Installer’s Guide

March 2007 ACC-SVN91A-EN

Model Numbers: Used With:

BAYHTRL TWE060A, BBAYHTRM TWE090A, B

TWE120A, BTWE180BTWE240B, E

Electric Heat

Preface and Warnings and Cautions

© 2005 American Standard Inc. All rights reserved ACC-SVN91A-EN

NOTICE:

Warnings and Cautions appear at appropriate sections throughout this manual. Read these carefully.

� WARNING

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

� CAUTION

Indicates a potentially hazardous situations which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.

CAUTION

Indicates a situation that may result in equipment or property-damage-only accidents.

General

1. These instructions are for the installation of Accessory Electric Heaters into the Split System Heat Pump and Cooling Unit air handlers. Unit-to-heater matchup is described in Table 1 and Table 2.

2. These Air Handlers and Heaters are designed so that all Class I (high voltage) wiring between the heater and unit is accomplished by the method of hard wiring. Class II wiring (low voltage) is accomplished by push-on type wire connectors.

3. Find the heater model number on the heater nameplate. Check Table 1 and Table 2 to ensure heater selected is approved for use with the air handler in which it is to be installed, and that the power supply is compatible with this heater.

Inspection

Inspect the shipping carton and its contents. Check for concealed damage before it is stored or used. Report any damage immediately to the transportation company, and make any appropriate claims. Replace damaged parts with authorized parts only.

Parts List

1 - heater (with enclosure)2 - cable clamps2 - screws (for cable clamp)2 - bullet wire ties4 - regular wire ties2 - plastic bushings11 - screws ( for the L series heaters)20 - screws ( for the M series heaters)

Table 1. Heater Compatibility, (L) Series

UnitsModel No.

Voltage/Phase(i)(ii)

(i) Voltages indicated are for Air Handlers.(ii) For heater rated voltages, see heater nameplates.

Heaters

TWE060A1, B1 208-230 1 ph BAYHTRL106A, 112A, 117A, 123A

TWE060A3, B3 208-230 3 ph BAYHTRL305A, 310A, 315A, 325A

TWE060A4, B4 460 3 ph BAYHTRL405A, 410A, 415A, 425A

TWE060AW 575 3 ph BAYHTRLW05A, W10A, W15A, W25A

TWE090A1, B1 208-230 1ph BAYHTRL106A, 112A, 117A, 123A, 129A

TWE120A1,B1

TWE090A3, B3 208-230 3 ph BAYHTRL305A, 310A, 315A, 325A, 335A

TWE120A3,B3

TWE090A3(iii), B3(iii)

(iii) Field converted to 460/3/60.

460 3 ph BAYHTRL405A, 410A, 415A, 425A, 435A

TWE120A3(iii), B3(iii)

TWE090AW 575 3 ph BAYHTRLW05A, W10A, W15A, W25A, W35A

TWE120AW,BW

Table 2. Heater Compatibility, (M) Series

UnitsModel No. Voltage/Phase(i)(ii)

(i) Voltages indicated are for Air Handlers.(ii) For heater rated voltages, see heater nameplates.

Heaters

TWE180B3, 240B3, 240E3 208-230 3ph BAYHTRM310A, 320A, 330A, 350A

TWE180B4, 240B4, 240E4 460 3 ph BAYHTRM410A, 420A, 430A, 450A

TWE180BW, 240BW, 240EW 575 3 PH BAYHTRMW10A, W20A, W30A,W50A

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Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

BAYHTRL106A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7BAYHTRL112A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8BAYHTRL117A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10BAYHTRL123A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12BAYHTRL129A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14BAYHTRL305A/310A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16BAYHTRM310A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18BAYHTRL315A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19BAYHTRM320A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21BAYHTRL325A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22BAYHTRM330A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24BAYHTRL335A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25BAYHTRM350A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27BAYHTRL405A/410A/W05A/W10A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28BAYHTRM410A/420A/W10A/W20A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30BAYHTRL415A/W15A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31BAYHTRL425A/W25A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33BAYHTRM430A/W30A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35BAYHTRL435A/W35A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36BAYHTRM450A/W50A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Contents

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4. Wire ties and cable clamps supplied should be used to secure the wires from the heater to the air handler control box in a location that will not allow them to interfere with any moving parts.

Note: Important! When a TWE180B or TWE240B/E air handler is used with a TTA150B, 180B, or a 240B/E, a field provided jumper must be installed between B1 and BX on the air handler low voltage terminal board. See Air Handler installer guide interconnect wiring diagram for details.

�WARNINGRotating Components!

During installation, testing, servicing and troubleshooting of this product it may be necessary to measure the speed of rotating components. Have a qualified or licensed service individual who has been properly trained in handling exposed rotating components, perform these tasks. Failure to follow all safety precautions when exposed to rotating components could result in death or serious injury.

Installation

Note: All phases of this installation must comply with National, State, and Local Codes.

1. Remove duct flange from around air discharge on top of the air handler. Retain screws and flange for (optional) installation on top of the heater. See Figure 1 and Figure 2.

2. Remove the control wire knockout (Knockout #1) from top of air handler (see Figure 1 and Figure 2), and insert plastic bushing supplied with heater. This knockout will also be used if single point power entry is utilized.

Note: Important! For ventilation purposes, Heaters L112A, L117A, L123A, L129A, L325A, and L335A require that an additional knockout (knockout #2) be removed (see Figure 1).

Note: When using BAYHTRL325A with a TWE060A3 or B3 (5 ton) air handler, the heater baffle must be removed (see Figure 3).

3. Remove air handler access panel and control box cover. For single point power entry, insert a plastic bushing (supplied) in lower hole, rear of the air handler control box.

4. Place heater on air handler and secure in place with the screws provided.

Low Voltage Wires (24 Volts)

1. For Heaters with single stage heat, there will be 1 brown wire and 1 black wire.

2. For Heaters with two stage heat, there will be 1 brown wire, 1 black wire and 1 orange wire.

3. Route the 2 or 3 low voltage wires down through the plastic bushing in the knockout #1 to the low voltage terminal block mounted on the side of the control box. Wire according to heater wiring diagram.

Figure 1. Top of Air Handler Single Blower

Figure 2. Top of Air Handler Dual Blower

AIR HANDLER BLOWER WHEEL

K.O. FOR CONTROL WIRES & WHENUSING SINGLE POWER ENTRY.KNOCKOUT #1

K.O. TO BEREMOVED WITHL112A, L117A, L123A,L129A, L325A, L335AONLY. KNOCKOUT #2

REMOVE FLANGE & RETAIN SCREWS

AIR HANDLER BLOWER WHEELS KNOCKOUT #1

REMOVE FLANGE & RETAIN SCREWS

Installation

ACC-SVN91A-EN 5

Installation

High Voltage Wires (24 Volts)

CAUTIONUse Copper Conductors Only!

Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors may result in equipment damage.

1. For single point power entry, route 2 or 3 red wires, down through the plastic bushing in knockout #1 and into the air handler control box.

Note: For single phase there will be 2 red wires, and for 3 phase there will be 3 red wires.

2. The 2 or 3 red wires should be hard wired to the bottom contracts of the air handler contactor per the wiring diagram.

Note: Important! When the dual point power entry option is used, the high voltage wires, for single point power entry, should remain capped, coiled up and clamped inside the heater control box.

3. When using dual point power entry, knockouts on the control end of both the air handler and the heater are to be used. See Figure 4 for location of each.

4. Replace air handler control box cover.

Replace air handler access panel.

5. Replace control box panel on accessory heater.

6. Check blower rotation. If incorrect, change positions of any two power leads at fan contactor (F). After electrical hookup has been completed, duct work can be assembled. The duct flanges removed from the air handler, can be secured in place on top of the heater and the duct work can be attached or the flange can be discarded and the duct can be fashioned to fit up to the heater.

Figure 3. End View

Figure 4.

LOOSEN SCREWS TOREMOVE BAFFLE

BAFFLE

END VIEW

BOTTOM VIEW

Heater Power Entry (See Notes 1 & 2)

Wire TieHeaterWires WithUnit Wires

UnitPower Entry(See Note 2)

Single Phase, 2 Wires, 3 Phase, 3 Wires

Fan Contactor (F)

Wires need to be secured in such away with clamps &ties so they will not get caught in belt

Low VoltTerminalBlock

Notes:1) A. For power supply to heater only see the heater nameplate to determine “MCA” and overcurrent protection device values. B. For single point power entry option (heater & blower motor) see the “heater installed” nameplate on the air handler for “MCA” and overcurrent protection device values.2) When electric heater accessory is used single point power entry or dual point power entry is field optional. Single point power entry option is through electric heater only.

Single Point Power Entry Unit Power Wires

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Figure 5. Wiring Diagram for BAYHTRL106A

Wiring Diagrams

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Wiring Diagrams

Figure 6. Wiring Diagram for BAYHTRL106A (continued)

BAYHTRL106A

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Wiring Diagrams

BAYHTRL112A

Figure 7. Wiring Diagram for BAYHTRL112A

ACC-SVN91A-EN 9

Wiring Diagrams

BAYHTRL112A

Figure 8. Wiring Diagram for BAYHTRL112A (continued)

10 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL117A

Figure 9. Wiring Diagram for BAYHTRL117A

ACC-SVN91A-EN 11

Wiring Diagrams

BAYHTRL117A

Figure 10. Wiring Diagram for BAYHTRL117A (continued)

12 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL123A

Figure 11. Wiring Diagram for BAYHTRL123A

ACC-SVN91A-EN 13

Wiring Diagrams

BAYHTRL123A

Figure 12. Wiring Diagram for BAYHTRL123A (continued)

14 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL129A

Figure 5. Wiring Diagram for BAYHTRL129A

ACC-SVN91A-EN 15

Wiring Diagrams

BAYHTRL129A

Figure 5. Wiring Diagram for BAYHTRL129A

16 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL305A/310A

Figure 13. Wiring Diagram for BAYHTRL305A/310A

ACC-SVN91A-EN 17

Wiring Diagrams

BAYHTRL305A/310A

Figure 14. Wiring Diagram for BAYHTRL305A/310A (continued)

18 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRM310A

Figure 15. Wiring Diagram for BAYHTRM310A

ACC-SVN91A-EN 19

Wiring Diagrams

BAYHTRL315A

Figure 16. Wiring Diagram for BAYHTRL315A

20 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL315A

Figure 17. Wiring Diagram for BAYHTRL315A (continued)

ACC-SVN91A-EN 21

Wiring Diagrams

BAYHTRM320A

Figure 18. Wiring Diagram for BAYHTRM320A

22 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL325A

Figure 19. Wiring Diagram for BAYHTRL325A

ACC-SVN91A-EN 23

Wiring Diagrams

BAYHTRL325A

Figure 20. Wiring Diagram for BAYHTRL325A (continued)

24 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRM330A

Figure 21. Wiring Diagram for BAYHTRM330A

ACC-SVN91A-EN 25

Wiring Diagrams

BAYHTRL335A

Figure 22. Wiring Diagram for BAYHTRL335A

26 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL335A

Figure 23. Wiring Diagram for BAYHTRL335A (continued)

ACC-SVN91A-EN 27

Wiring Diagrams

BAYHTRM350A

Figure 24. Wiring Diagram for BAYHTRL350A

28 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL405A/410A/W05A/W10A

Figure 5. Wiring Diagram for BAYHTRL405A/410A/W05A/W10A

ACC-SVN91A-EN 29

Wiring Diagrams

BAYHTRL405A/410A/W05A/W10A

Figure 5. Wiring Diagram for BAYHTRL405A/410A/W05A/W10A

30 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRM410A/420A/W10A/W20A

Figure 25. Wiring Diagram for BAYHTRM410A/420A/W10A/W20A

ACC-SVN91A-EN 31

Wiring Diagrams

BAYHTRL415A/W15A

Figure 26. Wiring Diagram for BAYHTRL415A/W15A

32 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL415A/W15A

Figure 27. Wiring Diagram for BAYHTRL415A/W15A (continued)

ACC-SVN91A-EN 33

Wiring Diagrams

BAYHTRL425A/W25A

Figure 28. Wiring Diagram for BAYHTRL425A/W25A

34 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL425A/W25A

Figure 29. Wiring Diagram for BAYHTRL425A/W25A (continued)

ACC-SVN91A-EN 35

Wiring Diagrams

BAYHTRM430A/W30A

Figure 30. Wiring Diagram for BAYHTRL430A/W30A

36 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRL435A/W35A

Figure 31. Wiring Diagram for BAYHTRL435A/W35A

ACC-SVN91A-EN 37

Wiring Diagrams

BAYHTRL435A/W35A

Figure 32. Wiring Diagram for BAYHTRL435A/W35A (continued)

38 ACC-SVN91A-EN

Wiring Diagrams

BAYHTRM450A/W50A

Figure 33. Wiring Diagram for BAYHTRL450A/W50A

Literature Order Number ACC-SVN91A-EN

Date March 2007

Supersedes ACC-SVN91A-EN (January 2007)

The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.