Stimmen - 2, Durchschnittliche Bewertung: 3.5 ( )

Hersteller: Carrier Dateigröße: 2.05 mb Dateiname: Unterrichtssprache:

Tables 8 and 9 show both heating and cooling airflows at various external static pressures. Refer to these tables to determine the airflow for the system being installed. NOTE: Be sure that all supply- and return-air grilles are open, free from obstructions and adjusted properly. A WARNING Disconnect electrical power to the unit before changing blower speed. (Be sure to turn off gas supply before disconnecting electrical power.) Electrical shock can cause personal injury or death. A CAUTION Do not change the blower-motor lead connections on 460-v units from the factory setting. Damage to unit may result. 16 Table 5 — Air Delivery (Cfm) at Indicated Temperature Rise and Rated Heating Input NOMINAL SIZE HEATING UNIT TEMPERATURE RISE (°F) INPUT (Btuh) 20 25 30 35 40 45 50 55 60 65 70 75 80 NLT018,024,030 40,000 - - 987 846 740 658 592 538 493 - - - - NHT024; NMT030 60,000 - - - - - 987 888 808 740 683 634 592 - NLT036,042 60,000 - - 1481 1269 1111 987 888 808 740 - - - - NHT030; NMT036,042 80,000 - - - - - 1316 1185 1077 987 911 846 790 - NLT048 80,000 - 2370 1975 1693 1481 1316 1185 1077 - - - - - NLT060 80,000 2962 2370 1975 1693 1481 1316 1185 - - - - - - NET036,042 96,000 - - - - 1777 1580 1422 1292 1185 1096 1015 - - NHT036.042; NMT048 100,000 - - - 2116 1851 1646 1481 1346 1234 1139 - - - NMT060 100,000 - - 2469 2116 1851 1646 1481 1346 1234 - - - - NVT036,042; NHT048 120,000 - - - - - - 1777 1616 1481 1367 1269 1185 1111 NHT060 120,000 - - - 2539 2222 1975 1777 1616 1481 1367 - - - NVT048,060 144,000 - - - - - 2370 2133 1939 1777 1641 1523 1422 - NOTE: Dashed areas of the table do not fall In the approved temperature rise range of the unit Table 6 — Superheat Charging Table* TEMP (F) 50 52 54 56 58 60 62 64 66 68 70 72 74 76 55 9 12 14 17 20 23 26 29 32 35 37 40 42 45 60 7 10 12 15 18 21 24 27 30 33 35 38 40 43 65 — 6 10 13 16 19 21 24 27 30 33 36 38 41 70 - - 7 10 13 16 19 21 24 27 30 33 36 39 75 — - — 6 9 12 15 18 21 24 28 31 34 37 80 - - - - 5 8 12 15 18 21 25 28 31 35 85 - - - - - - 8 11 15 19 22 26 30 33 90 — — - - — - 5 9 13 16 21 24 27 31 95 - - - - - - - 6 10 14 18 22 25 29 100 - - - - - - - - 8 12 15 20 23 27 105 - - - - - - - - 5 9 13 17 22 26 110 - - - - - - - - - 6 11 15 20 25 115 - - - - - - - - - - 8 14 18 23 •Superheat at suction service valve. NOTE: Do not attempt to charge system under these conditions; refrigerant slugging may occur Table 7 — Required Suction-Tube Temperature (F)* TEMP (F) 61.5 64.2 67.1 70.0 73.0 76.0 79.2 82.4 85.7 0 35 37 39 41 43 45 47 49 51 2 37 39 41 43 45 47 49 51 53 4 39 41 43 45 47 49 51 53 55 6 41 43 45 47 49 51 53 55 57 8 43 45 47 49 51 53 55 57 59 10 45 47 49 51 53 55 57 59 61 12 47 49 51 53 55 57 59 61 63 14 49 51 53 55 57 59 61 63 65 16 51 53 55 57 59 61 63 65 67 18 53 55 57 59 61 63 65 67 69 20 55 57 59 61 63 65 67 69 71 22 57 59 61 63 65 67 69 71 73 24 59 61 63 65 67 69 71 73 75 26 61 63 65 67 69 71 73 75 77 28 63 65 67 69 71 73 75 77 79 30 65 67 69 71 73 75 77 79 81 32 67 69 71 73 75 77 79 81 83 34 69 71 73 75 77 79 81 83 85 36 71 73 75 77 79 81 83 85 87 38 73 75 77 79 81 83 85 87 89 40 75 77 79 81 83 85 87 89 91 'Temperature at suction service valve 17 Table 8 — Dry Coil Air Delivery (Cfm)* at Indicated External Static Pressure and Voltage — Horizontal Discharge (Without Filter) 48 V-PH-HZ MOTOR SPEED 208 V 230 V or 460 V in. wg 0.0 0.1 0.2 0.3 0.4 0.5 0.0 0.1 0.2 0.3 0.4 0.5 NLT018, NLT024, NHT024 208/230-1-60 Lowf, Med** Watts 451 427 407 383 365 348 501 477 457 433 415 398 Cfm 1185 1129 1088 1026 979 922 1256 1195 1148 1081 1031 971 Hi Watts 511 483 464 440 420 402 561 533 514 490 470 452 Cfm 1370 1291 1221 1142 1063 1003 1442 1359 1285 1202 1119 1056 NLT030, NMT030 208/230-1-60 Lowf, Med** Watts 519 507 492 477 455 431 569 557 542 527 505 481 Cfm 1184 1163 1150 1134 1105 1064 1248 1226 1211 1194 1164 1120 Hi Watts 620 602 581 559 532 493 670 652 631 609 582 543 Cfm 1443 1414 1376 1329 1279 1197 1519 1489 1449 1399 1347 1261 NHT030, NLT036 NMT036, NLT042 NMT042 208/230-1-60 208/230-3-60, 460-3-60ft Lowf, Med** Watts 560 544 527 505 482 461 610 593 575 500 524 494 Cfm 1515 1452 1389 1308 1227 1105 1597 1530 1464 1378 1293 1164 Hi Watts 670 650 631 602 573 542 720 701 680 653 625 594 Cfm 1765 1705 1621 1521 1383 1254 1857 1795 1708 1603 1457 1321 NET036, 042 208/230-1-60 208/230-3-60 460-3-60tt Lowf, Med“ Watts 873 847 814 785 758 734 987 945 911 877 850 809 Cfm 1717 1690 1645 1597 1550 1496 1979 1922 1859 1802 1734 1667 Hi Watts 1075 1030 995 960 930 900 1121 1087 1046 1017 981 952 Cfm 2119 2062 1995 1913 1863 1793 2135 2066 1998 1931 1858 1795 NHT036, NVT036 NHT042, NVT042 208/230-1-60 208/230-3-60 460-3-60tt Lowf, Med** Watts 740 700 660 615 580 540 755 725 680 650 610 575 Cfm 1913 1820 1736 1645 1544 1428 1976 1909 1806 1714 1603 1495 Hi Watts 790 760 720 690 650 610 850 820 780 750 715 675 Cfm 2032 1942 1844 1...

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