Re: gas for dryer
Posted by PHIL on January 20, 2002 at 14:53:13:
In response to Re: gas for dryer
: : I need to run a stretch of gas line in my garage for
: : a gas dryer. There is already gas in the garage for
: : the central heat and the dryer is only located about
: : six or seven feet away. The furnace is fed by black
: : pipe coming into the garage with a shutoff valve
: : to which is connected the flex tubing going to the
: : furnace.

: : My question is, if I connect a tee downstream of the
: : valve and run a stretch of flex tubing over to the
: : gas dryer (I'll add an additional shutoff valve
: : just before going into the dryer) will I get enough
: : flow rate for the furnace and the dryer to run
: : properly? Or, should I put a tee in the black pipe
: : and run black pipe over to the dryer followed by a
: : shutoff valve just before the dryer?

: : I appreciate any suggestions here.....

: 121 0.0 Material For Gas Piping
: 1210.1 All Pipe Used For The Installation, Extension, Alteration, Or Repair Of
: Any Gas Piping Shall Be Standard Weight Wrought Iron Or Steel (Galvanized
: Or Black) Or Yellow Brass (Containing Not More Than Seventy-Five (75) Percent
: Copper). Approved Pe Pipe May Be Used In Exterior Buried Piping Systems.

: 1210.2 All Such Pipe Shall Be Either New, Or Shall Previously Have Been
: Used For No Other Purpose Than Conveying Gas; It Shall Be In Good Condition
: And Free From Internal Obstructions. Burred Ends Shall Be Reamed To The Full
: Bore Of The Pipe.

: 1210.3 All Fittings Used In Connection With The Above Piping Shall Be Of
: Malleable Iron, Yellow Brass (Containing Not More Than Seventy-Five (75)
: Percent Copper), Or Approved Plastic Fittings.

: 1210.4 All Valves And Appurtenances Used In Connection With The
: Above Piping Shall Be Of A Type Designed And Approved For Use With Fuel
: An Accessible Shutoff Valve Of A Type Set Forth In Section
: 1211.13,Shall Be Installed In The Fuel Supply Piping Outside Of Each
: Appliance And Ahead Of The Union Connection Thereto, And In Addition To
: Any Valve On The Appliance. Shutoff Valves Shall Be Within Three (3) Feet
: Of The Appliance. Shutoff Valves May Be Located Immediately Adjacent
: To And Inside Or Under An Appliance When Placed In An Accessible And
: Protected Location And When Such Appliance May Be Removed Without Removal
: Of The Valve. Shutoff Valves May Be Accessibly Located Inside Wall
: Heaters And Wall Furnaces Listed For Recessed Installation Where Necessary
: Maintenance Can Be Performed Without Removal Of The Shutoff Valve.
: 1) Listed Metal Appliance Connectors Shall Have An Overall Length
: Of Not To Exceed Three (3) Feet Except A Range Or Dryer Connector,
: Which May Not Exceed Six (6) Feet .
: (2) No Part Of Such Connector Shall Be Concealed Within Or Extended
: Through Any Wall, Floor, Partition, Or Appliance Housing
: Demand In
: Appliance Btu/H Watts/H
: Barbecue (Residential).. 50,000 14,050
: Bunsen Burner................ 3,000 879
: Domestic Clothesdryer........ 35,000 10,255 35,0132
: Domestic Gas Range......... 65,000 19,045
: Domestic Recessed Oven Section........ 25,000 7,325
: Domestic Recessed Top Burner Section......... 40,000 11,720
: Fireplace Log Lighter (Commercial)........ 50,000 14,650
: Fireplace Log Lighter (Residential).......... 25,000 7,325
: Gas Engines (Per Horsepower)........... 10,000 2,930
: Gas Refrigerator.................. 3,000 879
: Mobile Homes (See Appendix E)
: Steam Boilers(Per Horsepower)................ 50,000 14,650
: Storage Water Heater
: Up To 30 Gallon (114l)....................... 30,000 8,790
: Storage Water Heater
: 40 (151 L) To 50 Gallon (189 L) Tank... 50,000 14,650

: Table 12-2
: Support Of Piping

: Size Of Pipe
: Table 12-3 Gas Meter
: Size Of Gas Piping
: Maximum Delivery Capacity Of Cubic Feet Of Gas Per Hour Of Ips Pipe Carrying
: Range Natural Gas Of 0.60 Specific Gravity Based On Pressure Drop Of 0.5 Inch
: Water Column

: Pipe Size Length In Feet
: Inches,
: Feet>>>> 10' 20' 30' 40' 50' 60' 70' 80' 90' 100' 125'
: 1/2 174 119 96 82 73 66 61 56 53 50 44
: 3/4 363 249 200 171 152 138 127 118 111 104 93
: 1 684 470 377 323 286 259 239 222 208 197 174
: 1-1/4 1404 965 775 663 588 532 490 456 428 404 358
: 1217.0 Required Gas Piping Size
: 1217.1 Where The Maximum Demand Does Not Exceed Two Hundred Fifty
: (250) Cubic Feet Per Hour (2 L/Sec.) And The Maximum Length Of Piping
: Between The Meter And The Most Distant Outlet Is Not Over Two Hundred Fifty
: (250) Feet (76 M), The Size Of Each Section And Each Outlet Of Any System Of Gas
: Piping Shall Be Determined By Means Of Table 12-3. Other Systems Within
: The Range Of Table 12-3 May Be Sized From That Table Or By Means Of The
: Methods Set Forth In Section 1217.3.
: 1217.2 To Determine The Size Of Each Section Of Pipe In Any System Within
: The Range Of Table 12-3, Proceed As Follows:
: (1) Measure The Length Of The Pipe From The Gas Meter Location To The
: Most Remote Outlet On The System.
: (2) In Table 12-3 Select The Column Showing That Distance, Or The Next
: Longer Distance If The Table Does Not Give The Exact Length.
: (3) Starting At The Most Remote Outlet, Find In The Vertical Column Just
: Selected The Gas Demand For That Outlet. If The Exact Figure Of Demand Is
: Not Shown, Choose The Next Larger Figure Below In The Column.
: (4) Opposite This Demand Figure, In The First Column At The Left In Table
: 12-3 Will Be Found The Correct Size Of Pipe.
: Fuel Piping 1217.2 - 1218.4

: (5) Using This Same Vertical Column, Proceed In A Similar Manner For
: Each Section Of Pipe Serving This Outlet. For Each Section Of Pipe,
: Determine The Total Gas Demand Supplied By That Section. Where Gas
: Piping Sections Serve Both Heating And Cooling Equipment And The
: Installation Prevents Both Units From Operating Simultaneously, Only The
: Larger Of The Two Demand Loads Need Be Used In Sizing These Sections.
: (6) Size Each Section Of Branch Piping Not Previously Sized By
: Measuring The Distance From The Gas Meter Location To The Most Remote
: Outlet In That Branch And Follow The Procedures Of Steps 2, 3, 4, And 5
: Above.
: Note: Size Branch Piping In The Order Of Their Distance From The Meter
: Location, Beginning With The Most Distant Outlet Not Previously Sized.
: 1217.3 For Conditions Other Than Those Covered By Section 1217.1, Such As
: Longer Runs Or Greater Gas Demands, The Size Of Each Gas Piping System Shall
: Be Determined By Standard Engineering Methods Acceptable To The
: Administrative Authority And Each Such System Shall Be So Designed That
: The Total Pressure Drop Between The Meter Or Other Point Of Supply And Any
: Outlet When Full Demand Is Being Supplied To All Outlets, Will At No Time
: Exceed Five-Tenths (0.5) Inches (12.7 Mm) Water Column Pressure.
: 1217.4 Where The Gas Pressure May Be Higher Than Fourteen (14) Inches
: (355.6 Mm) Or Lower Than Six (6) Inches Of Water Column, Or
: When Diversity Demand Factors Are Used, The Design, Pipe, Sizing, Materials,
: Location, And Use Of Such Systems First Shall Be Approved By The
: Administrative Authority. Piping Systems Designed For Pressures Higher
: Than The Serving Gas Supplier'S Standard Delivery Pressure Shall Have Prior
: Verification From The Gas Supplier Of The Availability Of The Design Pressure.
: Systems Using Undiluted Liquefied Petroleum Gas May Be Sized Using Table
: 12-7 For Eleven (11) Inches (279.4 Mm) Water Column And In Accordance With
: The Provisions Of Sections 1217.1 And 1217.2.




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