Good Practices for Gas Piping and ... - Uintah County, Utah

1 Questar Gas CompanyGood Practices forGas PipingandAppliance InstallationsGREEN STICKERThe proper installation and adjustments of a natural gas applianceis the responsibility of the installer. This book contains tables listingthe Btu content (heat value) and specific gravity of gas, derationfactors and altitudes throughout Questar s service area. Whennatural gas space heaters (furnaces, boilers, etc.) and water heatingequipment installations have been completed and properly adjustedfor the heat value of the gas and derated for altitude according tothe manufacturer s installation instructions, the installer shall fillout and post a GREEN STICKER on the appliance where it willbe visible by the customer.

2 The green sticker is an identifier whichwill let the customer or a repairman know that the appliance hasbeen properly July 1, 2002, any contractor installing or servicing naturalgas appliances in Utah must have a Natural Gas TechnicianCertification identification with them on the job site. Currently, thecertification is not required by Journeyman Plumbers. For furtherinformation, contact Rocky Mountain Gas 04/10/121 SECTION I(PREFACE)GENERALThe information contained in this booklet consists of guidance forplumbing and heating contractors engaged in the installation ofgas-fired equipment in the area served by Questar Gas Company(the Gas Company).

3 Information contained herein has been extracted from local codesadopted and incorporated by local authorities into heating orplumbing ordinances or codes and hence mandatory; however, thisbooklet does not attempt to set forth all requirements of any suchordinances or codes. Questar Gas Company recommends allplumbing and heating contractors become thoroughly familiar withthe requirements of the applicable ordinances or codes, containedin the International Fuel Gas Code, International Residential Code,International Mechanical Code, International Plumbing Code,National Electrical Code, American Gas Association standards,National Board of Fire Underwriters.

4 As well as with theinformation contained herein so gas installations made by themwill measure up to the proper standards of quality GAS COMPANY 1-800-323-5517 Gas line breaks, leaks, odor or pressure problems ONLY please call 1-800-541-2824 Additions and/or changes made to the good Practice Book areindicated by a line in the right I - GENERALP aragraphPage Not Covered by This Information .. 7 GENERAL SAFETY 8 SECTION II - 9 SECTION III - GAS Piping INSTALLATIONP aragraphPage Location .. Protection .. Connections .. Piping Piping Stainless Steel Tubing (CSST).

5 And Defects .. Gas .. 3110. Installation of Gas Piping .. 3111. Concealed Piping and Fittings .. 3312. Shut-off Valves .. 3313. Pressure Testing .. 3414. Meter Spot Test .. 3515. Appliance Connectors .. 3616. Required Gas Supply .. 3717. Required Gas Piping 383 SECTION IV - APPLIANCE INSTALLATIONP aragraphPage and Clearances .. Conditions Created by Mechanical Exhausting or Fireplaces .. in Garages .. and Prohibited Locations .. 485. Warm-Air Furnace .. Wall Furnaces .. Furnaces .. Unit Heaters .. 5010. Log 5011. Unvented Room Heaters.

6 5012. Gas Logs (Decorative Appliances) .. 5113. Water Heaters .. 5114. Gas Ranges .. 5215. Clothes 5216. Commercial Clothes 53 SECTION V - COMBUSTION AND VENTILATION AIRP aragraphPage for Combustion and Ventilation .. Air Ducts .. and Volume .. Located in Unconfined Spaces .. Located in Confined Spaces .. Air .. 594 SECTION VI - VENTINGP aragraphPage .. Required to be Vented .. Hoods .. and Vent Connector Materials .. and Vent Connector Clearances .. Connectors .. Vents/Connectors .. I Venting .. 7110. Category II, III, and IV Venting .. 7111.

7 Gas Vent 7212. Mechanical Draft 7313. Direct Vent 7314. Masonry Chimneys .. 7415. Prohibited Locations .. 75 SECTION VII - CONTROLS AND REGULATORSP aragraphPage Valves .. Pressure Regulators .. Regulators .. of MP Regulators .. for Diaphragm Type Valves .. Vents and Gas Vent Bleed orRelief Lines for Boilers (over 400,000 Btu)ANSI 825 SECTION VIII -PROCEDURES TO BE FOLLOWED TOPLACE AN APPLIANCE IN OPERATIONP aragraphPage .. to be Adjusted .. Rating .. Burner Burner Input .. Air Pilots .. Devices .. the Draft .. 9110. Instructions to the Customer.

8 9111. Operation/Installation 91 SECTION IX - MANUFACTURED HOME (MOBILE HOME),MODULAR HOME, AND PARK TRAILERP aragraphPage Home .. Homes .. Installation .. of Appliances Located inMobile 116 Formulas to AND FIGUREST ablePage Meter 28 IIPiping Support .. 32 IIIM eter Dial Test Times .. 35 IVMaximum Capacity of Pipe in CFH (4 oz.).. 41 VMaximum Capacity of Pipe in CFH (2 lb.).. 42 VICorregated Stainless Steel Tubing (CSST) .. 43 VIIDuct Sizes Round .. 61 VIII Vent 70 IXVent 73 Vent Tables .. 76 XStandard Deration Factors ..87-90 XIPressure Factor Multiplier.

9 93 XIIC onversion of Inches of Water Column toOunces of Gas Pressure .. 94 XIIIC locking Meter - Gas Input to Appliance inCubic Feet Per Hour (4 ounce) ..95-97 XIV Clocking Meter - Gas Input to Appliance inCubic Feet Per Hour (2 pound) ..99-100 XVOrifice Set .. Meter Set .. a House Piping System .. of Supply from Inside Building .. Supply from Crawl Space .. Supply from Attic .. Supply - One Opening .. 6310. Air Supply Horizontally .. 6411. Vent Terminations .. 7412. Automatic Valve .. 8013. Combination LP-Gas and Natural Gas System .. 11114. LP-Gas System.

10 11115. Manufactured Homes .. 1047 GENERAL STATEMENT1. Questar Gas Company is not responsible for the safe or properinstallation of gas Piping , equipment or appliances beyond itsmeter and does not, by the publication and distribution of thisbooklet, assume any such responsibility. However, if QuestarGas Company finds a gas-burning installation or appliancebeyond its meter which it considers to be unsafe, it is authorizedto refuse gas supply or gas service to such installation orappliance until the defect or condition which renders it unsafeis persons who are not authorized by Questar Gas Companyare prohibited from connecting or disconnecting Questar GasCompany s meters or service pipes or in any way altering orinterfering with Questar Gas Company s meters or service receipt of notice Questar Gas Company will promptlyattend to any work required in connection with its meters orservice pipes.