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<br />250 <br /> <br />6-19, Luminous.flame pilots shall not show carbon deposits when adjusted aeco!'ding <br />to the manufacturer's instructions. <br /> <br />6-196 Where escapement pilots are used, their flames shall be f~ely ignited by the <br />constant burning pilot. <br /> <br />6-l96A The flames from each burner shall freely ignite the gas from adjacent burners <br />when operating at the normal gas pressure or when the main control valve is <br />regulated to deliver about oDe-third (1/3) the full gas rate, except where <br />additional pilots are provided. If the additional pilot is a runner type <br />pilot, this pilot must be proven by a safety mechanism before the main burner <br />valve- can open. <br /> <br />f{6,.191 Burner flames shall not flash back upon immediate ignition, nor upon turning <br />the gas cock until the gas rate to the burner is about one third (1/3) the <br />full supply. <br /> <br />6-198 -Burner flames shall not fiash back when the gas is turned on or off by any <br />automatic control meohanism. <br /> <br />6-199 <br /> <br />6-200 <br /> <br />Main bumer .flames shall ignite freely from each eonstant pilot when the <br />main control valve is regulated to deliver about one-third (1/3) the full <br />gas rate and when pilot flame is reduced to minimum point at which it will <br />actuate the safety 'tiMnlostatic device. The Wolding port of multiple port <br />pilots must satisfactorily ignite the ~ burner if the :ignition port, <br />are stopped. <br /> <br />Burners shall be of such design that ignition from pilot:3or pnots will <br />carry to all 'ports or burner heads protected QY the pilot at inputs from <br />one-third (1/3) to maximum rating. <br />When ignition is made in a nonu4 manner, the flames shall not flash outsid e <br />the appliance. <br />Burners shall not ~l gas through air openings in mixer faces when oper- <br />ating at the normal bUrner pressure. <br />Note: In maldng the test under 6-193 and 6-196, care shall be exelrcised to <br />prevent the acc\lJlU1ation 01' unburned ias in the appliance or flues which <br />might result in explosion or fire. <br /> <br />The fiue gas temperature as taken on the appliance side 01' the draft hood <br />shall not exceed 4800F. above '\;hat 01' the air temperature surrounding the <br />appliance. The c mcentration of CO2 shall not exceed 9%, the concentration <br />01' CO shall not exceed .04%, the co-.ntJation 01' exygen shall not be less <br />than ,% not more than 10%. , <br /> <br />6-202 The rate 01' flow of the gas shall be adjusted to wi thin plus or minus two (2) <br />percent 01' the required hourly BTtJ input rating at the mani.told pressure <br />. specified by the manufacturer. When the prevailing pressure is less ~an <br />the manifold pressure specified, the gas rate shall be adjusted at the <br />prevailing pressure. The appliance shall be allowed to operate until the <br />stack temperature becomes stabilieed, after which a sample of the flue <br />products shallU.. taken at a point in the flue after the outlet of the <br />appliance but ahead of the draft hood, and analyzed for carbon dioxide, <br />carbon monoxide and oxygen <br /> <br />6-201 <br /> <br />6-203 The rate of flow of gas shall be adjusted to wi thin plus ,% or minus 1,% of <br /> <br />-41- <br />