L.B. White Pilot Light Ignition Installation And Service Manual

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Tank SizingInstallationInstructionsATTENTION■ The following is supplied for informational purposesonly.■ Consult your LP gas supplier for specific requirements.A tank is propane storage container ranging in size from 150gallons to 10,000 gallons or larger. For agricultural heatingapplications, the tank sizes typically used are either 500gallons or 1,000 gallons with 1,000 gallons being the mostcommon. The size and quantity of tanks will vary and isdependent on the total heating load at the site.In determining tank size and quantity, several factors apply:■ Total heat load of the building--- To determine total load, add up the heat input(expressed in BTUH) for all gas-fired heaters,pressure washers, water heaters, etc., that will bedrawing vapor from the tanks.--- The heat input rating is located on the dataplate.■ The coldest outside air temperature at night that thetank(s) will be exposed to.■ Percentage of propane remaining in the tank prior torefill. Your fuel gas supplier will inform you at whatlevel a refill will normally occur.IMPORTANT■ Minimum vaporization of propane from liquid to vaporoccurs when temperatures are coldest and liquid levelof propane in the tank is lowest.■ Size the quantity of tanks for the lowest temperatureyou can expect in your area.Refer to the following table to identify the heat output oftanks at various temperatures and levels of fullness.EXAMPLE--- Select 1,000 gallon tank.--- Total heat load is 1,500,000 BTUH (6-AB250Heaters).--- Coldest nighttime temperature is -10º F.--- Tanks to be refilled by LP gas supplier when liquidpropane level is 30%.A. In the 1,000 gallon tank sizing chart, locate -10º F.outside temperature.B. Locate the column which identifies 30% of propaneremaining in the tank prior to refill.C. The intersection of these two variables identifies theheat input. In this example, a 1,000 gallon tank cansupply 276,500 BTUH. (See shaded area in table.)D. To determine the total number of tanks required:Total Heat Load of BuildingHeat Output of 1,000 Gallon Tankor1,500,000 BTUH/Building276,500 BTUH/TanksNOTE:Always round up fractions or decimals. See example.(Example: 5.4 tanks = 6 tanks). This will give you some extracapacity especially in cold weather, in the event your LP gassupplier cannot refill your tanks immediately.= 5.4 Tanks(6 Tanks)August 19992.3-11Tank Size Outside Percentage of Liquid Propane(Gallons) Temps. Remaining Prior to Refill(Heat Input Expressed in BTUH)º F. 80% 70% 60% 50% 40% 30% 20% 10%0 532,800 488,400 444,000 400,000 355,000 311,000 266,000 200,000500 -5 399,600 366,300 333,000 300,000 262,500 233,250 199,500 150,000-10 266,400 244,200 222,000 200,000 177,500 155,500 133,000 100,000-15 132,200 122,100 111,000 100,000 88,750 77,750 66,500 50,0000 949,000 870,100 791,000 712,000 633,000 553,000 474,000 356,0001,000 -5 711,900 652,575 593,250 534,000 474,750 414,750 355,500 267,000-10 474,600 435,050 395,500 356,000 316,500 276,500 237,000 178,000-15 237,300 217,525 197,750 178,000 158,250 138,250 118,500 89,000NOTE: For above table, multiply the results obtained by one of the following factors if nighttime temperatures willnot reach 0º F.: Temperature Multiplier+5º F. 1.25+10º F. 1.50+15º F. 1.75+20º F. 2.00