Trane XL19i-APG02-EN User guide

Application Guide
XL19i-APG02-EN
Low Outdoor Operating Temperature
UnitMounting
MinimumClearances
RefrigerantPipingLimitations
Trane XL19iheat pumps and cooling units

ThepurposeofthisbulletinistoprovidecumulativeapplicationcriteriaasrelatedtotheTraneXL19i
coolingunitsandheatpumps.
Thisbulletindiscusses:
I. OffSeasonCoolingOperation
II. UnitMounting
III. MinimumOperatingClearances
IV. RefrigerantPipingLimitations
ISSUEDBY:
ProductTrainingandApplicationDepartment
Trane
Tyler,Texas Pg. 2

Section I - Off Season Cooling Operation
TheTraneXL19imaybeoperated in thecooling modeto 45oFas shipped fromthe factory.Theseunits
shallonly bematchedwithvariablespeedairhandling units andvariablespeedfurnace/coilcombinations.
Thecoilshavefactorysupplied non - bleedTXV’s
Pleaserefertotheaccessorytable below when determining iftheXL19iwilloperateatthe specified
conditionsaswellasrequiredaccessories.
ERUTAREPMETDO@SEIROSSECCADERIUQER
ledoM54
0
F04/03
0
F0
0
F
i91LX deppihSsACDE toN devorppA
EvaporatorDefrostControlKits (EDC)
Pg.3
AY28X079-Coolingonly
AY28X084 -Heat pumps
TheTraneXL19iisfactorysuppliedwith compressor crankcase heat
CompressorCrankcaseHeaterKit- BAYCCHT
CompressorHardStartKits- BAYKSKT
XL19i’sarefactorysuppliedwith compressor startcomponents.

Typicalwiringwhenusingtheevaporatordefrost control (EDC) for operation asspecifiedon page 3.
CoolingSplitSystemandAY28X079EvaporatorDefrostControl
R
Y1
Y2
G
W
W2
B
Red (R)
Y
YLow
Green (G)
White(W1)
White(W2)
White(W3)
Blue (B)
Orange(O)
R
Y2
Y1
G
W1
X2
B
O
EDR-1
EDC
EDR
Y1
Red (R)
Ylow
Green (G)
White(W1)
White(W2)
White(W3)
Blue (B)
EDC
HeatPumpSplitSystem andAY28X084EvaporatorDefrostControl
2TTZ9 TWE-E Thermostat
TWE-E
Pg.4
B
R
Y
Y
Red
Yellow/Red
Yellow
X2
Blue
Orange
Thermostat
XT500C
2TWZ9
This diagram indicates the correct wiring for the evaporator defrost control. Refer to the installation manual for complete control wiring.

SECTIONII- UnitMounting:
Thissection describes appropriate methods for mounting andsecuringtheXL19i.However,iftheseunits
areto be mounted ina regionwhere highwinds arean issue, pleaserefer totheTraneBAYECMT001
extremeconditions mountingkit.Ifseizmicrestraint isrequired,pleasereferlocalcode authority.This
applicationmayrequirealocal P.E.’sapprovalandstamp.
Whenmounting orsecuringtheTranecondensing unitsandheatpumpspleaseobservethe following.
1. Anytimethe unitistobesupportedfrom theedge,thesupportingmaterialshall extendminimumtwo
inchesundertheperimeteroftheunit’s base.
2. The mounting hole locations aremoldedinthebasepan,however,they must bedrilledthrough.
a)Holelocationsare identified on page6.
b)Holediameteris 5/16”
3. Washersshouldbe placed inbetween thefastenerhead and thebasepan.
4. Tranerecommendssupportingthecenteroftheunit.
5. Base 3 and4 pans have fourmounting holes.
Referto thedimensiontablesforactualunitsize.
Pleaserefertothefollowingillustrationsfordimensionsandgeneralinformation.
Drawingforillustrationpurposesonly.
Pg.5

BASEPANMOUNTINGHOLELOCATIONS
(location only,holes mustbe drilled)
support must extend 2” from the basepan perimeter
support center of unit
If supporting the base pan from the perimeter, the support must extend under the base pan at least 2”. Trane recom-
mends supporting the middle of the base pan with a cross member.
Pg. 6

Section III - Minimum Operating Clearances
Thissection discusses applying acondensingunit/heatpumpininstallationswherethere are space
constraints.
Theseconcernsmust be addressed:
1.SystemOperation - Adequate airflowmust beprovided to thecondensing unit /heat pumpin order
toenableappropriateheattransfer. If this is accomplished, head pressure will remainataneffective
operatingrange.
2.SystemServicability- Proper spacemust be allowed forHVACservicetechnicianto properly
maintainthe condensing unit / heat pump. Furthermore, space must be allowed for major component
changeoutintheeventof a failure.Workingspace is determinedby the National Electric Code
3.SpaceMaintenance - Appropriatearea mustbe allowedin ordermaintain theground areawhere the
unitsare positionedtoprohibitdebrisfromcollectingonthe panels, thusfurtherprovidingunobstructed
airflowtothecondensingunit.
4.State,Local Codes, andNational Codes shallprevail. Check withthe local jurisdictionbefore
installationtoassurecompliance.
Numerousprojectsrequire reduced clearancesbetween outdoor unitsand adjacent walls,fences andother
units.Theobstructioninquestionisusuallyoneofthefollowing:
1. Deck.
2.Oneormore walls of anadjacent building.
3.Fencesorbarriersprovided to reduce sound transmissionor visually screen the equipment.
4.Otheroutdoorunitsinamulti-unitinstallation.
5.Acombination of the above.
Theprimeconsiderationsinvolvedinestablishingminimumclearancesare:
1.Adequateairflowtothe outdoorcoilwithminimumrecirculation.
2.Service access tothe equipment.
3.Compliancewiththe National Electric Codeand other applicablecodes.
4.Designtemperature-Designtemperaturesgreaterthan105Frequireadditional consideration.
I.In order toassure thatadequate airflowreaches theXL19i condensingunit, sizefree airpassages at300
feetperminutevelocity(FPM).Seecondensingunitairflowperformanceonpage16of this document; or,
forthe mostcurrentinformation,consulttheunit’s productdatamanual.
II.The importance of providingproper service access toequipment cannot be overemphasized.The HVAC
servicetechnician’s job may beperformed with greater easeif adequate service spaceis allowed.
III.Knowledgeof the NationalElectric Codeand other applicablecodes forthe job sightlocation isa
necessityinorder to satisfy localinspectors.Thesecodes are inplace for serviceas well assafety.
IV.Besuretoread all provisions and footnotes containedinthis document.When ambient temperatures
exceed105F, morespace may be required forminimum operating clearances.
Pg. 7

A. Installationof singleXL19i unitundera deck.
1. SingleXL19iunits maybeinstalledunderadeckprovinding thefollowingcriteriaismet:
a) 3feetminimumtopclearanceisprovided.
b) 3feet away fromobstructionssuch as awall,or shrubbery ontwosides.
c) Theothertwo sides leftunobstructed.
d) Deckingmaterialoverhangingtheunit not to exceedtwofeet on two sides.
e) Servicability-Adequatespaceprovidedforannualserviceandmaintenance.NationalElectric
Code(NEC)requiresminimum3feetserviceclearanceforpersonnel safety.This distance may be
increasedundercertainconditions.PleaserefertothemostcurrenteditionoftheNationalElectric
Codefor more information.Page15of this documentcontainssomeNECinformation.
f) Condensingunitshallbeset onfirmfoundationindependent frombuildingstrucutre,not directly
ongroundsurface. (Photo below forillustration purposesonly)
g) Consultwithlocalbuildingdepartmenttoassuretheinstallationwillcomplywithlocalcode
beforeinstallingtheequipment.
Pg. 8
Illustrations provided to designate required clearances. Trane recommendeds mounting the unit on a pad
that is independent of the structure. Reference section III.A.1.F on pg 8 of this document.

3’ Minimum clearance from 2 sides of unit to walls
2’ feet maximum
overhang from
side of unit to deck.
3’ minimum
from top of
unit to deck
Outdoor Unit
SIDEVIEW
FrontView
3’ minimum from
side of unit to
wall of home
Outdoor Unit
2’ maximum
deck overhang
to side of unit
Illustrations provided to designate required clearances
Pg. 9

Wall of home
Patio Edge
Deck Edge
2’ Maximum overhang
from side of unit to
edge of deck
2’ Maximum overhang
from side of unit to
edge of deck
3’ Minimum Clearance
from side of unit to
wall of structure
Outdoor Unit
Outdoor wall
of home
Deck Edge
TOPVIEW
ISOMETRICVIEW
Pg. 10
Illustrations provided to designate required clearances. Trane recommendeds mounting the unit on a pad
that is independent of the structure. Reference section III.A.1.F on Pg 8 of this document.