Installation Guide

5724452-UIM-A-0619
12 Johnson Controls Ducted Systems
TABLE 11: Electrical Data for Multi-source Power Supply: 208/230-3-60
Air Handler
Models
Heater
Models
1
Heater
Amps
@240 V
Min. Circuit Ampacity
MOP.
2
208 V 230 V 208 V 230 V
Circuit Circuit
1st
2
2nd
1st
2
2nd
1st
2
2nd
1st
2
2nd
ME12B 6HK46502025 46.2 29.8 25.0 32.4 27.6 30 25 35 30
ME12C 6HK46502025 46.2 29.8 25.0 32.4 27.6 30 25 35 30
ME16C 6HK46502025 46.2 31.8 25.0 34.4 27.6 35 25 35 30
ME20D
6HK46502025 46.2 31.8 25.0 34.4 27.6 35 25 35 30
6HK46502525 57.7 38.0 31.3 41.3 34.6 40 35 45 35
1. The 20 kW and 25 kW heater models (6HK46502025 and 6HK46502525) come with circuit breakers standard.
2. MOP = Maximum Overcurrent Protection device; must be HACR type circuit breaker or time delay fuse. The 1st circuit includes blower motor amps. Refer to the lat-
est edition of the National Electrical Code or in Canada the Canadian Electrical Code and local codes to determine correct wire sizing.
TABLE 12: Airflow Data (CFM)
1
Models
CM Models
Blower
Motor Speed
External Static Pressure (in. wc.)
0.10 0.20 0.30 0.40 0.50 0.60 0.70
ME08B
CM18B
High (5) 939 893 871 837 804
767 714
Medium High (4) 833 803 765 737 697 639 587
Medium (3) 638 605 576 494 454 380 278
Medium Low (2) 538 489 456 374 283 211 157
Low (1) 478 446 367 272 211 150 23
CM24B
High (5) 923 892 862 833 797 743 688
Medium High (4) 846 816 786 750 710 638 599
Medium (3) 631 605 575 512 442 370 282
Medium Low (2) 570 530 460 402 328 232 186
Low (1) 477 448 372 292 203 157 24
CM30B
High (5) 937 905 877 841 798 748 704
Medium High (4) 846 808 778 733 667 636 572
Medium (3) 638 609 556 495 463 399 336
Medium Low (2) 560 484 469 408 321 265 201
Low (1) 481 448 390 328 252 166 92
ME12B
CM18B
High (5) 1355 1334 1302 1270 1231 1201 1170
Medium High (4) 1273 1244 1213 1177 1142 1109 1073
Medium (3) 1074 1041 1009 974 936 894 809
Medium Low (2) 862 826 798 766 688 607 587
Low (1) 659 616 560 512 457 387 275
CM24B
High (5) 1359 1331 1301 1269 1234 1202 1171
Medium High (4) 1272 1245 1209 1174 1143 1106 1073
Medium (3) 1072 1040 1007 973 937 874 778
Medium Low (2) 857 821 794 756 676 613 567
Low (1) 654 606 557 504 443 379 271
CM30B
High (5) 1354 1325 1294 1263 1230 1198 1168
Medium High (4) 1268 1235 1203 1171 1139 1107 1075
Medium (3) 1069 1038 1003 974 935 876 781
Medium Low (2) 859 818 794 756 681 620 563
Low (1) 654 608 552 503 434 364 289
CM36B
High (5) 1348 1317 1285 1254 1222 1189 1157
Medium High (4) 1258 1225 1192 1160 1126 1093 1063
Medium (3) 1062 1029 993 964 929 879 778
Medium Low (2) 860 822 791 761 682 616 568
Low (1) 642 599 554 502 431 367 294
ME12C CM61C
High (5) 1360 1334 1291 1253 1207 1172 1076
Medium High (4) 1274 1242 1202 1157 1109 1040 1000
Medium (3) 1060 1022 968 923 854 766 694
Medium Low (2) 910 863 806 722 660 567 524
Low (1) 655 585 511 436 385 323 267
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