Trane TAMXB0A24V21DB Installation and operating instructions

SSAAFFEETTYY WWAARRNNIINNGG
Only qualified personnel should install and service the equipment The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment
July 2023 1188--GGJJ8899DD11--11FF--EENN
Variable Speed Air Handlers
Convertible 2 — 5 Ton
TAMXB0A24V21DB
TAMXB0B30V31DB
TAMXB0C36V31DB
TAMXB0C42V41DB
TAMXB0C48V41DB
TAMXB0C60V51DB
TM
The Diagnostics Mobile App is available by scanning a
QR code located inside this unit or by searching for the
Link Diagnostics App in your App Store.
NNoottee:: Graphics in this document are for representation only. Actual model
may differ in appearance.”
NNoottee:: For use with BAYEA series heaters ONLY.
NNoottee:: This unit can be used in Link Communicating mode or 24 volt mode.
NNoottee:: Need to use Diagnostics App to configure blower delays and
accessories etc., in 24 volt mode.
Installation, Operation, and Maintenance

©2023 18-GJ89D1-1F-EN
SAFETY SECTION
AI HANDLE S
IImmppoorrttaanntt — This document contains a wiring
diagram, a parts list, and service information This is
customer property and is to remain with this unit
Please return to service information pack upon
completion of work
WWAARRNNIINNGG
HHAAZZAARRDDOOUUSS VVOOLLTTAAGGEE!!
FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn
pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr
ddeeaatthh
DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg FFoollllooww pprrooppeerr
lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr
ccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd
CCAAUUTTIIOONN
GGRROOUUNNDDIINNGG RREEQQUUIIRREEDD!!
FFaaiilluurree ttoo iinnssppeecctt oorr uussee pprrooppeerr sseerrvviiccee ttoooollss mmaayy
rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy
RReeccoonnnneecctt aallll ggrroouunnddiinngg ddeevviicceess AAllll ppaarrttss ooff tthhiiss
pprroodduucctt tthhaatt aarree ccaappaabbllee ooff ccoonndduuccttiinngg eelleeccttrriiccaall
ccuurrrreenntt aarree ggrroouunnddeedd IIff ggrroouunnddiinngg wwiirreess,, ssccrreewwss,,
ssttrraappss,, cclliippss,, nnuuttss,, oorr wwaasshheerrss uusseedd ttoo ccoommpplleettee aa
ppaatthh ttoo ggrroouunndd aarree rreemmoovveedd ffoorr sseerrvviiccee,, tthheeyy mmuusstt
bbee rreettuurrnneedd ttoo tthheeiirr oorriiggiinnaall ppoossiittiioonn aanndd pprrooppeerrllyy
ffaasstteenneedd
WWAARRNNIINNGG
LLIIVVEE EELLEECCTTRRIICCAALL CCOOMMPPOONNEENNTTSS!!
FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn
pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr
ddeeaatthh
FFoollllooww aallll eelleeccttrriiccaall ssaaffeettyy pprreeccaauuttiioonnss wwhheenn
eexxppoosseedd ttoo lliivvee eelleeccttrriiccaall ccoommppoonneennttss IItt mmaayy bbee
nneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee eelleeccttrriiccaall ccoommppoonneennttss
dduurriinngg iinnssttaallllaattiioonn,, tteessttiinngg,, sseerrvviicciinngg,, aanndd
ttrroouubblleesshhoooottiinngg ooff tthhiiss pprroodduucctt
WWAARRNNIINNGG
PPRREESSSSUURRIIZZEEDD RREEFFRRIIGGEERRAANNTT!!
FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn
ppeerrssoonnaall iinnjjuurryy
SSyysstteemm ccoonnttaaiinnss ooiill aanndd rreeffrriiggeerraanntt uunnddeerr hhiigghh
pprreessssuurree RReeccoovveerr rreeffrriiggeerraanntt ttoo rreelliieevvee pprreessssuurree
bbeeffoorree ooppeenniinngg tthhee ssyysstteemm DDoo nnoo uussee nnoonn--
aapppprroovveedd rreeffrriiggeerraannttss oorr rreeffrriiggeerraanntt ssuubbssttiittuutteess oorr
rreeffrriiggeerraanntt aaddddiittiivveess
CCAAUUTTIIOONN
SSHHAARRPP EEDDGGEE HHAAZZAARRDD!!
FFaaiilluurree ttoo ffoollllooww tthhiiss CCaauuttiioonn ccoouulldd rreessuulltt iinn
pprrooppeerrttyy ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy
BBee ccaarreeffuull ooff sshhaarrpp eeddggeess oonn eeqquuiippmmeenntt oorr aannyy
ccuuttss mmaaddee oonn sshheeeett mmeettaall wwhhiillee iinnssttaalllliinngg oorr
sseerrvviicciinngg
WWAARRNNIINNGG
WWAARRNNIINNGG!!
TThhiiss pprroodduucctt ccaann eexxppoossee yyoouu ttoo cchheemmiiccaallss
iinncclluuddiinngg lleeaadd,, wwhhiicchh aarree kknnoowwnn ttoo tthhee SSttaattee ooff
CCaalliiffoorrnniiaa ttoo ccaauussee ccaanncceerr aanndd bbiirrtthh ddeeffeeccttss oorr
ootthheerr rreepprroodduuccttiivvee hhaarrmm FFoorr mmoorree iinnffoorrmmaattiioonn ggoo
ttoo wwwwww PP6655WWaarrnniinnggss ccaa ggoovv
IImmppoorrttaanntt:: Panel damage can occur with prolonged
exposure to POE lubricants. Air handler
front panels that come in contact with POE
oil must be washed immediately with
soapy water.
IImmppoorrttaanntt:: The TAMX air handlers are only compatible
with BAYEA** internal electric heaters.
NNoottee:: Representative illustrations only included in this
document. Most illustrations display the upflow
configuration.

18-GJ89D1-1F-EN 3
Installer Guide Notes 4
Unit Design 5
Unit Install Preparation 7
Optional Accessories 8
Optional Cabinet Disassembly 9
Placing Unit at Location 13
Unit Location Considerations 14
Four-Way Conversion 15
Ducted and Non-Ducted Return
Applications 17
Additional Unit Preparation
Considerations 18
Setting the Unit — Vertical
Installation 19
Setting the Unit — Horizontal
Installations 21
Connecting the Duct work 22
Refrigerant Line 23
Refrigerant System Layout 23
Refrigerant Line Brazing 24
Condensate Drain Piping 27
Electrical — High Voltage 29
Electrical — Low Voltage 32
Replacement AHC configuration – 24
volt mode 41
Button Press AHC Configuration
Method: Method #2 42
Replacement AHC configuration — LINK
Communicating Mode: 42
Product Specifications 43
Heater Attribute Data 51
Distance from Belly Band to Shaft Face
of Motor for Minimum Vibration 54
Wiring 55
Outline Drawing 56
Filters 57
System Start Up 58
System Charge Adjustments 58
Fault Reporting 59
Stepper Motor Tables—For use with
Low and High Superheat
Troubleshooting 60
Unit Test Options 61
ET / GT and Supply Air Temperature
Sensor 62
Return Air Temperature Sensor 63
Sequence of Operation 64
Abbreviations 64
Checkout Procedures 66
Troubleshooting 67
Notices 72
Table of Contents
TAMX Air Flow Performance Table . . . . . . . . 45

418-GJ89D1-1F-EN
Installer Guide Notes
AALLLL PPhhaasseess ooff tthhiiss iinnssttaallllaattiioonn mmuusstt ccoommppllyy wwiitthh
NNAATTIIOONNAALL,, SSTTAATTEE aanndd LLOOCCAALL CCOODDEESS!!
IImmppoorrttaanntt:: This Document is customer property and is
to remain with t his unit. Please return to
service information upon completion of
work
IImmppoorrttaanntt:: These instructions do not cover all
variations in systems nor provide for every
possible contingency to be met in
connection with the installation. Should
further information be desired or should
particular problems arise which are not
covered sufficiently for the purchaser’s
purposes, the matter should be referred to
your installing dealer.
IImmppoorrttaanntt:: The 24 volt low voltage wire harness is
shipped in the supplied document pack.
NNoottee:: The manufacturer recommends installing ONLY
A.H.R.I. approved, matched indoor and outdoor
systems. Some of the benefits of installing
approved matched indoor and outdoor split
systems are maximum efficiency, optimum
performance, and the best overall system
reliability.
NNoottee:: Condensation may occur on the surface of the air
handler when installed in unconditioned spaces,
verify that all electrical and refrigerant line
penetrations on the air handler are sealed
completely.
The TAMX air handlers will only use the following
internal electric heaters:
BAYEAAC04BK1 BAYEAAC10LG1
BAYEAAC04LG1 BAYEAAC10LG3
BAYEAAC05BK1 BAYEABC15BK1
BAYEAAC05LG1 BAYEABC15LG3
BAYEAAC08BK1 BAYEABC20BK1
BAYEAAC08LG1 BAYEACC25BK1
BAYEAAC10BK1
NNoottee:: Duct heaters cannot be applied with this air
handler.
NNoottee:: The heater size will be automatically configured
by installing a resistor in the Electric heat
harness located in the electric heat compartment
and will be included with the BAYEA heater.

18-GJ89D1-1F-EN 5
Unit Design
Table 1. Cabinet Penetration
Important: Due to the unique design of this unit, which allows the
electrical wiring to be routed within the insulation, do not
screw, cut, or otherwise puncture the unit cabinet in any
location other than the ones illustrated.
Important: Under no conditions should metal strapping be attached
to the unit to be used as support mechanisms for
carrying or suspension purposes.
Screws can be drilled
into bottom of unit.
(1/2” max. screw
length)
(Typical all sides)
Screws, saw cuts,
and other penetra-
tions are allowed in
the blower section
for installation of
Side Return Kit.
(Typical both sides)
Screws are allowed up to 3- 3/4”
from the top of the cabinet
(heater compartment).
(Typical both sides)
Screws for flange kit
attachment are allowed
along the interior of
thecabinet (see arrows)
(Typical all sides)
No penetrations
allowed.
(Typical all sides)
Screws allowed only
in the first 3/4” of front
bottom of unit (in
cross member)
Table 2. Panel emoval
The unit contains four (4) access panels: Blower/Filter, Coil, Line Set,
and Heater.
The Blower/Filter panel is removed using thumb screws.
1. Turn thumb screws on Blower/Filter panel.
2. Pull top of panel out, away from cabinet.
3. Lift panel up out of channel.
4. Set aside.
The Block off plate is removed with a 5/16" nut driver.
1. Remove the two 5/16" screws at the top of the block off plate.
2. Pull top of panel out, away from cabinet.
3. Lift panel up and off mounting bosses at the bottom.
4. Set aside.

618-GJ89D1-1F-EN
The Coil, Line Set, and Heater panels are removed using Phillips head
screws.
Removal requires #3 Size Phillips
Coil and Heater panels must be removed prior to removing the Line
Set panel.
To remove Coil Panel:
1. Turn screws on Coil panel.
2. Rotate bottom of panel away from cabinet.
3. Remove panel from channel.
4. Set aside.
To remove Heater Panel:
1. Turn screws on Heater panel.
2. Pull panel straight out, away from cabinet.
3. Set aside.
Removal of the Line Set panel is required for all refrigerant line brazing
and some condensate line assembly depending on your orientation.
To remove Line Set panel:
1. Remove both Heater and Coil panels.
2. Turn screws on Line Set panel.
3. Pull panel straight out, away from cabinet.
4. Set aside.
Note: After replacing all panels, loosen the Line Set panel screws
approximately 1/4 — 1/2 turn. This will improve the seal
between the Heater Panel and Line Set panel.
UUnniitt DDeessiiggnn

18-GJ89D1-1F-EN 7
Unit Install Preparation
1. Check for damage and report promptly to the carrier any damage
found to the unit.
Note: If the unit must be transported in a horizontal position, it must
be laid on its back (marked “REAR” on carton).
Note: After unit is removed from the carton, verify coil is pressurized.
Carefully remove the liquid line plug. If no pressure is released,
check for leaks.
Note: Remove the cardboard from the bottom of the blower. Cut the
tie wrap and remove the foam shipping block located at the
motor.
Note: Remove the ANA foam found between the blower and
evaporator coil.
ANA
Foam

818-GJ89D1-1F-EN
Optional Accessories
Accessory Number Description Fits Cabinet Size (a)
BAYEAAC04BK1 Electric Heater, 4kW, Breaker, 24V Control, 1 Ph A to C
BAYEAAC04LG1 Electric Heater, 4kW, Lugs, 24VControl, 1 Ph A to C
BAYEAAC05BK1 Electric Heater, 5kW, Breaker, 24V Control, 1 Ph A to C
BAYEAAC05LG1 Electric Heater, 5kW, Lugs, 24VControl, 1 Ph A to C
BAYEAAC08BK1 Electric Heater, 8kW, Breaker, 24V Control, 1 Ph A to C
BAYEAAC08LG1 Electric Heater, 8kW, Lugs, 24VControl, 1 Ph A to C
BAYEAAC10BK1 Electric Heater, 10kW, Breaker, 24V Control, 1 Ph A to C
BAYEAAC10LG1 Electric Heater, 10kW, Lugs, 24VControl, 1 Ph A to C
BAYEABC15BK1 Electric Heater, 15kW, Breaker, 24V Control, 1 Ph B to C
BAYEABC20BK1 Electric Heater, 20kW, Breaker, 24VControl, 1 Ph C
BAYEACC25BK1 Electric Heater, 25kW, Breaker, 24V Control, 1 Ph C
BAYEAAC10LG3 Electric Heater, 10kW, Lugs, 24VControl, 3 Ph A to C
BAYEABC15LG3 Electric Heater, 15kW, Lugs, 24V Control, 3 Ph B to C
BAYSUPFLGAA Supply Duct Flange A A
BAYSUPFLGBA Supply Duct Flange B B
BAYSUPFLGCA Supply Duct Flange C C
BAYRETFLGAA Return Duct Flange A A
BAYRETFLGBA Return Duct Flange B B
BAYRETFLGCA Return Duct Flange C C
BAYSRKIT100A Side Return Kit A to C
BAYFLR1620A High Velocity Filter Kit, 16” x 20” x 1” (10 filters) A
BAYFLR2020A High Velocity Filter Kit, 20” x 20” x 1” (10 filters) B
BAYFLR2220A High Velocity Filter Kit, 22” x 20” x 1” (10 filters) C
TASB175SB (b) (c) Plenum Stand with integrated sound baffle A A
TASB215SB Plenum Stand with integrated sound baffle B B
TASB235SB Plenum Stand with integrated sound baffle C C
MITISRKIT01A Side Return Kit with 16” x 20” Filter A to C
BAYFRKIT175 Front Return Kit for 17.5” Cabinet A
BAYFRKIT210 Front Return Kit for 21.0” Cabinet B
BAYFRKIT235 Front Return Kit for 23.5” Cabinet C
TAYBASETAMA Downflow Sub-Base Kit A to C
BAYBAFKT175A (d) Sound Baffle Kit for 17.5” Cabinet A
BAYBAFKT215A Sound Baffle Kit for 21.0” Cabinet B
BAYBAFKT235A Sound Baffle Kit for 23.5” Cabinet C
TASSBK175 (e) (f) Sound Baffle Kit for 17.5” Cabinet A
TASSBK210 Sound Baffle Kit for 21.0” Cabinet B
TASSBK235 Sound Baffle Kit for 23.5” Cabinet C
BAYICSKIT01A Internal Condensate Switch Kit A to C
BAYHHKIT001A Horizontal Hanger Kit A to C
BAYUVCLK001A UVC Lights A to C
BAYLVKIT100A Low Voltage Conduit Entry Kit A to C
BAYSPEKT200A Single Power Entry Kit A to C
BAYWAAA05SC1AA Hydronic Coil — 50,000 BTUH — Slide-in A to A
BAYWABB07SC1AA Hydronic Coil — 70,000 BTUH — Slide-in B to B
BAYWACC08SC1AA Hydronic Coil — 80,000 BTUH — Slide-in C to C
BAYWACC11SC1AA Hydronic Coil — 100,000 BTUH — Add on C to C
BAYWACNTKT05 Relay Kit for use with BAYWAAA05SC1A A
BAYWACNTKT07 Relay Kit for use with BAYWABB07SC1A B
BAYWACNTKT08 Relay Kit for use with BAYWACC08SC1A C
BAYWACNTKT11 Relay Kit for use with BAYWACC11SC1A C
BAYINSKT175A Solcoustic® Liner Kit for 17.5” cabinet A
BAYINSKT215A Solcoustic® Liner Kit for 21.5” cabinet B
BAYINSKT235A Solcoustic® Liner Kit for 23.5” cabinet C
BAYCNDPIP01A 3/4” PVC Threaded Pipe Kit foam Seal (10 per box) A to C
BAYSENSC360 Supply Air Temperature Sensor A to C
BAYAHPTKT Return Air Pressure Transducer A to C
(a) A Cabinet is 17.5” wide, B Cabinet is 21.5” wide, C Cabinet is 23.5” wide.
(b) Contact your distributor for information.
(c) In open air applications, the plenum stand with sound baffle provides sound reduction.
(d) Mounts inside air handler filter channel.
(e) In return plenum applications, use TASSBK for sound reduction.
(f) Mounts to TASB original plenum stand without integrated baffle.

18-GJ89D1-1F-EN 9
Optional Cabinet Disassembly
Note: If the unit must be transported in a horizontal position, it must be
laid on its back (marked “REAR” on carton).
Note: To reassemble cabinet, follow the steps in reverse order. Ensure
electrical connections are secure and the plug clips are engaged.
1. Remove all four front panels.
2. Remove the two screws on the seal bar and pull the seal bar
straight out.
3. Disconnect all wiring connections routed to the blower assembly.
a. Disconnect the air pressure hose.
Note: Remove the cardboard from the bottom of the blower. Cut the
tie wrap and remove the foam block located at the motor.
Note: Remove ANA Foam from under the upflow drainpan.
Screw Locations
Blower Electrical Connections
ANA FOAM
4. Slide Blower assembly out of unit using built-in blower support
channels and set aside.
5. Disconnect wires to the EEV motor and sensors. Cut the wire ties on
those wire harnesses if necessary and replace after re-installing.
Note: If cut, wire ties that held the sensor must be replaced after the coil is
placed back into the cabinet.

10 18-GJ89D1-1F-EN
6. Slide Coil assembly out of unit using built-in coil support channels
and set aside
Coil Support
Channel
7. Use a 5/16 Allen wrench on the locking mechanism on each side
of the bottom half of the cabinet to loosen the locking mechanism.
The locks loosen by turning counter-clockwise approximately 3/4
of a turn.
OOppttiioonnaall CCaabbiinneett DDiissaasssseemmbbllyy