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Carrier 48TF004-007, Installation, Start-Up And Service Instructions Manual

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Carrier 48TF004-007 Installation, Start-Up And Service Instructions Manual Download Page 58

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 111

Catalog No. 534-80103

Printed in U.S.A.

Form 48T-1SI

Pg 58

4-02

Replaces: 48TF-3SI

Book 1

4

Tab

1a 6a

Copyright 2002 Carrier Corporation

Summary of Contents for 48TF004-007

Page 1: ...ews from side duct opening covers and remove covers Using the same screws install covers on vertical duct openings with the insulation side down Seals around duct openings must be tight See Fig 1 Confirm before installation of unit that voltage amperage and circuit protection requirements listed on unit data plate agree with power supply provided Step 1 Provide Unit Support ROOF CURB Assemble and ...

Page 2: ...it Unit discharge con nections do not determine the use of drain connections either drain connection can be used with vertical or horizontal applications When using the standard side drain connection make sure the plug Red in the alternate bottom connection is tight before installing the unit To use the bottom drain connection for a roof curb installa tion relocate the factory installed plug Red f...

Page 3: ... 4 ft on each side 7 Direction of airflow 8 Connector packages CRBTMPWR001A00 and 002A00 are for thru the curb type gas Packages CRBTMPWR003A00 and 004A00 are for thru the bottom type gas connections CONNECTOR PKG ACCY B C D ALT DRAIN HOLE GAS POWER CONTROL CRBTMPWR001A00 1 911 16 551 1 4 406 13 4 44 5 3 4 19 NPT 3 4 19 NPT 1 2 12 7 CRBTMPWR002A00 11 4 31 7 CRBTMPWR003A00 1 2 12 7 NPT 3 4 19 NPT 1...

Page 4: ... Fuel Gas Code In Canada installation must be in accordance with the CAN1 B149 1 and CAN1 B149 2 installation codes for gas burning appliances For natural gas applications gas pressure at unit gas con nection must not be less than 4 in wg or greater than 13 0 in wg while unit is operating On 48TF005 006 007 high heat units the gas pressure at unit gas connection must not be less than 5 in wg or gr...

Page 5: ...325 325 325 325 EVAPORATOR COIL Enhanced Copper Tubes Aluminum Double Wavy Fins Rows Fins in 2 15 2 15 3 15 4 15 Total Face Area sq ft 4 17 5 5 5 5 5 5 EVAPORATOR FAN Centrifugal Type Quantity Size in Std 1 10 x 10 1 10 x 10 1 11 x 10 1 10 x 10 Alt 1 10 x 10 1 10 x 10 1 10 x 10 High Static 1 10 x 10 1 10 x 10 1 11 x 10 1 10 x 10 Type Drive Std Direct Direct Direct Belt Alt Belt Belt Belt High Stat...

Page 6: ...089 43 TFF KII 089 43 104 37 104 37 104 37 TFL 082 45 082 45 TFM 082 45 082 45 082 45 TFN 082 45 094 42 094 42 Thermostat Heat Anticipator Setting amps 208 230 v and 575 Stage 1 14 14 14 14 Stage 2 14 14 14 14 460 v Stage 1 14 14 14 14 Stage 2 14 14 14 14 Gas Input Btuh Standard Units TFD 74 000 74 000 74 000 Stage 1 Stage 2 TFE 74 000 115 000 115 000 115 000 TFF 82 000 115 000 120 000 150 000 120...

Page 7: ...ced Copper Tubes Aluminum Double Wavy Fins Face Split Rows Fins in 2 15 2 15 3 15 4 15 Total Face Area sq ft 4 17 5 5 5 5 5 5 EVAPORATOR FAN Centrifugal Type Quantity Size in Std 1 10 x 10 1 10 x 10 1 11 x 10 1 10 x 10 Alt 1 10 x 10 1 10 x 10 1 10 x 10 High Static 1 10 x 10 1 10 x 10 1 10 x 10 1 10 x 10 Type Drive Std Direct Direct Direct Belt Alt Belt Belt Belt High Static Belt Belt Belt Belt Nom...

Page 8: ...43 089 43 TMF KII 089 43 104 37 104 37 104 37 TML 082 45 082 45 TMM 082 45 082 45 082 45 TMN 082 45 094 42 094 42 Thermostat Heat Anticipator Setting amps 208 230 v and 575 Stage 1 14 14 14 14 Stage 2 14 14 14 14 460 v Stage 1 14 14 14 14 Stage 2 14 14 14 14 Gas Input Btuh Standard Units TMD 74 000 74 000 74 000 Stage 1 Stage 2 TME 74 000 115 000 115 000 115 000 TMF 82 000 115 000 120 000 150 000 ...

Page 9: ...b 0 inches c Condenser coil for proper airflow 36 in one side 12 in the other The side getting the greater clearance is optional d Overhead 60 in to assure proper condenser fan operation e Between units control box side 42 in per NEC National Electrical Code f Between unit and ungrounded surfaces control box side 36 in per NEC g Between unit and block or concrete walls and other grounded surfaces ...

Page 10: ...c Condenser coil for proper airflow 36 in one side 12 in the other The side getting the greater clearance is optional d Overhead 60 in to assure proper condenser fan operation e Between units control box side 42 in per NEC National Electrical Code f Between unit and ungrounded surfaces control box side 36 in per NEC g Between unit and block or concrete walls and other grounded sur faces control bo...

Page 11: ... temperature in accordance with thermostat installation instructions Connect thermostat wires to terminal board Route thermostat cable or equivalent single leads of colored wire from subbase terminals through connector on unit to low voltage connections shown in Fig 10 NOTE For wire runs up 50 ft use no 18 AWG American Wire Gage insulated wire 35 C minimum For 50 to 75 ft use no 16 AWG insulated w...

Page 12: ...lectrical Code TB Terminal Block LEGEND NOTES 1 Connect Y2 when unit is equipped with an economizer 2 Connect W2 when unit is equipped with two stages of heat Fig 10 Low Voltage Connections AHA Adjustable Heat Anticipator Field Wiring Factory Wiring Fig 11 Field Control Wiring Raceway 208 230 1 60 208 230 3 60 460 3 60 SIZE 007 ONLY 575 3 60 SIZE 007 ONLY 208 230 3 60 575 3 60 460 3 60 SIZES 004 0...

Page 13: ... 57 575 3 60 Std 518 632 3 7 31 0 1 4 0 8 1 3 3 5 5 15 6 35 Alt 2 1 6 0 15 7 37 High 2 6 6 3 15 7 56 48TF TM005 4 Tons 208 230 1 60 Std 187 254 23 3 118 0 1 4 1 4 3 5 6 34 0 34 0 40 40 32 32 129 129 Alt 4 9 35 4 35 4 45 45 34 34 133 133 208 230 3 60 Std 187 254 15 4 90 0 1 4 1 4 3 5 6 24 2 24 2 30 30 23 23 101 101 Alt 4 9 25 6 25 6 30 30 25 25 105 105 High 5 2 25 9 25 9 30 30 25 25 124 124 460 3 6...

Page 14: ...9 575 3 60 Std 518 632 3 7 31 0 1 4 0 8 1 3 3 7 2 15 8 36 Alt 2 1 7 7 15 9 39 High 2 6 8 0 15 9 58 48TF TM005 4 Tons 208 230 1 60 Std 187 254 23 3 118 0 1 4 1 4 3 5 6 40 0 40 0 45 45 38 38 134 134 Alt 4 9 41 4 41 4 50 50 40 40 138 138 208 230 3 60 Std 187 254 15 4 90 0 1 4 1 4 3 5 6 29 0 29 0 35 35 29 29 106 106 Alt 4 9 30 4 30 4 35 35 30 30 110 110 High 5 2 30 7 30 7 35 35 31 31 129 129 460 3 60 ...

Page 15: ...it is in the appropriate position determined by Fig 15 Tighten screws 9 Remove and save screws currently on sides of hood In sert screen Secure screen to hood using the screws See Fig 14 CONVENIENCE OUTLET An optional convenience out let provides power for rooftop use For maintenance personnel safety the convenience outlet power is off when the unit dis connect is off Adjacent unit outlets may be ...

Page 16: ...ved This step does not need to be performed on an EconoMi er2 with 4 to 20 mA control as there is no controller The entire EconoMi er2 does not have to be removed to retrieve the hood box The EconoMi er2 controller is mounted on top of the EconoMi er2 in the position shown in Fig 18 a Remove the screws holding the controller bracket in place Save screws Temporarily lower the con troller See Fig 20...

Page 17: ...han the return air the EconoMi er2 opens to bring in outdoor air for free cooling IMPORTANT The optional EconoMi er2 with 4 to 20 mA actuator signal control does not include the EconoMi er2 controller The EconoMi er2 actuator is operated by a 4 to 20 mA signal from an existing field supplied controller such as PremierLink control See Fig 26 for wiring information OFC C1 008 014 004 007 P S P S FIE...

Page 18: ...ESS PANEL INDOOR COIL ACCESS PANEL CAULK HERE TOP SIDE PANEL B TOP PANEL INDOOR COIL ACCESS PANEL 19 1 16 SCREW HOOD DIVIDER LEFT HOOD SIDE 33 3 8 Fig 18 EconoMi er2 Component Locations FILTER ACCESS PANEL OUTDOOR AIR OPENING AND INDOOR COIL ACCESS PANEL COMPRESSOR ACCESS PANEL Fig 19 Typical Access Panel Locations Fig 20 Temporary EconoMi er2 Controller Relocation Fig 21 Hood Box Removal Fig 22 I...

Page 19: ...1K 1S 1S1 2K 2 4 T P P1 Q Q1 AQ SD1 SD AC AC1 PG PG1 ECONOMIZER DRY BULB SENSOR Compressor Lockout N C YELLOW GRAY BLUE TAN INDOOR FAN EXHAUST FAN UNIT CONTROL FREE COOL MAXIMUM POSITION ADJUSTMENT 2 10 VDC CO2 SENSOR HARNESS AND PLUG MINIMUM POSITION ADJUSTMENT AQ1 T1 SR TR1 24 VAC COM ACTUATOR 4 3 5 2 8 6 7 1 10 11 9 12 NOTE 9 NOTE 6 NOTE 1 NOTE 5 NOTE 7 NOTE 2 NOTE 4 NOTE 3 ECONOMISER2 CONTROLL...

Page 20: ...m damper position the EconoMi er2 controller will maintain the actuator at minimum position 4 3 5 2 8 6 7 1 10 11 9 12 PINK VIOLET BLACK BLUE YELLOW NOTE 1 NOTE 3 RUN 500 OHM RESISTOR OPTIONAL CO SENSOR 4 20 mA OUTPUT 50HJ540573 ACTUATOR ASSEMBLY RED WHITE ECONOMISER2 PLUG DIRECT DRIVE ACTUATOR 2 NOTES 1 Switch on actuator must be in run position for economizer to operate 2 PremierLink control req...

Page 21: ... SO SR ECONOMISER2 CONTROLLER TR TR1 Fig 30 Enthalpy Changeover Set Points NOTE Remove the 620 ohm resistor between SR and before installing a differential enthalpy or adjustable dry bulb sensor Fig 31 Differential Enthalpy Wiring ...

Page 22: ...n Air Temperature RA Percent of Return Air TM Mixed Air Temperature As an example if local codes require 10 outdoor air during occupied conditions outdoor air temperature is 60 F and return air temperature is 75 F 60 x 10 75 x 90 73 5 F 2 Disconnect the mixed air sensor from terminals T and T1 3 Ensure that the factory installed jumper is in place across terminals P and P1 If remote damper positio...

Page 23: ...ion rate that is greater than the required ventilation rate for maximum occupancy A proportional anticipatory strategy will cause the fresh air supplied to increase as the room CO2 level increases even though the CO2 set point has not been reached By the time the CO2 level reaches the set point the damper will be at maximum ventilation and should maintain the set point In order to have the CO2 sen...

Page 24: ...d for maximum latent and sensible conditioning at maximum ventilation on a design day A calculation for leaving air temperature on a low ambient low ventilation day should also be done to determine the mixed air temperature of the return and pre conditioned outside air The design should produce air temperature some what near room conditions to prevent reheat of the air mixture The energy recovery ...

Page 25: ...E Before adjusting fan speed make sure the new fan speed will provide an air temperature rise range as shown in Tables 1A and 1B To change fan speed 1 Shut off unit power supply 2 Loosen belt by loosening fan motor mounting nuts See Fig 39 3 Loosen movable pulley flange setscrew see Fig 40 4 Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed In ...

Page 26: ... 1075 006 1300 1260 1220 1180 1140 1100 1060 1020 980 940 900 006 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332 1300 007 1460 1420 1380 1345 1305 1265 1225 1185 1150 1110 1070 007 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332 1300 MOTOR MOUNTING PLATE NUTS 0 1000 2000 3000 4000 5000 6000 0 05 0 10 0 15 0 20 0 25 0 30 0 35 STATIC PRESSURE in wg FLOW IN CUBIC FEET PER MINUTE cfm Static Press...

Page 27: ...vaporator entering air cfm should then be used in conjunction with the Fan Performance tables to determine blower rpm and watts UNIT 48TF TM EVAPORATOR FAN MOTOR UNIT VOLTAGE MAXIMUM ACCEPTABLE CONTINUOUS BHP MAXIMUM ACCEPTABLE OPERATING WATTS MAXIMUM AMP DRAW 004 Standard 208 230 0 34 440 2 8 460 1 3 575 1 3 Alternate 208 230 1 00 1000 4 9 460 2 1 575 2 1 High Static 208 230 2 40 2120 6 0 460 3 0...

Page 28: ...Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 900 581 0 12 119 673 0 18 179 736 0 22 219 805 0 25 249 865 0 29 288 911 0 34 338 1000 644 0 19 189 709 0 22 219 782 0 28 279 835 0 30 298 900 0 35 348 937 0 38 378 1100 687 0 22 219 746 0 26 259 806 0 30 298 867 0 35 348 929 0 40 398 964 0 40 398 1200 733 0 26 259 785 0 32 318 843 0 35 348 903 0 41 408 960 0 47 467 994 0 50 497 1300 754 0 29 288 826 0 38 ...

Page 29: ...6 1 8 2 0 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 900 1105 0 57 567 1140 0 63 622 1170 0 68 674 1198 0 73 723 1224 0 77 771 1000 1136 0 63 627 1172 0 69 688 1203 0 75 745 1232 0 80 799 1258 0 86 852 1100 1145 0 67 666 1181 0 73 731 1213 0 80 792 1242 0 85 850 1268 0 91 906 1200 1210 0 74 736 1248 0 81 808 1282 0 88 875 1312 0 94 939 1340 1 01 1000 1300 1266 0 84 836 1...

Page 30: ...96 950 1153 1 00 976 1210 1 12 1071 1257 1 17 1105 1307 1 25 1190 1500 1077 0 92 922 1113 0 99 985 1147 1 06 1054 1180 1 13 1081 1241 1 27 1215 1295 1 37 1294 1339 1 43 1350 1600 1107 1 00 998 1141 1 09 1084 1174 1 17 1134 1207 1 25 1196 1269 1 40 1339 1326 1 54 1454 1376 1 65 1558 1700 1137 1 12 1128 1171 1 20 1194 1203 1 29 1278 1235 1 37 1310 1296 1 53 1463 1354 1 70 1605 1407 1 84 1738 1800 11...

Page 31: ...ower Input to Fan ESP External Static Pressure in wg AIRFLOW Cfm EXTERNAL STATIC PRESSURE in wg 0 1 0 2 0 4 0 6 0 8 1 0 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1500 729 0 36 368 788 0 42 429 896 0 56 572 981 0 69 705 1070 0 85 869 1144 1 01 1032 1600 770 0 42 429 826 0 49 501 930 0 64 654 1015 0 78 797 1098 0 94 961 1173 1 11 1134 1700 811 0 50 511 864 0...

Page 32: ...73 1 30 1328 1245 1 49 1523 1322 1 70 1737 1380 1 89 1931 2300 1140 1 28 1288 1210 1 47 1502 1284 1 65 1686 1356 1 80 1901 1418 2 07 2115 2400 1185 1 41 1441 1249 1 61 1645 1323 1 80 1860 1389 2 03 2074 1456 2 26 2310 2500 1231 1 57 1604 1289 1 78 1819 1363 2 00 2044 1424 2 22 2269 1500 2 45 2504 AIRFLOW Cfm EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wat...

Page 33: ...29 1140 1248 1 38 1233 1358 1 69 1499 1410 1 72 1526 1488 1 93 1709 2400 1174 1 37 1258 1237 1 41 1224 1292 1 55 1378 1392 1 81 1604 1460 1 90 1683 1532 2 14 1892 2500 1201 1 48 1361 1272 1 53 1335 1335 1 71 1517 1427 1 94 1718 1518 2 16 1910 1575 2 35 2076 2600 1246 1 62 1491 1320 1 68 1482 1368 1 81 1604 1458 2 06 1823 1562 2 42 2136 1620 2 59 2283 2700 1285 1 75 1613 1361 1 82 1595 1400 1 91 16...

Page 34: ...1683 1532 2 14 1892 2500 1272 1 53 1335 1335 1 71 1517 1427 1 94 1718 1518 2 16 1910 1575 2 35 2076 2600 1320 1 68 1482 1368 1 81 1604 1458 2 06 1823 1562 2 42 2136 1620 2 59 2283 2700 1361 1 82 1595 1400 1 91 1691 1490 2 19 1936 1602 2 64 2326 1666 2 85 2504 2800 1402 1 95 1639 1439 2 08 1840 1543 2 43 2145 1642 2 86 2512 1775 3 62 3290 2900 1446 2 16 1814 1477 2 16 1989 1585 2 65 2335 1753 3 58 ...

Page 35: ...p Watts Rpm Bhp Watts 900 526 0 06 70 584 0 08 99 656 0 12 139 734 0 22 219 818 0 25 269 875 0 27 269 1000 570 0 09 109 627 0 13 149 738 0 19 189 800 0 26 259 848 0 29 288 895 0 31 308 1100 614 0 13 149 670 0 16 189 758 0 23 229 812 0 29 288 863 0 32 308 914 0 35 348 1200 658 0 16 189 710 0 23 229 780 0 28 279 840 0 32 318 889 0 36 358 938 0 40 398 1300 703 0 20 239 752 0 27 269 808 0 32 318 868 0...

Page 36: ...497 1136 0 59 577 1300 752 0 27 269 868 0 37 368 963 0 45 448 1061 0 56 557 1172 0 65 647 1400 776 0 31 308 891 0 42 418 983 0 51 507 1071 0 60 597 1208 0 70 706 1500 816 0 38 378 924 0 48 477 1014 0 58 577 1097 0 68 676 1245 0 74 776 AIRFLOW Cfm EXTERNAL STATIC PRESSURE in wg 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 900 1120 0 54 537 1155 0 59 589 ...

Page 37: ...0 33 347 761 0 39 410 817 0 45 473 914 0 59 620 955 0 66 688 996 0 72 757 1500 676 0 32 336 738 0 38 399 793 0 45 468 847 0 51 536 940 0 65 683 982 0 73 767 1024 0 81 851 1600 713 0 38 399 772 0 44 462 825 0 51 536 877 0 58 609 967 0 73 767 1009 0 81 851 1051 0 89 935 1700 750 0 45 473 806 0 51 536 857 0 59 615 908 0 66 693 997 0 81 851 1037 0 90 940 1077 1 01 1030 1800 788 0 52 546 841 0 59 620 8...

Page 38: ...128 0 91 930 1183 1 10 1052 1226 1 23 1215 1297 1 35 1406 1346 1 51 1500 1400 1139 1 01 1012 1218 1 14 1090 1286 1 34 1282 1320 1 48 1463 1370 1 65 1645 1500 1162 1 09 1114 1228 1 24 1186 1303 1 40 1339 1343 1 60 1530 1393 1 79 1778 1600 1185 1 20 1226 1250 1 35 1291 1319 1 51 1444 1382 1 68 1607 1434 1 88 1867 1700 1215 1 31 1339 1276 1 48 1415 1334 1 64 1569 1389 1 80 1722 1451 2 01 2001 1800 12...

Page 39: ...978 0 85 893 1024 0 93 977 1108 1 10 1156 1192 1 29 1355 1259 1 47 1545 1327 1 66 1744 2200 1021 0 97 1019 1064 1 05 1103 1145 1 22 1282 1225 1 43 1503 1294 1 62 1702 1359 1 80 1902 2300 1064 1 10 1156 1104 1 18 1240 1183 1 36 1429 1260 1 57 1650 1330 1 78 1870 1392 1 97 2070 2400 1107 1 24 1303 1145 1 32 1387 1222 1 45 1524 1296 1 73 1818 1365 1 94 2038 1426 2 15 2259 2500 1150 1 39 1460 1186 1 4...

Page 40: ...1 10 1156 1192 1 29 1355 1259 1 47 1545 1327 1 66 1744 1393 1 87 1965 2200 1064 1 05 1103 1145 1 22 1282 1225 1 43 1503 1294 1 62 1702 1359 1 80 1902 1423 2 02 2122 2300 1104 1 18 1240 1183 1 36 1429 1260 1 57 1650 1330 1 78 1870 1392 1 97 2070 1454 2 18 2291 2400 1145 1 32 1387 1222 1 45 1524 1296 1 73 1818 1365 1 94 2038 1426 2 15 2259 1485 2 36 2480 2500 1186 1 48 1555 1262 1 68 1765 1331 1 89 ...

Page 41: ...224 1245 1 57 1396 1305 1 63 1447 1373 1 84 1630 1440 1 95 1726 2500 1183 1 43 1275 1201 1 50 1335 1284 1 65 1465 1338 1 75 1552 1402 1 99 1761 1469 2 04 1805 2600 1210 1 58 1404 1246 1 67 1482 1312 1 76 1560 1366 1 96 1735 1435 2 10 1858 1494 2 19 1936 2700 1254 1 76 1560 1285 1 80 1595 1354 1 95 1726 1403 2 14 1892 1474 2 21 1954 1536 2 46 2171 2800 1274 1 82 1613 1304 1 85 1639 1374 2 12 1875 1...

Page 42: ...1140 1272 1 45 1292 1354 1 58 1404 1413 1 75 1552 2200 1104 1 20 1081 1159 1 23 1106 1229 1 41 1258 1306 1 53 1361 1363 1 70 1508 1434 1 81 1604 2300 1130 1 27 1140 1196 1 37 1224 1264 1 56 1387 1340 1 66 1473 1397 1 86 1648 1459 1 88 1665 2400 1174 1 37 1224 1245 1 57 1396 1305 1 63 1447 1373 1 84 1630 1440 1 95 1726 1502 2 06 1823 2500 1201 1 50 1335 1284 1 65 1465 1338 1 75 1552 1402 1 99 1761 ...

Page 43: ...e unit makes an elevated level of noise and does not provide cooling Cooling Set space thermostat to OFF position To start unit turn on main power supply Set system selector switch at COOL position and fan switch at AUTO position Adjust ther mostat to a setting below room temperature Compressor starts on closure of contactor Check unit charge Refer to Service Refrigerant Charge section page 46 Res...

Page 44: ... provide constant air circula tion When the evaporator fan selector switch is turned to the OFF position there is a 30 second delay before the fan turns off Operating Sequence COOLING UNITS WITHOUT ECONOMI ER2 When thermostat calls for cooling terminals G and Y1 are energized and the indoor evaporator fan motor IFM compressor and outdoor condenser fanmotor OFM start TheOFM runscon tinuouslywhileth...

Page 45: ... completion 5 Reinstall economizer and filters 6 Reconnect wiring 7 Replace access panels CONDENSER COIL Inspect coil monthly Clean con denser coil annually and as required by location and outdoor air conditions One Row Coils Size 004 Wash coil with commercial coil cleaner It is not necessary to remove top panel 2 Row Coils Sizes 005 007 Clean coil as follows 1 Turn off unit power and install lock...

Page 46: ... GTAC2 5 Charging Recovery Recycling and Rec lamation training manual and the following procedures Unit panels must be in place when unit is operating during charging procedure NO CHARGE Use standard evacuating techniques After evacuating system weigh in the specified amount of refriger ant Refer to Tables 1A and 1B LOW CHARGE COOLING Using Cooling Charging Charts Fig 46 49 vary refrigerant until ...

Page 47: ...P F C 125 52 115 46 105 41 95 35 85 29 75 24 65 18 55 13 45 7 30 40 50 60 70 80 90 100 20 30 40 50 60 70 80 SUCTION LINE TEMPERATURE DEG F 207 276 345 414 483 552 621 689 7 1 4 10 16 21 27 SUCTION LINE TEMPERATURE DEG C OUTDOOR TEMP F C 125 52 115 46 105 41 95 35 85 29 75 24 65 18 55 13 45 7 SUCTION LINE PRESSURE KILOPASCALS SUCTION LINE PRESSURE PSIG Fig 46 Cooling Charging Chart 48TF TM004 Fig 4...

Page 48: ... SUCTION LINE PRESSURE PSIG SUCTION LINE PRESSURE KILOPASCALS 30 40 50 60 70 80 90 100 20 30 40 50 60 70 80 SUCTION LINE TEMPERATURE DEG F 207 276 345 414 483 552 621 689 7 1 4 10 16 21 27 SUCTION LINE TEMPERATURE DEG C OUTDOOR TEMP F C 125 52 115 46 105 41 95 35 85 29 75 24 65 18 55 13 45 7 SUCTION LINE PRESSURE PSIG SUCTION LINE PRESSURE KILOPASCALS Fig 48 Cooling Charging Chart 48TF TM006 Fig 4...

Page 49: ...de flashes If more than one error code exists all applicable codes will be displayed in numerical sequence Indicates a code that is not an error The unit will continue to oper ate when this code is displayed Main Burners To access burners remove burner ac cess panel and slide out burner partition At the beginning of each heating season inspect for deterioration or blockage due to corrosion or othe...

Page 50: ...TMG005 006 74 000 BTUH INPUT 48TFM TMM004 48TFL TML005 006 60 000 BTUH INPUT MEDIUM AND HIGH HEAT 48TFE TME005 007 48TFH TMH005 006 48TFF TMF004 48TFK TMK004 115 000 BTUH INPUT 48TFF TMF005 007 48TFK TMK005 006 150 000 BTUH INPUT 48TFN TMN004 48TFM TMM005 006 90 000 BTUH INPUT 48TFN TMN005 006 120 000 BTUH INPUT ...

Page 51: ...proximately 90 The actuator should re main in position 5 Turn ISI potentiometer CW until ISI LED turns off The ISI LED should turn off when the potentiometer is ap proximately 9V The actuator should drive fully closed 6 Turn ISI and Exhaust potentiometers CW until the Ex haust LED turns on Forty five seconds after the Exhaust LED turns on the exhaust contacts will close 7 Return EconoMi er2 settin...

Page 52: ...e that the supply air temperature rise is in accordance with the range on the unit nameplate Flame sense fault LED 3 flashes The IGC sensed flame that should not be present Reset unit If problem persists replace control board 4 consecutive limit switch trips LED 4 flashes Inadequate airflow to unit Check operation of indoor evaporator fan motor and that supply air temperature rise agrees with rang...

Page 53: ...as pressure at manifold Clock gas meter for input If too low increase manifold pressure or replace with correct orifices Unit undersized for application Replace with proper unit or add additional unit Restricted airflow Clean filter replace filter or remove any restrictions Blower speed too low Use high speed tap increase fan speed or install optional blower as suitable for individual units Limit ...

Page 54: ...rates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat set too low Reset thermostat Low refrigerant charge Locate leak repair and recharge Leaking valves in compressor Replace compressor Air in system Recover refrigerant evacuate system and recharge Condenser coil dirty or restricted Clean coil or remove restriction Excessive head...

Page 55: ...SD AC AC1 PG PG1 ECONOMIZER DRY BULB SENSOR Compressor Lockout N C YELLOW GRAY BLUE TAN INDOOR FAN EXHAUST FAN UNIT CONTROL FREE COOL MAXIMUM POSITION ADJUSTMENT 2 10 VDC CO2 SENSOR HARNESS AND PLUG MINIMUM POSITION ADJUSTMENT AQ1 T1 SR TR1 24 VAC COM 4 3 5 2 8 6 7 1 10 11 9 12 ECONOMISER2 CONTROLLER ACTUATOR 820 OHM RESISTOR 620 OHM RESISTOR Fig 54 Typical Wiring Diagram and Component Arrangement...

Page 56: ...Open SW2 Switch Fully Closed SW3 Switch Min Vent Position SW4 Switch Max Vent Position TC Thermostat Cooling TDR Time Delay Relay TH Thermostat Heating TRAN Transformer Field Splice Marked Wire Terminal Marked Terminal Unmarked Terminal Block Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To indicate common potential only not to represent w...

Page 57: ...e gas passageways 46 Flue hood 4 Freeze protection thermostat 6 8 Gas connection 6 8 Gas input 6 8 Gas piping 4 Gas pressure 1 4 6 8 Heat anticipator settings 6 8 Heat exchanger 6 8 High flow valves 43 High pressure switch 6 8 Horizontal units 1 Integrated gas controller 49 Error codes 49 Leak test 43 Limit switch 49 Liquid propane 6 8 Low pressure switch 6 8 Main burners 43 Manual outdoor air dam...

Page 58: ...tinue or change at any time specifications or designs without notice and without incurring obligations PC 111 Catalog No 534 80103 Printed in U S A Form 48T 1SI Pg 58 4 02 Replaces 48TF 3SI Book 1 4 Tab 1a 6a Copyright 2002 Carrier Corporation ...

Page 59: ......

Page 60: ... AND TERMINALS FOR TIGHTNESS CHECK TO ENSURE NO WIRES ARE TOUCHING REFRIGERANT TUBING OR SHARP EDGES CHECK GAS PIPING FOR LEAKS CHECK THAT RETURN AIR FILTER IS CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS VERIFY PULLEY ALIGNMENT AND BELT TENSION ARE CORRECT III START UP ELECTRICAL SUPPLY VOLTAGE L1 L2...

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