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page 1 ?2009 allied air enterprises inc., a lennox international inc. comp any phone: (803) 738?4000 service literatur e ta a blower coil taa?072?090?120?150?180?240 (02?09) t a a series units t aa model blower?coil unit s are designed for up flow or horizont al air and indoor applications only . t aa blower unit s are available in six models; 072, 090, 120, 150, 180 and 240. the unit s match up with tsa condensing unit s and t p a heat pump unit s charged with hfc?410a refriger- ant. information and specifications cont ained in this manual a re subject to change. procedures outlined in this manual are presented as a recommendation only and do not su- persede or replace local or st ate codes. warning improper inst allation, adjustment, alteration, service or maintenance can cause personal injury , loss of life, or damage to property . inst allation and service must be performed by a licensed professional inst aller (or equivalent) or a service agency . warning electric shock hazard. can cause injury or death. before attempting to perform any service or mainte- nance, turn the electrical power to unit off at disconnect switch(es). unit may have multiple power sup- plies. t able of contents s pecifications page 2 . . . . . . . . . . . . . . . . . . . . . . . options / accessories page 3 . . . . . . . . . . . . . . . . blower dat a p age 4 . . . . . . . . . . . . . . . . . . . . . . . . . electric heat dat a page 12 . . . . . . . . . . . . . . . . . . . i unit component s page 18 . . . . . . . . . . . . . . . . . . . ii refrigeration system page 18 . . . . . . . . . . . . . . . iii blower s peed and belt adjustment page 19 . . iv electric heat page 20 . . . . . . . . . . . . . . . . . . . . . . v diagrams page 21 . . . . . . . . . . . . . . . . . . . . . . . . . http://
page 2 specifications general dat a model no. taa072s4s taa090s4d nominal tonnage 6 7.5 connections liquid line o.d. ? in. (sweat) (1) 5/8 (2) 5/8 suction/vapor line o.d. ? in. (sweat) (1) 1?1/8 (2) 7/8 condensate drain ? in. (fpt) 1 (npt) 1 (npt) refrigerant not furnished r?410a r?410a evaporator coil net face area ? sq. ft. 8.2 8.2 coil (face) split ? 1st stage / 2nd stage (%) ? ? ? 50 / 50 tube diameter ? in. 3/8 3/8 number of rows 3 4 fins per inch 14 14 blower and drive see blower drive specifications table on page 10 wheel nominal diameter & width ? in. (1) 15 x 15 (1) 15 x 15 filter number and size ? in. (3) 16 x 25 x 2 (3) 16 x 25 x 2 specifica tions general dat a model no. taa120s4d taa150s4d TAA180S4D taa240s4d nominal tonnage 10 12.5 15 20 connections liquid line o.d. ? in. (sweat) (2) 5/8 (2) 5/8 (2) 5/8 (2) 5/8 suction/vapor line o.d. ? in. (sweat) (2) 7/8 (2) 7/8 (2) 1?1/8 (2) 1?1/8 condensate drain ? in. (fpt) 1 (npt) 1 (npt) 1 (npt) 1 (npt) refrigerant not furnished r?410a r?410a r?410a r?410a evaporator coil net face area ? sq. ft. 11.3 11.3 16.9 16.9 coil (face) split ? 1st stage / 2nd stage (%) 50 / 50 50 / 50 50 / 50 50 / 50 tube diameter ? in. 3/8 3/8 3/8 3/8 number of rows 4 4 3 4 fins per inch 14 14 14 14 blower and drive see blower drive specifications table on page 10 wheel nominal diameter & width ? in. (1) 15 x 15 (1) 15 x 15 (2) 15 x 15 (2) 15 x 15 filter number and size ? in. (4) 16 x 25 x 2 (4) 16 x 25 x 2 (6) 16 x 25 x 2 (6) 16 x 25 x 2 options / accessories item catalog no. 072 090 120 150 180 240 blower blower drives see blower drive specifications table on page 10 cabinet corrosion protection factory float switch t2snsr71ln1? 47w40 x x x x x x return air grille t2gard30l?1 47w49 x x t2gard30m?1 47w50 x x t2gard30n?1 47w51 x x controls l connection ? network see separate bulletin x x x x x x note ? the cat alog and model numbers that appear here are for ordering field inst alled accessories only . ? factory installed with extended lead time . x ? field installed.
page 3 options / accessories i t e m catalog no. 072 090 120 150 180 240 electric heat 10 kw 208/240v?3ph ? t3eh0010lm1y 46w50 x x x x 460v?3ph ? t3eh0010lm1g 46w55 x x x x 575v?3ph ? t3eh0010lm1j 46w60 x x x x 15 kw 208/240v? 3ph ? t3eh0015lm1y 46w51 x x x x 460v?3ph ? t3eh0015lm1g 46w56 x x x x 575v?3ph ? t3eh0015lm1j 46w61 x x x x 25 kw 208/240v?3ph ? t3eh0025lm1y 46w52 x x x x 460v?3ph ? t3eh0025lm1g 46w57 x x x x 575v?3ph ? t3eh0025lm1j 46w62 x x x x 35 kw 208/240v?3ph ? t3eh0035lm1y 46w53 x x x 460v?3ph ? t3eh0035lm1g 46w58 x x x 575v?3ph ? t3eh0035lm1j 46w63 x x x 20 kw 208/240v?3ph ? t3eh0020n?1y 46w65 x x 460v?3ph ? t3eh0020n?1g 46w69 x x 575v?3ph ? t3eh0020n?1j 46w73 x x 30 kw 208/240v?3ph ? t3eh0030n?1y 46w66 x x 460v?3ph ? t3eh0030n?1g 46w70 x x 575v?3ph ? t3eh0030n?1j 46w74 x x 40 kw 208/240v?3ph ? t3eh0040n?1y 49w39 x x 460v?3ph ? t3eh0040n?1g 49w40 x x 575v?3ph ? t3eh0040n?1j 49w41 x x 50 kw 208/240v?3ph ? t3eh0050n?1y 46w67 x x 460v?3ph ? t3eh0050n?1g 46w71 x x 575v?3ph ? t3eh0050n?1j 46w75 x x economizer t2econ31l?1? 44w94 x x t2econ31m?1? 44w95 x x t2econ31n?1? 44w96 x x economizer controls differential enthalpy control 17w71 x x x x x x indoor air quality air filters 1 healthy climate ? high ef fic i enc y air filters (16 x 25 x 5) merv 10 ? hcf16?10 x6670 x x x x x x mer v 16 ? hcf16?16 x6672 x x x x x x 5 inch filter mounting kits t2fltr70l?1? 47w71 x x t2fl tr70m?1? 47w72 x x t2fl tr70n?1? 47w73 x x healthy climate ? uvc light kit (208/230v?1ph) 208/230v ? t2uvcl10lm1 46w43 x x x x 208/230v ? t2uvcl10n?1 46w44 x x 2 460v /230v s tep?down t r ans former 96m07 x x x x x x 2 575v/230v step?down transformer 96m08 x x x x x x refrigerant system freezest at t2snsr70n1? 47w41 x x x x x x heat pump check v alve kit t2cvl v10n?1? 47w48 x t2cvlv11n?1? 50w73 x note ? the cat alog and model numbers that appear here are for ordering field inst alled accessories only . x ? field inst alled. 1 order 5 in. filter mounting kit and required number of mer v 10 or mer v 16 filters: ? (3) 072?090, (4) 120?150, (6) 180?240. 2 step?down transformer (460v or 575v to 208/230v?1ph) or separate power supply is required.
page 4 blower da t a t aa072 blower performance all dat a is measured external to the unit with dry coil and st andard 2 in. air filters in place. for all units add: 1 ? w et indoor coil air resist ance of selected unit. 2 ? any field inst alled accessories air resist ance (electric heat, economizer , etc.) see p age page 1 1 . then determine from t able the blower motor hp and drive rpm required. see page 10 for blower drive specifications. air vol- ume cfm static pressure external to unit ? inches water gauge 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 1900 428 0.57 479 0.66 531 0.74 581 0.81 629 0.88 675 0.94 718 1.01 758 1.07 2000 434 0.59 486 0.69 538 0.77 589 0.84 637 0.91 682 0.98 725 1.05 765 1.11 2100 441 0.62 493 0.72 545 0.8 596 0.88 644 0.95 689 1.02 732 1.09 771 1.15 2200 448 0.65 501 0.75 553 0.83 604 0.91 652 0.98 696 1.06 738 1.13 778 1.2 2300 456 0.68 508 0.78 561 0.86 612 0.94 659 1.02 704 1.1 746 1.17 785 1.24 2400 463 0.71 516 0.81 569 0.9 620 0.98 667 1.06 711 1.14 753 1.22 792 1.29 2500 470 0.74 524 0.84 578 0.94 629 1.02 675 1.1 719 1.19 760 1.27 798 1.34 2600 478 0.77 533 0.88 587 0.98 637 1.06 683 1.15 726 1.24 767 1.32 805 1.39 2700 486 0.81 542 0.92 596 1.02 646 1.11 692 1.2 734 1.29 775 1.37 812 1.45 2800 495 0.85 552 0.96 606 1.07 655 1.16 700 1.25 742 1.34 782 1.42 819 1.5 2900 504 0.89 561 1.01 616 1.11 665 1.2 708 1.3 750 1.39 789 1.48 826 1.56 3000 514 0.93 572 1.05 626 1.16 674 1.26 717 1.35 758 1.45 797 1.54 833 1.62 air v o lume cfm static pressure external to unit ? inches water gauge 0.9 1 1.1 1.2 1.3 1.4 1.5 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 1900 796 1.13 830 1.19 862 1.25 893 1.32 922 1.39 950 1.46 978 1.54 2000 802 1.17 836 1.23 868 1.3 898 1.37 928 1.44 956 1.52 983 1.6 2100 808 1.22 842 1.28 874 1.35 904 1.42 933 1.5 961 1.58 988 1.66 2200 814 1.26 848 1.33 879 1.4 909 1.48 938 1.56 966 1.64 993 1.73 2300 820 1.31 854 1.38 885 1.46 915 1.53 943 1.62 971 1.7 998 1.79 2400 827 1.36 860 1.43 891 1.51 920 1.59 949 1.68 976 1.77 1003 1.86 2500 833 1.41 866 1.49 897 1.57 926 1.66 954 1.75 981 1.84 1008 1.93 2600 840 1.47 872 1.55 902 1.63 932 1.72 960 1.81 987 1.91 1013 2.01 2700 846 1.53 878 1.61 908 1.7 937 1.79 965 1.88 992 1.98 1018 2.08 2800 853 1.58 884 1.67 914 1.76 943 1.86 970 1.96 997 2.06 1023 2.16 2900 859 1.65 890 1.74 920 1.83 948 1.93 975 2.03 1002 2.14 1028 2.24 3000 866 1.71 896 1.8 926 1.9 954 2 981 2.11 1007 2.22 1032 2.33
page 5 t aa090 blower performance all dat a is measured external to the unit with dry coil and st andard 2 in. air filters in place. for all units add: 1 ? w et indoor coil air resist ance of selected unit. 2 ? any field inst alled accessories air resist ance (electric heat, economizer , etc.) see p age page 1 1 . then determine from t able the blower motor hp and drive rpm required. see page 10 for blower drive specifications. air vo l - ume cfm static pressure external to unit ? inches water gauge 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 2400 508 0.79 565 0.89 619 0.98 667 1.06 710 1.14 750 1.23 787 1.3 822 1.38 2500 519 0.83 577 0.94 630 1.02 677 1.1 720 1.19 759 1.28 796 1.36 830 1.43 2600 531 0.87 588 0.98 641 1.07 688 1.16 729 1.25 769 1.34 805 1.42 839 1.49 2700 543 0.92 600 1.03 653 1.12 698 1.21 739 1.31 778 1.4 814 1.48 848 1.55 2800 555 0.97 613 1.08 664 1.17 709 1.27 749 1.37 788 1.46 824 1.54 857 1.62 2900 568 1.02 625 1.13 676 1.22 719 1.32 759 1.43 797 1.52 833 1.6 866 1.68 3000 581 1.07 638 1.18 687 1.28 730 1.39 769 1.49 807 1.58 842 1.67 875 1.75 3100 595 1.12 651 1.24 699 1.34 740 1.45 779 1.56 817 1.65 852 1.73 883 1.82 3200 609 1.18 664 1.3 710 1.41 751 1.52 789 1.63 827 1.72 861 1.8 892 1.89 3300 624 1.24 677 1.36 722 1.48 761 1.59 799 1.7 836 1.79 870 1.88 901 1.97 3400 639 1.3 690 1.43 733 1.55 772 1.67 810 1.77 846 1.86 879 1.95 909 2.05 3500 653 1.37 703 1.5 745 1.62 782 1.75 820 1.85 856 1.94 888 2.03 917 2.14 3600 668 1.44 715 1.57 756 1.7 793 1.83 830 1.93 865 2.02 897 2.12 925 2.24 air volume cfm static pressure external to unit ? inches water gauge 0.9 1 1.1 1.2 1.3 1.4 1.5 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 2400 855 1.44 888 1.51 920 1.59 950 1.67 979 1.77 1006 1.86 1033 1.96 2500 863 1.5 896 1.57 928 1.65 958 1.74 986 1.84 1013 1.94 1039 2.04 2600 872 1.56 904 1.64 936 1.72 965 1.82 993 1.92 1019 2.02 1045 2.12 2700 880 1.62 913 1.7 943 1.79 972 1.89 1000 2 1026 2.1 1052 2.2 2800 889 1.69 921 1.77 951 1.87 979 1.97 1006 2.08 1033 2.18 1058 2.29 2900 898 1.76 929 1.85 959 1.95 987 2.05 1013 2.16 1039 2.26 1064 2.37 3000 906 1.83 937 1.93 966 2.03 994 2.13 1020 2.24 1046 2.35 1070 2.46 3100 914 1.91 944 2.01 973 2.11 1001 2.22 1027 2.33 1052 2.44 1077 2.55 3200 922 1.99 952 2.09 980 2.2 1008 2.3 1033 2.41 1058 2.53 1083 2.64 3300 930 2.07 959 2.18 987 2.29 1014 2.39 1040 2.5 1065 2.62 1089 2.73 3400 938 2.16 966 2.27 994 2.38 1021 2.49 1046 2.6 1071 2.71 1095 2.83 3500 945 2.26 973 2.37 1001 2.48 1028 2.58 1053 2.69 1077 2.81 1101 2.93 3600 953 2.35 980 2.47 1008 2.58 1034 2.68 1059 2.79 1084 2.91 1107 3.03
page 6 t aa120 blower performance all dat a is measured external to the unit with dry coil and st andard 2 in. air filters in place. for all units add: 1 ? w et indoor coil air resist ance of selected unit. 2 ? any field inst alled accessories air resist ance (electric heat, economizer , etc.) see p age page 1 1 . then determine from t able the blower motor hp and drive rpm required. see page 10 for blower drive specifications. air v o lume cfm static pressure external to unit ? inches water gauge 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 3000 484 0.51 516 0.6 552 0.7 591 0.82 635 0.95 677 1.07 699 1.1 736 1.18 3200 499 0.62 531 0.7 566 0.8 606 0.92 651 1.06 684 1.15 707 1.18 746 1.28 3400 514 0.73 546 0.81 582 0.91 622 1.03 667 1.17 690 1.22 717 1.29 758 1.4 3600 529 0.84 562 0.93 598 1.03 639 1.15 679 1.28 697 1.31 730 1.4 772 1.52 3800 545 0.96 579 1.05 616 1.15 658 1.28 686 1.37 706 1.41 745 1.53 786 1.65 4000 562 1.09 596 1.18 634 1.29 674 1.41 693 1.46 720 1.54 761 1.67 802 1.79 4200 580 1.23 615 1.31 654 1.42 684 1.52 702 1.57 737 1.69 778 1.82 819 1.94 4400 600 1.37 635 1.45 672 1.56 691 1.62 717 1.72 756 1.86 796 1.98 836 2.09 4600 619 1.51 655 1.59 683 1.68 702 1.76 736 1.89 775 2.02 814 2.13 853 2.24 4800 639 1.65 673 1.73 692 1.81 719 1.93 757 2.08 795 2.19 832 2.3 871 2.4 5000 659 1.78 685 1.87 706 1.97 740 2.12 778 2.26 814 2.37 851 2.46 889 2.56 air v o lume cfm static pressure external to unit ? inches water gauge 0.9 1 1.1 1.2 1.3 1.4 1.5 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 3000 779 1.29 826 1.42 873 1.56 919 1.7 964 1.84 1009 1.98 1054 2.11 3200 790 1.4 836 1.53 882 1.66 929 1.8 974 1.94 1019 2.07 1063 2.21 3400 802 1.51 847 1.64 893 1.77 938 1.91 983 2.04 1028 2.17 1072 2.31 3600 815 1.64 859 1.76 904 1.89 949 2.03 993 2.16 1037 2.29 1080 2.42 3800 829 1.77 873 1.9 917 2.03 961 2.16 1005 2.29 1048 2.42 1090 2.55 4000 845 1.91 888 2.04 932 2.17 975 2.31 1018 2.43 1060 2.56 1102 2.69 4200 861 2.06 904 2.19 948 2.32 990 2.46 1033 2.59 1074 2.71 1116 2.84 4400 878 2.21 921 2.34 963 2.47 1006 2.6 1048 2.73 1089 2.86 1130 2.98 4600 894 2.36 936 2.49 979 2.61 1021 2.74 1063 2.87 1104 3 1145 3.12 4800 911 2.51 953 2.63 995 2.76 1036 2.88 1078 3.01 1119 3.13 1161 3.26 5000 928 2.67 969 2.78 1011 2.9 1052 3.03 1094 3.15 1135 3.27 1176 3.4
page 7 t aa150 blower performance all dat a is measured external to the unit with dry coil and st andard 2 in. air filters in place. for all units add: 1 ? w et indoor coil air resist ance of selected unit. 2 ? any field inst alled accessories air resist ance (electric heat, economizer , etc.) see p age page 1 1 . then determine from t able the blower motor hp and drive rpm required. see p age page 10 for blower drive specifications. air v o lume cfm static pressure external to unit ? inches water gauge 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 4000 627 1.26 669 1.39 690 1.45 714 1.52 754 1.65 795 1.76 835 1.87 877 1.98 4200 653 1.42 684 1.52 701 1.57 736 1.69 777 1.82 816 1.92 856 2.02 897 2.13 4400 676 1.57 694 1.63 721 1.73 761 1.87 800 1.99 838 2.08 877 2.18 917 2.28 4600 688 1.7 710 1.79 747 1.93 787 2.06 823 2.16 860 2.24 898 2.33 938 2.43 4800 702 1.85 735 1.99 774 2.14 812 2.25 846 2.32 882 2.4 920 2.49 959 2.58 5000 725 2.06 763 2.21 801 2.34 837 2.44 869 2.49 903 2.55 941 2.64 979 2.73 5200 754 2.3 791 2.43 828 2.55 862 2.63 891 2.66 925 2.71 962 2.79 1000 2.88 5400 783 2.53 819 2.65 855 2.75 887 2.82 913 2.82 946 2.86 983 2.95 1021 3.03 5600 810 2.74 845 2.85 881 2.95 912 3.01 935 2.98 967 3.01 1004 3.1 1041 3.19 5800 835 2.95 871 3.05 906 3.15 936 3.19 957 3.14 987 3.16 1024 3.25 1062 3.34 6000 860 3.14 896 3.25 931 3.35 960 3.37 978 3.3 1008 3.31 1045 3.4 1083 3.48 air v o lume cfm static pressure external to unit ? inches water gauge 0.9 1 1.1 1.2 1.3 1.4 1.5 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 4000 920 2.1 963 2.22 1006 2.34 1048 2.46 1091 2.58 1133 2.69 1174 2.81 4200 939 2.24 982 2.36 1024 2.48 1067 2.59 1109 2.71 1151 2.83 1193 2.95 4400 959 2.39 1001 2.5 1043 2.61 1085 2.73 1127 2.85 1169 2.96 1211 3.08 4600 979 2.53 1020 2.64 1062 2.76 1104 2.87 1146 2.99 1188 3.1 1230 3.22 4800 999 2.68 1040 2.79 1082 2.9 1123 3.01 1165 3.12 1207 3.24 1248 3.35 5000 1019 2.83 1060 2.93 1101 3.04 1142 3.15 1184 3.26 1226 3.38 1267 3.49 5200 1040 2.98 1080 3.08 1121 3.19 1162 3.29 1203 3.41 1245 3.52 1286 3.63 5400 1060 3.13 1100 3.23 1140 3.33 1181 3.44 1222 3.55 1264 3.66 1305 3.77 5600 1080 3.28 1120 3.37 1160 3.48 1201 3.58 1242 3.69 1283 3.8 1324 3.91 5800 1101 3.43 1140 3.52 1180 3.62 1220 3.72 1261 3.83 1302 3.94 1343 4.05 6000 1121 3.57 1160 3.67 1200 3.77 1240 3.87 1280 3.97 1321 4.08 1362 4.19
page 8 t aa180 blower performance all dat a is measured external to the unit with dry coil and st andard 2 in. air filters in place. for all units add: 1 ? w et indoor coil air resist ance of selected unit. 2 ? any field inst alled accessories air resist ance (electric heat, economizer , etc.) see p age page 12. then determine from t able the blower motor hp and drive rpm required. see p age page 10 for blower drive specifications. air vo l - ume cfm static pressure external to unit ? inches water gauge 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 4800 440 0.78 486 1.16 534 1.46 582 1.7 628 1.9 670 2.07 709 2.18 744 2.24 5000 446 0.88 492 1.25 540 1.54 588 1.77 634 1.97 676 2.14 714 2.26 748 2.34 5200 452 0.98 499 1.34 547 1.62 595 1.84 640 2.04 682 2.22 719 2.34 753 2.43 5400 458 1.08 505 1.43 554 1.7 602 1.92 647 2.12 688 2.3 724 2.44 757 2.54 5600 465 1.18 512 1.52 561 1.77 609 1.99 653 2.2 694 2.39 729 2.53 762 2.65 5800 471 1.28 519 1.61 568 1.85 616 2.07 660 2.28 700 2.48 734 2.64 766 2.77 6000 478 1.38 526 1.7 575 1.93 623 2.15 667 2.37 706 2.58 740 2.76 771 2.91 6200 485 1.48 534 1.79 583 2.01 630 2.23 674 2.46 712 2.69 745 2.88 776 3.05 6400 493 1.59 542 1.88 591 2.1 638 2.32 681 2.56 718 2.81 750 3.01 780 3.2 6600 500 1.69 550 1.96 599 2.18 646 2.41 688 2.67 724 2.93 755 3.16 785 3.36 6800 508 1.79 558 2.05 607 2.27 654 2.51 695 2.78 730 3.07 761 3.32 789 3.54 7000 516 1.89 567 2.15 616 2.36 662 2.61 702 2.91 736 3.22 766 3.49 794 3.73 7200 525 1.99 575 2.24 625 2.46 670 2.73 709 3.05 742 3.38 771 3.68 798 3.94 air v o lume cfm static pressure external to unit ? inches water gauge 0.9 1 1.1 1.2 1.3 1.4 1.5 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 4800 778 2.33 811 2.47 844 2.69 876 2.94 907 3.18 936 3.38 966 3.58 5000 782 2.43 814 2.59 847 2.81 879 3.07 909 3.32 939 3.53 968 3.75 5200 786 2.54 818 2.71 850 2.95 881 3.22 912 3.48 941 3.7 970 3.93 5400 790 2.66 821 2.85 853 3.09 884 3.37 914 3.64 943 3.88 972 4.12 5600 794 2.79 825 2.99 856 3.24 887 3.54 917 3.82 946 4.07 975 4.33 5800 798 2.93 828 3.14 859 3.41 890 3.71 919 4.01 948 4.28 977 4.56 6000 801 3.07 832 3.3 862 3.58 892 3.9 922 4.22 951 4.51 980 4.81 6200 805 3.23 835 3.47 865 3.77 895 4.11 924 4.44 953 4.75 983 5.07 6400 809 3.4 839 3.65 868 3.97 898 4.32 927 4.68 956 5.01 986 5.35 6600 813 3.58 842 3.85 872 4.18 901 4.56 930 4.93 959 5.28 989 5.65 6800 817 3.77 846 4.06 875 4.41 904 4.8 933 5.2 962 5.58 993 5.97 7000 821 3.98 849 4.29 878 4.66 907 5.07 936 5.49 965 5.89 996 6.31 7200 825 4.21 853 4.53 881 4.92 910 5.35 939 5.79 969 6.22 1000 6.67
page 9 t aa240 blower performance all dat a is measured external to the unit with dry coil and st andard 2 in. air filters in place. for all units add: 1 ? w et indoor coil air resist ance of selected unit. 2 ? any field inst alled accessories air resist ance (electric heat, economizer , etc.) see p age page 12. then determine from t able the blower motor hp and drive rpm required. see p age page 10 for blower drive specifications. air vo l - ume cfm static pressure external to unit ? inches water gauge 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 6400 535 1.84 583 2.06 630 2.28 674 2.51 713 2.77 746 3.03 776 3.25 805 3.44 6600 545 1.94 593 2.16 640 2.38 683 2.63 720 2.91 753 3.19 782 3.43 810 3.64 6800 555 2.05 604 2.27 650 2.5 692 2.76 728 3.06 759 3.36 787 3.62 815 3.85 7000 566 2.16 614 2.38 660 2.62 701 2.9 736 3.23 766 3.55 793 3.83 820 4.08 7200 577 2.27 625 2.49 671 2.75 710 3.05 743 3.4 772 3.75 799 4.05 825 4.32 7400 588 2.38 637 2.61 681 2.88 719 3.21 751 3.59 778 3.96 804 4.29 829 4.58 7600 600 2.49 648 2.74 691 3.03 727 3.39 758 3.79 784 4.18 809 4.54 834 4.85 7800 613 2.61 660 2.88 701 3.19 735 3.57 764 4 790 4.42 814 4.8 839 5.14 8000 626 2.73 671 3.02 711 3.36 743 3.77 771 4.22 796 4.67 819 5.08 844 5.45 8200 638 2.86 682 3.18 720 3.55 751 3.98 777 4.46 801 4.93 824 5.37 849 5.77 8400 651 3 694 3.35 729 3.75 758 4.21 784 4.7 807 5.21 829 5.68 853 6.12 8600 664 3.15 704 3.53 738 3.96 765 4.44 789 4.97 812 5.5 834 6 858 6.48 8800 676 3.32 714 3.73 746 4.19 772 4.7 795 5.25 817 5.81 839 6.35 863 6.86 9000 688 3.5 724 3.94 754 4.43 778 4.97 800 5.54 822 6.13 844 6.71 868 7.27 9200 700 3.71 733 4.17 761 4.69 784 5.26 806 5.86 826 6.48 848 7.09 873 7.69 9400 711 3.93 742 4.43 768 4.97 790 5.57 811 6.19 831 6.85 853 7.5 878 8.15 9600 721 4.17 750 4.71 775 5.28 796 5.9 816 6.56 836 7.25 858 7.94 884 8.63 air v o lume cfm static pressure external to unit ? inches water gauge 0.9 1 1.1 1.2 1.3 1.4 1.5 rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp 6400 833 3.66 863 3.92 892 4.24 922 4.59 952 4.93 981 5.28 1012 5.65 6600 838 3.87 867 4.15 896 4.49 926 4.86 956 5.22 986 5.6 1017 5.99 6800 842 4.09 871 4.39 900 4.75 930 5.14 960 5.54 991 5.94 1022 6.36 7000 847 4.34 875 4.65 905 5.03 934 5.45 964 5.87 996 6.3 1028 6.75 7200 851 4.6 880 4.94 909 5.34 939 5.78 969 6.22 1001 6.68 1034 7.16 7400 856 4.88 884 5.24 913 5.66 943 6.13 974 6.6 1006 7.09 1040 7.6 7600 861 5.18 888 5.56 918 6.01 948 6.5 980 7.01 1012 7.53 1047 8.07 7800 865 5.49 893 5.9 923 6.38 953 6.9 985 7.44 1019 7.99 1054 8.56 8000 870 5.83 898 6.27 928 6.77 959 7.32 991 7.89 1026 8.48 1062 9.08 8200 875 6.19 903 6.65 933 7.19 964 7.77 998 8.37 1033 9 1070 9.63 8400 879 6.56 908 7.07 938 7.63 970 8.25 1004 8.89 1040 9.54 1078 10.2 8600 884 6.96 913 7.5 944 8.1 977 8.75 1011 9.43 1048 10.12 1087 10.81 8800 890 7.39 919 7.96 950 8.6 983 9.29 1019 10 1057 10.73 1096 11.44 9000 895 7.83 924 8.45 956 9.13 991 9.85 1027 10.6 1066 11.36 1105 12.11 9200 900 8.31 931 8.97 963 9.69 998 10.45 1036 11.24 1075 12.03 1115 12.8 9400 906 8.81 937 9.51 970 10.28 1006 11.08 1045 11.91 1085 12.73 1125 13.52 9600 912 9.34 944 10.09 978 10.9 1015 11.75 1054 12.61 1095 13.46 1136 14.28
page 10 blower drive specifica tions s t atic rpm range motor hp 072 090 120 150 180 240 nominal maximum low 552 ? 782 1.5 1.72 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? standard 690 ? 936 1.5 1.72 s ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? high 906 ? 1121 2 2.3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? low 644 ? 874 2 2.3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? standard 782 ? 1012 2 2.3 ? ? ? s ? ? ? ? ? ? ? ? ? ? ? ? high 966 ? 1196 3 3.45 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? low 690 ? 893 2 2.3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? standard 852 ? 1055 2 2.3 ? ? ? ? ? ? s ? ? ? ? ? ? ? ? ? high 986 ? 1232 3 3.45 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? low 782 ? 1012 3 3.45 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? standard 920 ? 1150 3 3.45 ? ? ? ? ? ? ? ? ? s ? ? ? ? ? ? high 1134 ? 1380 5 5.75 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? low 591 ? 838 3 3.45 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? standard 782 ? 1012 5 5.75 ? ? ? ? ? ? ? ? ? ? ? ? s ? ? ? high 920 ? 1150 5 5.75 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? low 679 ? 863 5 5.75 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? standard 808 ? 1026 7.5 8.63 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? s high 1002 ? 1282 7.5 8.63 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? note ? us ing tot a l air volume and sy s t em st atic pres s u re require ment s , determine from blower performanc e t ables rpm and motor h ors epower required. maximum usable horsepower of motors are shown. in canada, nominal motor horsepower is also maximum usable motor horsepower . if motors of comp arable horsepower are used, be sure to keep within the service factor limit ations outlined on the motor nameplate. s ? factory inst alled st andard ? factory inst alled with extended lead time . blower motor electrical data model no. 072 090 120 150 180 240 1.5 hp blower motor maximum overcurrent protection / minimum circuit ampacity 208/230/?60hz?3ph 15 / 8 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 460v?60hz?3ph 15 / 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 575v?60hz?3ph 15 / 3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 2 hp blower motor maximum overcurrent protection / minimum circuit ampacity 208/230/?60hz?3ph 15 / 10 15 / 10 15 / 10 ? ? ? ? ? ? ? ? ? 460v?60hz?3ph 15 / 5 15 / 5 15 / 5 ? ? ? ? ? ? ? ? ? 575v?60hz?3ph 15 / 4 15 / 4 15 / 4 ? ? ? ? ? ? ? ? ? 3 hp blower motor maximum overcurrent protection / minimum circuit ampacity 208/230/?60hz?3ph ? ? ? 20 / 14 20 / 14 20 / 14 20 / 14 ? ? ? 460v?60hz?3ph ? ? ? 15 / 6 15 / 6 15 / 6 15 / 6 ? ? ? 575v?60hz?3ph ? ? ? 15 / 5 15 / 5 15 / 5 15 / 5 ? ? ? 5 hp blower motor maximum overcurrent protection / minimum circuit ampacity 208/230/?60hz?3ph ? ? ? ? ? ? ? ? ? 35 / 21 35 / 21 35 / 21 460v?60hz?3ph ? ? ? ? ? ? ? ? ? 15 / 10 15 / 10 15 / 10 575v?60hz?3ph ? ? ? ? ? ? ? ? ? 15 / 8 15 / 8 15 / 8 7.5 hp blower motor maximum overcurrent protection / minimum circuit ampacity 208/230/?60hz?3ph ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 50 / 31 460v?60hz?3ph ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 20 / 14 575v?60hz?3ph ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 20 / 12
page 11 t aa072?090 accessor y air resist ance air v olume (cfm) total resistance ? in. w.g. wet coil 5 inch filters economizer electric heat 072 090 merv 10 merv 15 1900 0.07 0.09 0.03 0.04 0.04 0.02 2000 0.07 0.10 0.03 0.04 0.04 0.02 2100 0.08 0.11 0.03 0.04 0.04 0.02 2200 0.08 0.11 0.03 0.05 0.05 0.02 2300 0.09 0.12 0.03 0.05 0.05 0.03 2400 0.10 0.13 0.04 0.06 0.05 0.03 2500 0.10 0.14 0.04 0.06 0.06 0.03 2600 0.11 0.15 0.04 0.06 0.06 0.03 2700 0.12 0.16 0.05 0.06 0.07 0.04 2800 0.12 0.17 0.05 0.06 0.07 0.04 2900 0.13 0.18 0.05 0.07 0.08 0.04 3000 0.14 0.19 0.05 0.07 0.08 0.05 3100 0.14 0.20 0.06 0.07 0.09 0.05 3200 0.15 0.21 0.06 0.07 0.09 0.05 3300 0.16 0.22 0.06 0.08 0.1 0.06 3400 0.17 0.23 0.06 0.08 0.1 0.06 3500 0.18 0.24 0.07 0.08 0.11 0.06 3600 0.18 0.25 0.07 0.08 0.12 0.06 t aa120?150 accessor y air resist ance air volume (cfm) total resistance ? in. w.g. wet coil 5 inch filters economizer electric heat 120 150 merv 10 merv 15 3000 0.11 0.11 0.03 0.05 0.04 0.05 3200 0.12 0.12 0.04 0.05 0.04 0.05 3400 0.14 0.14 0.04 0.06 0.05 0.06 3600 0.15 0.15 0.05 0.06 0.05 0.06 3800 0.16 0.16 0.05 0.07 0.05 0.06 4000 0.18 0.18 0.06 0.07 0.06 0.08 4200 0.19 0.19 0.06 0.07 0.06 0.08 4400 0.20 0.20 0.06 0.08 0.07 0.09 4600 0.22 0.22 0.07 0.08 0.07 0.09 4800 0.23 0.23 0.07 0.08 0.08 0.10 5000 0.25 0.25 0.07 0.08 0.08 0.10 5200 0.27 0.27 0.08 0.09 0.09 0.11 5400 0.28 0.28 0.08 0.09 0.09 0.11 5600 0.30 0.30 0.08 0.09 0.1 0.13 5800 0.32 0.32 0.09 0.1 0.1 0.13 6000 0.33 0.33 0.09 0.1 0.11 0.14
page 12 t aa180?240 accessor y air resist ance air v olume (cfm) total resistance ? in. w.g. wet coil 5 inch filters economizer electric heat 180 240 merv 10 merv 15 4500 0.08 0.11 0.03 0.05 0.05 0.06 4750 0.09 0.12 0.04 0.05 0.06 0.08 5000 0.10 0.13 0.04 0.06 0.07 0.09 5250 0.11 0.14 0.04 0.06 0.07 0.09 5500 0.11 0.15 0.05 0.06 0.08 0.11 5750 0.12 0.16 0.05 0.06 0.08 0.11 6000 0.13 0.18 0.05 0.07 0.10 0.12 6250 0.14 0.19 0.06 0.07 0.11 0.14 6500 0.15 0.20 0.06 0.07 0.11 0.14 6750 0.16 0.21 0.06 0.08 0.12 0.15 7000 0.17 0.22 0.07 0.08 0.12 0.15 7250 0.18 0.24 0.07 0.08 0.13 0.17 7500 0.19 0.25 0.07 0.08 0.13 0.17 7750 0.19 0.26 0.08 0.09 0.14 0.18 8000 0.21 0.28 0.08 0.09 0.16 0.20 8250 0.22 0.29 0.08 0.09 0.16 0.20 8500 0.23 0.31 0.09 0.1 0.17 0.21 8750 0.24 0.32 0.09 0.1 0.17 0.21 9000 0.25 0.33 0.09 0.1 0.18 0.23 9250 0.26 0.35 0.10 0.11 0.19 0.24 9500 0.27 0.36 0.10 0.11 0.20 0.26 9750 0.28 0.38 0.10 0.11 0.22 0.27 10,000 0.29 0.40 0.11 0.12 0.23 0.29 t aa072 optional electric hea t da t a electric heat size no. of steps volts input kw input 1 btuh output 2 total unit + electric heat minimum circuit ampacity total unit + electric heat maximum overcurrent protection 1.5 hp 2 hp 1.5 hp 2 hp 10 kw 1 208 7.5 25,600 34 36 35 40 1 220 8.4 28,700 38 40 40 40 230 9.2 31,400 240 10 34,100 1 440 8.4 28,700 19 20 20 20 460 9.2 31,400 480 10 34,100 1 550 8.4 28,700 15 16 15 20 575 9.2 31,400 600 10 34,100 15 kw 1 208 11.3 38400 47 49 50 50 1 220 12.6 43,000 53 55 60 60 230 13.5 47,000 240 15 51,200 1 440 12.6 43,000 27 27 30 30 460 13.5 47,,000 480 15 51,200 1 550 12.6 43,000 21 22 25 25 575 13.5 47,000 600 15 51,200 25 kw 3 2 208 18.8 64,100 73 75 80 80 3 2 220 21 71,700 83 85 90 90 230 23 78,300 240 25 85,300 1 440 21 71,700 42 42 45 45 460 23 78,300 480 25 85,300 1 550 21 71,700 34 34 35 35 575 23 78,300 600 25 85,300 1 electric heater cap acity only ? does not include additional blower motor heat cap acity . 2 refer to national or canadian electrical code manual to determine wire, fuse and disconnect size requirements. use wires suita ble for at least 167f. 3 may be used with two stage control (field provided).
page 13 taa090 optional electric heat data electric heat size no. of steps volts input kw input 1 btuh output 2 total unit + electric heat minimum circuit ampacity total unit + electric heat maximum overcurrent protection 2 hp 3 hp 2 hp 3 hp 10 kw 1 208 7.5 25,600 36 40 40 40 220 8.4 28,700 1 230 9.2 31,400 40 44 40 45 240 10 34,100 440 8.4 28,700 1 460 9.2 31,400 20 21 20 25 480 10 34,100 550 8.4 28,700 1 575 9.2 31,400 16 17 20 20 600 10 34,100 15 kw 1 208 11.3 38400 49 53 50 60 220 12.6 43,000 1 230 13.5 47,000 55 59 60 60 240 15 51,200 440 12.6 43,000 1 460 13.5 47,,000 27 29 30 30 480 15 51,200 550 12.6 43,000 1 575 13.5 47,000 22 23 25 25 600 15 51,200 25 kw 3 2 208 18.8 64,100 75 79 80 80 220 21 71,700 3 2 230 23 78,300 85 89 90 90 240 25 85,300 440 21 71,700 1 460 23 78,300 42 44 45 45 480 25 85,300 550 21 71,700 1 575 23 78,300 34 35 35 35 600 25 85,300 33.3 kw 3 2 208 25 85,300 97 100 100 100 220 28 95,500 3 2 230 30.6 104,400 110 114 110 125 240 33.3 113,700 440 28 95,500 1 460 30.6 104,400 55 57 60 60 480 33.3 113,700 550 28 95,500 1 575 30.6 104,400 44 45 45 45 600 33.3 113,700 1 electric heater cap acity only ? does not include additional blower motor heat cap acity . 2 refer to national or canadian electrical code manual to determine wire, fuse and disconnect size requirements. use wires suita ble for at least 167f. 3 may be used with two stage control (field provided).
page 14 taa120 optional electric heat data electric heat size no. of steps volts input kw input 1 btuh output 2 total unit + electric heat minimum circuit ampacity total unit + electric heat maximum overcurrent protection 2 hp 3 hp 2 hp 3 hp 10 kw 1 208 7.5 25,600 36 40 40 40 220 8.4 28,700 1 230 9.2 31,400 40 44 40 45 240 10 34,100 440 8.4 28,700 1 460 9.2 31,400 20 21 20 25 480 10 34,100 550 8.4 28,700 1 575 9.2 31,400 16 17 20 20 600 10 34,100 15 kw 1 208 11.3 38400 49 53 50 60 220 12.6 43,000 1 230 13.5 47,000 55 59 60 60 240 15 51,200 440 12.6 43,000 1 460 13.5 47,,000 27 29 30 30 480 15 51,200 550 12.6 43,000 1 575 13.5 47,000 22 23 25 25 600 15 51,200 25 kw 3 2 208 18.8 64,100 75 79 80 80 220 21 71,700 3 2 230 23 78,300 85 89 90 90 240 25 85,300 440 21 71,700 1 460 23 78,300 42 44 45 45 480 25 85,300 550 21 71,700 1 575 23 78,300 34 35 35 35 600 25 85,300 33.3 kw 3 2 208 25 85,300 97 100 100 100 220 28 95,500 3 2 230 30.6 104,400 110 114 110 125 240 33.3 113,700 440 28 95,500 1 460 30.6 104,400 55 57 60 60 480 33.3 113,700 550 28 95,500 1 575 30.6 104,400 44 45 45 45 600 33.3 113,700 1 electric heater cap acity only ? does not include additional blower motor heat cap acity . 2 refer to national or canadian electrical code manual to determine wire, fuse and disconnect size requirements. use wires suita ble for at least 167f. 3 may be used with two stage control (field provided).
page 15 taa150 optional electric heat data electric heat size no. of steps volts input kw input 1 btuh output 2 total unit + electric heat minimum circuit ampacity total unit + electric heat maximum overcurrent protection 3 hp 5 hp 3 hp 5 hp 10 kw 1 208 7.5 25,600 40 47 40 50 220 8.4 28,700 1 230 9.2 31,400 44 51 45 60 240 10 34,100 440 8.4 28,700 1 460 9.2 31,400 21 25 25 25 480 10 34,100 550 8.4 28,700 1 575 9.2 31,400 17 20 20 20 600 10 34,100 15 kw 1 208 11.3 38400 53 60 60 60 220 12.6 43,000 1 230 13.5 47,000 59 66 60 70 240 15 51,200 440 12.6 43,000 1 460 13.5 47,,000 29 32 30 35 480 15 51,200 550 12.6 43,000 1 575 13.5 47,000 23 26 25 30 600 15 51,200 25 kw 3 2 208 18.8 64,100 79 86 80 90 220 21 71,700 3 2 230 23 78,300 89 96 90 100 240 25 85,300 440 21 71,700 1 460 23 78,300 44 48 45 50 480 25 85,300 550 21 71,700 1 575 23 78,300 35 38 35 40 600 25 85,300 33.3 kw 3 2 208 25 85,300 100 108 100 110 220 28 95,500 3 2 230 30.6 104,400 114 121 125 125 240 33.3 113,700 440 28 95,500 1 460 30.6 104,400 57 60 60 60 480 33.3 113,700 550 28 95,500 1 575 30.6 104,400 45 48 45 50 600 33.3 113,700 1 electric heater cap acity only ? does not include additional blower motor heat cap acity . 2 refer to national or canadian electrical code manual to determine wire, fuse and disconnect size requirements. use wires suita ble for at least 167f. 3 may be used with two stage control (field provided).
page 16 taa180 optional electric heat data electric heat size no. of steps volts input kw input 1 btuh output 2 total unit + electric heat minimum circuit ampacity total unit + electric heat maximum overcurrent protection 3 hp 5 hp 3 hp 5 hp 20 kw 1 208 14.8 50,600 65 73 70 80 220 16.5 56,500 1 230 18.1 61,800 73 81 80 90 240 19.7 67,300 440 16.8 57,500 1 460 18.4 62,900 37 40 40 40 480 20 68,300 550 16.8 57,300 1 575 18.4 62,600 29 32 30 35 600 20 68,300 30 kw 2 208 22.5 76,900 92 99 100 100 220 25.2 86,100 2 230 27.5 94,100 104 112 110 125 240 30 102,500 440 25.2 86,100 1 460 27.5 94,100 52 55 60 60 480 30 102,500 550 25.2 86,200 1 575 27.5 94,200 41 44 45 45 600 30 102,500 40 kw 2 208 29.3 100,000 115 123 125 125 220 32.8 112,000 2 230 35.8 122,300 131 139 150 150 240 39 133,200 440 32.8 112,000 1 460 35.9 122,400 65 69 70 70 480 39 133,200 550 33.6 114,800 1 575 36.7 125,500 53 56 60 60 600 40 136,600 50 kw 2 208 36.1 123,200 114 121 125 125 220 40.3 137,700 2 230 44.1 150,600 129 137 150 150 240 48 163,900 440 42 143,400 2 460 45.9 156,700 74 81 80 90 480 50 170,800 550 42 143,500 2 575 45.9 156,800 62 69 70 70 600 50 170,800 1 electric heater cap acity only ? does not include additional blower motor heat cap acity . 2 refer to national or canadian electrical code manual to determine wire, fuse and disconnect size requirements. use wires suita ble for at least 167f. 3 may be used with two stage control (field provided).
page 17 taa240 optional electric heat data electric heat size no. of steps volts input kw input 1 btuh output 2 total unit + electric heat minimum circuit ampacity total unit + electric heat maximum overcurrent protection 5 hp 7.5 hp 5 hp 7.5 hp 20 kw 1 208 14.8 50,600 73 82 80 90 220 16.5 56,500 1 230 18.1 61,800 81 90 90 90 240 19.7 67,300 440 16.8 57,500 1 460 18.4 62,900 40 44 40 45 480 20 68,300 550 16.7 57,300 1 575 18.4 62,600 32 36 35 40 600 20 68,300 30 kw 2 208 22.5 76,900 99 109 100 110 220 25.2 86,100 2 230 27.6 94,100 112 121 125 125 240 30 102,500 440 25.2 86,100 1 460 27.6 94,100 55 59 60 60 480 30 102,500 550 25.2 86,100 1 575 27.6 94,200 44 48 45 50 600 30 102,500 40 kw 2 208 29.3 100,000 123 132 125 150 220 32.8 112,000 2 230 35.8 122,300 139 148 150 150 240 39 133,200 440 32.8 112,000 1 460 35.9 122,400 69 73 70 80 480 39 133,200 550 33.6 114,800 1 575 36.7 125,500 56 60 60 60 600 40 136,600 50 kw 2 208 36.1 123,200 121 131 125 150 220 40.3 137,700 2 230 44.1 150,600 137 146 150 150 240 48 163,900 440 42 143,400 2 460 45.9 156,700 81 91 90 100 480 50 170,800 550 42 143,500 2 575 45.9 156,800 69 79 70 80 600 50 170,800 1 electric heater cap acity only ? does not include additional blower motor heat cap acity . 2 refer to national or canadian electrical code manual to determine wire, fuse and disconnect size requirements. use wires suita ble for at least 167f. 3 may be used with two stage control (field provided).
page 18 i ? unit components a ? blower cont actor k3 k3 is a three?pol e cont actor used to control the blower . o n a call for heat (see economizer relay k43), cool or continu- ous blower k3?1 cont act s close energizing the indoor blow- er b3. see wiring diagram. b ? economizer relay k43 relay k43 is a single?pole double throw relay used to con- trol the economizer . when there is a call for cooling, k43?1 cont act s cl ose energi zi ng t he economi zer and blower con- t actor k3. see wiring diagram. c ? blower motor b3 see page 10 for blower drive specifications and blower motor electrical dat a. d ? blower motor overload relay s42 relay s42 is used for m volt age and unit s with high ef fi- ciency motors only . s42 is connected in line with the blower motor to monitor the current flow to the motor . when the relay senses an overload condition, a set of n.c. cont act s open to de?energize all 24 volt circuit s. e ? t erminal block tb1 all field wring connections are made at terminal block tb1. f ? condensate pan and over flow relay k220 & switch s149 a reversible drain p an is provided. never connect conden- sate drain to a closed system. condensate drain line must have a trap in the line at the unit exit. k220 and s149 are field inst alled and used to prevent condensate overflow . i n the event of a blocked drain plug and condensate begins rise, n.o. s149 will close energizing relay k220. n.c. k220 opens de?energizing the the t aa unit. figure 1 cont actor (k3?1) ground lug terminal strip (tb1) blower rela y (k43) three?phase thermal overload relay (s42) (m vol t age) taa control box figure 2 coil exp a nsion v a lve blower control box taa072/090/120/150 figure 3 coil expa nsion v a lve blower control box taa180/240 ii ? refrigeration system unit s are equipped with single refrigerant circuit (072) or dual refrigerant circuit (090?240). the 090?240 unit s have a dual distribution system for two st age cap acity control during cooling cycles. each circuit has it s own service valve connection and exp ansion valve.
page 19 iii ? blower speed & bel t tension air v olume adjustment fixed pulley blower bel t adjustable pulley adjustable pulley allen screw run the blower without a cooling demand. use the st atic pressure and rev/min readings to determine the units air volume (see applicable blower performance tables). measure the indoor blower motors rpm. measure the st atic pressure external to the unit. note ? the indoor coil must be dry and the air filters must be in place when the following measurement s are t aken. loosen the allen screw on the adjust able pulley . t urn the adjust able sheave clockwise to increase the air volume or counterclockwise to decrease the air volume. once the desired air volume has been achieved, tighten the allen screw . 1 2 3 4 5 6 7 figure 4 adjusting belt t ension place belt over all three pulleys. using a 15/16" wrench on the tensioner body nut, apply force until marks align as shown. while holding the tensioner in this position, tighten the mounting bolt to 23 ft?lbs using a 9/16" wrench. 1 2 3 bel t tensioner figure 5
page 20 iv ? electric heat component s see electric heat t ables (t able of content s) for electric heat matchup s. eha unit s consist s of electric heating element s exposed to the airstream. multiple?st age element s are se- quenced o n and of f by time delays in response to thermo- st at demand. 1 ? heating element s he1, he2, he3 & he4 heating element s are composed of helix wound bare nichrome exposed directly to the airstream. heating element s are energized directly by cont actors. once energized, h eat t r ansfer i s i nst ant aneous. o v ertemper - ature p r otection i s p r ovided b y p r imary a n d s e condary high t e mperature l i mit s . o v ercurrent p r otection i s p r o - vided by fuses. each st age of electric heat consist s of three element s connected in a three-phase arrange - ment. element s in 208/230v unit s are connected in a delt a " arrangement. element s in 460 and 575v unit s are c onnected i n w ye" a rrangement. e a c h s ta g e i s e n - ergized i ndependently b y a t h ree-pole d ouble-break c o n - ta ctor and is protected by safety limit s . 2 ? cont actors k15 & k16 cont actors k15 and k16 are three?pole double break re- lays with a 24 volt coil that energize their respective heating element s o n thermost at demand. k15 energizes first st age heat element s and k16 energizes second st age element s. 3 ? electric heat sequencer relays k32 relay k 3 2 i s a n . o. s equencer r e lay w i th a r e sistive e l e - ment for a coil and a bi-met al disk which actuates the c o n t a c t s . t h e r e lays a r e l o cated o n t h e e l ectric h eat v e stibule p anel a n d a r e e nergized b y a 2 4 v h eating d e mand ( w 1, w 2 ). when energized, the internal resist ance heat s the bi-met al disk c ausing t h e c ont act s t o c l ose. w hen t h e r e lay i s d e -ener - g i z e d , the disk cools and the cont act s open. the relay energizes dif f erent st ages of heat. 4 ? relays k9 and k19 relays k 9 and k19 are used to electrically isolate the t aa 24 volt s com ponent s from the t3eha 24 volt component s. t h e coil on the relays are connected to first st age and sec- ond st age heat. on a first st age heat demand k9 is ener- gized. k9?1 closes energizing first st age heat cont actor k15. o n a second st age heat call k19 is energized. when k19?1 closes cont actor k16 is energized which energizes relay k32. 5 ? fuse f3 heating element s in a l l t3eha unit s are protected by fuse f3. t he f use i s c onnected i n s eries w i th e ach l eg o f e l ectric heat. 6 ? fuse f4 f4 s e rves t h e s a me p u rpose a s f 3 b u t i s i n l i ne w i th l i ne v o lt - age and protect s the indoor blower b3. 7 ? t ransformer t2 t2 i s l i ne v o lt age t o 2 4 v a c w h ich p r ovides 2 4 v a c t o p o wer to all t3eha cont actor coils, relays and timers. 8 ? high t e mperature limit s15 (primary) s15 is the primary high temperature limit. it is located in the electric heat unit immediately downstream from the heating element s. s15 is a single-pole single-throw nor - mally c l osed t hermost at w i red i n s e ries w i th t h e f i rst s tage cont actor coil. when s 1 5 o pens, i ndicating a p r oblem i n t h e s ystem, c ont ac - tor k 1 5 i s d e -energized. w hen k 1 5 i s d e -energized, f i rst s t age and a l l s ubsequent s t ages o f h eat a r e d e-energized. s i nce t he indoor blower is controlled by demand (k9 remains ener - gized), the indoor blower continues operating. 9 ? high t em p erature lim i t s20 (secondary) each heating element assembly is electrically connected to two high temperature limit s s20 (refer to wiring diagrams in back o f t h is m anual). e a ch l i mit i s c onnected i n s e ries w i th o n e leg o f t h e t h ree-phase e l ement a ssembly . t h e t h ird l e g o f e a ch assembly is not equipped with a limit. three-phase o perating characteristics allow one of the other two limit s to protect the third leg.
page 21 v ? w iring diagrams t aa072/240 ? sequence of opera tion 1 . w 1 heat demand energizes the economizer relay k43. 2. when k43?1 closes blower relay k3 is energized. 3 . k3?1 closes energizing indoor blower b3.
page 22 t3eh 072/150, 10?15 kw y v olt age ? sequence of operation heat call tsa / tp a 1. w1 (w2 in tp a) heat demand energizes the econo- mizer relay k43 and heat relay k9. k43?1 closes ener- gizing blower relay k3. 2. k3?1 closes energizing indoor blower b3. k9?1 closes energizing cont actor k15. 3 . k15?1 c l oses a n d a ssuming p r imary l i mit s 1 5 a n d s e con - dary l i mit s 2 0 a r e c l osed, h eating e l ement s h e 1 a n d h e 2 are energized.
page 23 t3eh 072/150, 25?35 kw y v olt age ? sequence of operation first s t age heat call 1. tsa ? w1 heat demand energizes the economizer relay k43 and heat relay k9. k43?1 closes energizing blower relay k3 tp a ? unit will operate in heat mode" from the indoor thermost at. 2. k3?1 closes energizing indoor blower b3. k9?1 closes energizing cont actor k15. second st age heat relay k19 is energized. (unit is ready for se - cond st age heat but onl y if there is a w2 call) 3 . k15?1 c l oses a n d a ssuming p r imary l i mit s 1 5 a n d s e con - dary l i mit s 2 0 a r e c l osed, h eating e l ement s h e 1 a n d h e 2 are energized. second s t age heat call tsa / tp a 4. tsa ? w 2 c a lls f o r s e cond s t age h eat. k 19?1 c l oses e ner - gizing one side of cont actor k16 which energizes one side of relay k32. k32?1 closes energizing k16. k16?1 closes energizing he3 and he4. tp a ? w 2 h eat d e mand e nergizes k 9 a n d k 19. k 9 ?1 a n d k19?1 closes energizing k15, k16 and k32. k15?1 and k16?1 closes energizing he3 and he4.
page 24 t3eh 072/150, 10?35 kw g , j, m v olt age ? sequence of operation heat call tsa / tp a 1. w1 (w2 in tp a) heat demand energizes the econo- mizer relay k43 and heat relay k9. k43?1 closes ener- gizing blower relay k3. 2. k3?1 closes energizing indoor blower b3. k9?1 closes energizing cont actor k15. 3 . k15?1 c l oses a n d a ssuming p r imary l i mit s 1 5 a n d s e con - dary l i mit s 2 0 a r e c l osed, h eating e l ement s h e 1 a n d h e 2 are energized.

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