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<br />"type. Gate or. glove type valve will
<br />not be acceptable.
<br />Provide bleeder line or other ap-
<br />pro:ved method of insuring against
<br />gas. leakage to boiler during shut
<br />down periods.
<br />6-224 A manually operated approv-
<br />ed type lubricated' shut-off cock
<br />sha,ll be installed at each boiler or
<br />furnace ahead of all control valves
<br />and regulators except pilot line.
<br />This cock shall be so located that it
<br />is readily accessible and shall. de a.-
<br />Iy indicate the on or off position or
<br />'direction of rotation to open and
<br />close. Cock shall be provided with
<br />a suitable operating handle perman-
<br />ently attached. Gate Or globe valve
<br />will not be acceptable.
<br />6-225 Eectric control valves shall be
<br />installed according to the instruc-
<br />tions furnished by the. manufactur-
<br />er.
<br />6-226 All electrical connections shaH
<br />be made in c~nform.ity: with the pro-
<br />visions of all codesr~lating to the
<br />installation of electric wiring with-
<br />in the municipality.
<br />6-221 A gas pressure regulator ap-
<br />proved by the Heating Inspector
<br />shalt be installed on all gas burner:
<br />)nstallations.
<br />6-228 Each boiler or furnace shall
<br />be equipped with safety devices to
<br />limit high steam pressur~s or water
<br />temperatures, low-water level andi
<br />high air temperatures. Where boHf
<br />er or furnace is equipped with so-
<br />called power burner, where air for
<br />combustion ..is furnished by means
<br />other than a natural draft stack or
<br />where boiler burners . are so sized
<br />and desh;~ned to require forced or
<br />induced draft or both, the gas 1<ld
<br />air supply shall be eql.lipped with
<br />suitable controls to prevent func-
<br />tioning of the gas supply until air
<br />supply is adequate for.. proper com-
<br />bustion, or in the event 0'f failure
<br />of air supply to shut off the gas
<br />sUN'1Y)
<br />'3-22f""V1here forced draft equipment
<br />is u,.,ed, a manual cutout control
<br />switch may be installed, subject to
<br />approval, to permit lighting off~tl.e
<br />btFner under natural draft,.normal
<br />operation under forced draft to re-
<br />main under safety control.
<br />6-230 Safety devices operated elec-
<br />trically shall not derend upon the'
<br />dosing- of a circuit to shut off the
<br />main -gas supply. This 'fequirement
<br />shall not be construed as prohibit-
<br />ing the use of electrical regulating
<br />devices, provided the required safe-
<br />tydevices are also installed. Con-
<br />trols shall be so con'nec ted that
<br />maximum inherent safety provided
<br />lly such controls will be obtaIned.
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<br />age. The control may also be of the
<br />type that operates the uptake or
<br />outlet damper in conjunction with
<br />the gas control valve or valves,
<br />either by mechanical linkage or by
<br />change iri furnace pressure. The
<br />operating medium may be steam,
<br />electricity, air or hydraulic. If the
<br />gas control goes to open position.
<br />ppon failure of operating medium,
<br />then a means for shutting off the.gas
<br />supply upon the failure of the opere
<br />ating medium must be provided.
<br />6-237 Where quick opening or slow'
<br />opening gas control valve is con~
<br />nected to an inlet shutter on gas
<br />burner, the air inlet shutter or lou-
<br />vre only must be so. designed or
<br />counter-balanced as to drop to full
<br />open position in the event of. break-
<br />age Or failure of connectingmech-
<br />anislll. When the control is of the ~
<br />modulating type that operates the
<br />air inlet shutter or louvre only, shut-.
<br />ter or louvre must he so qesigned
<br />and counter-balanced as to. drop to
<br />full open position upon the failure
<br />or breakage of connecting linkage.
<br />The uptake or outlet damper must
<br />have an indicator or pointer visible
<br />to the operator to show the posi-
<br />tion of the damper in relation to
<br />open and closed position. Remote
<br />indicators are permitted where,
<br />necessary.
<br />6-238 When uptake damper is set in
<br />a fixed position such as will be used
<br />with "on" and "off' control..or the
<br />a fixed position such as will be used
<br />with "on" and "off" control Or the
<br />modulating type that operates on-
<br />ly the air louvres on the burner, a
<br />draft regulator must be used. This
<br />t'egulator shall be of the type that
<br />will reverse and open to the boiler
<br />room in the event of down or back
<br />drafts. Where control that operates
<br />the damper if used, or induced or
<br />forced draft fan or both is used, it.
<br />shall be optional as to the Use of
<br />a draft regulator. Draft hood or di-
<br />vertcr i~ not permissible.
<br />6-239 All gas burner installations in
<br />steam hoilers with an input exceed-
<br />ing 2500 ft. of gas per hour shail
<br />be equipped with indicating gauges
<br />for .. furn-ace, windbox and.. uptak:e
<br />draft to show combustion conditions
<br />and with flue gas analysis equip-
<br />ment of portable or fi'l'ed type. On
<br />installations exceeding 20,000 cu. ft.
<br />gas input per hour, equipment shall
<br />be installed for continuous indica_
<br />tion or recording of "curbon dioxide,
<br />oxygen or air flow-steam flow.
<br />6-240 All piping connections for gas
<br />burners under this section' of the;
<br />code shall ge properly sized for thr,
<br />design maximum load with a total
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<br />the drying and combust1.91t of
<br />garbage. ' .
<br />b. when gas fired shall conform
<br />to the Approval Requiremelll:
<br />for Domestic Gas Fired Incin-
<br />erators ASA-22L6~lQ49 and bear
<br />the AGA label.
<br />c. when equipped with electric
<br />heaters shall conform to stand-
<br />ards established by Underwrit-
<br />er's Laboratories and bear their
<br />label. The general construction
<br />features shall meet the require~
<br />ments of the above. standard for
<br />gas fired equipment.
<br />d. shall be approved by the Heat-
<br />ing Inspector; subject to a fee
<br />for approval of *~5.OQ payable
<br />with applicatiQn.i
<br />e.shaIJ be equippe4withapprov-
<br />ed spark, arrester~.
<br />f. shall be. equipped with manu
<br />facturer's tag or',' name plate
<br />permanently a.t~ached, stating
<br />fuel for which ubit i; d~sig~ed
<br />and input rating.
<br />,2-The',ventfrom t'he .iMindator
<br />shall be connected to a rriasOIiry
<br />ffue by means of ~'smoke Bipr
<br />constructed of me~al suhable f for
<br />operation in 1800 4~gJ:"ees F. tem-
<br />,perature. Where such smqke pipe
<br />is within 18" of cQmbustible ma.-
<br />, terials, such materials shall be pro-
<br />, vided with 0" fireprOOf insulation.
<br />. Where the masonry chimney h of
<br />Type A Underwrit~rs constructiOlt
<br />and is provided with a giazed tile
<br />flue liner or a vitrified bel! type
<br />'flue liner installed ",ith bell; up-
<br />ward, of ample size'for. the' load" of
<br />the incinerator inadditiori to other
<br />appliances connected the'reto but
<br />not less than 8" e~uival~~t diam-
<br />eter, the metal flue liner; required
<br />elsewhere in thiscode.may 'be
<br />ommitted.
<br />Where the masonr~ flues are not
<br />provided withtile.';flueIiners as
<br />above described, thell the,flue shall
<br />he provided with :flue Iinel con-
<br />structed of materiats approved for
<br />operation withte,mpet'atures of
<br />1200 degrees F., thislinertp re-
<br />cdve the vents bp:mth.e incirier-
<br />ator and other device_sand t'o be
<br />
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<br />
<br />. MATERtAM'
<br />7-1 All building m~l:erials shilllbc
<br />, "l"'" '.',', ,"
<br />of the quality to. m~~t the iritentof
<br />this cod~, a,ndshaIlr be new or ap,
<br />proved eqtlalhy th~'g-ovc~lling bOdy
<br />,of the municipality.~;~tIcase"6ere is
<br />reason to doubt:the~ualtty ofa ma"
<br />terial to be usel. i:J. a\building or
<br />,tructure, the goverhing bodyrn~y
<br />,require tests ,to bema?e t~:6$l~~
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