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Home My WebLink About~Master - Regulating Gas Heating Appliances ORDINANCE No. 633 RI-W AND REGUUTIONS GOVERNING GAS HFAT114G APPLIAIXES 7TITHIN r_-JE CITY OF ATZSJ' IOWA. AN ORDIT"ANCE TO PRESCRIBE RI US AIM UMIUATIOTNS FCH THE coNmirTioNg RECON- STRUCTION,, ALTERATION An, REPAIR OF OR COMTERSIOW TO GAS HEATIM APPLIANCES IN THE CITY OF AMESp IM`A; AND THE ISSUANCE OF PEIWITS T`TMF0R,* AIM FOR THE E1,47FORCEMEW OF SM11 RULES AND 'REGUIATIOITS A14D TO PRTSCRIBE, PrWALTIES FOR A VIOLATION THERE,OF. Be It Ordained by the City Counc.1.1 of the City of Ames, Iowa: Section le Permit Required. No persons firm or corporation shall be- gin work on the installationl construction, reconstruction., or conversion to any gas heating appliance in any building in the City of Anes., Iowa.9 unless and un- til he or it 'I'las a permit therefor. Section 2. Application for Permit* Any person., firm or corporation desiring a permit as required herein shall file with the City Manager an appli- cation in writing on the standard form provided by the City for such permits Section 3. It shall be unlawful for any person, firm or corporation., except those duly franchized by the City of Ames, Iovial or their duly authorized agents or employees, to installp constructp reconstruct., alter, repair or open the service pipe or service extensiong or set or remove the service meter or regulator,# or do any work of any kind on the parts of the gas supply system up to and including the meter. Section 4* No 2-as heatin,; appliance shall be installed which does not comply as to construction and perforriiance with a nationally recognized testing agency. Section 5. No devices employing or depending upon an electrical cur- rent shall be used to control or igmite a gas supply if the failure of the elec- trical current could result in t,e escape gas in-i)urned gas. Section 6* No ras water heater shall be installed in a room having, a cubic content of less than six hundred (600) cubic feet. Section 7, No gas-fired floor furnace shall be installed unless the installation complies with the following: (a) The floor furnace shall not be installed in a lo- cation Ykiere there is a possibility of the furnace being fl=Wwith water. (b) The flue pipe from the furnace shall not contact the earth. (c) No gas heating appliance or piping shall be in- stalled in any location which will obstruct any aisle or passap.,eway of any auditoriump public hall., or place of public assembly. (d) Yffiere a gas furnace or -.-as water heater is sup- ported on a frame floor'9 the portion of the floor acting as a support for such appliance shall be headed with a fraue work of material not lighter than the floor joists. (e) All has floor furnaces shall be equipped with a gas pressure regulator vhich shall be adjusted so the gas input does not exceed the rating as shown on the manu- facturer's nameplate attached to the furnace. (f) No automatic pilot shall be installed in the field on a floor furnace unless such automatic pilot has been speci- fically approved by the furnace manufacturer for use on such furnace. (g) All floor furnaces shall be required to have auto- matic safety pilots installed thereon* Sect-'Lon 8. No gas-fired boilers or furnaces for heating a building or buildixigs shall be installed and no boiler or furnace designed for other fuels shall be converted to the use of has unless the following regulation's are complied with: (a) Flit her a thermostatic pilot lights so constructed and adjusted that no gas can flow through the main burner unless Vie pilot light is burning,, or acme other similar type of safety device serving this same end shall be em- ployed. (b) The boiler or furnace shall be equipped with ap- proved safety devices arranged to limit high steam pressures or water temperatures or low water in steam boilers or high air temperatures in warm air furnaces. Safety devices oper- ating electrically shall not depend upon the closing of the circuit to shut off the main gas supply. Limiting controls and low water shut-off intended to disconnect the appliance from the electric power supply shall be connected into the appliance supply circuit on the supply side of all other control circuits. (c) Every gas boiler# furnaces space heater, unit heaters and water heater shall be connected to a flue which will conduct the flue gas to the outer air. The flue shall not be smaller than the flue opening on the boilers furnaces space heaters unit heater., or water heater. In case of conversion burners the section of the flue pipe between the outlet of the appliance and the draft hood shall not be less than one square inch per 7,500 hourly BTU input* In no case sj-,all this flue pipe be less than five (5) inches in diameter for central gas heating appliances nor less than four (4) inches in diameter for space heating appliances, and it shall not be larger than the next inte- gral inch diameter above the size given in the table (1) below: Table (1) Minimum Permissible Flue Sizes for Gas Burner Installations Input Rating Area of Flue Dianeter of B.T.V. Per Outlet Flue Pips Hour Square Inches Inches 94,,5oo 12*6 4 147.9000 19.6 5 2123,250 28.3 6 288050 38.5 7 377,250 50.3 8 477s0l00 63.6 9 (d) No damper is permitted to be used in a flue pipe. (e) A draft diverter shall be placed in and made a part of the flue pipe from the appliances or in the appli- ance itself* (f) The draft diverter shall be located at a point not lower than the top of tie hi(hest flue passage in the ap- pliance* -2- (g) All heating ,surfaces and f l.ueways of the plant shall be gas tight and shall be thoroughly cleaned of soot, carbon, and other foreirn substances before a conversion burner is installed. (h) At least one door on the gas-.Fired boiler or fur- nace stall be hinged to swing freely. (i) All conversion burners shall be installed so as to per- t accessibility* for inspection. (j) A manually operated shut.-off valve shall be in- stalled in the main gas supply line to a conversion burner and positioned at a point readily accessible for use and inspec+lon. (k) No vent pipe from a gas appliance shall be inter- connected with any other fuel vent pipe, smoke pipe, or flues unless such gas appliance is equipped with an automatic de- vice to prevent the escape of unburned gas at the main burner or burners. Section 9. No gas burning appliance shall be connected to any chim- ney or flue unless the chimney or flue construction or location complies with one of the followings (a) Flues of mAsonry, brick, or reinforced concrete small be required for (1) all t;as incinerators, and (2) all, appliances which may be converted to the use of a solid or liquid fuel. (b) Vent piping of noncaabustiblet corrosion-resistant material having gas tight joints may be used but shall not be installed in any outside wall or on the outside of any building. Section 10. Chimneys or flues installed for use of gas heating ap- pliances but which are not s ua table for solid or liquid fuels :oust be plainly and permanently labeled "Ti-,is flue is for use of gas burning appliances only". This label shall be attached at a point near *ere the vent pipe enters a wall, floor# or ceiling. Section 11. All chimneys and vents used as vents for gas appliances shall extend at least eighteen (18) inches above the topmost part of the roof of the building in -daich the appliance is basing used. Section 12. All venting ,Ball be so installed as to prevent raechani- cal injury to the vent. Section 13. A11 interior gas piping shall conform vdth Tables II and III as set forth below as regard to determining pipe sizes. Tnese tables give the B.T.U. capacity in cubic feet per hour for various sizes and lengths of pipe and pipe fittings. The tables are based on natural sass supplied at approxi- mately six (6) inches water column pressure at the meter and with a pressure drop of 0.2 inches and Specific Gravity o.65. fable II Namiiml Pressure pie drop in Len ttc of straight pipe in feet si e, tenths of 10 20 30 40 50 60 70 80 90 100 inc es an inch A 2 165 117 95 82 74 67 62 58 55 5 1 2 331 234 191 165 148 135 125 3.17 110 1 1 2 728 516 420 364 326 297 275 258 243 23 1 2 1,120 800 652 565 505 461 427 400 357 29 2 2 21287 1,618 1,319 1,143 1,023 933 864 809 762 ?2 2 2 3,743 21648 2,159 1,870 1,674 4527 4415 1,324 1,248 1,18 3 2 6,808 4017 3,927 3s402 3,045 2,778 2,573 2,407 2,269 2,15 4 2 14,282 10,104 8,239 7,137 69337 5027 5,398 5,050 4,761 4,51 6 2 42,318 29,938 24P411 21,145 18,924 17,264 15,993 149962 14,106 132,38 -3- Table III Additional Length of Pipe to be Added for Each Elbow or Tee Bend in the Line in Computing the Carrying Capacity of the Pipe. Pipe Size Additional Length Inches Required in Feet 3/4 1*3 1 1.7 1-" 2.6 3-3 2 5-1 2-j 6.7 3 9.3 4 U.0 6 24.0 Section 14* Standard full-weight mrought iron or steel pipe and fit- tings free from defects she11 be used in conveying has to appliances. Section 15. No pipe which has been previously used to convey water shall be used for conveying gas. Section 16. A31 gas heating appliance pressire regulators shall be vented to the o, taid* of the building or into the furnace. Section 17. A31 pipe and fittings sl`jall be tested for leaks by ap- plying a solution of soap and water to the exterior of the system before the appliance is permanently used. Section 13. Validity of Ordinance. Should any provision of this ordinance be held by any Court of cccipetent jurisdiction to be invalids such decision shall not affect the validity of the reiainder of the ordinance. Section 19* Violation of ordinance. Any persons firm, or corporation violating any provision of this ordinance shall,$ upon conviction thereof,, be -fined a such not exceeding 4,ZOO&OO and costs] and in default of payment thereof shall be committed to the City or County jail until such fine and costs are paid, not exceeding thirty days* Section 20* Repeal of Conflicting Ordinances. That all orc,inances or parts of ordinance. in conflict herewith are hereby repealed. Section 21. Ord-inance in effect. T'hds ordinance shall take effect and be in force from and after its passage and publication as requ:J.red by laws Passed this -21st day of July 1947# M�(/or Attests y Merk,Z Cit Published this 23rd day of July 19470 —4— i Moved by McCormick, seconded by Palmer, that Ordinance No. 633 be passed on its first reading. Voting; Aye: Knic;ht, I.TcCorraick, MacDonald, Palmer Voting; Nay: None Absent : Gray, Acheson July 14, 19 47 : Moved by Palmer, seconded by Knight, that Ordinance No, 633 be passed on its second reading. Voting; Aye: Gray, Kni ,ht, T.TeCormick, Palmer Voting Nay: None Absent: Acheson, T,,TacDonald July 21, 1947 : Moved by Acheson, seconded by Kni -,ht, that Ordinance No. 633 do now pass . Voting Aye : Gray, Knil;ht, McCormick, Acheson, Palmer Voting Nay; None Absent: MacDonald 1Aayor declared Ordinance No. 633 passed. I , J. W. Prather, City Clerk of the City of Ames, Iowa, do hereby certify that the above and foreoing Ordinance No. 633 was duly and CD properly passed and published in the Ames Daily Tribune the 23rd day of July, 1947. J. Prather, City Clerk