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<br />1-48 <br /> <br />Provide bleeder line or other approved method of insuring against gas <br />leakage to boiler during shut down periods. <br /> <br />SECTION 3 - 7 MAIN SRUT-OFF COCK <br /> <br />A manually opera1(ed approved type lubricated shut-off cock shall be <br />installed at each boiler or furnace ahead of all control valves and regulators <br />except pilot line. This cock shall be so 10cateQ that it is readily accessible <br />and shall clearly indicate the on or off position or direction of rotation <br />to open and close. Cock shall be provided with a suitable operating handle <br />permanently attached. Gate or globe valve will not be acceptable. <br /> <br />. <br />SECTION 3 - 8 ELECTRIC CONTROL VALVES <br /> <br />Electric control valves shall be installed according to the instructions <br />furnished by the manufacturer. <br /> <br />SECTION 3 - 9 ELECTRIC WIRING <br /> <br />All electrical connections shall be made in conformity with the provisions <br />of all codes relating to the installation of electric wiring within the <br />Village of Roseville. <br /> <br />SECTION J - 10 GAS PRESSURE REGULATOR <br /> <br />A gas pressure regulator approved by the Gas Inspector shall be installed <br />on all gas burner installations. <br /> <br />SECTION 3-11 LIMITING DEVICES <br /> <br />Each boiler or furnace shall be equipped with safety devices to limit <br />high steaTll pressures or water temperatures, low-water level and high air <br />temperatures. Where boiler or furnace is equipped with so-called power <br />burner, where air for combust:i,.on is furnished .by lIleans other than a natural <br />draft stack or where boiler burners are so sized and designed to require <br />forced or induced draft or both, the gas and air supply shall be equipped with <br />suitable controls to prevent functioning of the gas supply until air supply <br />is adequate for proper combustion, or in the event of failure of air supply <br />to shut off the gas sup~lr. <br /> <br />SECTION 3-11.1 <br /> <br />Where forced draft equipment is used, a manual cutout control switch may <br />be installed, subject to approval, to permit lighting off the burner under <br />natural draft, normal operation under forced draft to remain under safety <br />control. <br /> <br />SECTION 3-11.2 <br /> <br />Safety devices operated electrically shall not depend upon the clOSing <br />of a circuit to shut off the main gas supply. This requirement shall not <br />be construed as prohibiting the use of electrical regulating devices, provided <br />the required safety devices are also installed. Contro~s shall be so connected <br />that maximum inherent safety provided by such controls will be obtained. <br /> <br /><: <br />\ <br />