RBI Futera XLF Installation And Operation Instructions Manual

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RBI Futera XLF Installation And Operation Instructions Manual Manual pdf 24 page image

Finned copper tube gas boilers & water heaters – Boiler Manual24Table 10 Gas pipe capacities (natural gas)Maximum pipe capacity in ft3/hr, based on 0.60 specific gravity natural gas at a pressure of 0.5 psig or less and a 0.3" WC pressure drop,for iron pipe with nominal size below, and for total equivalent length (in feet):Pipesize 10 20 30 40 50 60 70 80 90 100 125 150 175 200 2502" 3,050 2,100 1,650 1,450 1,270 1,150 1,060 990 928 870 777 710 648 602 5342½" 4,800 3,300 2,700 2,300 2,000 1,850 1,690 1,600 1,480 1,400 1,240 1,130 1,030 960 8513" 8,500 5,900 4,700 4,100 3,600 3,250 3,000 2,800 2,610 2,500 2,190 2,000 1,820 1,700 1,5004" 17,500 12,000 9,700 8,300 7,400 6,800 6,110 5,800 5,330 5,100 4,460 4,100 3,720 3,460 3,0705" 31,700 21,800 17,500 15,000 13,300 12,000 11,100 10,300 9,650 9,110 8,090 7,320 6,730 6,260 5,5506" 51,300 35,300 28,300 24,200 21,500 19,500 17,900 16,700 15,600 14,800 13,100 11,900 10,900 10,100 8,990Note: For propane piping — Multiply the gas volume capacities above by 0.62 for propane flow capacities in ft3/hr. Multiply the propaneflow capacity by 2500 Btu/ft3 to determine the propane Btu/hr capacity for a given pipe size and length.GAS SUPPLY PIPINGCheck the boiler/water heater rating plate to makesure that the boiler/water heater is for the type of gasthat will be used. If it isn’t, do not connect the boiler/water heater to the gas supply. Gas supply piping mustbe in accordance with the National Fuel Code, ANSIZ223.1-latest revision or applicable provisions of thelocal building codes. Canadian installations mustcomply with CAN/CGA B149.1 or B149.2 InstallationCode. Failure to comply with this warning can result inextensive property damage, severe personal injury ordeath!The Futera XLF comes from the factory ready to be piped to the gassupply. If for any reason the boiler/water heater is not for the typeof gas available at the installation site, call your RBI representative toresolve the problem.With all units operating the gas supply pressure (naturalgas) at the safety shutoff valve inlet must be:Minimum 3.5 in, 88.9 mm, WCMaximum 14 in, 356 mm, WCGas pressure not to exceed a maximum of a (1.0 in WC)drop when firing from minimum input to full load ofthe gas supply line and all the appliances running.Tables 10 and 11 should be used to ensure that the gas supply pipingis sized properly. If more than one appliance is supplied by the samesupply pipe, the piping must be sized based on the maximum possibledemand. Do not neglect the pressure drop due to pipe fittings.Table 10 should be used in conjunction with Table 11 to ensure thatthe gas supply piping has the capacity to meet the demand.Figure 16 depicts the proper way to connect the boiler/ waterheater to the gas supply piping. The manual shut-off valve MUST beinstalled in the supply piping. It should be installed 5 ft, 1.5 m abovethe floor where required by local codes. Provide a sediment trap atthe bottom of the vertical section of the gas supply pipe upstream ofthe gas controls.Figure 16 Gas Supply Piping