RBI Boiler Installation And Operation Instructions Manual

Contents

8412.2 - Pipe sizingfor natural gasRefer to Figure 12-2 for pipe lengthand diameter. For additional gaspipe sizing information, refer to ANSIZ223.1 (or B149.1 for Canadianinstallations).Natural gas supply pressurerequirements1. Pressure required at the gas valveinlet pressure port:• Maximum 13”W.C. with no flow(lockup) or with heater off.• Minimum 3”W.C. with gas flowing(verify during high fire).2. Install 100% lockup gas pressureregulator in supply line if inletpressure can exceed 13”W.C. atany time. Adjust lockup regulatorfor 13”W.C. maximum.12 - INSTALLATION - Gas supply12.3 - Propane GasWARNING!!! These heatersare typically shipped readyto fire on natural gas. Checkheater rating plate to determinewhich fuel the heater is set for.If set to natural gas, it may beconverted to LP by followinginstruction on Section 12.6 or12.7. Failure to comply couldresult in severe personal injury,death, or substantial propertydamage.Pipe sizing for propane gasContact gas supplier to size pipes,tanks, and 100% lockup gas pressureregulator.Propane supply pressurerequirements:1. Adjust propane supply regulatorprovided by the gas supplier for13”W.C. maximum pressure.2. Pressure required at gas valve inletpressure port:• Maximum 13”W.C. with no flow(lockup) or with heater off.• Minimum 3”W.C. with gas flowing(verify during high fire).WARNING!!! Ensure thatthe high gas pressure regulatoris at least 6 - 10 ft upstreamof the appliance. Failure tocomply could result in severepersonal injury, death, orsubstantial property damage.Iron Pipe size (in)Nominal: 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4Actual ID: 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Capacity in Cubic Feet of Gas per Hour10 273 514 1060 1580 3050 4860 8580 1750020 188 353 726 1090 2090 3340 5900 1200030 151 284 583 873 1680 2680 4740 966040 N/A 243 499 747 1440 2290 4050 827050 N/A 215 442 662 1280 2030 3590 733060 N/A 195 400 600 1160 1840 3260 664070 N/A 179 368 552 1060 1690 3000 611080 N/A 167 343 514 989 1580 2790 568090 N/A 157 322 482 928 1480 2610 5330100 N/A 148 304 455 877 1400 2470 5040125 N/A 131 269 403 777 1240 2190 4460150 N/A 119 244 366 704 1120 1980 4050175 N/A N/A 224 336 648 1030 1820 3720200 N/A N/A 209 313 602 960 1700 3460250 N/A N/A 185 277 534 851 1500 3070NOTICE! Maximum pipe capacity is based on a 0.60 specific gravity gas at a pressure of 0.5 PSIG and a0.3”WC pressure dropFigure 12-2 Gas pipe capacity for natural gas