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Lennox TAA Series, Unit Information

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Page 25

T3EH 072/150, 10−15 kW Y Voltage − Sequence of Operation

Heat Call TSA / TPA

 1. W1 (W2 in TPA) 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 contactor K15.

 3. K15−1 closes and assuming primary limit S15 and secon-

dary limit S20 are closed, heating elements HE1 and HE2
are energized.

Summary of Contents for TAA Series

Page 1: ...do not su persede or replace local or state codes WARNING Improper installation adjustment alteration service or maintenance can cause personal injury loss of life or damage to property Installation...

Page 2: ...2 3 16 x 25 x 2 SPECIFICATIONS General Data 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 li...

Page 3: ...GE PHASE 2HP 208 240V 3PH T2MSAV20LM1Y 92W63 x x 460V 3PH T2MSAV20LM1G 92W64 x x 575V 3PH T2MSAV20LM1J 92W65 x x 3HP 208 240V 3PH T2MSAV20LN1Y 92W66 x x x x 460V 3PH T2MSAV20LN1G 92W67 x x x x 575V 3P...

Page 4: ...V 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...

Page 5: ...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...

Page 6: ...609 1 18 664 1 30 710 1 41 751 1 52 789 1 63 827 1 72 861 1 80 892 1 89 3300 624 1 24 677 1 36 722 1 48 761 1 59 799 1 70 836 1 79 870 1 88 901 1 97 3400 639 1 30 690 1 43 733 1 55 772 1 67 810 1 77 8...

Page 7: ...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...

Page 8: ...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 10 1041 3 19 5800 835 2 95...

Page 9: ...3 12 6400 483 1 60 534 1 87 582 2 08 625 2 28 666 2 50 705 2 73 741 2 99 775 3 25 6600 491 1 70 544 1 97 591 2 18 633 2 39 674 2 62 712 2 86 747 3 12 781 3 38 6800 501 1 81 553 2 08 600 2 29 642 2 51...

Page 10: ...27 691 2 49 728 2 73 763 2 98 798 3 22 6200 527 1 78 574 1 99 618 2 18 660 2 39 699 2 62 736 2 87 771 3 12 805 3 36 6400 538 1 89 585 2 09 628 2 29 669 2 51 708 2 75 743 3 01 778 3 26 812 3 50 6600 55...

Page 11: ...890 4 06 929 4 25 969 4 45 1009 4 66 1049 4 86 1089 5 06 6800 861 4 00 898 4 20 936 4 40 976 4 60 1016 4 80 1056 5 00 1096 5 20 7000 868 4 15 905 4 35 943 4 54 983 4 74 1023 4 94 1063 5 14 1103 5 34 7...

Page 12: ...le horsepower are used be sure to keep within the service factor limitations outlined on the motor nameplate S Factory installed standard f Factory Installed with extended lead time BLOWER MOTOR ELECT...

Page 13: ...0 28 3400 0 17 0 23 0 06 0 08 0 10 0 06 0 30 3500 0 18 0 24 0 07 0 08 0 11 0 06 0 31 3600 0 18 0 25 0 07 0 08 0 12 0 06 0 32 TAA120 150 ACCESSORY AIR RESISTANCE ID AIR TAA120 Wet Coil Drop TAA150 Wet...

Page 14: ...08 0 11 0 33 5750 0 12 0 16 0 05 0 06 0 08 0 11 0 36 6000 0 13 0 18 0 05 0 07 0 10 0 12 0 38 6250 0 14 0 19 0 06 0 07 0 11 0 14 0 41 6500 0 15 0 20 0 06 0 07 0 11 0 14 0 43 6750 0 16 0 21 0 06 0 08 0...

Page 15: ...0 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 1...

Page 16: ...1 200 550 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...

Page 17: ...1 200 550 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...

Page 18: ...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...

Page 19: ...00 550 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...

Page 20: ...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...

Page 21: ...de energize all 24 volt circuits E Terminal 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 pan is provide...

Page 22: ...blower performance tables Measure the indoor blower motor s rpm Measure the static pressure external to the unit NOTE The indoor coil must be dry and the air filters must be in place when the followi...

Page 23: ...nd the contacts open The relay energizes different stages of heat 4 Relays K9 and K19 Relays K9 and K19 are used to electrically isolate the TAA 24 volts components from the T3EHA 24 volt components T...

Page 24: ...age 24 V Wiring Diagrams TAA072 240 SEQUENCE OF OPERATION 1 W1 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 25: ...and 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 contactor K15 3 K15 1 closes and ass...

Page 26: ...19 is energized Unit is ready for se cond stage heat but ONLY if there is a W2 call 3 K15 1 closes and assuming primary limit S15 and secon dary limit S20 are closed heating elements HE1 and HE2 are e...

Page 27: ...emand 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 contactor K15 3 K15 1 closes and a...

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