TITLE VII.

HEATING, AIR-CONDITIONING AND COMBUSTION UNITS

CHAPTERS:

7-01. General Provisions.7-02. Heating and Air-Conditioning Plants.7-03. Combustion Units.7-04. Chimneys and Flues.7-05. Gasoline Stoves.7-06. Penalty.

CHAPTER 7-01

GENERAL PROVISIONS

SECTIONS:

7-0101. Definitions.7-0102. Scope of Title.7-0103. Minimum Requirements.7-0104. Emergency Repairs.7-0105. Certificate of Authority Required.7-0106. Standards Adopted.7-0107. Modifications of International Mechanical Code.

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7-0101. DEFINITIONS. The following words, terms and phrases,when used in this title, shall have the meanings ascribed to themin this section except where the context clearly indicates adifferent meaning:

1. "Person" includes any individual, firm, partnership,joint adventure, association, corporation, estate,receiver, or any other group or combination acting as aunit, and the plural as well as the singular number;their agents, employees and representatives.

2. "Building Inspector" means the Building Inspector of theCity of Argusville and his authorized assistants.

3. "Heating and Air-Conditioning Plant" includes any heatingor air-conditioning plant or system and the componentparts thereof (except combustion units as defined inParagraph 4 of this section) including but not limited tosteam boilers, hot water boilers and warm air furnaces.

4. "Combustion Unit" includes any stoker, oil burner, oilburning equipment, gas burner, gas burning equipment,conversion burner, or incinerator and their componentparts.

5. "Cooling System" is all of that equipment intended orinstalled for the purpose of cooling air by mechanicalmeans and discharging such air through ducts into anyroom or space. This definition shall not include anyevaporative cooler.

7-0102. SCOPE OF TITLE. This title shall govern theconstruction, installation, alteration, maintenance and repair ofall heating and air-conditioning plants; chimney flues, combustion

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units, gas burners, gas burner equipment and appliances; andgasoline stoves installed in or for all buildings within the Cityof Argusville, North Dakota, as well as for any area within theextraterritorial zoning jurisdiction of the City, except that theowner-occupant of any single family dwelling may, with theassistance of members of his family and household, personallyperform any work governed by this title, but before doing the sameshall obtain a permit therefor from the Building Inspector and passinspection as hereinafter provided.

7-0103. MINIMUM REQUIREMENTS. The provisions of this titleshall be held to be minimum requirements adopted for the protectionof the health, welfare and safety of the community.

7-0104. EMERGENCY REPAIRS. In case of emergency, repair workmay be proceeded without first obtaining the permit hereinafterrequired. Application for such permit shall be made within24 hours after repairs are commenced, Sundays and holidaysexcepted. This Section shall not be construed to limit the rightof Otter Tail Power Company and its authorized employees to rendernecessary services.

7-0105. CERTIFICATE OF AUTHORITY REQUIRED. Except as isotherwise provided in Section 7-0102 and Section 7-0104 of thistitle, no person shall engage in or carry on the construction,installation, alteration, maintenance and repair of heating andair-conditioning plants and combustion units and gas burners, gasburner equipment and appliances within the City of Argusville, oradvertise, hold-out or otherwise represent himself as beingqualified to perform such work without first securing andcontinuing in force a "Certificate of Authority" as hereinafterprescribed in this title.

7-0106. STANDARDS ADOPTED. The following standards arehereby adopted for all heating, air conditioning and other gas,oil, or coal consuming appliances within the City limits ofArgusville, as well as for any area within the extraterritorialzoning jurisdiction of the City.

1. All heating, air conditioning, or other gas, oil, or coalconsuming appliances for either domestic or commercialuse installed in the City of Argusville shall bear a sealof approval from the American Gas Association, AmericanStandards Association, Underwriters Laboratories, orother nationally recognized testing laboratory.

2. The provisions of the International Mechanical Code,sponsored by the International Conference of BuildingOfficials, 2003 edition, as the same are now established

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in said code, is hereby adopted as the Mechanical Code. Any amendments to the 2003 edition of the InternationalMechanical Code may be adopted by the City by resolution.

3. The following standards of the National Fire PreventionAssociation are hereby adopted as part of this Code:

A. NFPA No. 31, 2003 edition, for the installation ofoil burning equipment; and

B. The provisions of the rules and regulations of the2003 edition adopted in subsection A are those thatare now established in said code. Any amendment tothat code may be adopted by resolution by the CityCouncil.

7-0107. MODIFICATIONS OF INTERNATIONAL MECHANICAL CODE. TheInternational Mechanical Code as adopted in Section 7-0106(2) ishereby changed and amended to read as follows:

1. Chapter 1 - Administration, Part III-Permits andInspections. Sections 115.2, 115.3 and 115.3.2 arehereby changed and amended to read as follows:

SECTION 115 - FEES 115.1 General. Fees shallbe assessed in accordance with the provisions ofthis section or shall be as set forth in the feeschedule adopted by this jurisdiction.

115.2 Permit Fees. The fee for each permitshall be as set forth by resolution of theArgusville City Council.

115.3 Plan Review Fees. When a plan or otherdata are required to be submitted by Section 113.2,a plan review fee shall be paid at the time ofsubmitting plans and specifications for review. The plan review fees for mechanical work shall beequal to 25 percent of the total permit fee as setforth in Section 115.2.

115.3.2 Incomplete or changed plans. Whenplans are incomplete or changed so as to requireadditional plan review, an additional plan reviewfee shall be charged at the rate shown inSection 115.2.

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CHAPTER 7-02

HEATING AND AIR-CONDITIONING PLANTS

SECTIONS:

7-0201. Definitions.7-0202. Permit and Approval of Plans Required: When.7-0203. Duties and Powers of the Building Inspector.7-0204. Appeals.7-0205. Duties of Owner and Contractor.7-0206. Replacements, Alterations, Additions and Repairs to

Existing Heating and Air-Conditioning Plants.7-0207. Clearances.7-0208. Consent Required: Soliciting Prohibited. 7-0209. Modifications.

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7-0201. DEFINITIONS. The following words, terms and phrases,when used in this title, shall have the meanings ascribed to themin this section except where the context clearly indicates adifferent meaning:

1. The term "Gravity Warm Air Heating System" means any andall warm air furnaces enclosed within a casing of anytype and any and all appurtenances thereto or connectionstherewith, intended to heat any building or enclosure bygravity air circulation only, wherein no mechanicalforces or equipment is applied.

2. The term "Forced Air Conditioning" means one or more airheating units within individual housings or within onecommon housing, one or more motor driven blowers, orfans, smoke or vent pipes, individual leader pipes ortrunkline systems, or both, with necessary controldampers for supply and return air, automatic controls,registers, faces and grills; and with provisions forother appurtenances such as filters, air washers,ozonators, humidifiers, etc., as may be desired.

3. The term "Floor Furnace" means a self-contained floorfurnace, suspended from the floor of the space beingheated, with means for observing the flame and lightingthe furnace from the space heated.

4. The term "Warm Air Ceiling Panel System" means a systemof heating wherein warm air is circulated through aceiling "panel" to provide heat.

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5. The term "clearance" means the distance prescribedbetween heating equipment and parts thereof and anystructural combustible construction.

7-0202. PERMIT AND APPROVAL OF PLANS REQUIRED: WHEN. Itshall be unlawful for any person to construct or install anyheating or air-conditioning plant in or for any building, or toalter or repair any such existing heating or air-conditioning plantwithout first making written application to and securing a permitfrom the Building Inspector. Such application shall be accompaniedby:

1. A plan or sketch in duplicate for such proposedconstruction, installation, alteration or repair, ifrequired by the Building Inspector.

2. Where a permit is applied for the installation of anysteam or hot water boiler, warm air furnace, or anydevice performing some specific service in connectionwith any heating or air-conditioning plant, the capacityof which device might affect, in whole or in part, theefficiency of the plant, the application shall beaccompanied by test data, measurements, ratings,capacities, or such other information required by theBuilding Inspector from which the ratings or capacitiesof such boilers, furnaces or devices may be determined. The Building Inspector may require that such test data,measurements, ratings, or capacities shall be verified byaffidavit of the manufacturer thereof or the contractormaking such application. Where a rating cannot besecured from the manufacturer there shall be supplied theInput Boiler Rating.

3. The Building Inspector may waive the requirement of apermit where the alterations, or repairs to any existingheating or air-conditioning plant will not exceed $50.00,when such alteration or repair will not exceed the ratedcapacity of such, heating or air-conditioning plant andare not of such a nature as to render an inspection ofthe same desirable or necessary.

7-0203. DUTIES AND POWERS OF THE BUILDING INSPECTOR. Itshall be the duty of the Building Inspector and he shall have thepower:

1. To enforce the provisions of this title relating toheating and air-conditioning plants.

2. To make all necessary inspections of such plants.

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3. To require all necessary tests to be made to determinethe tightness of any steam or hot water installation orany air-conditioning plant, or any portion thereof, orany sheet metal ducts or pipes connected therewith, andto supervise such tests.

4. To require the immediate removal of any material orconstruction which conceals or covers up any newlyinstalled portion of such plant prior to its inspectionand approval by the Building Inspector.

5. To post a "Stop Work" notice on the premises where thework is in progress and to notify anyone concerned ofsuch a notice when the work or project is being performedin violation of this title. After the posting of suchnotice no person shall do any further work on suchproject until the particular defect or violation has beeneliminated to the satisfaction of the Building Inspector,when such notice shall be removed by the BuildingInspector.

7-0204. APPEALS. A person may appeal orders, decisions, ordeterminations made by the building inspector relative to theapplication and interpretation of Title X of the ordinances of theCity of Argusville. This appeal shall be to the City Council ofthe City of Argusville. The appeal must be in writing and filedwith the City Auditor within thirty (30) days of the order,decision or determination made by the building inspector.

7-0205. DUTIES OF OWNER AND CONTRACTOR. It shall be the dutyof the owner of a building or the contractor employed by him:

1. To notify the Building Inspector immediately uponcompletion of those portions of a new building or anyaddition to an older building upon completion of thoseportions of a heating or air-conditioning plant which arethereafter to be concealed or covered up, that said plantis ready for inspection and testing. There shall beposted by the owner or contractor in a conspicuousposition on some portion of the installation a noticesubstantially in the following form:

"WARNING: This installation and piping have not beeninspected and approved by the BuildingInspector and must not be covered up orconcealed until so inspected and approved."

No other person than the Building Inspector shall removesuch notice until the heating or air-conditioning plant

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has been inspected and approved by him. He shall thenattach a certificate of such inspection and approval.

2. To notify the Building Inspector upon the completion ofany installation of a heating or air-conditioning plantthat the work is ready for inspection and tests byregistering the number of the permit and the location ofthe work in an inspection order register book to be keptin the office of the Building Inspector for that purpose. Such tests shall be made by the contractor in thepresence of and under the supervision of the BuildingInspector. If found satisfactory and in compliance withthe provisions of this title, the Building Inspectorshall approve the same. Where approval is refused by theBuilding Inspector for any of the reasons set forth inthis title, correction of such installations shall bemade to meet such objections, and upon notice to theBuilding Inspector as above provided, he shall make are-inspection thereof.

7-0206. REPLACEMENTS, ALTERATIONS, ADDITIONS AND REPAIRS TOEXISTING HEATING AND AIR-CONDITIONING PLANTS. The followingregulations shall apply:

1. To replacements of existing equipment. Such replacementsshall be of such capacity as would be required under thistitle if the same were installed for use in connectionwith a new plant or system, and designed to meet theheating or air-conditioning requirements for saidbuilding. Provided, however, that in a building otherthan a single family dwelling, where in the opinion ofthe Building Inspector, it would be impracticable or workan unnecessary hardship to require complete compliancewith the foregoing requirements, a steam or hot waterboiler, warm air furnace, fan, blower, air-conditioningequipment or appurtenance, based as to capacity on theconnected load, may be installed to replace any existingequipment of like nature.

2. To alterations of existing equipment. Such alterationsshall be made in conformity with the requirements of thistitle insofar as may be practicable in the judgment ofthe Building Inspector without impairing the efficientoperation of the system, as a whole, or any portionthereof.

3. To additions to existing equipment. Wherever the heatingor air-conditioning requirements of any existing buildingare hereafter increased either by the construction of an

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addition thereto or by an increase in the portions of thebuilding to be heated or air-conditioned, or in any othermanner, the capacity of such heating or air-conditioningplant shall be increased to that capacity which would berequired by this title for a new installation, designedto meet equal heating or air-conditioning requirements.

4. To repairs of existing equipment. All such repairs shallbe made in such manner as to restore the equipment asnear as is practicable to its original sound condition. When repaired, such equipment shall be subjected to suchtests as may be required, in the judgment of the BuildingInspector to satisfactorily demonstrate its ability tomeet the service requirements to which it may normally besubjected.

7-0207. CLEARANCES.

1. Installations. Heating equipment and parts thereof shallbe so located that the clear space between any heatedsurface and combustible construction is sufficient toprevent temperatures of more than 160 degrees on suchconstructions. Unless specifically provided otherwise,the clearance generally shall be as shown in Table I,following:

TABLE I - CLEARANCE WITH NO PROTECTION

Heating Unit Above (a) Minimum Clearance in InchesSides and Front Smoke or

and Rear Vent Pipe

Mechanical Warm Air Furnaces(with fan) automaticallyfired, with 250 degree temp.limit control (b)

Burning liquid or solid fuel 6" 6" 48" 18" Burning gas 6" 6" 18" 9" (c)

Gravity Furnaces Burning liquid or solid fuel 18" 18" 48" 18" Burning gas 18" 18" 18" 9" (c)

(a) The clearance above warm air furnaces shall bemeasured from the furnace bonnet or warm air plenumchamber.

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(b) "Mechanical warm air furnaces with 250 degreestemp. limit control" shall be defined asautomatically fired warm air furnaces equipped witha fan to circulate the air and with approvedautomatic temperature limit controls that cannot beset higher than 250 degrees and if coal stoker isfired, equipped also with an automatic overruncontrol to operate the fan when the air reaches atemperature not higher than 250 degrees even thoughthe controlling thermostat is not calling for heat.

(c) These clearances do not apply to approved type Bgas vents (approved vent piping of non-combustible,corrosion-resistant material of adequate strengthand heat insulating value and having bell andspigot or other acceptable joints). Theseclearances may be reduced to 6 inches for approvedgas appliances which produce flue gas temperaturesnot in excess of 350 degrees at the outlet of thedraft hood when burning gas at the manufacturer'sinput rating.

2. Attic furnaces. Attic furnaces or furnaces in atticsshall not be installed unless of a type approved for suchuse with installation in accordance with the mounting andclearance provisions of this section.

3. Clearances required with protection. Heating furnacesmay be installed with clearance to woodwork or othercombustible material, as provided in the NationalBuilding Code and adopted by the City of Argusville.

7-0208. CONSENT REQUIRED: SOLICITING PROHIBITED. Allinstallations, alterations, repairs or inspections of heating andair-conditioning plants shall be made only by order orauthorization of the owner or manager of any building. No personshall engage in house to house canvassing or soliciting for thesale or supplying of such services.

7-0209. MODIFICATIONS. Where circumstances or conditions ofany particular installation are unusual and such as to render thestrict application of this title impracticable, the BuildingInspector may, if he deems it safe, permit such modification aswill provide a substantially equivalent degree of safety.

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CHAPTER 7-03

COMBUSTION UNITS

SECTIONS:

7-0301. Definitions.7-0302. Duties and Powers of Building Inspector. 7-0303. Stoker Installation.7-0304. Oil Burner Installation.7-0305. Gas Burner Installation.

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7-0301. DEFINITIONS. The following words, terms and phrases,when used in this title, shall have the meanings ascribed to themin this section, except where the context clearly indicates adifferent meaning:

1. The term "Stoker" means a mechanical device for feedingsolid fuel into the combustion chamber of a boiler orfurnace used in connection with a heating plant whetherautomatically or manually controlled.

2. "Oil Burner" shall mean any device designed to burn fueloil having a flash point of 100 degrees Fahrenheit orhigher, as determined by the Tag Closed Test inaccordance with the method of test adopted by theAmerican Society for Testing Materials (ASTM DesignationD56-36), and having a fuel tank or container with acapacity of more than ten gallons connected thereto.

3. "Oil Burning Equipment" shall include oil burners and alltanks, piping, pumps, control devices and accessories,including blowers for the distribution of warmed airconnected to the burners.

4. The term "Gas Burner" means a device for the finalconveyance of the gas or a mixture of gas and air, to thecombustion zone of a boiler, furnace, device or applianceused in connection with a heating system and shallinclude conversion burners and gas designed appliances ashereinafter defined.

5. The term "Gas Burner Equipment" shall include gasburners, as above defined, and all piping, shut-offvalves, fans, blowers, control devices and accessoriesconnected to the burners.

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6. The term "Conversion Burner" means a gas burningappliance designed to supply gaseous fuel to and properlyburn the same within the combustion chamber of a boiler,furnace or other device originally designed to burnanother fuel.

7. The term "Gas Designed Appliance" means all gas burningspace heating appliances designed for the exclusive useof gaseous fuels either natural or manufactured.

7-0302. DUTIES AND POWERS OF BUILDING INSPECTOR. It shall bethe duty of the Building Inspector and he shall have the power:

1. To enforce the provisions of this title relating tocombustion units as herein defined.

2. To make all necessary inspections of such units.

3. To require all necessary tests to be made to determinethe safety, adequacy and efficiency of such units.

7-0303. STOKER INSTALLATION. The construction, arrangement,equipment and manner of installation of all stokers, hereafterinstalled for use in connection with heating plants in or forbuildings in the City of Argusville and the alteration hereafter ofall such stoker installations shall conform to the followingprovisions:

1. Non-automatic Stokers Not Allowed: Exceptions: When.Stokers which are not equipped with automatic means ofpreventing excessive pressure or temperatures of theheating medium shall not be installed or operated in anylocation where a competent attendant will not beconstantly on duty on the premises while the stoker is inoperation.

2. Automatic Controls. Each mechanical stoker shall beequipped with at least one (1) high limit control soconnected as to shut off power from stoker drive in theevent of excessive pressure in a steam boiler orexcessive temperature in a hot water boiler or warm airfurnace casing. Each steam boiler or hot water boilershall be equipped with a low water cut-off.

Where there may be an over-run of heat due to sustainedperiod of operation for the stoker, a reverse actioncontrol or equivalent control shall be installed in hotwater or steam systems so as to relieve this condition.

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On all installations where operation of stokers iscontrolled by an aquastat, pressurestat or furnacestat,a second control, either aquastat, pressurestat orfurnacestat shall be installed in the 110 volt line aheadof all controls as a high limit or safety control.

3. Stoker Capacity, Setting Heights and Combustion Space. The capacity of a stoker for any given installation shallbe in accordance with load carrying capacity set forth bythe Stokers Manufacturing Association. In any event, thestoker installed shall have a capacity or feed rate notto exceed 50% greater than that required in said table ofStoker Manufacturers' Association.

The distance from retort to crown sheet and the space forcombustion, within any boiler or furnace, shall be suchas to secure efficient smokeless combustion and shall bein accordance with the Table set forth by the StokersManufacturers' Association. Where stokers are installedin old boilers and strict compliance with the foregoingrequirements cannot be met, minor modifications may bemade subject to the approval of the Building Inspector.

4. Alterations to Combustion Chambers. Where stokers areinstalled in downdraft boilers, the upper grates shall beremoved and baffling changed where necessary to secure anunrestricted combustion space.

5. Used Stokers: Reconditioned. It shall be hereafterunlawful for any person to install any used stoker, orfor the Building Inspector to issue any permitauthorizing such installation until such person shallhave first submitted, with his application for suchpermit to install, a copy of the purchase order statingthat a used, repaired or reconditioned stoker is to beinstalled and bearing a statement by the installer thatsaid stoker has been properly reconditioned and willcomply in every way with the requirements of this titlefor new equipment as to operation and adjustment.

6. Approval Required: It shall be unlawful for any personto install within the City of Argusville any stoker notapproved by the Stoker Manufacturers' Association.

7. Stoker Equipment Installation Permit Required. Anyperson may install an approved stoker and its associatedequipment in accordance with the provisions of thistitle, but no stoker equipment shall be installed in theCity of Argusville unless and until the Building

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Inspector shall have issued a permit for the specificinstallation.

8. Application. Application for the installation permitherein required shall be made in writing signed by thedealer or installer, stating the location of the propertyor building in which the installation is intended, thename, type and model of the stoker, type and model ofcontrols, stoker capacity, setting heights and combustionspace, accompanied by a sketch, if deemed necessary bythe Building Inspector, showing the layout of controlsfor the purpose of installation.

9. Granting Permits. Within forty-eight (48) hours afterfiling of the application and sketch, the BuildingInspector shall issue such a permit or in writing notifythe applicant of changes required before a permit will beissued or the reason why the application is denied. Uponthe required changes being made in the application orsketch, a permit shall be issued. No stoker equipment ofa different kind than that specified in the applicationand no other changes shall be made, nor shall theinstallation be made in any other manner than asdescribed in such application or shown in the sketchsubmitted therewith.

10. Inspection of Installations. All installations ofstokers installed within the City of Argusville shall beinspected by the Building Inspector. An approval ofinstallation shall be given the installer before anystoker is turned on for use. Installers of stokers shallgive at least twenty-four (24) hours notice that a stokerinstallation is ready for inspection.

7-0304. OIL BURNER INSTALLATION. The construction,arrangement and manner of installation of all oil burners and oilburning equipment hereafter installed for use in connection withheating plants in or for buildings in the City of Argusville andthe alteration or repair hereafter of such, installations shallconform to the following provisions:

1. Exception. This title does not apply to oil heaters andoil lamps equipped with a wick or a mechanical device,the movement of which is essential to flame adjustment.or to such portable apparatus as blow torches, solderingpots, etc., but does include all types, classes and sizesof oil burning water heaters and space heaters,regardless of their oil container or tank capacity.

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2. Approval Required. It shall be unlawful for any personto install within the City of Argusville any oil burnernot approved by the Underwriters Laboratories or othernationally recognized testing laboratory.

3. Inspection. The Building Inspector shall automaticallyapprove any oil burners listed by the UnderwritersLaboratory or any other nationally recognized inspectionboard or laboratory. Oil burners not listed by theUnderwriters Laboratory or any other nationallyrecognized board or laboratory shall not be approved.

4. Oil Heating Equipment: Installation Permit. Anyqualified person may install approved oil burningequipment in connection with an approved oil burner inaccordance with the provisions of this title, but no oilburning equipment shall be installed in the City ofArgusville, unless and until the Building Inspector shallhave issued a permit for the specific installation.

5. Definition of Permit. A permit is the written authorityof the Building Inspector issued pursuant to this titlefor the installation of an oil burner and its associatedequipment covered by this title or any material enteringinto the composition thereof.

6. Application for Installation Permit. Application for aninstallation permit shall be made in writing signed bythe dealer or installer stating the location of theproperty in which the installation is intended, the name,type, and model of the burner, type and model ofcontrols, the number and capacity of tanks for storage offuel, accompanied by a sketch, if deemed necessary by theBuilding Inspector, showing the layout of the proposedinstallation.

7. Granting Permits. Within forty-eight (48) hours afterfiling of an application and sketch in accordance withthis title, the Building Inspector shall issue suchpermit or in writing notify the applicant of changesrequired before a permit will be issued or the reasonswhy the application is denied. Upon the required changesbeing made in the application or sketch a permit shall beissued. No oil burner or equipment of a different kindthan that specified in the application and no tanks ofdifferent sizes, kind or quality shall be installed norshall the installation be made in any manner other thanas described in such application or shown in the sketchsubmitted therewith.

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8. Inspection of Installation. All installations of oilburners or equipment within the City of Argusville shallbe inspected by the Building Inspector. An approval ofinstallation shall be given the installer before any oilburner is turned on for use. The installer shall give atleast eight (8) hours notice that the installation isready for inspection.

9. Installation of Used Oil Burners: Procedure to beRequired. No person shall install a used oil burner foruse in connection with a heating plant until he shallhave furnished the Building Inspector with a statementthat said oil burner has been put in first classoperating condition and a letter from the purchaseracknowledging that said purchaser is buying a used oilburner.

10. Fuel Oil. The grade of fuel oil used with any oil burnershall be one which tests and experience have shown to besuitable for use with that burner. The oil shall have aflash point not less than 100 degrees Fahrenheit,determined as specified in paragraph 2 of Section 7-0701of this chapter and shall be free from acid, grit andfibrous or other foreign matter likely to clog or inurethe burner or valves.

11. Commercial Standard. The commercial standards (Grades 1,2, 3, 5, and 6) for domestic and industrial fuel oil, setup by the U.S. Department of Commerce, Bureau ofStandards Bulletin CS 12-4U (effective June 5, 1940)shall constitute standard grades for fuel oil sold ordelivered to oil burners within the City of Argusvilleand it is hereby declared a violation of this title forany person to deliver for use as fuel in an oil burner orburners, or put into the storage tank of any oil burneror burners a grade of oil heavier than that which hasbeen approved by the Building Inspector for use in suchburner or burners.

12. Secondary Controls: Thermostats. All domestic types ofoil burner installations in the City of Argusville shallbe equipped with a modern type of thermostat for thesecondary control of the oil burner.

13. Electrical Installations. Electrical installations usedin connection with oil burning equipment shall beinstalled in accordance with the Electrical Code of theCity of Argusville.

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14. Combustion Chamber Dimensions. It shall be unlawful forany person to install any oil burner into a combustionchamber of a design, size or type other than that whichhas been specified by the manufacturer as being thecorrect design, size or type for the size of nozzle andangle of atomization, with which the oil burner beinginstalled is so equipped.

15. Flue Gas Analysis Tests. Before any final approval shallbe given by the Building Inspector on any installation ofany type of oil burner covered by the provisions of thistitle, the person installing the same shall make a testor tests commonly known as a flue gas analysis in thepresence of the inspecting officer if deemed necessary bythe Building Inspector. The findings of such analysisshall be recorded upon the inspection approval form.

7-0305. GAS BURNER INSTALLATION.

1. Approval of Gas Burner.

a. Permit Required. No apparatus or equipment to beused with gas supply from the general gasdistribution system of the Northern States PowerCompany within the City of Argusville shall beinstalled or connected for use without a permithaving been secured therefore from the BuildingInspector.

b. Certificate Required. No permits shall be issuedby the Building Inspector for the installation orconnection for use of any gas-fired apparatus orequipment (except domestic ranges, refrigerators,water heaters, or any gas equipment other thanspace heating equipment, having an input rating ofless than 50,000 BTU per hour) supplied from thegeneral gas distribution system of the NorthernStates Power Company located within the City ofArgusville unless the application for said permitfor such installation or connection is accompaniedby a certificate from said company operating suchsystem stating that it has the facilities andcapacity to serve the equipment or apparatus at thelocation designed.

c. Refusal of Gas Service - When. The Northern StatesPower Company shall refuse gas service to thepremises wherein any gas-fired installation orconnection is made contrary to the terms of this

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title, upon discovery of same, until the same hasbeen remedied or disconnected and removed.

d. Standards. All installations of mains, regulatorstations, services and meter installations shallconform to the Gas Construction Standards on filein the office of the City Engineer of the City ofArgusville. Such standards shall not be effectiveuntil approved by the City Council and any changesin such standards shall not be effective unlessapproved by the Building Inspector of the City ofArgusville. However, regardless of such standardsevery high or medium pressure service shall have anoutside shutoff valve and all low pressure servicesinstalled after January 1, 1962, shall have outsideshutoff valves.

2. Appliances with Input of 400,000 BTU or Less.

a. Scope. The construction arrangement, manner ofinstallation, alteration and repair of all gasburners, gas burner equipment and appliances asherein defined having an input capacity of 400,000BTU per hour or less shall conform to provisions ofthis title.

b. Definitions. For the purpose of this Section thefollowing definitions shall apply:

(1) Gas Burners and Gas Burner Equipment. Theterm "gas burner" shall mean a device for thefinal conveyance of gas or a mixture of gasand air to the combustion zone of a steam orhot water boiler, furnace, or to any device orappliance used in connection with a spaceheating system and shall include conversionburners, gas designed heating appliances,power gas burners and atmospheric gas burners. The term "gas burner equipment" shall includegas burners as above defined, together withall fans, blowers, control devices,accessories connected to the burners andpiping involved in supplying the burner.

(2) Conversion Burner. The term "ConversionBurner" shall mean a gas burning devicedesigned to supply gaseous fuel to andproperly burn this fuel in the combustion

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space of equipment, originally designed toburn another fuel.

(3) Gas Designed Heating Appliance. The term "gasdesigned heating appliance" shall mean anyspace heating appliance designed for theexclusive use of gaseous fuel, excepting suchauxiliary heaters ss gas logs, radiantheaters, etc.

(4) Power Gas Burner. A "power gas burner" is onewhich either gas or air or both are suppliedat pressures exceeding, for gas, the normalline pressure at the burner and for airatmospheric pressure, the added pressure beingapplied at the burner.

(5) Atmospheric Burner. An "atmospheric burner"is a device (other than a gas range or a gaswater heater) in which air at atmosphericpressure is injected into the burner by a jetof gas under pressure not more than the houseline pressure and whose input exceeds 50,000BTU per hour.

c. Approval of Gas Burners. It shall be unlawful forany person, firm, corporation, or agent to installany gas burner, as defined within this title untilsuch gas burner has been approved by the BuildingInspector of the City of Argusville. The BuildingInspector may approve all gas burners meeting theminimum requirements for approval or listing by theAmerican Standards Association, sponsored by theAmerican Gas Association and in compliance withrequirements of this Code.

d. Installation of Used Gas Burners. It shall beunlawful to install any used gas burner and nopermit shall be issued authorizing suchinstallation until the licensed installer shallhave first submitted with this application forpermit a copy of the purchase order stating that aused burner is to be installed and bearing anacknowledgment by the purchaser that such is thecase together with a statement by the licensedinstaller that said burner has been reconditionedand will comply in every way with ordinancerequirements for new equipment as to operation,safety standards and adjustments. No used gas

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burner shall be installed unless it is of a type,make and model currently approved for installationin the City of Argusville.

e. Type of Gas. The requirements of this title shallapply to gas burners supplied with natural gas fromthe general distribution system within the City ofArgusville. Burners and their installation wheresupplied with other types of gas, such as bottledor liquified petroleum gas, shall conform to therequirements of this title where applicabletogether with the requirements of the American GasAssociation and the National Board of FireUnderwriters pertaining to the type of gas to beused.

f. Ventilation. Gas burners and gas burningappliances as hereinbefore defined shall not beinstalled for operation in a room where the normalfacilities for ventilation do not permit propercombustion of the gas, unless special provision ismade for supplying sufficient air for completecombustion.

Gas burners, gas burner appliances and spaceheaters will not be permitted in bedrooms, roomsused for sleeping purposes, bathrooms or anyconfined space or area unless proper provisions aremade for the supply of primary and secondary airfor combustion from outside of the building. Provisions shall also be made for proper venting tothe outside.

Method of securing air for combustion and theproper venting of the appliances shall be securedfrom the Building Inspector before work is startedon any specific installation.

g. General. The installation of conversion burnersshall be made in conformance with the AmericanStandards Association requirements as sponsored bythe American Gas Association and with requirementsherein set forth.

h. Preparation of Boilers and Furnaces. Before a gasburner is installed in any existing boiler orfurnace, all flues, fire pots, combustion chambersand connecting joints through which flue gases areconducted shall be thoroughly cleaned, examined for

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leaks and draft conditions and made gas tight asshown by a smoke bomb test or its equivalent.

i. Flues and Flue Pipes. The chimney flue and fluepipe shall be examined and reconditioned ifnecessary so that they will freely conduct the fluegases to the outer air. Where flue pipes arerusted or burned out, they shall be replaced by newpipe.

j. Removal of Oil Burners. Where a gas burner isinstalled and an oil burner removed, it shall bemandatory that the vent and fill pipes to thestorage tank be removed and all openings to thestorage tank plugged.

k. Draft Hoods. Each gas burning appliance shall beequipped with a draft hood or its equivalentdesigned to:

(1) Insure the ready escape of the products ofcombustion in the event of no draft, backdraft, or stoppage beyond the appliance.

(2) Prevent a back draft from entering theappliance.

(3) Neutralize the effect of stack action of theflue upon the operation of the appliance.

The draft hood shall be placed in and made a partof the flue pipe from the appliance or shall be inthe appliance itself. Such device shall have afree area equal to or greater than thecross-sectional area of the flue pipe connectedthereto subject to the approval of the BuildingInspector.

The draft hood shall be located at a point notlower than the top of the highest flue passage inthe appliance.

Appliances of the revertible flue type shall havethe draft hood located at least one foot higherthan the top of the highest flue passage. Properprovision shall be made, subject to the approval ofthe Building Inspector, to prevent the accumulationof gas in any part thereof. Revertible flue typefurnaces shall have as a minimum a two (2) inch

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bleeder cut through if trapped more than twelve(12) inches.

l. Flue Pipes. The internal cross-sectional area ofthe flue pipe between the appliance and the chimneyliner shall be such as to provide not less than onesquare inch of flue area per 7,500 hourly BTUinput. In no case shall this flue pipe be lessthan five (5) inches in diameter for centralheating gas appliances nor less than four (4)inches in diameter for space heating appliances andit shall not be larger than the next integral inchdiameter above the sizes given in the followingtable:

Minimum Permissible Flue Sizes For Gas Burner Installations

Input Rating Area of DiameterBTU per hour Flue Outlet Sq. inch Flue Pipe Inches

95,500 12.6 4 147,000 19.6 5 212,250 28.3 6 288,750 38.5 7 377,250 50.3 8 477,000 63.6 9

Based on 1 sq. in. flue area per 7,500 BTU per hourinput.

NOTE: If flue pipe exceeds 10 feet in length orcontains more than two elbows, use next size largerpipe and draft hood.

In cases where the outlet from the appliance islarger than the above indicated size, an orificeplate may be inserted, or a section of the fluepipe restricted to the size indicated between theappliance outlet and the draft diverter. Inspecial cases with high chimneys or flues, theabove schedule of areas may be modified subject tospecific approval of the Building Inspector.

The draft hood should ordinarily be locatedadjacent to the appliance. In cases where itappears desirable to place the draft hood at adistance from the appliance, the size of the

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restricted section may be modified according to thelength and rise of the flue pipe.

The proportioned section at the flue outlet of theappliance eliminates the necessity of using anadjustable damper in the flue pipe and such damperwill not be permitted.

Where dampers are an integral part of the boiler orfurnace, they shall be removed or permanentlysecured in the wide open position, except suchdampers the function of which is to alter thepassage of the flue gases through the appliance,which shall be locked in such a position as not tointerfere with the normal operation of the burners.

m. Construction of Flue Pipes. Material used for fluepipe shall be such as to resist the corrosiveaction of flue gases.

Flue pipe of existing systems shall be relocatedwhere necessary and new flue pipe installationsshall be so made as to avoid sharp turns or otherconstructional features which could createexcessive resistance to the flow of flue gases. Flue pipe shall slope upward to chimney.

Flue pipe shall be tightly connected to the chimneyliner, so as to prevent infiltration of cold air.

No baffles shall be applied which will interferewith the proper combustion of gas.

Flue pipe shall be well supported to preventsagging and shall not be installed closer than six(6) inches to any combustible building materialsunless flue pipe is covered with incombustibleinsulation such that the surface temperature of theexterior surface thereof attain a temperature ofnot higher than one hundred twenty-five (125)degrees Fahrenheit when the appliance is undercontinuous operation.

All space heating equipment shall be of the ventedtype and properly vented to an effective flue. Heaters of a sealed unit type vented through a wallto the atmosphere will be accepted if approved bythe American Gas Association.

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n. Radiant Heaters. Radiant Heaters or other unventedheaters of less than 25,000 BTU input may beinstalled in fireplaces providing the chimney has apositive draft with the damper closed.

o. Gas Burners. Gas burners of all types shallconsist of assembled and tested units and shall beaccompanied by complete and comprehensiveinstallation and operation instructions. Theburner or burners shall be located according to themanufacturers' instruction and shall be so securedthat they will not twist, slide or drop out ofposition.

p. Installation of Gas Burners. The burners shall beso installed as to be readily accessible forcleaning and inspection. The burner or burnersshall be so installed that no part of the flamesimpinge on the heating surface so as to causeincomplete combustion.

Air shutters shall be adjusted to produce a properflame at the prevailing gas pressure.

On all installations where the combustion airpressure can exceed the house line pressure, anapproved check valve or other approved device shallbe installed in the gas supply line to prevent airfrom backing into the gas line.

q. Air Intake. Where secondary air is necessary,secondary air opening or openings shall be providedof sufficient area to supply an adequate amount ofair for complete combustion under the specifieddraft conditions and at the maximum rate of firing.

Where an automatic secondary air control isprovided, the construction shall be such that incase the control fails in any way, either the gaswill be shut off or the secondary air door willremain open.

The air intake of power burners shall be so locatedas to prevent the possibility of accidentalclosure. The gas and air supply shall be equippedwith controls coordinated to prevent opening of thegas supply until the air supply is adequate forproper combustion and to shut off the gas supply inthe event of failure of the air supply.

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r. Pilots. Each gas burner shall be equipped with asafety device arranged to prevent the flow of gasthrough the main burner unless the pilot flame isburning, to consist of a thermostatic pilot orother approved type of safety device. Theoperation of this device shall not depend upon theclosing of an electric circuit to shut off the maingas supply. Gas burners installed under Section 2nare exempt from this provision.

Pilot burners shall be rigidly supported in such amanner that their position relative to the mainburner or burners will be fixed.

Pilot burner or burners shall be so placed thatthey can be safely lighted and they shall bereadily accessible or removable for cleaning.

The gas supply line to the pilot or pilots shall beconnected to vertical main gas supply lines or tothe side or top of horizontal lines ahead of themain burner governor and appliance shut-off valveand shall be provided with a separate cock. Provided, however, that where complete shut-offtype automatic pilot is provided with approved flowinterrupter, the pilot line shall be connected tothis control and such control shall be locatedahead of the main burner governor and after theappliance shut-off valve.

Room heaters, floor furnaces and recessed wallheaters shall be equipped with complete shut-offtype of automatic pilot.

Thermostatic safety pilots shall be so adjustedthat main gas supply will be shut off within threeminutes after pilot flame has been extinguishedunder continuous operating conditions.

Copper or iron tubing shall not be used for supplypiping within the burner heat zone to pilotburners.

s. Main Shut-off Valve or Cock. A manually operatedapproved shut-off valve or cock shall be installedat each appliance to shut off the entire gas supplyto appliance.

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Such valve or cock shall be so located that it isreadily accessible at about five (5) feet above thefloor and shall clearly indicate the "on" and "off"positions, or direction of rotation to open orclose. Where a cock is provided, the openinghandle shall be securely attached to the plug insuch manner that it may not be readily removed.

t. Automatic Control. Electric control valves shallbe installed according to the instructionsfurnished by the manufacturer. All heatingequipment shall be automatically controlled bythermostat except heaters installed in fireplacesas provided in Paragraph 2n.

u. Electric Wiring. All electrical connections shallbe made in accordance with the provisions of allBuilding and Electrical Codes relating to theinstallation of electric wiring in 2v.

v. Gas Pressure Regulators. An approved gas pressureregulator shall be installed on the downstream sideof the pilot supply on all gas burners and apressure regulator and pilot filter shall beinstalled in all pilot lines, downstream from thepilot shut-off cock, on all burners. Pressureregulators and pilot filters shall be of a typelisted for approval by the American Gas Associationand shall be approved by the Building Inspector.

w. Limiting Devices. The boiler or furnace shall beequipped with safety devices arranged to limit highsteam pressures or water temperatures, as well ashigh air temperature in warm air furnaces and allsuch devices shall be subject to the approval ofthe Building Inspector.

Each gas fired steam boiler shall be equipped witha low-water cut-off approved by the BuildingInspector.

Safety devices operated electrically shall notdepend upon the closing of a circuit to shut offthe main gas supply. This requirement shall not beconstrued as prohibiting the use of electricalregulating devices, providing the required safetydevices are also installed. Controls shall be soconnected that maximum inherent safety provided bysuch controls will be attained.

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Safety shut off valves, if used, shall be tested toassure gas tightness of the seal when in the closedposition; the valve assembly shall be gas tight inall positions. Packing glands shall be designed sothat the valve will not be made inoperative byexcessive tightening of the packing nut.

Either the valve shall incorporate means forrequiring a manual operation for reopening of thevalve after it has closed or the electrical circuitshall be so arranged as to require a manualoperation to reopen the valve after it has beenclosed. In no case shall valves be able to beopened manually until safety pilots are lighted andcircuit completed or low-water cut-off circuit hasbeen completed.

x. Piping. Gas piping installed for servingconversion burners or gas designed heaterappliances shall be sized for a total pressure dropnot exceeding 0.3 inches water gauge from the meterto the burner for the total connected load. Aseparate pipe from the meter is to be preferred andin no case shall the service pipe be smaller thanthe size of equipment connection. All gas pipingshall be installed in conformance with theprovisions of this title and in conformance withAmerican Standard Association's requirements.

y. Chimney Liners. Except as exempted in this sectionand except on approved incinerators as designatedin this title, masonry chimneys serving gas firedboilers, furnaces or heating devices, whether ofthe gas designed type or fired by gas conversionburners, shall be lined continuously from thethimble to the top with an approved incombustible,acid and corrosion resisting liner of the sameequivalent internal cross-sectional area as theflue pipe or pipes extending from the appliance orother appliances to the chimney liner. Acondensation pocket shall be provided at the baseof said liner with provisions for a drip, soarranged that excessive condensation of flueproducts may be disposed of without damage tochimney, foundation, floor or footings. Suchliners shall be constructed of material having athickness before coating of not less than No. 22U.S. Standard Gauge. Where such liners areconstructed of uncoated materials and inherent

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characteristics of which show a high degree ofresistance to acids and corrosion, a lighter gaugemay be used, subject to the approval of theBuilding Inspector. If the masonry chimney is ofType A Underwriter's construction and is providedwith a glazed tile flue liner or a vitrified belltype flue liner installed with bells upward, set inacid and moisture resistant mortar, of ample sizefor the load but not less than 8" equivalentdiameter, the above flue liner may be omitted. Inthe event the chimney flue serving the conversionfired or gas designed appliance also serves oneor more appliances other than gas fired, theabove provided liner may be omitted. On largerinstallations where burners are in more or lesscontinuous operation and stack temperatures aresufficiently high to minimize the possibility ofcondensation within the chimney, the chimney linermay be omitted, subject to the approval of theBuilding Inspector.

z. Adequacy of Draft. In the event conditions at thetime of installation are such that the chimney orvertical flue has insufficient natural draft toproperly carry away the products of combustion oris subject to down drafts, provision shall be madeby the installer to rectify existing conditions, orprovide mechanical means of maintaining constantupdraft during appliance operation.

aa. Adjustment of Burners. After the piping has beenthoroughly purged, the pilot burner shall belighted and adjusted and the burners put intooperation in accordance with the manufacturer'sinstructions.

ab. Pilot Operation. Pilot flames shall effectivelyignite the gas at the main burner or burners andshall be adequately protected from drafts. Adevice which under normal chimney draft conditionsis at least equal in performance to the draft hoodhereinbefore provided for, shall be interpreted asfulfilling the second part of this requirement asfar as chimney drafts are concerned.

Pilot flames shall not become extinguished when themain burner or burners are turned on or off in anormal manner, either manually or by automaticcontrols.

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Luminous flame pilots shall not show carbondeposits when adjusted according to themanufacturer's instructions.

Where escapement pilots are used, their flamesshall be freely ignited by the constant burningpilot.

ac. Burner Operation. The flames from each burnershall freely ignite the gas from adjacent burnerswhen operating at the normal gas pressure or whenthe main control valve is regulated to deliverabout one-third (1/3) the full gas rate, exceptwhere additional pilots are provided. If theadditional pilot is a runner type pilot, this pilotmust be proven by a safety mechanism before themain burner valve can open.

Burner flames shall not flash back upon immediateignition, nor upon turning the gas cock until thegas rate to the burner is about one-third (1/3) thefull supply.

Burner flames shall not flash back when the gas isturned on or off by any automatic controlmechanism.

Main burner flames shall ignite freely from eachconstant burning pilot when the main control valveis regulated to deliver about one-third (1/3) thefull gas rate and when pilot flame is reduced tominimum point at which it will actuate the safetythermostatic device. The holding port of multipleport pilots must satisfactorily ignite the mainburner if the ignition port, or ports, are stopped.

Burners shall be of such design that ignition frompilot or pilots shall carry to all ports or burnerheads protected by the pilot at inputs fromone-third (1/3) to maximum rating.

When ignition is made in a normal manner, theflames shall not flash outside appliance. Burnersshall not expel gas through air openings in mixerfaces when operating at the normal burner pressure.

Note: In making the test under Part ac., careshall be exercised to prevent theaccumulation of unburned gas in the

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appliance or flues which might result inexplosion or fire.

ad. Appliance Performances. The flue gas temperatureas taken on the appliance side of the draft hoodshall not exceed 480 degrees Fahrenheit above thatof the air temperature surrounding the appliance. The concentration of CO2 shall not exceed 9%, theconcentration of CO shall not exceed .04%, theconcentration of oxygen shall be not less than 4%nor more than 10%.

Method of Test: Gas Designed Equipment - The rateof flow of the gas shall be adjusted to within plusor minus two (2) percent of the required hourly BTUinput rating at the manifold pressure specified bythe manufacturer. When the prevailing pressure isless than the manifold pressure specified, the gasrate shall be adjusted at the prevailing pressure. The appliance shall be allowed to operate until thestack temperature becomes stabilized, after which asample of the flue products shall be taken at apoint in the flue after the outlet of the appliancebut ahead of the draft hood, and analyzed forcarbon dioxide, carbon monoxide and oxygen.

Method of Test: Conversion Burners - The rate offlow of gas shall be adjusted to within plus 5% orminus 15% of 1.7 times the calculated hourly BTUheat loss of the building in which it is installed. The appliance shall be allowed to operate until thestack temperature becomes stabilized, after which asample of the flue products shall be taken at apoint in the flue after the outlet of the appliancebut ahead of the draft hood, and analyzed forcarbon dioxide, carbon monoxide and oxygen.

The various controls of the appliance shall bechecked by the installer to insure their properoperation.

Upon completion of the test of any newly installedgas burning equipment as hereinafter provided inSection 2-ad and its subsections, the installershall file with the Building Inspector, induplicate, complete records of such test, if deemednecessary by the Building Inspector.

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ae. Instructions to the Owner and/or Occupant. Theowner and/or occupant shall be thoroughlyinstructed by the installer as to the proper andsafe operation of the appliance before it is placedin service, such instructions to include actualdemonstration to the customer or his authorizedagent of the processes of lighting and turning offthe gas burner. A printed set of instructions,enclosed in an envelope labeled "Instructions toCustomer" shall be securely attached to the gasvalve.

A metallic plate, suitably etched or stamped,setting forth detailed instructions for the safelighting and shutting off of the appliance, shallbe permanently attached to the appliance in aprominent position near the lighting apertures. The size of type used shall be not smaller than ten(10) point and the wording contained thereon shallbe subject to the approval of the BuildingInspector. This plate shall also state make andmodel numbers of the burner and show the ratehourly gas BTU input.

3. Technical Regulations for Gas Burner InstallationExceeding 400,000 BTU.

a. Scone. The construction, arrangement, manner ofinstallation, alteration and repair of all gasburners for steam and hot water boilers, furnaces,industrial power and process uses shall conform tothis title. The requirements for installation ofgas burning equipment in power boilers as adoptedby the American Standards Association, sponsored bythe American Gas Association, shall be consideredherein as minimum requirements.

Before approval for installation is granted forinitial installation, after adoption of this title,plans and specifications and/or official literatureand data, including piping arrangements, type andmodel of controls, capacities of equipment, andwiring diagram shall be submitted to the BuildingInspector for preliminary approval. Upon receivingpreliminary approval, the installation shall thenbe made accordingly, and final approval shall notbe granted until the equipment has been tested inthe presence of the Building Inspector. Such testsshall consist of orsat testing, within acceptable

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limits where applicable, pressure regulation, stacktemperature, control operation, pilot turn down,flame lockout and such other tests as may be deemednecessary by the Building Inspector.

b. Definitions. For the purpose of this section, thefollowing definitions shall apply:

(1) Gas Burners and Gas Burning Equipment: theterm "gas burner" shall mean a device for thefinal utilization of gas, or a mixture of gasand air in any steam hot water boiler,furnace, air heater and devices and appliancesfor power industrial, space heating andprocess used in connection with a heatingsystem or commercial and industrialapplications, and shall include conversionburners, gas designed equipment, powerburners, atmospheric burners, dual fuelburners and process and industrial equipmentand shall include all auxiliary and equipmentaccessories including flue pipe controldevices, electric wiring diagrams, pipingdiagrams, gas controls, safety controls, andaccessories in connection with the equipmentand all piping supplying said equipment withgas, air or mixtures thereof.

(2) Conversion Burner: The term "conversion"burner" shall mean a gas burning devicedesigned to supply gaseous fuel to andproperly burn this fuel in the combustionspace of equipment originally designed to burnanother fuel.

(3) Power Gas Burner: A power gas burner is onein which either gas or air or both aresupplied at pressures exceeding, for gas, thenormal line pressure at the burner and forair, atmospheric pressure; the added pressurebeing applied at the burner.

(4) Atmospheric Burner: An atmospheric burner isdefined as a device in which the air atatmospheric pressure is induced into theburner by a jet of gas under pressure not morethan the house line pressure.

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(5) Dual Fuel Burner: A dual fuel burner isdefined as a burner designed to burn eithergas or oil but not both simultaneously.

(6) Gas Designed Equipment: Gas designedequipment is defined as equipment designed asan integral unit for burning gas only as fuel.

(7) Process and Industrial Equipment: Process andindustrial equipment is defined as all gasburning equipment burning gas or a mixture ofgas and air for industrial processapplications.

(8) Gas Pressure: For the purposes of this title,gas supply pressure shall be classified asfollows:

Low Pressure - up to and including 14" W.C. Medium Pressure - from 14" W.C. to & including 25 P.S.I. gaugeHigh Pressure - over 25 P.S.I. gauge

c. General Regulations.

(1) All burners for space heating applicationsshall be accompanied by complete andcomprehensive operating instructions andwiring diagrams.

(2) Where burners are equipped with secondary airshutters or louvres, they must be designed orcounter-balanced so as to drop to a wide openposition in the event of failure or breakageof connecting linkage. They shall also be ofsufficient area to supply adequate air forcomplete combustion under specified draftconditions and at maximum rate of firing.

(3) The burner or burners shall be locatedaccording to the manufacturer's instructionsand shall be so secured that they will notslide, twist or drop out of position.

(4) The burner or burners shall be so installed asto be readily accessible for cleaning andinspection.

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(5) The burner or burners shall be so installedthat no part of flame shall impinge on heatingsurface so as to cause incomplete combustion.

(6) On all installations where the combustion airpressure can exceed the house line pressure,an approved check valve or other approveddevice, shall be installed in the gas supplyline to prevent air from backing into the gasline.

(7) Under no condition shall the equipment befired at a capacity greater or less than thatshown in the official data supplied by themanufacturer, or at greater or less gaspressure than the maximum or minimumpressures, as listed by the manufacturer, oras approved by the Building Inspector.

(8) All equipment is to be installed in the basicmanner in which the original approval wasobtained, and wiring and piping diagrams shallaccompany each permit application when theinput is 1,000,000 BTU per hour or more andwhen different from the original approval orrequested by the Building Inspector.

d. Piping. All gas piping under this section shall bewrought iron or black steel pipe where applicablewith malleable or steel fittings and shall bedesigned so that the pressure drop through thepiping does not exceed that which will supply theproper pressure for the particular application andshall be carefully tested for leaks. Adequatedrips shall be installed at any point at whichliquid condensate could collect, and such dripsshall be readily accessible for cleaning. Gaspiping shall not be supported from other pipes andshall be securely hung so that proper grade will bemaintained.

An approved type of main shut-off cock shall beinstalled in a readily accessible location for theconvenient operation of the burner and ahead of allother gas controls. When this cock is two (2)inches in size or larger, or the gas pressureexceeds fourteen (14") in W.C. pressure, it shallbe of the lubricated plug type and in all cases

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shall have a permanently attached handle, whichshall clearly indicate the "on" and "off" position.

A firing cock of a suitable type may be installeddownstream of all controls that start and stop theflow of gas to the firing equipment if desired.

All pilot lines shall be equipped with an approvedshut-off cock.

e. Combustion Gas Controls. For a burner or acombination of burners not exceeding 500,000 BTUinput per hour, a combustion control of the on andoff type may be used. This control may be ofeither the quick opening or slow opening type.

For a burner or a combination of burners notexceeding 5,000,000 BTU input per hour, approved onand off type of controls may be used, provided aslow opening automatic gas valve is used. Thisvalve shall have a maximum closing time of five (5)seconds. In addition to the slow opening valve, anapproved automatic valve of the positive closingtype shall be installed upstream of the slowopening type of valve.

For burners or a combination of burners with aninput exceeding 5,000,000 BTU per hour, an approvedmodulating, or high-low type of gas control must beused in addition to the slow opening and positivegas valves described in Subsection 3-e, or anapproved combination modulating and slow openingvalve. This modulating or high-low control shallbe of a type that controls the firing rate of theequipment throughout its entire range and soadjusted that the minimum and maximum firing ratestays within the limit as specified for theequipment by the manufacturer and within the limitsof the particular application to which it isapplied.

Modulating controls may use steam, air, hydraulicor electricity as an actuating medium and shall beso arranged that the gas burning equipment startsand stops in the minimum firing position for theparticular application and suitable means shall beprovided to prevent starting of the main flameuntil the controls are in the minimum firing

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position on installation exceeding 5,000,000 BTUper Hr.

Modulating controls that are inter-connected bymechanical linkage to inlet air louvres of naturaldraft burners, shall have this linkage so arrangedthat the louvres will go to the open position inthe event of failure of the linkage, provided suchfailure could change the fuel-air ratio.

On equipment with approved programming controls,the positive closing gas valve may be of either theautomatic or the manual reset type. On equipmentwith constantly proved pilot, and on which thepositive closing valve and flame failure controlrelay does not program with the starting andstopping of the main flame, the valve shall be ofthe approved manual reset type. On equipment withan input of less than 5,000,000 BTU per hour,automatic types of positive closing may be used oneither type of pilot control provided that they donot require the closing of a circuit or relay, andare of the "normally closed" type of valve.

f. Gas Pressure Regulators. Approved types of gasregulators shall be used on all gas burningequipment. These regulators shall maintain astable gas pressure to the equipment, within therange of pressure set up by the manufacturer of thegas burning equipment.

For low pressure, an approved gas pressureregulator shall be installed.

For medium pressure, an approved pressure regulatorshall be installed upstream of all other controlswhen the inlet pressure is not regulated by theutility and this regulator shall be rated at notless than the maximum street pressure.

Where the inlet pressure is regulated by theutility at a pressure not exceeding five (5) psi,an approved regulator shall be installed. Thisregulator shall be rated at not less than five (5)psi and may be either up or down stream of otheroperating controls.

For high pressure, not less than two gas pressureregulators shall be installed downstream of the

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Utility Company meter, one of these to be normallyat the meter location and pressure reduction shallbe accomplished in not less than two stages. Boththe first and second regulators shall be designedfor, and capable of handling the maximum streetpressure available. If a third stage of regulationis desired, this regulator shall be rated for notless than the outlet pressure of the first stageregulator unless installed downstream of theoperating controls.

A limiting device shall be installed on thedownstream side of the final stage of pressureregulation, on medium and high pressure. Thislimiting device shall be so arranged that it willclose the main gas control valves in the event thegas pressure exceeds the proper regulated pressure. This limiting device shall be so arranged that itwill require manual re-cycling or re-setting beforethe equipment can be put back in operation.

g. Operating and Limit Controls. Steam boilers shallbe equipped with not less than one operatingcontrol, and one high limit control, and low watercut-off.

Hot water boilers shall be equipped with not lessthan one operating and one high limit control,activated by boiler water temperature. Operatingcontrols actuated by water temperature shall be ofimmersion type, mounted directly into the boilerwater, the high limit control may be of the surfacetype, mounted on the rise or risers adjacent to theboiler, ahead of all flow and other controls.

Warm air furnaces shall be equipped with not lessthan one operating and one high limit control. These controls shall be so located that failure offans or air circulation through the unit will notappreciably affect their operation, or such fansshall be equipped with air switches to preventoperation of the equipment in the event of fanfailure.

Thermostats, where directly operating the gasburning equipment, may be considered operatingcontrols.

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Where forced or induced draft is used, an approvedair switch shall be installed to prevent operationof the equipment at any time such draft is notdefinitely established and maintained atpredetermined adequate setting.

Electrically operated safety device shall not relyon closing a circuit or relay to close the main gasvalve or valves.

Primary air fans shall be equipped with an approvedpositive method of preventing the burner fromstarting or remaining in operation in the event offailure of the primary air source.

h. Plain Pilot. Each burner shall be equipped with aplain gas pilot or gas pilots in addition to thesafety pilot to insure smooth lighting of theburner so that there will be no roll back or heavydetonations during lighting off period, except thatwhere the burner unit is of such size that safetypilot only will light burner smoothly, the plainpilot may be omitted. The pilot flame shalleffectively ignite the gas at the burner and shallbe so designed as to be adequately protected fromdrafts where required. Pilot flames shall notbecome extinguished by the main burners whenstarting or stopping them in a normal manner. Luminous flame pilots shall not show carbon depositduring the period of tests when adjusted accordingto the manufacturer's instructions.

Where the vertical or upshop type of burnerconsisting of a multiplicity of heads is used, aminimum of one plain gas pilot for each eight headsmust be used. In arriving at the number of pilots,the safety pilot will be counted as one plain gaspilot above eight heads; below eight heads theremust be at least one plain gas pilot and a safetypilot unless the Building Inspector approves alesser number.

i. Safety Pilots and Controls. Where the total inputto any gas burning device exceeds 400,000 BTU allburners shall be equipped with approved flamerectifier, flame conductivity or scanner cell typesof safety controls. Heat sensitive type of pilotswill not be permitted.

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Safety pilots shall be so designed that uponinsertion of pilot after removal for repairs orcleaning, pilot will be in the same positionrelative to main burner as when originallyinstalled. The pilot flame shall be in such aposition that in the event of a drop in gaspressure, the contact between the pilot flame andflame rod or scanner shall be broken before thepoint where the pilot light will fail to reliablyignite the main burner.

The control system used in conjunction with theelectronic safety pilot shall be of a type to lockout the main flame in approximately five (5)seconds or less, and shall require a manual re-setoperation before flame can be reestablished. Allsafety pilots shall be equipped with positiveclosing automatic gas valves, and shall close inthe event of an indicated failure.

Forced or induced draft equipment and natural drafttype burners with supplementary air fans withmodulating or closing air shutters with an input inexcess of 1,000,000 BTU per hour shall be soarranged that a pre-purge period of approximatelythirty (30) seconds is obtained. This pre-purgeshall occur before establishing ignition onintermittent or interrupted pilots and beforeestablishing main flame or continuously provedpilots.

Where a switch is installed in a low water cut-offcircuit to keep the circuit to the safety shut-offvalve closed when blowing down water column, switchmust be of the push button type so that whenoperator releases button the control circuit tosafety shut-off valve will be normal.

All pilot burners shall be supported in such amanner that their position relative to the mainburner or burners will remain fixed.

Pilot lines shall be connected to vertical supplylines when possible. When horizontal line is used,connection must be made on top or side. Connectionmust be ahead of all controls, (except pressureregulator on medium and high pressure) and mainshut-off valve and shall be provided with separateshut-off cock. Where gas pressure is greater than

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that for which pilots are designed, a pressureregulator (pilot regulator) must be installed onthe downstream side of pilot line shut-off cock.

Safety shut-off valves shall be tested to assuregas tightness of the seam when in a closedposition; the valve assembly shall be gas tight inall positions. Packing glands shall be designed sothat the valve will not be made inoperative byexcessive tightening of the packing nut.

j. Venting of Controls. Pressure regulators, slowopening gas valves and other gas equipmentrequiring venting shall be vented to a safe pointoutside of the building, or to a point in thebreaching or stack, where the volume or flow of airis such that a combustible mixture cannot beobtained.

k. Draft Controls. Approved draft controls are to beused on all equipment, except when forced andinduced draft is used in conjunction with controlsthat modulate the forced or induced draft in thedirect ratio with the fuel modulation, and shall beused with forced or induced draft modulatingsystems when they are attached to a stack which maydisturb fuel air ratio due to its draft intensityto the equipment.

(1) Barometric Draft Controls: These draftcontrols are to be of the "gas" type control,free to swing both ways. Barometric typedraft controls shall have a cross sectionalarea equal to approximately seventy-fivepercent (75%) of the cross sectional area ofthe breaching from equipment which they areregulating.

(2) Mechanical Draft Controls: This type ofcontrol may use hydraulic pressure steam, airor electricity as an actuating medium andshall be so arranged that they will program tothe open position before ignition isestablished or interrupted or intermittentpiloted equipment, and before main flame isestablished on constantly proved pilotequipment and shall be equipped with apositive means of delaying the equipment,before the open position is obtained.

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l. Dual Fuel Equipment. All dual fuel equipment,using gas as one of the fuels must comply with therequirements of this section, in controlling thegas equipment and shall be so arranged that noadjustments are changed or required when changingfuels. Dual fuel equipment shall be equipped withan on-off-on type of transfer switch that will notpass through the center off position withoutstopping in the "off" position.

m. Inspection and Tests. All installations shall becarefully tested for the proper operation of allcontrols and electrical circuits. Upon completionof fire testing and adjustment, a complete testreport shall be filed with the Building Inspectorin accordance with forms supplied by the BuildingInspector.

Piping shall be carefully tested for leaks.

n. Industrial Applications. On certain industrial andprocess applications, where certain parts of theseregulations cannot be met as required, individualapproval must be obtained from the BuildingInspector before a permit will be issued orinstallation can be made.

o. Air Intake. Gas burning equipment in buildingswhere adequate air for combustion is not assured,shall have fresh air intakes of the permanentlyopen type, or with closeable dampers. Air intakeswith closeable or automatic type dampers thatprogram with the equipment, shall be equipped witha positive lockout device to prevent operation ofthe equipment unless the damper is open to apredetermined position.

4. Incinerators: Domestic or Portable Type.

a. General Provisions. Portable or domesticincinerators or rubbish burners may be installedand vented into the same flue with gas firedboilers, furnaces or heating devices, providing theincinerator or rubbish burner installation conformsto the following requirements:

(1) The incinerator shall be designed with gas orconstant electrical auxiliary heating elements

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to facilitate the drying and combustion ofgarbage.

(2) When gas fired, the incinerator shall conformto the American Standard Requirements forDomestic Gas-Fired Incinerators.

(3) When equipped with electric heaters, theincinerator shall conform to standardsestablished by the Underwriters' Laboratories,Inc., and features shall meet the requirementsof the standards for gas-fired equipment.

(4) The incinerator shall bear the manufacturer'stag or name plate permanently attached statingthe fuel for which the unit is designed andthe input rating.

b. Venting. The vent from the incinerator shall beconnected to a masonry flue by means of a smokepipe constructed of metal suitable for operation of1800 degrees F. temperature. Where such smoke pipeis within eighteen (18) inches of combustiblematerials, such materials shall be provided withone-half (½) inch fireproof insulation.

Where the masonry chimney is of Type A constructionand is provided with a glazed tile flue liner or avitrified bell type flue liner installed with bellsupward, of ample size for the load of theincinerator in addition to other appliancesconnected thereto, but not less than eight (8)inches equivalent diameter, the metal chimney linerrequired elsewhere in this Code, may be omitted.

Where the masonry flues are not provided with tileflue liners as above described then the flue shallbe provided with flue liner constructed ofmaterials approved for operation with temperaturesof 1200 degrees F., this liner to receive the ventsfrom the incinerator and other devices and to besized for the total load.

An approved spark arrester shall be installed onthe chimney or flue to which the incinerator isconnected.

c Piping. The piping for incinerator shall conformto the requirements of Paragraph 2-x.

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CHAPTER 7-04

CHIMNEYS AND FLUES

SECTIONS:

7-0401. Owner's Duty to Provide Proper Chimney.7-0402. Chimney and Flue Draft Measurements.7-0403. Regulation of Drafts.7-0404. Draft Measurements.

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7-0401. OWNER'S DUTY TO PROVIDE PROPER CHIMNEY. It shall bethe duty of the owner of any new building in which it is hereafterproposed to install any warm air furnace, steam or hot water boileror any conversion burner using a liquid or solid fuel, for use inconnection with a heating system in such building to provide anall-purpose chimney with at least a seven (7) inch flue towithstand a minimum temperature of 1000 degrees F., therebyproviding a chimney suitable for utilizing all types of fuel; andin all old construction where new heating plants are to beinstalled, the chimney shall be inspected and repaired so as to beput in first-class condition and an approved chimney linerinstalled if required by the Building Inspector.

7-0402. CHIMNEY AND FLUE DRAFT MEASUREMENTS. Before anyfinal approval shall be given by the Building Inspector on aninstallation of any type of combustion unit herein covered by theprovisions of this title, the person, firm or corporation or theiragents making the installation of the burner shall make in thepresence of the inspecting officer a test or tests for determiningthe amount of draft actually present upon or in connection with anyand all burners attached to the chimney or flue, if requested bythe Building Inspector.

7-0403. REGULATION OF DRAFTS. Chimney and flue drafts shallbe set or regulated in such a manner as to be in accordance withthe specifications of the burner's manufacturer or in compliancewith the American Society of Heating and Ventilating Engineers.

7-0404. DRAFT MEASUREMENTS. Draft measurements shall berecorded upon the final inspection approval certificate if requiredby the Building Inspector.

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CHAPTER 7-05

GASOLINE STOVES

SECTIONS:

7-0501. Standards for the Installation, Maintenance and Use of Gasoline Stoves for Cooking and Heating.

7-0502. Classification.7-0503. Standards - Location of Stoves.7-0504. Location of Outside Tanks.7-0505. Fuel Piping.7-0506. Care and Attendance.

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7-0501. STANDARDS FOR THE INSTALLATION, MAINTENANCE AND USEOF GASOLINE STOVES FOR COOKING AND HEATING. These standards shallapply to all new and existing installations and all persons shallbe governed by the provisions hereinafter set forth whether or notspecifically named.

7-0502. CLASSIFICATION. The following classifications aredesigned for the purpose of giving recognition to various types ofstoves now being manufactured and used, on the basis of the hazardsinvolved in operation and use:

Class A. Stationary Stoves Furnished with Anti-floodingDevice: Stoves of this classification feed the fuel to theburners either by gravity or pressure from the tank located atthe stove, whose liquid capacity does not exceed approximatelyone (1) gallon, or employ pressure feed or fuel from anoutside tank whose fuel capacity does not exceed six (6)gallons and in all cases are furnished with anti-floodingdevices. Stoves of this classification are regarded asconstituting the least danger.

Class B. Stationary Stoves Not Furnished With Anti-floodingDevice: Stoves of this classification feed the fuel to theburners either by gravity or pressure from a tank located atthe stove, whose liquid capacity does not exceed approximatelyone (1) gallon, or employ pressure feed or fuel from anoutside tank whose fuel capacity does not exceed six (6)gallons and are not furnished with anti-flooding devices. Stoves of this classification are regarded as more dangerousthan those of Class A. The possibility of draftsextinguishing the burner flame is of prime importance inconnection with Class B Stoves, which are not provided withanti-flooding devices.

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Class C. Portable Heaters Equipped with Anti-flooding Device: Heaters of this classification feed the fuel to the burner bypressure from a tank located at the heater whose liquidcapacity does not exceed approximately one (1) gallon and aredesigned and intended to be readily carried from one place toanother as desired and used as a source of local heat and arealways equipped with anti-flooding devices. Heaters in thisclassification are regarded as even more dangerous than thosecovered in Class A and B since their gasoline supply is inclose proximity to the flame and they are portable, wherebyrendering it possible that they may be placed too close tocombustible material.

7-0503. STANDARDS - LOCATION OF STOVES: Stoves should beplaced on the floor or on permanent foundations and never on boxes,shelves, or temporary supports. Locations in close proximity towooden shelves, cupboards or other combustible materials shall notbe allowed.

Stoves shall be located away from windows or other openingswhere drafts may blow curtains or draperies into contact with theflame.

Stoves provided with outside storage tanks shall be attachedto the floor to prevent breaking of fuel lines.

7-0504. LOCATION OF OUTSIDE TANKS. Outside tanks which mayhave a fuel capacity of not exceeding six (6) gallons (U.S.) andwhich feed the fuel either directly to the burner or to theone-gallon tank mounted on the stove shall be so located that noartificial light will be required while filling.

Installation of such tanks shall be made outside the buildingwell removed from all openings where escaping fuel or vapor mayenter or accumulate. Tanks shall be suitably protected fromextreme heat and accumulations of ice and snow.

7-0505. FUEL PIPING. Fuel piping for connecting outsidetanks to stationary stoves shall be 3/16 inch O.D. seamless drawncopper or brass tubing having a wall thickness of at least 3/64inch and shall be of suitable quality to withstand the effects ofhandling and manipulation in installation and use. Tubing shall beprovided with approved fittings not depending upon ordinary solderfor strength.

The piping shall not be secured in place with staples or otherfittings likely to injure the tubing. Tubes shall be run in ironpipes from supply tank to inside of building wall and be protected

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by wooden moldings or iron pipe where the distance above the flooris less than seven (7) feet.

Fuel piping shall in no case be concealed behind walls orceilings and shall be protected by sleeves where passing throughfloors, partitions or walls.

Fuel piping shall be supported in ceiling runs at intervalsnot exceeding six (6) feet by metal strips or the equivalent.

When piping is installed near electric wiring, therequirements of the National Electrical Code shall be observed. Where tubes cross wires, pipes or metal girders, protection frommechanical injury shall be provided.

Tubing shall be thoroughly tested after all connections havebeen made and shall not show loss within one (1) hour at a pressureof fifty (50) pounds per square inch.

Tubing shall be provide