ASTM E1509-12(2017)

Standard Specification for Room Heaters, Pellet Fuel-Burning Type

ABSTRACT
This specification covers performance requirements, test methods, and marking requirements for automatic feed, pellet fuel-burning room heaters that are intended to burn wood pellets or other suitable solid fuel. Pellet fuel-burning room heaters covered by this specification are acceptable for use in manufactured homes when installed in accordance with the Manufactured Home Construction and Safety Standards published by the Department of Housing and Urban Development (HUD). The heaters shall be subject to glazing water shock test, glazing impact test, rain test, solubility test, and drop test.
SCOPE
1.1 This specification covers performance requirements, test methods, and marking requirements for automatic feed, pellet fuel-burning room heaters that are intended to burn wood pellets or other suitable solid fuel. These room heaters shall be drafted by forced or natural means.  
1.2 Exhaust venting systems and associated externally mounted draft inducers are not evaluated by this specification unless they are part of an engineered system provided as part of the room heater. Parts specifically evaluated and determined to be acceptable for use with pellet fuel-burning room heaters are required to be specified in the room heater manufacturer’s instructions and are to be used in evaluating the room heater.  
1.3 Pellet fuel-burning room heaters covered by this specification are intended for installation in accordance with the applicable requirements of NFPA 211 and in accordance with the applicable building and mechanical codes.  
1.4 Pellet fuel-burning room heaters covered by this specification are acceptable for use in manufactured homes when installed in accordance with the Manufactured Home Construction and Safety Standards published by the Department of Housing and Urban Development (HUD). See 24 CFR 3280.  
1.5 The terms “product” or “room heater,” as used in this specification, refer to all pellet fuel-burning room heaters or any part thereof covered by the requirements of this specification, unless specifically noted otherwise.  
1.6 No information provided in this specification is intended to prevent the use of other methods or devices, provided that sufficient technical data are submitted to the authority having jurisdiction to demonstrate that the proposed method or device is equivalent in quality, strength, fire endurance, effectiveness, durability, and safety to that prescribed in this specification.  
1.7 The notes incorporated into this specification are not prescriptive requirements. They are given for clarification and informational purposes only.  
1.8 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.9 The following safety hazards caveat pertains only to the test methods portion, Section 10, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Aug-2017
• ICS: 97.100.30 - Solid fuel heaters
• Technical Committee: E06 - Performance of Buildings
• Drafting Committee: E06.54 - Solid Fuel Burning Appliances

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E1509 −12 (Reapproved 2017)
Standard Specification for
Room Heaters, Pellet Fuel-Burning Type
This standard is issued under the fixed designation E1509; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.8 Thevaluesstatedininch-poundunitsaretoberegarded
as standard. The values given in parentheses are mathematical
1.1 Thisspecificationcoversperformancerequirements,test
conversions to SI units that are provided for information only
methods, and marking requirements for automatic feed, pellet
and are not considered standard.
fuel-burning room heaters that are intended to burn wood
1.9 The following safety hazards caveat pertains only to the
pellets or other suitable solid fuel.These room heaters shall be
test methods portion, Section 10, of this specification: This
drafted by forced or natural means.
standard does not purport to address all of the safety concerns,
1.2 Exhaust venting systems and associated externally
if any, associated with its use. It is the responsibility of the user
mounted draft inducers are not evaluated by this specification
of this standard to establish appropriate safety, health, and
unless they are part of an engineered system provided as part
environmental practices and determine the applicability of
oftheroomheater.Partsspecificallyevaluatedanddetermined
regulatory limitations prior to use.
to be acceptable for use with pellet fuel-burning room heaters
1.10 This international standard was developed in accor-
are required to be specified in the room heater manufacturer’s
dance with internationally recognized principles on standard-
instructions and are to be used in evaluating the room heater.
ization established in the Decision on Principles for the
1.3 Pellet fuel-burning room heaters covered by this speci-
Development of International Standards, Guides and Recom-
fication are intended for installation in accordance with the
mendations issued by the World Trade Organization Technical
applicable requirements of NFPA 211 and in accordance with
Barriers to Trade (TBT) Committee.
the applicable building and mechanical codes.
2. Referenced Documents
1.4 Pellet fuel-burning room heaters covered by this speci-
2.1 ASTM Standards:
fication are acceptable for use in manufactured homes when
C1057Practice for Determination of Skin ContactTempera-
installedinaccordancewiththeManufacturedHomeConstruc-
ture from Heated Surfaces Using a Mathematical Model
tion and Safety Standards published by the Department of
and Thermesthesiometer
Housing and Urban Development (HUD). See 24 CFR 3280.
D3211Test Method for Relative Density of Black Smoke
1.5 The terms “product” or “room heater,” as used in this
(Ringelmann Method) (Withdrawn 1990)
specification, refer to all pellet fuel-burning room heaters or
E136Test Method for Behavior of Materials in a Vertical
any part thereof covered by the requirements of this
Tube Furnace at 750°C
specification, unless specifically noted otherwise.
E631Terminology of Building Constructions
1.6 Noinformationprovidedinthisspecificationisintended
2.2 ASME Standard:
to prevent the use of other methods or devices, provided that
ASME B36.10MWelded and Seamless Wrought Steel Pipe
sufficient technical data are submitted to the authority having
2.3 U.S. Code of Federal Regulations—Housing and Urban
jurisdiction to demonstrate that the proposed method or device
Development:
is equivalent in quality, strength, fire endurance, effectiveness,
24 CFR 3280Manufactured Home Construction and Safety
durability, and safety to that prescribed in this specification.
Standards
1.7 The notes incorporated into this specification are not
prescriptive requirements. They are given for clarification and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
informational purposes only.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
The last approved version of this historical standard is referenced on
This specification is under the jurisdiction of ASTM Committee E06 on www.astm.org.
Performance of Buildings and is the direct responsibility of Subcommittee E06.54 Available from American Society of Mechanical Engineers (ASME), ASME
on Solid Fuel Burning Appliances. International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
Current edition approved Sept. 1, 2017. Published September 2017. Originally www.asme.org.
approved in 1993. Last previous edition approved in 2012 as E1509–12. DOI: Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
10.1520/E1509-12R17. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E1509−12 (2017)
2.4 Federal Communications Commission: 3.2.6 floor protector (stove mat)—the noncombustible ma-
47 CFR Part 15, Subpart BFCC Regulations terial applied to the combustible floor area located beneath the
product and extending beyond the front and sides and to the
2.5 NFPA Standards:
rear of the product. The area is to be of the dimensions
NFPA 70National Electrical Code
specified in the installation instructions.
NFPA 211Chimneys, Fireplaces, Vents and Solid-Fuel
Burning Appliances
3.2.7 grate—a frame for supporting the fuel within a room
heater.
2.6 UL Standards:
UL 103Chimneys, Factory-Built, Residential Type and 3.2.7.1 Discussion—The grate in a pellet fuel-burning room
heater is also referred to as a burn pot or fire pot.
Building Heating Appliance
UL 181Factory Made Air Ducts and Connectors
3.2.8 hearth—the floor area within the fire chamber of a
UL 641Low-Temperature Venting Systems, Type L
room heater.
UL 907Fireplace Accessories
3.2.9 hopper—an on-unit fuel reservoir that is gravity feed-
UL 969Marking and Labeling Systems
ing through a bottom outlet to a controllable pellet fuel feed
UL 1482Room Heaters, Solid Fuel Type
assembly.
2.7 ULC Standards:
3.2.10 listed—equipment or materials included in a list,
ULC S609Low Temperature Vents, Type L
publishedbyanorganizationacceptabletotheauthorityhaving
ULC S629M650°C Factory-Built Chimneys
jurisdiction and concerned with product evaluation, that main-
2.8 ICES Standard:
tains periodic inspection of the production of listed equipment
ICES-003Digital Apparatus
or materials and whose listing states either that the equipment
2.9 PFI Standard:
or material meets the appropriate standards or has been tested
PFIStandardSpecificationforResidential/CommercialDen-
and found to be suitable for use in a specified manner.
sified Fuel, June 1, 2011
3.2.11 noncombustible material—a material that, in the
form in which it is used and under the conditions anticipated,
3. Terminology
willnotignite,burn,supportcombustion,orreleaseflammable
3.1 Definitions—Terms used in this test method are defined
vapors when subjected to fire or heat. Materials reported as
in Terminology E631.
passing the test, when tested in accordance with Test Method
3.2 Definitions of Terms Specific to This Standard:
E136, shall be considered noncombustible materials.
3.2.1 chimney—oneormorepassageways,verticalornearly
3.2.12 pellet fuel—a solid processed biomass fuel of speci-
so,forconveyingfluegasestotheoutsideatmospheretowhich
fied size and composition capable of being fed to the room
the appliance exhaust is capable of being connected.
heater combustion system at a controlled rate.
3.2.2 combustible material—material made of or surfaced
3.2.13 room heater, pellet fuel type—a closed combustion,
with wood, compressed paper, plant fibers, plastics, or other
exhaust venting system connected, pellet fuel-burning room
materialthatwilligniteandburn,whetherflameproofedornot,
heater incorporating a fuel feed control mechanism.
or whether plastered or unplastered.
3.2.3 combustion air control—a valve or plate or motor
4. Materials
speed control, operated manually or automatically, that regu-
4.1 The materials used shall be free of defects that will
lates the draft or flow of flue gases or inlet combustion air.
affect the performance and maintainability of individual com-
3.2.4 connector pipe—a flue pipe that is part of the exhaust
ponents of the overall assembly.
venting system that ducts combustion products from the room
4.2 A room heater and an exhaust venting system, if
heater to a chimney.
provided, shall be made of noncombustible corrosion-resistant
3.2.5 exhaust venting system—a flue pipe, either horizontal,
materials. Metals shall not be used in combinations that have
vertical, or a combination of horizontal and vertical, that ducts
thepotentialtocausegalvanicactionatanylocationwithinthe
combustion products from the room heater to the outside.
assembly.
3.2.5.1 Discussion—An exhaust venting system consists of
4.3 The minimum metal thickness of room heater nondeco-
alistedventsystem,orconnectorpipeandalistedfactory-built
rative parts, including any coatings, shall comply with the
chimney, or a masonry chimney, or an engineered vent system
requirements given in Table 1.
provided as part of the pellet fuel-burning room heater.
TABLE 1 Minimum Metal Thickness
Available from National Fire Protection Association (NFPA), 1 Batterymarch
in. mm
Park, Quincy, MA 02169-7471, http://www.nfpa.org.
Aluminum-coated steel Type T1-40 (Regular, 0.018 0.46
Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., 2 2
0.40 oz/ft (0.12 kg/m )
Northbrook, IL 60062, http://www.ul.com.
Aluminum alloys 0.016 0.41
Available from Underwriters Laboratories of Canada, 7 Underwriters Road,
Cast iron 0.125 3.17
Toronto, ON Canada M1R 3B4, http://www.ul.com/canada.
Galvanized steel G60 coating class 0.018 0.45
Available from Industry Canada, C.D. Howe Building, 235 Queen Street,
Porcelain-enameled steel 0.032 0.81
Ottawa, Ontario K1A 0H5, Canada, http://www.ic.gc.ca/.
Stainless steel 0.012 0.30
Available from Pellet Fuels Institute (PFI), 2150 N 107th St., Suite 205, Steel, uncoated or painted 0.042 1.07
Seattle, WA 98133, http://pelletheat.org.
E1509−12 (2017)
4.4 Aluminum alloys containing more than 1% magnesium 5.1.3 Each part or assembly shall be constructed for attach-
shall not be used if the reflectivity of the material is employed ment of one to the other without requiring alteration, cutting,
to reduce fire risk. threading, drilling, welding, or similar tasks by the installer.
5.1.3.1 Exception—If an assembly or component part is
4.5 The fire chamber and other parts of the room heater that
intended to be cut to length or to be fitted by the installer,
are in contact with flue gases and are visible after installation
means shall be provided for joining any altered part to a
shall be of material having the durability and resistance to fire
companionpartorassembly.Allfastenersrequiredtocomplete
and heat equivalent to fireclay tile, Series 300 or 400 stainless
the assembly shall be provided with the product by the
steel, aluminum-coated steel, cast iron, or 0.042-in. (1.07-mm)
manufacturer. Drilling is acceptable if the drilling operation
thick unprotected or painted steel.
does not weaken the assembly or drill into the fire chamber,
NOTE 1—Cast iron and unprotected and painted sheet steel complying
andthesizeoftherequireddrillbitisspecifiedandinstructions
with the requirements of Footnotes K and L of Table 2 comply with the
describe the locations to be drilled clearly, such as by the use
requirements of 4.5.
of templates, drawings, descriptions, or the like.
4.6 If required, chimney connectors shall be of materials
5.1.4 Insulating materials shall be an integral part of the
andthicknessescomplyingwiththerequirementsofNFPA211
assembly if required to protect combustible parts of the
and applicable building and mechanical codes.
building when the room heater is installed in accordance with
4.7 Thermal insulation material shall be of metal or mineral
the manufacturer’s instructions.
base. Asbestos materials shall not be used.
5.1.4.1 Exception—If fire chamber materials are packaged
and shipped with the heater, the installation instructions shall
4.8 Thermal insulation shall comply with the following
provide for a description of the method of placement of this
conditions when the room heater is tested in accordance with
material, and the heater shall be marked with an adhesive-
the following requirements:
backed warning marking indicating that the material is to be
4.8.1 The products resulting from the combustion or vola-
installed before firing.
tilization of any combustible binder shall be discharged to the
exhaust venting system. 5.1.5 Two or more parts or subassemblies that are required
4.8.2 Insulating material shall remain in the intended posi- orintendedtobearadefiniterelationshiptoeachothershallbe
tion. arranged and constructed so as to permit them to be incorpo-
4.8.3 The insulation shall not show evidence of softening, ratedintothecompleteassemblywithoutneedforalterationor
melting, or deterioration in a manner that will inhibit its alignment and only in the correct relationship with each other,
function or create a hazard. or they shall be assembled and shipped from the factory as a
single component.
4.9 Thermal insulation, other than firebox refractory
5.1.6 Parts of a room heater, such as support legs, radiation
materials, shall be protected from contact with combustion
shields,andthelike,thatarenecessarytolimittemperatureson
products.
adjacent construction shall be factory-attached, or they shall
4.10 Thermal insulation that is not self-supporting shall be
comply with all of the following requirements:
applied to solid surfaces so that the insulation does not sag in
5.1.6.1 The parts shall be shipped with the room heater, or
any way that will interfere with the function of the insulation.
they shall be marked with the name or trademark of the
Anadhesiveorcementusedtoattachsuchmaterialshallretain
manufacturer or private labeler, with a catalog number or
its adhesive qualities at any temperature the adhesive attains
equivalent designation, and with the type of equipment with
when tested in accordance with these requirements and at 0°F
whichtheyareintendedtobeused.Theassociatedheatershall
(−17.8°C).
be marked to indicate the catalog number, or equivalent
4.11 A water-absorbing insulating material shall be pro-
designationofsuchapart,andthenameofthemanufactureror
tected from wetting by condensation or rain when installed as
private labeler of that part.
intended.
5.1
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1509 − 12 E1509 − 12 (Reapproved 2017)
Standard Specification for
Room Heaters, Pellet Fuel-Burning Type
This standard is issued under the fixed designation E1509; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers performance requirements, test methods, and marking requirements for automatic feed, pellet
fuel-burning room heaters that are intended to burn wood pellets or other suitable solid fuel. These room heaters shall be drafted
by forced or natural means.
1.2 Exhaust venting systems and associated externally mounted draft inducers are not evaluated by this specification unless they
are part of an engineered system provided as part of the room heater. Parts specifically evaluated and determined to be acceptable
for use with pellet fuel-burning room heaters are required to be specified in the room heater manufacturer’smanufacturer’s
instructions and are to be used in evaluating the room heater.
1.3 Pellet fuel-burning room heaters covered by this specification are intended for installation in accordance with the applicable
requirements of NFPA 211 and in accordance with the applicable building and mechanical codes.
1.4 Pellet fuel-burning room heaters covered by this specification are acceptable for use in manufactured homes when installed
in accordance with the Manufactured Home Construction and Safety Standards published by the Department of Housing and Urban
Development (HUD). See 24 CFR 3280.
1.5 The terms “product” or “room heater,” as used in this specification, refer to all pellet fuel-burning room heaters or any part
thereof covered by the requirements of this specification, unless specifically noted otherwise.
1.6 No information provided in this specification is intended to prevent the use of other methods or devices, provided that
sufficient technical data are submitted to the authority having jurisdiction to demonstrate that the proposed method or device is
equivalent in quality, strength, fire endurance, effectiveness, durability, and safety to that prescribed in this specification.
1.7 The notes incorporated into this specification are not prescriptive requirements. They are given for clarification and
informational purposes only.
1.8 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.9 The following safety hazards caveat pertains only to the test methods portion, Section 10, of this specification:This standard
does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the applicability of
regulatory limitations prior to use.
1.10 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
C1057 Practice for Determination of Skin Contact Temperature from Heated Surfaces Using a Mathematical Model and
Thermesthesiometer
D3211 Test Method for Relative Density of Black Smoke (Ringelmann Method) (Withdrawn 1990)
This specification is under the jurisdiction of ASTM Committee E06 on Performance of Buildings and is the direct responsibility of Subcommittee E06.54 on Solid Fuel
Burning Appliances.
Current edition approved Oct. 1, 2012Sept. 1, 2017. Published November 2012September 2017. Originally approved in 1993. Last previous edition approved in 20042012
as E1509 – 04.E1509 – 12. DOI: 10.1520/E1509-12.10.1520/E1509-12R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E1509 − 12 (2017)
E136 Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C
E631 Terminology of Building Constructions
2.2 ASME Standard:
ASME B36.10M Welded and Seamless Wrought Steel Pipe
2.3 U.S. Code of Federal Regulations—Housing and Urban Development:
24 CFR 3280 Manufactured Home Construction and Safety Standards
2.4 Federal Communications Commission:
47 CFR Part 15, Subpart B FCC Regulations
2.5 NFPA Standards:
NFPA 70 National Electrical Code
NFPA 211 Chimneys, Fireplaces, Vents and Solid-Fuel Burning Appliances
2.6 UL Standards:
UL 103 Chimneys, Factory-Built, Residential Type and Building Heating Appliance
UL 181 Factory Made Air Ducts and Connectors
UL 641 Low-Temperature Venting Systems, Type L
UL 907 Fireplace Accessories
UL 969 Marking and Labeling Systems
UL 1482 Room Heaters, Solid Fuel Type
2.7 ULC Standards:
ULC S609 Low Temperature Vents, Type L
ULC S629M 650°C Factory-Built Chimneys
2.8 ICES Standards:Standard:
ICES-003 Digital Apparatus
2.9 PFI Standards:Standard:
PFI Standard Specification for Residential/Commercial Densified Fuel, June 1, 2011
3. Terminology
3.1 Definitions—Terms used in this test method are defined in Terminology E631.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 chimney—one or more passageways, vertical or nearly so, for conveying flue gases to the outside atmosphere to which
the appliance exhaust is capable of being connected.
3.2.2 combustible material—material made of or surfaced with wood, compressed paper, plant fibers, plastics, or other material
that will ignite and burn, whether flameproofed or not, or whether plastered or unplastered.
3.2.3 combustion air control—a valve or plate or motor speed control, operated manually or automatically, that regulates the
draft or flow of flue gases or inlet combustion air.
3.2.4 connector pipe—a flue pipe that is part of the exhaust venting system that ducts combustion products from the room heater
to a chimney.
3.2.5 exhaust venting system—a flue pipe, either horizontal, vertical, or a combination of horizontal and vertical, that ducts
combustion products from the room heater to the outside.
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, ThreeTwo Park Ave., New York, NY 10016-5990,
http://www.asme.org.
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, DLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA
19111-5098, http://dodssp.daps.dla.mil.19111-5094, http://quicksearch.dla.mil.
Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7471, http://www.nfpa.org.
Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Northbrook, IL 60062-2096,60062, http://www.ul.com.
Available from Underwriters’Underwriters Laboratories of Canada, 7 CrouseUnderwriters Road, Scarborough,Toronto, ON Canada MIR3A9, M1R 3B4, http://
www.ul.com/canada.
Available from Industry Canada Web Service Centre, Industry Canada, C.D. Howe Building, 235 Queen Street, Ottawa, Ontario K1AOntario K1A 0H5, Canada.Canada,
http://www.ic.gc.ca/.
Available from Pellet Fuels Institute (PFI), 1901 North Moore Street, Suite 600, Arlington, VA 22209,2150 N 107th St., Suite 205, Seattle, WA 98133,
http://pelletheat.org.
3.2.5.1 Discussion—
An exhaust venting system consists of a listed vent system, or connector pipe and a listed factory-built chimney, or a masonry
chimney, or an engineered vent system provided as part of the pellet fuel-burning room heater.
E1509 − 12 (2017)
3.2.6 floor protector (stove mat)—the noncombustible material applied to the combustible floor area located beneath the product
and extending beyond the front and sides and to the rear of the product. The area is to be of the dimensions specified in the
installation instructions.
3.2.7 grate—a frame for supporting the fuel within a room heater.
3.2.7.1 Discussion—
The grate in a pellet fuel-burning room heater is also referred to as a burn pot or fire pot.
3.2.8 hearth—the floor area within the fire chamber of a room heater.
3.2.9 hopper—an on-unit fuel reservoir that is gravity feeding through a bottom outlet to a controllable pellet fuel feed assembly.
3.2.10 listed—equipment or materials included in a list, published by an organization acceptable to the authority having
jurisdiction and concerned with product evaluation, that maintains periodic inspection of the production of listed equipment or
materials and whose listing states either that the equipment or material meets the appropriate standards or has been tested and found
to be suitable for use in a specified manner.
3.2.11 noncombustible material—a material that, in the form in which it is used and under the conditions anticipated, will not
ignite, burn, support combustion, or release flammable vapors when subjected to fire or heat. Materials reported as passing the test,
when tested in accordance with Test Method E136, shall be considered noncombustible materials.
3.2.12 pellet fuel—a solid processed biomass fuel of specified size and composition capable of being fed to the room heater
combustion system at a controlled rate.
3.2.13 room heater, pellet fuel type—a closed combustion, exhaust venting system connected, pellet fuel-burning room heater
incorporating a fuel feed control mechanism.
4. Materials
4.1 The materials used shall be free of defects that will affect the performance and maintainability of individual components
of the overall assembly.
4.2 A room heater and an exhaust venting system, if provided, shall be made of noncombustible corrosion-resistant materials.
Metals shall not be used in combinations that have the potential to cause galvanic action at any location within the assembly.
4.3 The minimum metal thickness of room heater nondecorative parts, including any coatings, shall comply with the
requirements given in Table 1.
4.4 Aluminum alloys containing more than 1 % magnesium shall not be used if the reflectivity of the material is employed to
reduce fire risk.
4.5 The fire chamber and other parts of the room heater that are in contact with flue gases and are visible after installation shall
be of material having the durability and resistance to fire and heat equivalent to fireclay tile, Series 300 or 400 stainless steel,
aluminum-coated steel, cast iron, or 0.042-in. (1.07-mm) thick unprotected or painted steel.
NOTE 1—Cast iron and unprotected and painted sheet steel complying with the requirements of Footnotes K and L of Table 2 comply with the
requirements of 4.5.
4.6 If required, chimney connectors shall be of materials and thicknesses complying with the requirements of NFPA 211 and
applicable building and mechanical codes.
4.7 Thermal insulation material shall be of metal or mineral base. Asbestos materials shall not be used.
4.8 Thermal insulation shall comply with the following conditions when the room heater is tested in accordance with the
following requirements:
4.8.1 The products resulting from the combustion or volatilization of any combustible binder shall be discharged to the exhaust
venting system.
TABLE 1 Minimum Metal Thickness
in. mm
Aluminum-coated steel Type T1-40 (Regular, 0.018 0.46
2 2
0.40 oz/ft (0.12 kg/m )
Aluminum alloys 0.016 0.41
Cast iron 0.125 3.17
Galvanized steel G60 coating class 0.018 0.45
Porcelain-enameled steel 0.032 0.81
Stainless steel 0.012 0.30
Steel, uncoated or painted 0.042 1.07
E1509 − 12 (2017)
TABLE 2 Maximum Temperature Increases
Column 1 Column 2
Materials and Components
°C °F °C °F
A,B,C
(A) Motor
A, B, C
(A) Motor
(1) Class A insulation systems on coil windings of alternating-
current motors 7 in. (178 mm) or less in diameter (not includ-
ing universal motors):
(a) In open motors: 75 135 115 207
Thermocouple or resistance method
(b) In totally enclosed motors: 80 144 115 207
Thermocouple or resistance method
(2) Class A insulation systems on coil windings of alternating-
current motors more than 7 in. (178 mm) in diameter and of
direct-current and universal motors:
(a) In open motors: 65 117 115 207
Thermocouple method 75 135 115 207
Resistance method
(b) In totally enclosed motors: 70 126 115 207
Thermocouple method 80 144 115 207
Resistance method
(3) Class B insulation systems on coil windings of alternating-
current motors 7 in. (178 mm) or less in diameter (not includ-
ing universal motors):
(a) In open motors: 95 171 140 252
Thermocouple or resistance method
(b) In totally enclosed motors: 100 180 140 252
Thermocouple or resistance method
(4) Class B insulation systems on coil windings of alternating-
current motors more than 7 in. (178 mm) in diameter and of
direct-current and universal motors:
(a) In open motors: 85 153 140 252
Thermocouple method 95 171 140 252
Resistance method
(b) In totally enclosed motors: 90 162 140 252
Thermocouple method 100 180 140 252
Resistance method
C
(B) Components
(1) Capacitors:
(a) Electrolyte types 40 72 (not specified)
D
(b) Other types 65 117
(2) Relay, solenoid, and other coils with:
(a) ass 105 insulation systems: 65 117 115 207
Thermocouple method 85 153 115 207
Resistance method
(b) Class 130 insulation systems: 85 153 140 252
Thermocouple method 105 189 140 252
Resistance method
B
(3) Transformer enclosure:
(a) Class 2 transformers 60 108 85 153
(b) Power and ignition transformers 65 117 90 162
C,E,F
(C) Insulated Conductors
C, E, F
(C) Insulated Conductors
(1) Appliance wiring material:
75°C rating 50 90 65 117
75 °C rating 50 90 65 117
80°C rating 55 99 70 126
80 °C rating 55 99 70 126
90°C rating 65 117 80 144
90 °C rating 65 117 80 144
105°C rating 80 144 95 171
105 °C rating 80 144 95 171
200°C rating 175 315 200 360
200 °C rating 175 315 200 360
250°C rating 225 405 250 450
250 °C rating 225 405 250 450
(2) Flexi
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