RBI FUTERA XLF Series Installation And Operation Instructions Manual

Also see for FUTERA XLF Series: Manual Control manual Manual Installation and operation instructions

RBI FUTERA XLF Series Installation And Operation Instructions Manual Manual pdf 22 page image

F d b b l & h B l M lFinned copper tube gas boilers & water heaters – Boiler Manual22FFGAS SUPPLY PIPINGCheck the boiler/water heater rating plateto make sure that the boiler/water heater isfor the type of gas that will be used. If it isn’t, do notconnect the boiler/water heater to the gas supply. Gassupply piping must be in accordance with the NationalFuel Code, ANSI Z223.1-latest revision or applicableprovisions of the local building codes. Canadianinstallations must comply with CAN/CGA B149.1 orB149.2 Installation Code. Failure to comply with thiswarning can result in extensive property damage, severepersonal injury or death!Th e 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 inches, 88.9 mm, W.C.Maximum 14 inches, 356 mm, W.C.Tables 10 and 11 should be used to ensure that the gas supply pipingis sized properly. If more than one appliance is supplied by thesame supply pipe, the piping must be sized based on the maximumpossible demand. Do not neglect the pressure drop due to pipefittings. Table 10 should be used in conjunction with Table 11 toensure that the 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 PipingTable 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 0.5" w.c. 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" 4,020 2,760 2,220 1,900 1,680 1,520 1,400 1,300 1,220 1,160 1,020 928 854 794 7042½" 6,400 4,400 3,530 3,020 2,680 2,430 2,230 2,080 1,950 1,840 1,630 1,480 1,360 1,270 1,1203" 11,300 7,780 6,250 5,350 4,740 4,290 3,950 3,670 3,450 3,260 2,890 2,610 2,410 2,240 1,9804" 23,100 15,900 12,700 10,900 9,660 8,760 8,050 7,490 7,030 6,640 5,890 5,330 4,910 4,560 4,0505" 41,800 28,700 23,000 19,700 17,500 15,800 14,600 13,600 12,700 12,000 10,600 9,650 8,880 8,260 7,3206" 67,600 46,500 37,300 31,900 28,300 25,600 23,600 22,000 20,600 19,500 17,200 15,600 14,400 13,400 11,900Note: 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.