requirements for the installation and use of oil-burning equipment are included in the National Fire Protection Association Standard for Oil-Burni

    34、ng Equipment, NFPA 31. These heaters are intended for installation in accordance with codes such as the BOCA National Mechanical Code, the Standard Mechanical Code, and the Uniform Mechanical Code. 1.3 Deleted January 27, 2006 2 Units of Measurements 2.1 Values stated without parentheses are the req

    35、uirement. Values in parentheses are explanatory or approximate information. 3 Components 3.1 Except as indicated in 3.2, a component of a product covered by this standard shall comply with the requirements for that component. See the individual sections of this Standard for component requirements. 3

    36、.1 revised June 15, 2011 3.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 3.3 A component

    37、shall be used in accordance with its rating established for the intended conditions of use. 3.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not ex

    38、ceeding specied limits, and shall be used only under those specic conditions. JUNE 15, 2011 OIL BURNERS - UL 296 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3A Undated References 3A.1 Any undated reference to a code or standard appearin

    39、g in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 3A.1 added January 27, 2006 4 Glossary 4.1 For the purpose of this standard, the following denitions apply. 4.2 AIR SHUTTER An adjustable device for varying the size of the air in

    40、let or inlets regulating primary or secondary air. 4.3 ANTIFLOODING DEVICE A primary safety control that causes the fuel ow to be shut off upon a rise in fuel level or upon receiving excess fuel, and that operates before the hazardous discharge of fuel can occur. 4.4 BURNER, AUTOMATICALLY-LIGHTED On

    41、e where fuel to the main burner is turned on and ignited automatically. 4.5 BURNER, MANUALLY-LIGHTED One where fuel to the main burner is turned on only by hand and ignited under supervision. 4.6 BURNER, MECHANICAL-ATOMIZING TYPE A power-operated burner that prepares and delivers the oil and all or

    42、part of the air by mechanical process in controllable quantities for combustion. Some examples are air and steam atomizing, high and low pressure atomizing, horizontal rotary, vertical rotary atomizing, and vertical rotary wall-ame burners. 4.7 BURNER, MECHANICAL-DRAFT TYPE A burner that includes a

    43、power-driven fan, blower, or other mechanism as the principal means for supplying air for combustion. 4.8 BURNER, NATURAL-DRAFT TYPE A burner that depends principally upon the natural draft created in the ue to induce into the burner the air required for combustion. 4.9 BURNER, VAPORIZING TYPE A bur

    44、ner consisting of an oil-vaporizing bowl or other receptacle to which liquid fuel may be fed in controllable quantities; the heat of combustion being used to vaporize the fuel, with provision for admitting air and mixing it with the oil vapor in combustible proportions. 4.10 CENTRAL HEATING APPLIANC

    45、E A stationary indirect-red vented appliance comprising the following classes: boilers, central furnaces, oor furnaces, and recessed heaters. A oor-mounted unit heater to be connected to a duct system is classied also as a central heating appliance. 4.11 CONSTANT-LEVEL VALVE A device for maintaining

    46、 within a reservoir a constant level of fuel for delivery to the burner. 4.12 CONTROL A device that functions to regulate the fuel, air, water, or electrical supply to the controlled equipment. It may be automatic, semiautomatic, or manual. 4.13 CONTROL, LIMIT A safety control responsive to changes

    47、in liquid level, pressure, or temperature, normally set beyond the intended operating range of the controlled equipment to limit its operation. JANUARY 27, 2006 OIL BURNERS - UL 296 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4.14 CONTR

    48、OL, OPERATING A control, other than a safety control or interlock, to start or regulate input according to demand, and to stop or regulate input on satisfaction of demand. Operating controls may also actuate auxiliary equipment. 4.15 CONTROL, SAFETY An automatic control, such as a relay or switch us

    49、ed in conjunction with other auxiliary equipment to form a safety control system that is relied upon to reduce the risk of re, electric shock, or injury to persons. JANUARY 27, 2006 OIL BURNERS - UL 296 8AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 27, 2006 OIL BURNERS - UL 296 8B No Text on This PageUL COPYRIGHTED MATERIAL


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