Trane Technologies 4MXA2024A10NUA Assembly 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
April 2022 MMSS--SSVVNN008844AA--EENN
20 SEER Vertical Air Handler
24,000 Btu/h to 60,000 Btu/h
HP Indoor Units HP Outdoor Units
4MXA2024A10NUA
4MXA2036A10NUA
4MXA2048A10NUA
4MXA2060A10NUA
4TXD2036A10NUA
4TXD2060A10NUA
Installer’s uide

©2022 MS-SVN084A-EN
SAFETY PRECAUTIONS
IImmppoorrttaanntt:: This document contains service
information. This is customer property and
is to remain with this unit. Please return to
service information pack 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 or local distributor.
WWAARRNNIINNGG
EELLEECCTTRRIICCAALL SSHHOOCCKK HHAAZZAARRDD!!
FFaaiilluurree ttoo ffoollllooww tthhiiss wwaarrnniinngg ccoouulldd rreessuulltt iinn
ppeerrssoonnaall iinnjjuurryy oorr ddeeaatthh BBeeffoorree iinnssttaalllliinngg,,
mmooddiiffyyiinngg,, oorr sseerrvviicciinngg ssyysstteemm,, mmaaiinn eelleeccttrriiccaall
ddiissccoonnnneecctt sswwiittcchh mmuusstt bbee iinn tthhee OOFFFF ppoossiittiioonn
TThheerree mmaayy bbee mmoorree tthhaann 11 ddiissccoonnnneecctt sswwiittcchh LLoocckk
oouutt aanndd ttaagg sswwiittcchh wwiitthh aa ssuuiittaabbllee wwaarrnniinngg llaabbeell
WWAARRNNIINNGG
GGRROOUUNNDDIINNGG RREEQQUUIIRREEDD!!
TThhee uunniitt mmuusstt bbee ppeerrmmaanneennttllyy ggrroouunnddeedd FFaaiilluurree
ttoo ddoo ssoo ccaann lleeaadd ttoo eelleeccttrriiccaall sshhoocckk ccaauussiinngg
ppeerrssoonnaall iinnjjuurryy oorr ddeeaatthh
WWAARRNNIINNGG
EELLEECCTTRRIICCAALL PPOOWWEERR SSUUPPPPLLYY!!
TThhiiss pprroodduucctt iiss ffaaccttoorryy sshhiippppeedd ffoorr uussee wwiitthh aa 220088//
223300VV--11PPhh--6600HHzz eelleeccttrriiccaall ppoowweerr ssuuppppllyy TThhiiss aaiirr
hhaannddlleerr mmuusstt nnoott bbee rreeccoonnffiigguurreedd ttoo ooppeerraattee wwiitthh
aannyy ootthheerr ppoowweerr ssuuppppllyy
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
WWAARRNNIINNGG
SSAAFFEETTYY HHAAZZAARRDD!!
TThhee mmaatteerriiaall ooff pplleennuumm aanndd dduuccttwwoorrkk mmuusstt mmeeeett
tthhee ssttaannddaarrdd NNFFPPAA 9900BB TThhee ssuuppppllyy aaiirr pplleennuumm oorr
dduucctt mmuusstt hhaavvee aa ssoolliidd sshheeeett mmeettaall bboottttoomm ppiieeccee
ddiirreeccttllyy aafftteerr tthhee aaiirr hhaannddlleerr uunniitt wwiitthh nnoo ooppeenniinnggss,,
rreeggiisstteerrss oorr fflleexxiibbllee aaiirr dduuccttss llooccaatteedd iinn iitt TThhee ffiirrsstt
66 iinncchheess ooff ssuuppppllyy aaiirr pplleennuumm aanndd dduuccttwwoorrkk mmuusstt
bbee ccoonnssttrruucctteedd ooff sshheeeett mmeettaall aass rreeqquuiirreedd bbyy NNFFPPAA
9900BB MMeettaall pplleennuumm ooff dduucctt mmaayy bbee ccoonnnneecctteedd ttoo
tthhee nnoonn--ccoommbbuussttiibbllee fflloooorr bbaassee ffoorr ddoowwnnffllooww
EExxppoossiinngg ccoommbbuussttiibbllee nnoonn--mmeettaall mmaatteerriiaall ttoo tthhee
ssuuppppllyy ooppeenniinngg ooff aa ddoowwnnffllooww uunniitt ccaann ccaauussee aa ffiirree
rreessuullttiinngg iinn pprrooppeerrttyy ddaammaaggee,, ppeerrssoonnaall iinnjjuurryy oorr
ddeeaatthh IIff fflleexxiibbllee ssuuppppllyy aaiirr dduuccttss aarree uusseedd tthheeyy
mmaayy bbee llooccaatteedd oonnllyy iinn tthhee ssiiddee wwaallllss ooff tthhee
rreeccttaanngguullaarr pplleennuumm,, aa mmiinniimmuumm ooff 66 iinncchheess ffrroomm
tthhee ssoolliidd bboottttoomm
WWAARRNNIINNGG
HHIIGGHH SSYYSSTTEEMM PPRREESSSSUURREE!!
DDuuee ttoo hhiigghh ssyysstteemm pprreessssuurree aanndd eelleeccttrriiccaall sshhoocckk
iinn ppootteennttiiaall,, iinnssttaallllaattiioonn aanndd sseerrvviiccee wwoorrkk ccaann bbee
ddaannggeerroouuss OOnnllyy ttrraaiinneedd aanndd qquuaalliiffiieedd ppeerrssoonnss aarree
ppeerrmmiitttteedd ttoo iinnssttaallll oorr sseerrvviiccee tthhiiss eeqquuiippmmeenntt
OObbsseerrvvee aallll wwaarrnniinnggss ccoonnttaaiinneedd iinn tthhiiss mmaannuuaall aanndd
llaabbeellss//ttaaggss aattttaacchheedd ttoo tthhee eeqquuiippmmeenntt
WWAARRNNIINNGG
EELLEECCTTRRIICCAALL GGRROOUUNNDDIINNGG!!
TThhee uunniitt mmuusstt hhaavvee aann uunniinntteerrrruupptteedd,, uunnbbrrookkeenn
eelleeccttrriicc ggrroouunnddiinngg ttoo mmiinniimmiizzee tthhee ppoossssiibbiilliittyy ooff
ppeerrssoonnaall iinnjjuurryy iiff aann eelleeccttrriicc ffaauulltt ooccccuurrss TThhee
eelleeccttrriicc ggrroouunnddiinngg cciirrccuuiitt mmaayy ccoonnssiisstt ooff aann
aapppprroopprriiaattee ssiizzeedd ppoowweerr ccoorrdd wwhhiicchh ccoonnnneecctteedd
wwiitthh tthhee ggrroouunnddiinngg ppiieeccee llooccaatteedd iinn tthhee uunniitt
ccoonnttrrooll bbooxx aanndd aallssoo ccoonnnneeccttiinngg ttoo tthhee bbuuiillddiinngg
eelleeccttrriicc sseerrvviiccee ppaanneell OOtthheerr mmeetthhooddss ooff
ggrroouunnddiinngg aarree ppeerrmmiitttteedd iiff ppeerrffoorrmmeedd iinn
aaccccoorrddaannccee wwiitthh tthhee ““NNaattiioonnaall EElleeccttrriicc CCooddee””
((NNEECC))// ““AAmmeerriiccaann NNaattiioonnaall SSttaannddaarrddss IInnssttiittuuttee””
((AANNSSII))// ““NNaattiioonnaall FFiirree PPrrootteeccttiioonn AAssssoocciiaattiioonn””
((NNFFPPAA)) 7700 aanndd llooccaall//ssttaattee ccooddeess IInn CCaannaaddaa,,
eelleeccttrriicc ggrroouunnddiinngg ccoonnffoorrmmss ttoo tthhee CCaannaaddiiaann
eelleeccttrriicc ccooddee CCSSAA cc2222 11 FFaaiilluurree ttoo oobbsseerrvvee tthhiiss
wwaarrnniinngg ccaann rreessuulltt iinn eelleeccttrriiccaall sshhoocckk tthhaatt ccaann
ccaauussee ppeerrssoonnaall iinnjjuurryy

MS-SVN084A-EN 3
WWAARRNNIINNGG
IINNSSTTAALLLLAATTIIOONN WWAARRNNIINNGG!!
TThhiiss pprroodduucctt ccaann’’tt bbee iinnssttaalllleedd aatt ccoorrrroossiivvee,,
iinnffllaammmmaabbllee oorr eexxpplloossiivvee eennvviirroonnmmeenntt oorr tthhee
ppllaaccee wwiitthh ssppeecciiaall rreeqquuiirreemmeennttss,, ssuucchh aass kkiittcchheenn
OOtthheerrwwiissee,, iitt wwiillll aaffffeecctt tthhee nnoorrmmaall ooppeerraattiioonn oorr
sshhoorrtteenn tthhee sseerrvviiccee lliiffee ooff tthhee uunniitt,, oorr eevveenn ccaauussee
ffiirree hhaazzaarrdd oorr sseerriioouuss iinnjjuurryy AAss ffoorr aabboovvee ssppeecciiaall
ppllaacceess,, pplleeaassee aaddoopptt ssppeecciiaall aaiirr ccoonnddiittiioonneerr wwiitthh
aannttii--ccoorrrroossiivvee oorr aannttii--eexxpplloossiioonn ffuunnccttiioonn
IImmpprrooppeerr iinnssttaallllaattiioonn,, aaddjjuussttmmeenntt,, aalltteerraattiioonn,,
sseerrvviiccee,, mmaaiinntteennaannccee,, oorr uussee ccaann ccaauussee eexxpplloossiioonn,,
ffiirree,, eelleeccttrriiccaall sshhoocckk,, oorr ootthheerr ccoonnddiittiioonnss wwhhiicchh
mmaayy ccaauussee ddeeaatthh,, ppeerrssoonnaall iinnjjuurryy,, oorr pprrooppeerrttyy
ddaammaaggee TThhee ffoolllloowwiinngg sstteeppss sshhaallll bbee ffoolllloowweedd ttoo
aavvooiidd eeqquuiippmmeenntt ddaammaaggee,, ppeerrssoonnaall iinnjjuurryy oorr
ddeeaatthh
•• CCoonnssuulltt aa qquuaalliiffiieedd iinnssttaalllleerr,, sseerrvviiccee aaggeennccyy,,
oorr yyoouurr ddiissttrriibbuuttoorr oorr bbrraanncchh ffoorr iinnffoorrmmaattiioonn
oorr aassssiissttaannccee TThhee qquuaalliiffiieedd iinnssttaalllleerr oorr
aaggeennccyy mmuusstt uussee ffaaccttoorryy––aauutthhoorriizzeedd kkiittss oorr
aacccceessssoorriieess wwhheenn mmooddiiffyyiinngg tthhiiss pprroodduucctt
•• RReeffeerr ttoo tthhee iinnddiivviidduuaall iinnssttrruuccttiioonnss ppaacckkaaggeedd
wwiitthh tthhee kkiittss oorr aacccceessssoorriieess wwhheenn iinnssttaalllliinngg
•• FFoollllooww aallll ssaaffeettyy ccooddeess
•• WWeeaarr ssaaffeettyy ggllaasssseess,, pprrootteeccttiivvee ccllootthhiinngg,, aanndd
wwoorrkk gglloovveess
•• UUssee qquueenncchhiinngg ccllootthh ffoorr bbrraazziinngg ooppeerraattiioonnss
•• HHaavvee ffiirree eexxttiinngguuiisshheerr aavvaaiillaabbllee
•• RReeaadd tthheessee iinnssttrruuccttiioonnss tthhoorroouugghhllyy aanndd
ffoollllooww aallll wwaarrnniinnggss oorr ccaauuttiioonnss iinncclluuddeedd iinn
lliitteerraattuurree aanndd aattttaacchheedd ttoo tthhee uunniitt
•• CCoonnssuulltt llooccaall bbuuiillddiinngg ccooddeess aanndd NNaattiioonnaall
EElleeccttrriiccaall CCooddee ((NNEECC)) ffoorr ssppeecciiaall
rreeqquuiirreemmeennttss
DDAANNGGEERR
CCAARRBBOONN MMOONNOOXXIIDDEE PPOOIISSOONNIINNGG
HHAAZZAARRDD!!
SSppeecciiaall wwaarrnniinngg ffoorr iinnssttaallllaattiioonn ooff ffuurrnnaacceess oorr aaiirr
hhaannddlliinngg uunniittss iinn eenncclloosseedd aarreeaass,, ssuucchh aass ggaarraaggeess,,
uuttiilliittyy rroooommss oorr ppaarrkkiinngg aarreeaass CCaarrbboonn mmoonnooxxiiddee
pprroodduucciinngg ddeevviicceess ((ssuucchh aass aann aauuttoommoobbiillee,, ssppaaccee
hheeaatteerr,, ggaass wwaatteerr hheeaatteerr,, eettcc )) sshhoouulldd nnoott bbee
ooppeerraatteedd iinn eenncclloosseedd aarreeaass ssuucchh aass uunnvveennttiillaatteedd
ggaarraaggeess,, uuttiilliittyy rroooommss oorr ppaarrkkiinngg aarreeaass bbeeccaauussee ooff
tthhee ddaannggeerr ooff ccaarrbboonn mmoonnooxxiiddee ((CCOO)) ppooiissoonniinngg
rreessuullttiinngg ffrroomm tthhee eexxhhaauusstt eemmiissssiioonnss IIff aa ffuurrnnaaccee
oorr aaiirr hhaannddlleerr iiss iinnssttaalllleedd iinn aann eenncclloosseedd aarreeaa ssuucchh
aass aa ggaarraaggee,, uuttiilliittyy rroooomm oorr ppaarrkkiinngg aarreeaa aanndd aa
ccaarrbboonn mmoonnooxxiiddee pprroodduucciinngg ddeevviiccee iiss ooppeerraatteedd
tthheerreeiinn,, tthheerree mmuusstt bbee aaddeeqquuaattee vveennttiillaattiioonn
ddiirreeccttllyy ttoo oouuttssiiddee TThhiiss vveennttiillaattiioonn iiss nneecceessssaarryy ttoo
aavvooiidd tthhee ddaannggeerr ooff CCOO ppooiissoonniinngg wwhhiicchh ccaann ooccccuurr
iiff aa ccaarrbboonn mmoonnooxxiiddee pprroodduucciinngg ddeevviiccee ccoonnttiinnuueess
ttoo ooppeerraattee iinn tthhee eenncclloosseedd aarreeaa CCaarrbboonn mmoonnooxxiiddee
eemmiissssiioonn ccaann bbee ((rree))cciirrccuullaatteedd tthhrroouugghhoouutt tthhee
bbuuiillddiinngg iiff tthhee ffuurrnnaaccee oorr aaiirr hhaannddlleerr iiss ooppeerraattiinngg
iinn aannyy mmooddee CCOO ccaann ccaauussee sseerriioouuss iillllnneessss
iinncclluuddiinngg ppeerrmmaanneenntt bbrraaiinn ddaammaaggee oorr ddeeaatthh
IImmppoorrttaanntt:: All phases of this installation must conform
to ATIO AL, STATE A D LOCAL CODES.
If it is required for additional information,
please contact your local distributor.
oottee:: The United States Environmental Protection
Agency (“EPA”) has issued various regulations
regarding the introduction and disposal of
refrigerants introduced into this unit. Failure to
follow these regulations may harm the
environment and can lead to the imposition of
substantial fines. These regulations may vary
due to the passage of laws. A certified technician
must perform the installation and service of this
product. Should questions arise, contact your
local EPA office.
SSAAFFEETTYY PPRREECCAAUUTTIIOONNSS

4MS-SVN084A-EN
Product Introduction 5
Product Dimensions 5
Main Components 6
General Information 6
Dip Switch Configuration 7
Fan Performance Data 8
Pre-Installation Instructions 10
Installation 11
Unit Inspection 11
Location 11
Piping Connections 11
Condensate Removal 13
Ductwork 13
Electrical Installation 13
Electric Heater 16
Installation Check and Trial Run 17
Checking Items after Installation 17
Trial Run 17
Common Malfunction and Corrective
Action 18
Maintenance 19
Drain Pipe 19
Parts Replacement 19
After-Sales Service 19
Table of Contents

MS-SVN084A-EN 5
Product Introduction
Product Dimensions
Unit: inch(mm)
Model
Dimension
W D H A B
4MXA2024A10NUA
4MXA2036A10NUA 21-1/4(540) 21-1/4(540) 48-1/4(1224) 11-5/8(295) 20(508)
4MXA2048A10NUA
4MXA2060A10NUA 24-3/4(630) 21-1/4(540) 57(1448) 11-5/8(295) 20(508)

6MS-SVN084A-EN
Main Components
eneral Information
Model Cooling Capacity(ton) Optional Electric Heater (kW)
4MXA2024A10NUA 2.0 5/8/10
4MXA2036A10NUA 3.0 5/8/10
4MXA2048A10NUA 4.0 10/15/20
4MXA2060A10NUA 5.0 10/15/20
Model
Motor @ 230V ~, 60Hz
HP FLA
4MXA2024A10NUA
4MXA2036A10NUA 1/2 2.1
4MXA2048A10NUA
4MXA2060A10NUA 1 3.2
Model Filter Size - inch (mm)
4MXA2024A10NUA
4MXA2036A10NUA 19.29 x 20.31 x 0.59 (490 x 516 x 15)
4MXA2048A10NUA
4MXA2060A10NUA 20.67 x 20.31 x 0.59 (525 x 516 x 15)
Notes:
• Based upon W/nominal tonnage, dry coil and filter should be installed.
• Use 0.96 as approximate SCFM correction factor for wet coil.
PPrroodduucctt IInnttrroodduuccttiioonn

MS-SVN084A-EN 7
Dip Switch Configuration
Set the indoor fan speed through the eight dip switches
of the indoor main control board The higher the level,
the higher the speed of the indoor unit fan
Below are the operation instructions:
1 Complete the dip switch settings before applying
power to the unit
2 After the unit is shut down or stopped at the
temperature setpoint, the indoor unit will delay for
a few minutes and then shut down
During installation and checkout, pay attention to
whether the temperature controller has set the fan
delay and shutdown time If the temperature controller
has been set, the actual delay and shutdown time of
the fan is equal to the temperature controller setting
time plus the fan delay time of the indoor unit
Model Level Heat (SA2) Cool (SA1)
4MXA2024A10NUA
Level 1 1 0 0 0 0 0 0 0
Level 2 1 0 0 1 0 0 0 0
Level 3 1 0 1 0 0 0 0 0
Level 4-Default 1 0 1 1 0 0 0 0
Level 5 1 1 0 0 0 0 0 0
Level 6 1 1 0 1 0 0 0 0
Level 7 1 1 1 0 0 0 0 0
Level 8 1 1 1 1 0 0 0 0
4MXA2036A10NUA
Level 1 0 0 0 0 0 0 0 0
Level 2 0 0 0 1 0 0 0 0
Level 3 0 0 1 0 0 0 0 0
Level 4-Default 0 0 1 1 0 0 0 0
Level 5 0 1 0 0 0 0 0 0
Level 6 0 1 0 1 0 0 0 0
Level 7 0 1 1 0 0 0 0 0
Level 8 0 1 1 1 0 0 0 0
4MXA2048A10NUA
Level 1 1 0 0 0 0 0 0 0
Level 2 1 0 0 1 0 0 0 0
Level 3 1 0 1 0 0 0 0 0
Level 4-Default 1 0 1 1 0 0 0 0
Level 5 1 1 0 0 0 0 0 0
Level 6 1 1 0 1 0 0 0 0
Level 7 1 1 1 0 0 0 0 0
Level 8 1 1 1 1 0 0 0 0
4MXA2060A10NUA
Level 1 0 0 0 0 0 0 0 0
Level 2 0 0 0 1 0 0 0 0
Level 3 0 0 1 0 0 0 0 0
Level 4-Default 0 0 1 1 0 0 0 0
Level 5 0 1 0 0 0 0 0 0
Level 6 0 1 0 1 0 0 0 0
Level 7 0 1 1 0 0 0 0 0
Level 8 0 1 1 1 0 0 0 0
Note: 0 means dip switch to ‘on’, 1 means dip switch to number.
PPrroodduucctt IInnttrroodduuccttiioonn

8MS-SVN084A-EN
Fan Performance Data
External static pressure should stay within the
minimum and maximum limits shown in the table
below in order to ensure proper operation of both
cooling, heating, and electric heating operation
Model 4MXA2024A10NUA
Level
Static Pressure (inches W.C.)
0 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Speed 1(CFM) 1030 900 840 — — — — — — — — —
Speed 2(CFM) 1080 960 900 840 — — — — — — — —
Speed 3(CFM) 1220 1120 1060 990 850 — — — — — — —
Speed 4(CFM) 1390 1290 1240 1180 1070 960 — — — — — —
Speed 5(CFM) 1580 1490 1440 1390 1290 1180 1090 970 830 — — —
Speed 6(CFM) 1720 1640 1600 1550 1450 1360 1250 1130 960 — — —
Speed 7(CFM) 1800 1730 1680 1630 1550 1460 1370 1270 1150 970 830 —
Speed 8(CFM) 1850 1820 1790 1740 1660 1580 1500 1410 1340 1200 1080 930
Model 4MXA2036A10NUA
Level
Static Pressure (inches W.C.)
0 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Speed 1(CFM) 1150 1050 950 880 - - - - - - - -
Speed 2(CFM) 1200 1100 1000 940 850 - - - - - - -
Speed 3(CFM) 1380 1260 1200 1100 950 - - - - - - -
Speed 4(CFM) 1550 1460 1390 1310 1160 1010 830 - - - - -
Speed 5(CFM) 1710 1650 1600 1560 1480 1400 1310 1210 1080 930 - -
Speed 6(CFM) 1840 1800 1750 1710 1640 1590 1500 1420 1330 1220 1100 960
Speed 7(CFM) 1870 1830 1810 1800 1760 1690 1620 1520 1440 1350 1250 1150
Speed 8(CFM) 1900 1860 1840 1830 1790 1720 1660 1600 1540 1440 1320 1220
PPrroodduucctt IInnttrroodduuccttiioonn

MS-SVN084A-EN 9
Model 4MXA2048A10NUA
Level
Static Pressure (inches W.C.)
0 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Speed 1(CFM) 1640 1500 1450 1350 - - - - - - - -
Speed 2(CFM) 1680 1560 1500 1380 1300 - - - - - - -
Speed 3(CFM) 1810 1690 1620 1550 1380 - - - - - - -
Speed 4(CFM) 1930 1830 1770 1710 1580 1430 1280 - - - - -
Speed 5(CFM) 2200 2110 2040 1980 1860 1720 1620 1490 1380 - - -
Speed 6(CFM) 2240 2190 2145 2100 2010 1870 1750 1615 1500 1380 - -
Speed 7(CFM) 2280 2240 2200 2180 2130 2080 2000 1880 1750 1600 1420 -
Speed 8(CFM) 2300 2260 2220 2190 2140 2090 2040 1980 1930 1800 1700 1550
Model 4MXA2060A10NUA
Level
Static Pressure (inches W.C.)
0 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Speed 1(CFM) 1660 1540 1470 1400 - - - - - - - -
Speed 2(CFM) 1850 1720 1650 1600 1400 - - - - - - -
Speed 3(CFM) 1920 1800 1730 1650 1480 1315 - - - - - -
Speed 4(CFM) 2110 2000 1950 1860 1760 1640 1490 1325 - - - -
Speed 5(CFM) 2250 2200 2190 2140 2040 1930 1800 1670 1520 1370 - -
Speed 6(CFM) 2260 2220 2200 2170 2090 2010 1910 1760 1650 1550 1430 1380
Speed 7(CFM) 2300 2260 2230 2200 2150 2115 2050 1990 1920 1840 1750 1660
Speed 8(CFM) 2320 2280 2250 2230 2190 2140 2080 2040 2000 1950 1920 1890
Note: Please refer to above table for fan speed selection, and ‘-’ is not allowed to be used.
PPrroodduucctt IInnttrroodduuccttiioonn

10 MS-SVN084A-EN
Pre-Installation Instructions
CChheecckkiinngg PPrroodduucctt RReecceeiivveedd
After receiving the product, please check if there is any
damage caused by transportation Shipping damage is
the responsibility of the carrier Verify the model
number, specifications and accessories are correct
prior to installation
BBeeffoorree IInnssttaallllaattiioonn
Carefully read all instructions for the installation prior
to installing product Make sure each step or procedure
is understood and any special considerations are taken
into account before starting installation Assemble all
tools, hardware and supplies needed to complete the
installation Some items may need to be purchased
locally Make sure everything needed to install the
product is on hand before starting
CCooddeess && RReegguullaattiioonnss
This product is designed and manufactured to comply
with national codes It is installer’s responsibilities to
install the product in accordance with such codes and/
or any prevailing local codes/regulations The
manufacturer assumes no responsibilities for
equipment installed in violation of any codes or
regulations
RReeppllaacceemmeenntt PPaarrttss
When reporting shortages or damages, or ordering
repair parts, give the complete product model and
serial numbers as stamped on the product
Replacement parts for this product are available
through your contractor or local distributor

MS-SVN084A-EN 11
Installation
Unit Inspection
Upon delivery, inspect the unit for damage Any
damage must be reported immediately to the carrier
Do not install such an equipment damaged by freight
which determines the integrity and safety of the unit
Please check the equipment model number to ensure
the unit is appropriately sized for the condensing unit
If an incorrect unit is supplied, it must not be installed
and it is to be returned to the supplier The
manufacturer assumes no responsibility for the
installation of incorrectly delivered units The
evaporator coil contains high-pressure inert gas for
holding charge
Location
WWAARRNNIINNGG
IINNDDOOOORR IINNSSTTAALLLLAATTIIOONN OONNLLYY!!
TThhiiss aaiirr hhaannddlleerr iiss ddeessiiggnneedd ffoorr iinnddoooorr iinnssttaallllaattiioonn
oonnllyy DDoo nnoott iinnssttaallll iitt oouuttddoooorrss
When installing the air handler, take consideration to
minimize the length of refrigerant tubing as much as
possible Do not install the air handler in a location
either above or below the condenser that violates the
instructions provided with the condenser Service
clearance is to take precedence Allow a minimum of
24” in front of the unit for service clearance When
installing in an area directly over a finished ceiling
(such as an attic), an emergency drain pan is required
directly under the unit See local and state codes for
requirements When installing this unit in an area that
may become wet, elevate the unit with a sturdy, non-
porous material In installations that may lead to
physical damage (i e a garage) it is advised to install a
protective barrier to prevent such damage
This air handler is designed for a complete supply and
return ductwork system Do not operate this product
without all ductwork attached
Based upon the actual conditions, if air handler is
installed as Fig A, the air handler should be concealed
in a specific room or space and make sure the air
handler is not accessible to the general public
Based upon the actual conditions, if air handler is
installed as Fig B, make sure that there is enough
space for care and maintenance and the height
between the air handler and ground is above 98 4 in
(2500 mm) And the air handler is not accessible to the
general public The air handler should be maintained at
a 5° angle to ensure smooth drainage
A B
The air handler should be maintained at
a 5° angle to ensure smooth drainage.
Piping Connections
Model
External Diameter inch (mm)
Gas Pipe Liquid Pipe
4MXA2024A10NUA
Φ 3/4 (19) Φ 3/8 (9.5)
4MXA2036A10NUA
4MXA2048A10NUA
4MXA2060A10NUA

12 MS-SVN084A-EN
PPiippiinngg PPrreeppaarraattiioonn
Solder Connection: All cut ends are to be round, burr free, and cleaned. Failure to follow this practice increases the chances for refrigerant
leakage.
Connecting piping
SSccrreeww CCoonnnneeccttiioonn
IInnssttaallllaattiioonn

MS-SVN084A-EN 13
Pipe Diameter inch (mm) Tightening Torque ft-lb (N-m)
Φ1/4 (6.35) 11.06 - 22.13 (15 - 30)
Φ3/8 (9.53) 25.82 - 29.5 (35 - 40)
Φ1/2 (12.7) 33.19 - 36.88 (45 - 50)
Φ5/8 (15.88) 44.25 - 47.94 (60 - 65)
Φ3/4 (19.05) 51.63 - 55.32 (70 - 75)
Φ7/8 (22.23) 59 - 62.69 (80 - 85)
Condensate Removal
1 Condensate drain pipe should be connected into
special drain system for air conditioner
2 The drain pan has primary and secondary drain
connection Condensate removal is performed by
attaching a 3/4” PVC pipe to the evaporator coil pan
and terminated in accordance with local or state
Plumbing/HVAC codes The installation must
include a “P” style trap that is located closely to the
evaporator coil Do not over-tighten the drain
connection in order to prevent possible damage to
the evaporator drain pan See the following figure
for details of a typical condensate line “P” trap
2" (51 mm) minimum
3" (76 mm) minimum
Ductwork
This air handler is designed for a complete supply and
return ductwork system
WWAARRNNIINNGG
SSAAFFEETTYY HHAAZZAARRDD!!
FFiieelldd dduuccttwwoorrkk mmuusstt mmeeeett tthhee NNaattiioonnaall FFiirree
PPrrootteeccttiioonn AAssssoocciiaattiioonn NNFFPPAA 9900AA,, NNFFPPAA 9900BB aanndd
aannyy aapppplliiccaabbllee llooccaall oorrddiinnaannccee SShheeeett mmeettaall
dduuccttwwoorrkk rruunn iinn uunnccoonnddiittiioonneedd ssppaacceess mmuusstt bbee
iinnssuullaatteedd aanndd ccoovveerreedd wwiitthh aa vvaappoorr bbaarrrriieerr
FFiibbrroouuss dduuccttwwoorrkk mmaayy bbee uusseedd iiff ccoonnssttrruucctteedd aanndd
iinnssttaalllleedd iinn aaccccoorrddaannccee wwiitthh SSMMAACCNNAA
CCoonnssttrruuccttiioonn SSttaannddaarrdd oonn FFiibbrroouuss GGllaassss DDuuccttss
DDuuccttwwoorrkk mmuusstt ccoommppllyy wwiitthh NNaattiioonnaall FFiirree
PPrrootteeccttiioonn AAssssoocciiaattiioonn aass tteesstteedd bbyy UU//LL SSttaannddaarrdd
118811 ffoorr CCllaassss II AAiirr DDuuccttss CChheecckk llooccaall ccooddeess ffoorr
rreeqquuiirreemmeennttss oonn dduuccttwwoorrkk aanndd iinnssuullaattiioonn
• Duct system must be designed within the range of
external static pressure the unit is designed to
operate against It is important that the system
airflow be adequate Make sure supply and return
ductwork, grills, special filters, accessories, etc are
accounted for in total resistance See fan
performance data in this manual
• Do not operate the unit without all ductwork
completed
• Do not operate this product without all ductwork
attached
• Inadequate ductwork that restricts airflow can result
in improper performance and compressor or heater
failure Ductwork is to be constructed in a manner
that limits restrictions and maintains suitable air
velocity Ductwork is to be sealed to the unit in a
manner that will prevent leakage
•RReettuurrnn dduuccttwwoorrkk:: Do not terminate the return
ductwork in an area that can introduce toxic or
objectionable fumes/odors into the ductwork The
return ductwork is to be introduced into the air
handler bottom (up flow configuration)
•RReettuurrnn AAiirr FFiilltteerrss:: Each installation must include a
return air filter This filtering may be performed at
the air handler or externally such as a return air
filter grille
Electrical Installation
RReeqquuiirreemmeenntt aanndd NNoottiiccee oonn EElleeccttrriiccaall IInnssttaallllaattiioonn
The electrical installation for the air handler should
observe the following requirements:
1 The electrical installation must be conducted by
trained personnel and done according to the
National Electric Code in addition to local rules and
regulations The electric circuit must be equipped
with a circuit breaker with sufficient capacity
2 The unit’s operating power must be within the
nominal range stated in the installation manual
Use a dedicated power circuit for the air handler Do
not draw power from another power circuit
3 The air handler circuit should be at least 5 feet (1 5
m) away from any flammable surface
4 Connect wiring by referring to the circuit diagram
labeled on the unit and securely tighten
IInnssttaallllaattiioonn

14 MS-SVN084A-EN
Electrical Parameters
Model Power Supply Minimum Circuit Ampacity
(A)
Maximum Overcurrent
Protection (A)
4MXA2024A10NUA
4MXA2036A10NUA
208/230V-1Ph-60Hz
4
15
4MXA2048A10NUA
4MXA2060A10NUA 8
Notes:
1. Fuse is located on the main board.
2. Circuit breaker and power wiring specifications listed in the above table are determined based on the maximum power input of the
units.
3. Specifications of circuit breaker are based on a working condition where the working temperature is 104° F (40° C). If working
condition changes, please adjust the specifications according to national standards.
4. It is recommended to use AWG 18 wiring for the thermostat. The wiring length is not to exceed 98 feet (30 m).
CCoonnnneeccttiioonn ooff PPoowweerr WWiirriinngg aanndd TThheerrmmoossttaatt WWiirreess
Unit:mm
U
n
i
i
t:
m
m
m
WWAARRNNIINNGG
EElleeccttrriiccaall aanndd FFiirree HHaazzaarrdd!!
Failure to follow this Warning could result
in property damage, serious personal
injury, or death.
•• BBeeffoorree wwoorrkkiinngg,, cchheecckk wwhheetthheerr tthhee iinnddoooorr
uunniitt aanndd tthheerrmmoossttaatt aarree ppoowweerreedd oonn
•• MMaattcchh tthhee tteerrmmiinnaall nnuummbbeerrss aanndd wwiirree ccoolloorrss
wwiitthh tthhee ccoolloorrss iinnddiiccaatteedd iinn tthhee iinnddoooorr uunniitt
WWrroonngg wwiirree ccoonnnneeccttiioonn mmaayy bbuurrnn tthhee
eelleeccttrriiccaall ccoommppoonneennttss
•• CCoonnnneecctt tthhee wwiirreess ffiirrmmllyy ttoo tthhee wwiirriinngg bbooxx
IInnccoommpplleettee iinnssttaallllaattiioonn mmaayy lleeaadd ttoo ffiirree
hhaazzaarrdd
•• GGrroouunndd wwiirree sshhoouulldd bbee ccoonnnneecctteedd
IInnssttaallllaattiioonn
1. For solid wires (as shown below):
a. Use wire cutters to cut off the wire end and then
peel away about 1 in (25 mm) of the insulation
layer
b. Use a screwdriver to unscrew the terminal screw
on the terminal board
c. Use nippers to bend the solid wire into a ring
that fits the terminal screw
d. Form a proper ring and then put it on the
terminal board Use a screwdriver to tighten up
the terminal screw
2. For strand wires (as shown below):
a. Use wire cutters to cut off the wire end and then
peel away about 3/8 in (10 mm) of the insulation
layer
b. Use a screwdriver to unscrew the terminal
screw on the terminal board.
c. Use a round terminal fastener or clamp to fix
the round terminal firmly on the peeled wire
end.
d. Locate the round terminal conduit. Use a
screwdriver to replace it and tighten up the
terminal screw (as shown below).

MS-SVN084A-EN 15
Table 1. Wires of Indoor Unit (Only for air handler without electric heater)
Thermostat
NOTE: Suggest using thermostat TCONT824AS52DB.
ootteess::
• Y means Compressor control signal for the
outdoor unit;
B which is energized under the heating
mode means 4-way valve control signal;
D means defrosting signal;
R means 24V AC power supply;
C means 24V common;
G means indoor unit fan signal for the
indoor unit;
W1 means heater control signal.
• For cooling only unit, there is no need to
connect the B and D terminals.
• When outdoor defrosts, D of outdoor unit
will send 24V signal.
WWAARRNNIINNGG
WWIIRRIINNGG IINNFFOORRMMAATTIIOONN!!
•• HHiigghh aanndd llooww vvoollttaaggee wwiirreess sshhoouulldd bbee rroouutteedd
tthhrroouugghh ddiiffffeerreenntt ooppeenniinnggss ooff tthhee eelleeccttrriicc
bbooxx ccoovveerr
•• UUssee ssccrreewwss ttoo ttiigghhtteenn uupp tthhee tthheerrmmoossttaatt
wwiirreess aanndd ppoowweerr wwiirriinngg ooff uunniitt oonn tthhee
tteerrmmiinnaall bbooaarrdd WWrroonngg ccoonnnneeccttiioonn mmaayy lleeaadd
ttoo ffiirree hhaazzaarrdd
•• GGrroouunndd tthhee uunniitt tthhrroouugghh ccoonnnneeccttiinngg tthhee
ggrroouunndd wwiirree
•• TThhee uunniittss sshhoouulldd ccoommppllyy wwiitthh aapppplliiccaabbllee
llooccaall aanndd nnaattiioonnaall rruulleess aanndd rreegguullaattiioonnss oonn
ppoowweerr ccoonnssuummppttiioonn
•• WWhheenn ccoonnnneeccttiinngg tthhee ppoowweerr wwiirriinngg,, mmaakkee
ssuurree tthhee pphhaassee sseeqquueennccee ooff tthhee ppoowweerr ssuuppppllyy
mmaattcchheess wwiitthh tthhee ccoorrrreessppoonnddiinngg tteerrmmiinnaallss,,
ootthheerrwwiissee tthhee ccoommpprreessssoorr wwiillll ggeett rreevveerrsseedd
aanndd ooppeerraattee aabbnnoorrmmaallllyy
IInnssttaallllaattiioonn

16 MS-SVN084A-EN
Electric Heater
The air handlers listed in this manual do not have
factory installed electric heat Electric heat is available
as an accessory Please refer to installation instructions
provided with heater kit for the correct installation
procedure
IImmppoorrttaanntt:: The electrical characteristics of the air
handler, the electric heater kit, and the
supply power should be identical. This air
handler does not have factory installed
electric heater. Electric heater is available
as an accessory. If installing this option, the
only heater kits that can be used are the
series as indicated below.
WWAARRNNIINNGG
WWAARRNNIINNGG!!
IInnssuurree tthhaatt tthhee ffaann iiss rruunnnniinngg dduurriinngg eelleeccttrriicc hheeaatt
ooppeerraattiioonn AAllssoo mmaakkee ssuurree tthhaatt tthhee eelleeccttrriicc hheeaatt iiss
ttuurrnneedd ooffff bbeeffoorree tthhee ffaann ttuurrnnss ooffff ttoo aavvooiidd aann
uunnssaaffee ccoonnddiittiioonn
EElleeccttrriicc HHeeaatteerr KKiittss AAvvaaiillaabbllee
Description Ref. air handler use(ton)
5kW heat strip 2.0/3.0
8kW heat strip 2.0/3.0
10kW heat strip 2.0/3.0/4.0/5.0
15kW heat strip 4.0/5.0
20kW heat strip 4.0/5.0
IInnssttaallllaattiioonn

MS-SVN084A-EN 17
Installation Check and Trial Run
Checking Items after Installation
Items to be checked Problems might happen due to improper installation Check
Check if the unit has been installed correctly. The unit might vibrate or emit noise.
Check if the unit has passed the leakage test. May cause cooling (heating) capacity loss.
Check if the unit has been insulated properly. It may cause condensation.
Check if the condensate drains freely. It may cause water damage from condensate.
Check if the power voltage matches the nameplate. Electrical damage to components may occur.
Check if the wiring has been installed correctly. Electrical damage to components may occur.
Check if the unit has been grounded properly. Electrical damage to components may occur.
Check if the wiring is the correct wire gage. Electrical damage to components may occur.
Check if there is any obstruction blocking the air inlet/outlet. Cooling (heating) capacity will be affected.
Make sure that supply and return ducts are properly
connected.
Air leakage, vibration and noise may result if not connected
properly.
Trial Run
PPrreeppaarraattiioonn ffoorr TTrriiaall RRuunn
1 Never power on the unit until all the installation
work has been done
2 All the control circuit and wiring has been
connected correctly and is secure Valves on the
gas and liquid line should be completely open
3 Check if the unit appearance and piping system has
been damaged during installation
4 Check if the terminals are loose and the phases are
correct
TTrriiaall RRuunn
1 Trial run should be done by trained personnel only
after above items have been checked
2 Power on the unit
3 Check that the unit operates as expected

18 MS-SVN084A-EN
Common Malfunction and Corrective Action
If the unit doesn’t run normally, check the following items:
Phenomenon Reason Treatment
The unit can not be started.
The unit isn't connected to power. Connect with power supply.
Low voltage. Check if circuit voltage is within nameplate
voltage.
Fuse broken or breaker trips off. Replace fuse or connect breaker.
The unit operates but stops immediately. Air inlet/outlet of indoor unit is blocked. Remove obstruction.
Abnormal cooling or heating.
Air inlet/outlet of indoor unit is blocked. Remove obstruction.
Inappropriate temperature setting. Adjust setting at thermostat.
Filter is blocked by dirt. Clean or replace the filter.
Note: If reasons are still unclear after checking above items, please contact authorized service center for assistance.
Following circumstances are not malfunction:
“Malfunction” Reason
Unit doesn’t run.
Unit won't start immediately after it shuts
down.
There is a 3 minute time delay before the unit
can restart.
When power is initially turned on. Unit is in standby mode for about 1 minute.
Indoor unit still runs after thermostat is
satisfied.
Indoor unit fan continues to run after
thermostat is satisfied.
Indoor fan can be set to "ON" or "AUTO"
mode. In the "ON" mode, the fan runs
continuously.
There are LED indicators on the main board of the indoor unit, which are used to display the operating status and malfunction information of the
unit.
LED indicator Color Function
Power Indicator Red Indoor unit main board is powered on, Power
Indicator is on.
Running Indicator Green
After detecting the indoor fan run signal, the
running indicator light is on, when there is no
indoor fan signal, the running indicator light is
off. When detecting a system failure, the
running indicator light flashes.
Different running indicator flashing light means different system failure.
Malfunction Running Indicator status Remark
Indoor Jumper cap failure Light out 3 seconds then flashes once
Flashing means light on 0.5 seconds and then
off 0.5 seconds.
Indoor fan failure Light out 3 seconds then flashes twice
Indoor tube temperature sensor failure Light out 3 seconds then flashes four times
Indoor air outlet temperature sensor failure Light out 3 seconds then flashes six times

MS-SVN084A-EN 19
Maintenance
This product is designed for dependable service;
however, periodic maintenance should be scheduled
and conducted by trained professional service
personnel This service should be conducted at least
annually, and should include testing and inspection of
electrical and refrigerant components
1 The system air filter(s) should be inspected, cleaned
or replaced at least monthly
2 Make certain that the access panels are replaced
and secured properly before placing the unit back in
operation
3 The heat transfer surface should be cleaned
4 The blower motor is permanently lubricated for
normal operating conditions
Drain Pipe
Regularly check to see if the drain pipe is clogged in
order to ensure drain condensate doesn't overflow and
cause water damage
Parts Replacement
Purchase parts from the installing or servicing dealer if
necessary
oottee:: During leakage testing, never mix oxygen,
ethyne (acetylene) or other dangerous gases into
the refrigeration circuit. itrogen should be used
for leakage testing.
After-Sales Service
In the event you have problems with the unit or require service, please contact your local installing / servicing dealer

About Trane and American Standard Heating and Air Conditioning
Trane and American Standard create comfortable, energy efficient indoor environments for residential applications For
more information, please visit www trane com or www americanstandardair com
The AHRI Certified mark indicates company participation in the AHRI Certification program For verification of individual certified products, go to ahridirectory org
The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice We are committed to
using environmentally conscious print practices
MS-SVN084A-EN 14 Apr 2022
Supersedes (New) ©2022