Laars NeoTherm NTH Installation And Operation Instructions Manual

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NeoTherm Boilers and Water Heaters Page 19SCHED 40 METAL PIPE CAPACITY FOR 1.50 SPECIFIC GRAVITYUNDILUTED PROPANENOMINAL PIPE SIZE @ 11" W.C. INLET AND 0.5" W.C. PRESSURE DROPSIZE 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"LENGTH MAXIMUM CAPACITY IN THOUSANDS OF BTU PER HOUR20 200 418 787 1616 2422 466440 137 287 541 1111 1664 320560 110 231 434 892 1337 257480 94 197 372 763 1144 2203100 84 175 330 677 1014 1952NOTES: 1. Follow all local and national LP gas codes for line sizing andequipment requirements. 2. Verify that inlet gas pressure remains between4 and 13 inches of water column before and during operation.Source: ANSI Z223.1-80 National Fuel Gas Code.Table 6D.EQUIVALENT LENGTHS OF STRAIGHT PIPE FOR TYPICAL SCH 40 FITTINGSNOMINAL PIPE SIZEFITTING 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"LINEAR FEET90° ELBOW 3.6 4.4 5.2 6.6 7.4 8.5TEE 4.2 5.3 6.6 8.7 9.9 12Table 6B.SCH 40 METAL PIPE CAPACITY FOR 0.60 SPECIFIC GRAVITY NATURAL GASNOMINAL PIPE SIZE @ 0.30" W.C. PRESSURE DROPLENGTH 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"FT CUBIC FEET OF GAS PER HOUR20 92 190 350 730 1100 210040 130 245 500 760 145060 105 195 400 610 115080 90 170 350 530 990100 150 305 460 870Table 6C.NEOTHERMNATURAL GASREQUIREDCU FTSIZE / HR.80 80105 105150 150199/210 199/210285 285399 399500 500600 600750 750850 850Table 6A.TO SIZE PIPING:Measure linear distance from meter outlet to lastboiler. Add total input of all boilers and divide by1000 to obtain cu ft / hr required. Add totalequivalent length of fittings used according toTable 6B. Align total length (pipe and fittings) onleft side column of Table 6C with highest cubicfeet of gas required.Notes:Consult and confirm with Applicable Fuel GasCode before beginning work. Verify gas inletpressure is between 4 and 13 in W.C. beforestarting boiler.SECTION 5.Pump Requirements5.1 NeoTherm Boiler Flow and HeadRequirements (see Table 7)NORMAL WATER*Flow H/L Temp Flow H/L TempSize gpm feet Rise °F lpm m Rise °C150 19 57 15 72 17.4 8199 25 28 15 95 8.5 8285 36 33 15 98 10.1 8399 50 35 15 189 10.7 8500 63 28 15 239 8.5 8600** 60 24 19 227 7.3 11750** 68 35 21 257 10.7 12850** 68 26 24 257 7.9 13*Maximum water hardness of 10 grains per gallon allowed.**See section 6B.6 on page 30 for pump information.Table 8. NeoTherm Water Heater Flow Data.5.2 NeoTherm Water Heater Flow and HeadRequirements (see Table 8)TEMPERATURE RISE IN °F20°F 25°F 30°F 35°F 40°FFLOW H/L FLOW H/L FLOW H/L FLOW H/L FLOW H/LSIZE GPM FT GPM FT GPM FT GPM FT GPM FT80 7.6 14.9 6.1 10.1 5.1 7.1 4.3 5.8 3.8 4.6105 10 23.1 8 17 6.7 12.4 5.7 9.6 5 7.6150 14.3 28.5 11.4 19 9.5 13.6 8.1 11.2 7.1 8.8210 20 24.1 16 16.7 13.4 11.6 11.3 9 9.9 6.9285 27 25.5 22 17.5 18 14 15 10.5 13 8399 39 28 31 20 25 14.5 22 11 19 9500 48 24 38 16 32 12 27 9 24 8600 58 44 46 31 38 22 33 18 29 15750 72 37 58 23 48 17 41 13 36 10850 81 33 65 22 54 15 46 10 41 8TEMPERATURE RISE IN °C11°C 14°C 17°C 19°C 22°CFLOW H/L FLOW H/L FLOW H/L FLOW H/L FLOW H/LSIZE lpm m lpm m lpm m lpm m lpm m80 29 4.5 23 3.1 19 2.2 16 1.8 14 1.4105 38 7.0 30 5.2 25 3.8 22 2.9 19 2.3150 54 8.7 43 5.8 36 4.1 31 3.4 27 2.7210 76 7.3 61 5.1 51 3.5 43 2.7 37 2.1285 102 7.8 83 5.3 68 4.3 57 3.2 49 2.4399 148 8.5 117 6.1 95 4.4 83 3.4 72 2.7500 182 7.3 144 4.9 121 3.7 102 2.7 91 2.4600 220 13.4 174 9.4 144 6.7 125 5.5 110 4.6750 273 11.3 220 7.0 182 5.2 155 4.0 136 3.0850 307 10.1 246 6.7 204 4.6 174 3.0 155 2.4Table 7. Water Flow Requirements.