Table 4BÐWet Coil Air Delivery
Unit 50JX 024-060 (Deduct 10% for 208v)*
UNIT | MOTOR SPEED |
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0.0 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | ||||
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| Low | Watts | 275 | 273 | 271 | 270 | - | - | - | - | - | - | - | |
| Cfm | 923 | 844 | 754 | 669 | - | - | - | - | - | - | - | ||
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024 | Med | Watts | - | - | - | 359 | 353 | 350 | 347 | 341 | - | - | - | |
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Cfm | - | - | - | 941 | 876 | 814 | 737 | 622 | - | - | - | |||
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| High | Watts | - | - | - | - | - | - | 447 | 439 | 431 | 423 | - | |
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| Cfm | - | - | - | - | - | - | 968 | 869 | 765 | 659 | - | ||
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| Low | Watts | 276 | 276 | 272 | - | - | - | - | - | - | - | - | |
| Cfm | 963 | 929 | 781 | - | - | - | - | - | - | - | - | ||
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30 | Med | Watts | 375 | 377 | 371 | 362 | 354 | 350 | - | - | - | - | - | |
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Cfm | 1202 | 1170 | 1079 | 976 | 884 | 807 | - | - | - | - | - | |||
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| High | Watts | - | - | - | - | 469 | 449 | 435 | 428 | - | - | - | |
| Cfm | - | - | - | - | 1174 | 988 | 828 | 718 | - | - | - | ||
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| Low | Watts | 462 | 451 | 431 | 411 | 394 | 381 | - | - | - | - | - | |
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| Cfm | 1374 | 1290 | 1205 | 1116 | 1020 | 916 | - | - | - | - | - | ||
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36 | Med | Watts | 523 | 506 | 490 | 471 | 449 | 426 | - | - | - | - | - | |
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Cfm | 1500 | 1408 | 1301 | 1190 | 1082 | 977 | - | - | - | - | - | |||
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| High | Watts | - | 645 | 628 | 610 | 595 | 584 | 575 | - | - | - | - | |
| Cfm | - | 1474 | 1369 | 1267 | 1169 | 1069 | 962 | - | - | - | - | ||
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| Low | Watts | 620 | 600 | 586 | 574 | 562 | 548 | 530 | 510 | 487 | 462 | 439 | |
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| Cfm | 1662 | 1621 | 1581 | 1540 | 1496 | 1447 | 1392 | 1331 | 1263 | 1186 | 1103 | ||
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42 | Med | Watts | - | - | - | - | 686 | 661 | 634 | 606 | 577 | 547 | 517 | |
Cfm | - | - | - | - | 1722 | 1662 | 1594 | 1515 | 1427 | 1330 | 1227 | |||
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| High | Watts | - | - | - | - | - | - | - | 757 | 730 | 704 | 682 | |
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| Cfm | - | - | - | - | - | - | - | 1669 | 1577 | 1486 | 1402 | ||
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| Low | Watts | 620 | 600 | 586 | 574 | 562 | 548 | 530 | - | 487 | - | - | |
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| Cfm | 1662 | 1621 | 1581 | 1540 | 1496 | 1447 | 1392 | 1331 | 1263 | - | - | ||
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48 | Med | Watts | 763 | 747 | 729 | 709 | 686 | 661 | 634 | 606 | 577 | 547 | 517 | |
Cfm | 1917 | 1868 | 1822 | 1774 | 1722 | 1662 | 1594 | 1515 | 1427 | 1330 | 1227 | |||
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| High | Watts | - | - | - | 852 | 832 | 809 | 784 | 757 | 730 | 704 | 682 | |
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| Cfm | - | - | - | 1982 | 1914 | 1839 | 1757 | 1669 | 1577 | 1486 | 1402 | ||
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| Low | Watts | 597 | 592 | 578 | 526 | 460 | 452 | 445 | - | - | - | - | |
| Cfm | 2265 | 2190 | 2101 | 2033 | 1974 | 1869 | 1614 | - | - | - | - | ||
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60 | Med | Watts | 754 | 730 | 707 | 687 | 671 | 658 | 646 | 630 | 603 | 558 | 486 | |
Cfm | 2383 | 2282 | 2202 | 2134 | 2070 | 2005 | 1935 | 1858 | 1771 | 1667 | 1576 | |||
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| High | Watts | 901 | 876 | 856 | 836 | 813 | 785 | 755 | 723 | 696 | 681 | 687 | |
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| Cfm | 2480 | 2383 | 2301 | 2233 | 2175 | 2122 | 2066 | 1998 | 1910 | 1788 | 1619 | ||
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*Air delivery values are based on operating voltage of 230 v or 460 v, wet coil, without filter or electric heater. Deduct filter and electric heater pressure drops to obtain static pressure available for ducting.
NOTES:
1.Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator coil frosting may occur at airflows below this point.
2.Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended. 3. Deduct 10% for 208v.
The charging label and the tables shown refer to system tempera- tures and pressures in cooling mode only. A refrigerant charging label is attached to the outside of the service access door. If charge level is suspect in Heating mode, reclaim all refrigerant and charge to nameplate amount. (This information may be obtained from the physical data table also.)
IMPORTANT: When evaluating the refrigerant charge, an indi- cated adjustment to the specified factory charge must always be very minimal. If a substantial adjustment is indicated, an abnormal condition exists somewhere in the cooling system, such as insuf- ficient airflow across either coil or both coils.
REFRIGERANT CHARGE Ð The amount of refrigerant charge is listed on the unit nameplate and /or the physical data table. Refer to the Refrigeration Service Techniques Manual, Refrigerants Section.
NO CHARGE Ð Check for leak. Use standard evacuating tech- niques. After evacuating system, weigh in the specified amount of refrigerant (refer to system data plate).
LOW CHARGE COOLING Ð Use Cooling Charging Charts (Figs.
met. Note that charging charts are different from type normally used. Charts are based on charging the units to correct superheat for the various operating conditions. Accurate pressure gage and temperature sensing devices are required. Connect the pressure gage to the service port on the suction line. Mount the temperature sensing device on the suction line and insulate it so that the outdoor ambient does not effect the reading. Indoor air CFM must be within the normal operating range of the unit.
TO USE COOLING CHARGING CHARTS Ð Take the outdoor ambient temperature and read the suction pressure gage. Refer to the chart to determine what the suction temperature should be. NOTE: If the problem causing the inaccurate readings is a refrigerant leak, refer to Check for Refrigerant Leaks section.
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