Vertical Upflow Horizontal Left Air Handlers - Trane

Vertical Upflow 

Horizontal Left 

Air Handlers 

2TGB018-048A 

1½ – 5 Ton 

PUB. NO. 22-1778-01

© AMERICAN STANDARD INC. 2006 

Vertical Upflow 

Horizontal Left Air Handlers 

Features: 

• Full line 1 1/2 - 5 tons 

Expanded application fit with narrow 

cabinet profile 

Maximum depth 21" - fits pull-down 

staircase 

Exclusive maximum width 23.5" - fits 

2-ft. wide door all sizes 

Convertible upflow to horizontal left 

(no tools required) 

Attractive enamel finish 

R 4.2 - 1" foil faced insulation 

Versatile duct flange - allows flush fit 

3/4", 1" or 1.5" duct insulation 

Tight cabinet - low leakage by design 

IAQ (Indoor Air Quality) sloped/free 

draining pan (no standing water) 

Durable, glass-filled Lexan - Never 

rust, no leak drain pan 

Exclusive easy clean coil and drain pan 

Exclusive standard size replaceable 

fiberglass filters 

Easy to remove filters and blowers for 

easy cleaning and replacement 

Filter panel stamped with word “filter” 

Easy access electrical controls and 

hook-up 

Built-in time delay 

Direct drive motor 

Polarized plugs for easy hook-up to 

electric heaters 

200/230 volt primary and 24 volt 

secondary transformer 

Electric heaters with breaker option on 

all sizes 

AccuTron refrigerant control 

Expansion valve (bleed TXV) 

standard on 5-ton model 

Optional extended warranties 

2 Pub. No. 22-1778-01

MODEL 

RATED VOLTS/PH/HZ. 

RATINGS1 

INDOOR COIL — Type 

Rows — F.P.I. 

Face Area (sq. ft.) 

Tube Size (in.) 

Refrigerant Control 

Drain Conn. Size (in.) 2 

INDOOR FAN — Type 

Diameter-Width (in.) 

No. Used 

Drive - No. Speeds 

CFM vs. in w.g.1 

No. Motors — H.P. 

Motor Speed R.P.M. 

Volts/Ph/Hz 

F.L. Amps - L.R. Amps 

FILTER 

Vertical Applications 

Filter Furnished? 

Lo. Vel. (No.-Size-Thk) 

Horizontal Applications 


Recommended Size 3 

REFRIGERANT (R-22) 

Ref. Line Connections 

Conn. Size — in. Gas 

Conn. Size — in Liq. 

DIMENSIONS 

Crated (in.) 

Uncrated 

WEIGHT 

Shipping (Lbs.) / Net (Lbs.) 

MODEL 

RATED VOLTS/PH/HZ. 

RATINGS1 

INDOOR COIL — Type 

Rows — F.P.I. 

Face Area (sq. ft.) 

Tube Size (in.) 

Refrigerant Control 

Drain Conn. Size (in.) 2 

INDOOR FAN — Type 

Diameter-Width (in.) 

No. Used 

Drive - No. Speeds 

CFM vs. in w.g.1 

No. Motors — H.P. 

Motor Speed R.P.M. 

Volts/Ph/Hz 

F.L. Amps - L.R. Amps 

FILTER 

Vertical Applications 


Lo. Vel. (No.-Size-Thk) 

Horizontal Applications 


Recommended Size 3 

REFRIGERANT (R-22) 

Ref. Line Connections 

Conn. Size — in. Gas 

Conn. Size — in Liq. 

DIMENSIONS 

Crated (in.) 

Uncrated 

WEIGHT 

Shipping (Lbs.) / Net (Lbs.) 

2TGB3F18A1000A 

208-230/1/60 

See O.D. Specs 

Plate Fin 

3 - 14 

2.29 

3/8 - Copper 

TXV-NB4 

3/4 NPT 

Centrifugal 

10 X 7 

1 

Direct - 3 

See FanTable 

1 - 1/6 

1060 

208-230/1/60 

1.15 - 1.72 

YES 

1 - 16 X 20 

NO 

See NOTE 3 

Brazed 

5/8 

1/4 

H x W x D 

47.5 X 21 X 24.5 

45.7 X 18 X 21 

124 / 109 


208-230/1/60 


Plate Fin 

3 - 14 

4.58 

3/8 - Copper 

TXV-NB4 

3/4 NPT 

Centrifugal 

10 X 10 

1 

Direct - 3 

See FanTable 

1 - 1/2 

1075 

208-230/1/60 

3.9 - 8.7 

YES 

1 - 20 X 20 

NO 

See NOTE 3 

Brazed 

7/8 

3/8 

H x W x D 

50.25 X 26 X 24.5 

48.25 X 23.5 X 21.5 

147 / 131 

General 

Data 

Pub. No. 22-1778-01 3 


208-230/1/60 


Plate Fin 

3 - 14 

2.29 

3/8 - Copper 

TXV-NB4 

3/4 NPT 

Centrifugal 

10 X 7 

1 

Direct - 3 

See FanTable 

1 - 1/6 

1060 

208-230/1/60 

1.15 - 1.72 

YES 

1 - 16 X 20 

NO 

See NOTE 3 

Brazed 

3/4 

5/16 

H x W x D 

47.5 X 21 X 24.5 

45.7 X 18 X 21 

125 / 110 


208-230/1/60 


Plate Fin 

3 - 14 

6.19 

3/8 - Copper 

TXV-NB4 

3/4 NPT 

Centrifugal 

10 X 10 

1 

Direct - 3 

See FanTable 

1 - 1/2 

1075 

208-230/1/60 

3.5 - 8.3 

YES 

1 - 22X 20 

NO 

See NOTE 3 

Brazed 

7/8 

3/8 

H x W x D 

59.25 X 26 X 24.5 

57.25 X 23.5 X 21.5 

172 / 153 


208-230/1/60 


Plate Fin 

4 - 14 

2.75 

3/8 - Copper 

TXV-NB4 

3/4 NPT 

Centrifugal 

10 X 8 

1 

Direct - 3 

See FanTable 

1 - 1/4 

850 

208-230/1/60 

2.0 - 2.86 

YES 

1 - 16 X 20 

NO 

See NOTE 3 

Brazed 

3/4 

5/16 

H x W x D 

53.7 X 21 X 24.7 

52 X 18 X 21 

135 / 119 


208-230/1/60 


Plate Fin 

4 - 14 

2.75 

3/8 - Copper 

TXV-NB4 

3/4 NPT 

Centrifugal 

10 X 8 

1 

Direct - 3 

See FanTable 

1 - 1/3 

1075 

208-230/1/60 

2.1 - 5.26 

YES 

1 - 16 X 20 

NO 

See NOTE 3 

Brazed 

7/8 

3/8 

H x W x D 

53.7 X 21 X 24.7 

52 X 18 X 21 

135 / 119 

1 These Air Handlers are A.R.I. certified with various Split 

System Air Conditioners and Heat Pumps (ARI STANDARD 

210/240). Refer to the Split System Outdoor Unit Product 

Data Guides for performance data. 

2 3/4" Male Plastic Pipe (Ref.: ASTM 1785-76) 

3 Minimum filter size for horizontal applications will be 

based on airflow selection and will be calculated as follows: 

Low Velocity Filter: Face area (Sq. Ft.) = CFM / 300 

High Velocity Filter: Face area (Sq. Ft.) = CFM / 500 

4 Torque spec for TXV = Tighten 1/6 turn past finger tight

Performance 

Data 

EXTERNAL 

Airflow Performance 

2TGB3F18A1000A: Wet coil, No Heaters 

AIRFLOW (CFM) 

STATIC 

PRESSURE 

VERTICAL HORIZONTAL 

(in.w.g.) 

230 VOLTS 208 VOLTS 230 VOLTS 208 VOLTS 

HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW 

0 895 830 648 805 735 567 878 814 659 791 727 576 

0.1 864 799 625 771 711 545 841 781 626 758 695 548 

0.2 828 766 598 738 679 514 802 743 591 722 659 514 

0.3 790 731 567 703 644 477 760 702 555 683 621 476 

0.4 748 691 531 664 604 437 715 656 517 639 580 437 

0.5 702 645 487 619 559 395 665 607 473 591 536 393 

0.6 649 590 433 565 506 345 608 552 422 536 486 341 

0.7 582 525 364 499 443 283 544 490 358 474 428 276 

0.8 497 445 276 419 364 198 468 418 277 401 357 191 

0.9 385 347 164 322 263 78 378 335 172 316 267 75 

NOTES: With filter, no horizontal drip tray 

As shipped, with filter 

Small apex baffle 

Subtract 0.06" W.G. for downflow 

Subtract 0.05"" W.G. for horizontal left 



EXTERNAL 

AIRFLOW (CFM) 

STATIC 

PRESSURE 


(in.w.g.) 



0 1035 965 773 926 854 692 1015 955 786 935 878 702 

0.1 992 934 730 885 814 648 962 910 759 891 834 675 

0.2 944 884 695 845 777 616 916 864 718 849 792 632 

0.3 896 834 661 804 741 582 872 819 674 807 750 586 

0.4 849 788 621 761 700 537 824 773 628 761 705 544 

0.5 800 744 569 713 651 477 768 725 580 710 655 501 

0.6 742 690 501 655 591 403 702 670 521 650 596 444 

0.7 665 603 410 582 516 319 625 601 438 579 526 351 

0.8 555 453 293 489 424 238 538 510 314 493 441 190 

0.9 396 197 146 367 313 174 443 387 122 391 338 - 






4 Pub. No. 22-1778-01

Performance 

Data 

EXTERNAL 



AIRFLOW (CFM) 

STATIC 

PRESSURE 


(in.w.g.) 



0 1114 988 841 976 835 699 1118 1014 858 992 856 721 

0.1 1083 960 817 941 818 682 1080 979 836 969 839 702 

0.2 1046 935 799 914 801 665 1036 947 815 939 820 686 

0.3 1004 908 781 887 781 647 990 913 792 905 798 669 

0.4 958 875 757 856 756 625 942 874 764 867 770 648 

0.5 908 834 723 818 725 597 893 827 729 824 734 619 

0.6 851 782 679 770 684 562 838 770 685 772 688 581 

0.7 783 719 624 708 632 519 772 705 630 709 631 532 

0.8 699 645 560 633 565 466 685 630 563 629 562 471 

0.9 594 560 491 545 483 404 565 548 485 526 479 398 






EXTERNAL 



AIRFLOW (CFM) 

STATIC 

PRESSURE 


(in.w.g.) 



0 1305 1191 1102 1239 1062 957 1262 1187 1112 1211 1080 967 

0.1 1259 1154 1076 1200 1039 947 1211 1146 1080 1164 1051 948 

0.2 1209 1112 1041 1154 1012 924 1156 1082 1031 1114 1007 930 

0.3 1156 1066 1001 1105 980 895 1099 1012 975 1062 955 902 

0.4 1101 1018 958 1054 941 863 1044 946 917 1009 901 858 

0.5 1043 968 910 1000 896 826 986 888 860 952 845 797 

0.6 981 911 857 939 841 781 922 832 800 889 785 722 

0.7 911 843 793 866 776 721 843 768 731 813 715 641 

0.8 832 757 713 773 697 636 738 676 641 717 627 568 

0.9 739 641 610 649 603 511 593 531 517 592 510 520 






Pub. No. 22-1778-01 5

Performance 

Data 

EXTERNAL 



AIRFLOW (CFM) 

STATIC 

PRESSURE 


(in.w.g.) 


HIGH M-HI LOW HIGH M-HI LOW HIGH M-HI LOW HIGH M-HI LOW 

0 1925 1823 1432 1833 1691 1212 1870 1788 1424 1786 1674 1662 

0.1 1850 1753 1399 1758 1636 1192 1791 1724 1397 1728 1612 1621 

0.2 1765 1676 1363 1686 1563 1168 1717 1648 1358 1657 1545 1558 

0.3 1673 1597 1317 1611 1489 1136 1641 1569 1309 1580 1476 1491 

0.4 1579 1518 1255 1530 1421 1091 1559 1490 1251 1500 1404 1422 

0.5 1484 1440 1175 1439 1358 1031 1466 1411 1184 1416 1328 1350 

0.6 1388 1358 1078 1340 1286 956 1363 1326 1105 1326 1244 1262 

0.7 1292 1266 966 1233 1182 868 1249 1225 1014 1223 1146 1135 

0.8 1192 1154 846 1123 1013 769 1127 1090 906 1096 1027 940 

0.9 1084 1008 726 1015 734 663 1003 900 778 933 878 636 






EXTERNAL 



AIRFLOW (CFM) 

STATIC 

PRESSURE 


(in.w.g.) 


HIGH M-HI LOW HIGH M-HI LOW HIGH M-HI LOW HIGH M-LO LOW 

0 1917 1664 1309 1836 1473 1101 1787 1645 1391 1751 1510 1134 

0.1 1830 1615 1308 1767 1447 1108 1715 1579 1366 1678 1465 1157 

0.2 1751 1561 1287 1698 1413 1102 1637 1519 1329 1606 1418 1138 

0.3 1675 1501 1256 1627 1372 1086 1555 1454 1282 1532 1362 1102 

0.4 1596 1437 1218 1551 1322 1059 1472 1376 1223 1451 1295 1062 

0.5 1511 1366 1173 1470 1263 1022 1387 1284 1153 1363 1215 1024 

0.6 1420 1289 1118 1382 1192 972 1298 1181 1072 1266 1125 983 

0.7 1323 1202 1045 1288 1106 905 1201 1075 981 1163 1027 926 

0.8 1223 1104 942 1188 1000 817 1091 980 881 1055 929 830 

0.9 1126 992 794 1086 869 702 962 911 775 947 840 663 






6 Pub. No. 22-1778-01

Performance 

Data 

Pub. No. 22-1778-01 7 

MODULAR AIR HANDLER HEATER MODEL NUMBER BAYHTR 

MODEL 

NUMBER 

APPLICATION 

1405 

4.80kw 

1408 

7.68kw 

1410 

3410 

9.60kw 

1415 

3415 

15.36kw 

1419 

19.20kw 

NUMBER OF HEATER RACKS 1 2 2 3 4 

2TGB3F18A 

2TGB3F25A 

2TGB3F30A 

2TGB3F36A 

2TGB3F42A 

2TGB3F48A 

A/C or Elec. Furnace L L L N/A N/A 

Heat Pump L M H N/A N/A 

A/C or Elec. Furnace L L L L N/A 

Heat Pump L M M H N/A 


Heat Pump L L L M N/A 


Heat Pump L L L M N/A 


Heat Pump L L L H N/A 

A/C or Elec. Furnace L L L L L 

Heat Pump L L L H H 

(L)Low, (M)Medium, (H)High Indicate minimum heating speed setting for blower/motor 

operation. N/A - not applicable

AIRFLOW 

CFM 

NUMBER OF RACKS 

Performance 

Data 

PRESSURE DROP FOR ELECTRIC HEATERS 

IN AIR HANDLER MODELS 

1 2 3 4 

AIR PRESSURE DROP 

INCHES W.G. 

600 0.01 0.02 0.02 

700 0.01 0.02 0.02 

800 0.02 0.03 0.03 0.04 

900 0.03 0.03 0.04 0.05 

1000 0.04 0.04 0.05 0.06 

1100 0.04 0.05 0.06 0.07 

1200 0.05 0.06 0.07 0.08 

1300 0.06 0.07 0.08 0.09 

1400 0.07 0.08 0.10 0.11 

1500 0.08 0.09 0.11 0.13 

1600 0.09 0.10 0.12 0.15 

1700 0.10 0.11 0.14 0.17 

1800 0.11 0.13 0.16 0.19 

1900 0.13 0.15 0.18 0.21 

2000 0.14 0.17 0.23 0.23 

HEATER RACKS 

HEATER 

MODEL NO. 

NO. OF 

RACKS 

BAYHTR1405 1 

BAYHTR1408 2 

BAYHTR1/3410 2 

BAYHTR1/3415 3 

BAYHTR1419 4 

8 Pub. No. 22-1778-01

Performance 

Data 

2TGB3F18A WIRING DATA 

Indoor Blower Motor Powered from Heater Circuit 1 

Number 

240 VOLT 208 VOLT 

Heater 

Model No. 

of 

Circuits/ 

Phase 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

BAYHTR1405+++ 1/1 4.80 16400 20 26 30 3.60 12300 17.3 23 25 

BAYHTR1408+++ 1/1 7.68 26200 32 41 45 5.77 19700 27.7 36 40 

BAYHTR1410+++ 1/1 9.60 32500 40 51 60 7.21 24600 34.7 45 45 

BAYHTR3410000 1/3 9.60 32800 34.6 43 50 7.21 24600 30 37 40 

* Circuit 1/Circuit 2 (Minimum Circuit Ampacity for Circuit 1 includes Blower Motor Amp 

+++ = 000, PDC, BRK 000 = pigtails, PDC= contains pull disconnect, BRK=contains Circuit disconnects 

IMPORTANT: Any power supply and/or combination power supply, circuit or circuits must be wired and protected in accordance with local Electrical 

Codes. 



Number 


Heater 

Model No. 

of 

Circuits/ 

Phase 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

BAYHTR1405+++ 1/1 4.80 16400 20 26 30 3.60 12300 17.3 23 25 

BAYHTR1408+++ 1/1 7.68 26200 32 41 45 5.77 19700 27.7 36 40 

BAYHTR1410+++ 

BAYHTR3410 000 

BAYHTR1415 BRK 


1/1 

1/3 

2/1 

1/3 

9.60 

9.60 

15.36 

15.36 

32800 

32800 

52400 

52400 

40 

34.6 

40/24 

39.1 

Pub. No. 22-1778-01 9 

51 

43 

51*/30 

49 

60 

45 

60*/30 

50 

7.21 

7.21 

11.52 

11.52 

24600 

24600 

39300 

39300 

34.6 

30 

34.6/20.8 

34 

45 

37 

45*/26 

43 




Codes. 



Number 


Heater 

Model No. 

of 

Circuits/ 

Phase 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

BAYHTR1405+++ 1/1 4.80 16400 20 28 30 3.60 12300 17.3 24 25 

BAYHTR1408+++ 1/1 7.68 26200 32 43 45 5.77 19700 27.7 37 40 

BAYHTR1410+++ 




1/1 

1/3 

2/1 

1/3 

9.60 

9.60 

15.36 

15.36 

32800 

32800 

52400 

52400 

40 

34.6 

40/24 

39.9 

53 

43 

53*/30 

50 

60 

45 

60*/30 

50 

7.20 

7.20 

11.53 

11.53 

24600 

24600 

39300 

39300 

34.6 

30 

34.6/20.8 

34.8 

46 

37 

46*/26 

43 




Codes. 

45 

40 

45*/30 

45 

50 

40 

50*/30 

45

Performance 

Data 



Number 


Heater 

Model No. 

of 

Circuits/ 

Phase 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

BAYHTR1405+++ 1/1 4.80 16400 20 28 30 3.60 12300 17.3 24 25 

BAYHTR1408+++ 1/1 7.68 26200 32 43 45 5.77 19700 27.7 37 40 

BAYHTR1410+++ 




1/1 

1/3 

2/1 

1/3 

9.60 

9.60 

15.36 

15.36 

32800 

32800 

52400 

52400 

40 

34.6 

40/24 

39.9 

53 

43 

53*/30 

50 

60 

45 

60*/30 

50 

7.20 

7.20 

11.53 

11.53 

24600 

24600 

39300 

39300 

34.6 

30 

34.6/20.8 

34.8 

10 Pub. No. 22-1778-01 

46 

37 

46*/26 

44 




Codes. 

2TGB3F42A1000A WIRING DATA 


Number 


Heater 

Model No. 

of 

Circuits/ 

Phase 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

BAYHTR1405+++ 1/1 4.80 16400 20 30 30 3.60 12300 17.3 27 30 

BAYHTR1408+++ 1/1 7.68 26200 32 45 45 5.76 19700 27.7 39 40 

BAYHTR1410+++ 




1/1 

1/3 

2/1 

1/3 

9.60 

9.60 

15.36 

15.36 

32800 

32800 

52400 

52400 

40 

34.6 

40/24 

41.5 

55 

43 

55*/30 

52 

60 

45 

60*/30 

60 

7.20 

7.20 

11.53 

11.53 

24600 

24600 

39300 

39300 

34.6 

30 

34.6/20.8 

36.4 



IMPORTANT: Any power supply and/or combination power supply, circuit or circuits must be wired and protected in accordance with local Electrical Codes. 

2TGB3F48A1000A WIRING DATA 


Number 


Heater 

Model No. 

of 

Circuits/ 

Phase 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

Capacity 

KW BTUH 

Heater 

Amps per 

Circuit 

Minimum 

Circuit 

Ampacity 

Maximum 

Overload 

Protection 

BAYHTR1405+++ 1/1 4.80 16400 20 29 30 3.60 12300 17.3 26 30 

48 

37 

48*/26 

45 

BAYHTR1408+++ 1/1 7.68 26200 32 44 45 5.77 19700 27.7 39 40 

BAYHTR1410+++ 




1/1 

1/3 

2/1 

1/3 

9.60 

9.60 

15.36 

15.36 

32800 

32800 

52400 

52400 

40 

34.6 

40/24 

41.1 

54 

43 

54*/30 

51 

60 

45 

60*/30 

60 

7.20 

7.20 

11.53 

11.53 

24600 

24600 

39300 

39300 

34.6 

30 

34.6/20.8 

36 

BAYHTR1419 BRK 2/1 19.20 65500 32/48 44*/60 45*/60 14.42 49200 27.7/41.6 39*/52 40*/60 



IMPORTANT: Any power supply and/or combination power supply, circuit or circuits must be wired and protected in accordance with local Electrical Codes. 

48 

37 

48*/26 

45 

50 

40 

50*/30 

45 

50 

40 

50*/30 

45 

50 

40 

50*/30 

45

Field 

Wiring 

WIRING DIAGRAM FOR 2TGB3F18,25,30,36,42,48A1000A 

Pub. No. 22-1778-01 11

Field 

Wiring 

TWE-G AIR HANDLERS WITH SINGLE SPEED COOLING UNIT, 1 STAGE HEAT 

FIELD WIRING DIAGRAMS FOR AIR HANDLERS WITH HEAT PUMP 

From Dwg. 21B810091 Rev. 0 

From Dwg. 21B810093 Rev. 0 

12 Pub. No. 22-1778-01

NOTE 3 

Electrical 

Data 

Unit Wiring Diagram 

NOTE 3 

Pub. No. 22-1778-01 13 

3 . FOR REPLACEMENT FUSE USE ONLY BUSSMANN CAT. NO. GMQ-3 , 2/10, 3.2 A, 300 V RATING. 

FUSE AND WH/3 WIRE NOT ON ALL MODELS. 

From Dwg. 21C810077 P02

TOP VIEW 

SIDE VIEW 

RETURN 

OPENING 

BOTTOM VIEW 

MODEL NO. A B C D E 

Outline 

Drawing 

Outline Drawing for 2TGB018-036A 

AIRFLOW 

VERTICAL UPFLOW 

MINIMUM UNIT CLEARANCE TABLE 

TO 

COMBUSTIBLE 

MATERIAL 

(REQUIRED) 

DISCHARGE 

OPENING 

AIRFLOW 

SERVICE 

CLEARANCE 

(RECOMMENDED) 

SIDES 0" 2"* 

FRONT 0" 21" 

BACK 0" 0" 

INLET DUCT 0" 1" 

OUTLET 

DUCT 

1"* 

*1" FOR THE FIRST 3 FT. OF OUTLET DUCT WHEN ELECTRIC 

HEATERS ARE INSTALLED. EXCEPT MODELS BAYHTR1405,1408, 

AND 1410 ARE APPROVED FOR 0" PLENUM AND DUCT CLEARANCE 

IN THE UPFLOW CONFIGURATION ONLY. 

Flow 

Control 

Gas Line 

BRAZE 

Liq. Line 

BRAZE 

2TGB3F018A 45.70 18.00 16.00 3.13 5.25 TXV-NB 5/8 1/4 

2TGB3F25A 45.70 18.00 16.00 3.13 5.25 FCCV 3/4 5/16 

2TGB3F30A 52.00 18.00 16.00 3.13 5.25 FCCV 3/4 5/16 

2TGB3F36A 52.00 18.00 16.00 3.13 5.25 FCCV 7/8 3/8 

HORIZONTIAL LEFT 

DISCHARGE 

OPENING 

FIG. 1 FIG. 2 

FIG. 1 FIG. 2 

MODEL NO. F G F G 

2TGB3F018A 16 12.12 15 11.12 

2TGB3F25A 16 12.12 15 11.12 

2TGB3F30A 16 12.12 15 11.12 

2TGB3F36A 16 12.12 15 11.12 

2TGB3F42A 21.50 12.12 20.50 11.12 

2TGB3F48A 21.50 12.12 20.50 11.12 

14 Pub. No. 22-1778-01

TOP VIEW 

SIDE VIEW 

RETURN 

OPENING 

BOTTOM VIEW 

MODEL NO. A B C D E H 

Outline 

Drawing 

Outline Drawing for 2TGB042-048A 

AIRFLOW 

VERTICAL UPFLOW 

MINIMUM UNIT CLEARANCE TABLE 

TO 

COMBUSTIBLE 

MATERIAL 

(REQUIRED) 

Pub. No. 22-1778-01 15 

SERVICE 

CLEARANCE 

(RECOMMENDED) 

SIDES 0" 2"* 

FRONT 0" 21" 

BACK 0" 0" 

INLET DUCT 0" 1" 

OUTLET 

DUCT 

1"* 

*1" FOR THE FIRST 3 FT. OF OUTLET DUCT WHEN ELECTRIC 

HEATERS ARE INSTALLED. EXCEPT MODELS BAYHTR1405,1408, 

AND 1410 ARE APPROVED FOR 0" PLENUM AND DUCT CLEARANCE 

IN THE UPFLOW CONFIGURATION ONLY. 

Flow 

Control 

Gas Line 

BRAZE 

Liq. Line 

BRAZE 

2TGB3F42A 48.25 23.50 21.50 4.61 6.73 18.75 FCCV 7/8 3/8 

2TGB3F48A 57.25 23.50 21.50 4.61 6.73 22.50 TXV 7/8 3/8 

DISCHARGE 

OPENING 

DISCHARGE 

OPENING 

FIG. 1 FIG. 2 

AIRFLOW 

HORIZONTAL LEFT 

FIG. 1 FIG. 2 

MODEL NO. F G F G 

2TGB3F42A 21.50 12.12 20.50 11.12 

2TGB3F48A 21.50 12.12 20.50 11.12

Trane Co. 

a business of American Standard, Inc. 

6200 Troup Highway 

Tyler, TX 75707 

www.trane.com 

For more information contact 

your local dealer (distributor) 

Mechanical 

Specification Options 

Features and General Information 

These blower coil units are completely 

factory assembled including coil, condensate 

drain pan, fan, motor, filters and 

controls in an insulated casing that can 

be applied in horizontal left or vertical 

upflow configuration. This model has 

4.2 “R” value insulation and additional 

sealing systems. 

The unit ships in the left-hand horizontal 

configuration and converts to vertical 

upflow just by standing the unit on end. 

No tools required. 

Casing 

These models have a rugged galvanized 

sheet metal and steel frame construction. 

The casing is painted with an enamel 

finish. The casing is insulated and 

provides knockouts for electrical power 

and control wiring. 

Refrigerant Circuits 

The TGB units have a single refrigerant 

circuit. The refrigerant circuit is controlled 

by a factory installed flow control check 

valve (FCCV). 

Coil 

Aluminum fin surface is mechanically 

bonded to 3/8 inch OD copper tubing. 

Coils are factory pressure and leak 

tested. 

Fan 

The blower housing is forward curved, 

dynamically balanced with a speed direct 

drive fan motor. The fan motor is permanently 

lubricated. 

Controls 

Low voltage fan contactor, and plug-in 

module for accessory electric heat 

control is included. TGB models also 

have a check valve. 

Filters 

The TGB018A through TGB048A have 

standard size filters. 

Electric Heaters 

Heaters for the TGB air handlers are 

available in a wide range of capacities 

and voltages with various staging options, 

and plug-in control wiring. Heaters 

fit inside the internal compartment. 

Trane has a policy of continuous product and product data improvement, it reserves the right to change design 

and specifications without notice. 

P.I.

Vertical Upflow Horizontal Left Air Handlers - Trane

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