Assessments - 1, GPA: 4
(
)
)
|
Facilidade de uso
6. Match notches in hood top cover with unit top cover screws. Insert hood flange between top cover flange and unit. Tighten screws. 7. Insert outdoor-air inlet screens and spacer in channel created by lower filter retainer and filter support bracket. 8. Attach remaining shorter section of filter support bracket. Fig.19—EconomizerMotorControlModuleLocation Fig.17—EconomizerDamperAssembly—EndView Fig.20—Outdoor-AirHoodComponentLocation LED—Light-EmittingDiodeFig.18—EconomizerMotorControlModule Fig.21—SealStripLocation 11 Fig.22—Outdoor-AirHoodDetails START-UP Use the following information and Start-Up Checklist on page CL-1 to check out unit PRIOR to start-up. Unit Preparation — Check that unit has been installed in accordance with these installation instructions and applicable codes. Compressor Mounting — Loosen the compressor hold- down bolts until sidewise movement of the washer under each holddown bolt head can be obtained. Do not loosen completely as bolts are self-locking and will maintain adjustment. Internal Wiring — Check all electrical connections in unit control boxes; tighten as required. Refrigerant Service Ports and Valves — Each 48HJ unit has 2 Schrader-type service ports per circuit; one on the suction line and one on the liquid line. Be sure that the caps on the ports are tight. The units also have 2 service valves per circuit; one on the suction line and one on the discharge line. Be sure all valves are open. Crankcase Heater — Crankcase heater is energized as long as there is power to the unit. IMPORTANT: Unit power must be on for 24 hours prior to start-up. Otherwise, damage to compressor may result. Evaporator Fan — Fan belt and pulleys are factory installed. See Tables 3A, 3B, 4, and 5 for Fan Performance Data. Remove tape from fan pulley and adjust pulleys on 48HJ015 units as required. See Evaporator-Fan Performance Adjustment section on page 19. Be sure that fans rotate in the proper direction. See Table 6 for air quantity limits. See Table 7 for static pressure drops for accessories and options. See Fig. 23 and 24 for fan performance using horizontal adapter and power exhaust. To alter fan performance, see Performance Adjustment sections on page 19. Condenser-Fans and Motors — Condenser fans and motors are factory set. Refer to Condenser-Fan Adjustment section on page 20 as required. Be sure that fans rotate in the proper direction. Return-Air Filters — Check that correct filters are installed in filter tracks (see Table 1). Do not operate unit without return-air filters. Outdoor-Air Inlet Screens — Outdoor-air inlet screens must be in place before operating unit. Accessory Field-Installed Economizer Adjustment — Remove filter access panel. Check that outdoor- air damper is closed and return-air damper is open. Economizer operation and adjustment are described in Base Unit Operation section on page 17; and Economizer Adjustment section on page 20. NOTES: 1.Dimensionsareinmillimeters. 2.The50DP900211highstaticregainadapteraccessorymaybeusedtoprovidehorizontalsupply/return. NOTE:The50DP900211horizontalsupply/returnadapteraccessoryimproves48HJfanperformancebyincreasingexternalstaticpres- surebyamountshownabove. Fig. 23 — Horizontal Supply/Return Fan Performance With 50DP900211 High Static Regain Adapter 12 Table 3A — Fan Performance Data, 48HJ015, 208/230, 460-V Units AIRFLOW (CFM) EXTERNAL STATIC PRESSURE (in. wg) 0.2 0.4 0.6 0.8 1.0 Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp 3750 741 510 0.58 854 715 0.82 952 921 1.05 1041 1130 1.29 1124 1344 1.53 4000 773 647 0.74 882 859 0.98 978 1071 1.22 1064 1285 1.46 1145 1502 1.71 4250 806 796 0.91 912 1015 1.16 1004 1233 1.40 1089 1452 1.65 1167 1674 1.91 4500 839 958 1.09 942 1183 1.35 1032 1407 1.60 1114 1632 1.86 1191 1859 2.12 4750 873 1134 1.29 972 1365 1.56 1060 1595 1.82 1140 1825 2.08 1215 2056 2.34 5000 908 1323 1.51 1003 1560 1.78 1089 1796 2.05 1167 2032 2.32 1241 2268 2.58 5250 942 1527 1.74 1035 1769 2.02 1118 2011 2.29 1195 2252 2.57 1267 2494 2.84 5500 978 1745 1.99 1067 1992 2.27 1148 2240 2.55 1223 2487 2.83 1293 2733 3.11 5750 1013 1978 2.25 1099 2230 2.54 1179 2484 2.83 1252 2736 3.12 1321 2988 3.40 6000 1049 2227 2.54 1132 2483 2.83 1210 2742 3.12 1282 2999 3.42 1349 3257 3.71 6250 1085 2491 2.84 1166 2751 3.13 1241 3015 3.44 1312 3279 3.74 1378 3541 4.03 AIRFLOW (CFM) EXTERNAL STATIC PRESSURE (in. wg) 1.2 1.4 1.6 1.8 2.0 Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp 3750 1203 1562 1.78 1277 1784 2.03 1349 2010 2.29 1417 2240 2.55 1483 2473 2.82 4000 1222 1724 1.96 1294 1950 2.22 1364 2180 2.48 1431 2413 2.75 1495 2650 3.02 4250 1242 1900 2.16 1313 2129 2.43 1381 2362 2.69 1446 2599 2.96 1509 2839 3.23 4500 1264 2089 2.38 1333 2322 2.65 1399 2558 2.91 1463 2799 3.19 1525 3042 3.47 4750 1286 2290 2.61 1354 2528 2.88 1419 2769 3.15 1482 3012 3.43 1542 3259 3.71 5000 1310 2507 2.86 1376 2748 3.13 1440 2992 3.41 1501 3240 3.69 1560 3489 3.98 5250 1335 2737 3.12 1399 2983 3.40 1...