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.

2. SingleXL19i condensingunit/ heatpump inacornerwithunrestrictedtopclearance
A) Forlocations where the design ambienttemperatureisbelow 105F:
1)1.5feetclearancefrombothwalls.
2)Othertwosides left unrestricted
B) For locationswhere the design ambient temperatureexceeds 105F:
1)2.0feet clearance fromboth walls.
2)Othertwosides left unrestricted.
C) If unit is located in such a waythatservicepanelisfacingthewall
1)NEC requires minimum 3 feet between the unit and the wall
a)This spacemay beincreased to 31/2 feet. Consultthe National ElectricCode for more
informationregardingminimumclearancesforworking spaces.
3. Installationof twoormoreXL19iunitswheretwoadjacent wallsformacorner.
A) Forlocations where the design ambienttemperatureisbelow 105F:
1)Cornerunitshallhave1.5feetclearancefrombothwalls.
2)3.0feet clearance inbetween units. (if servicepanels face eachother,thisclearance may be
increased to 4.0 feet per NEC)
3)2.0feet clearance fromother sideto anyobstruction
B) Forlocations wherethe designambient temperatureexceeds 105F:
1)2.0feet clearance fromboth walls.
2)3.0feet clearance inbetween units. (if servicepanels face eachother,thisclearance may be
increased to 4 feet per NEC)
3)2.0feet clearance fromother sideto anyobstruction.
C) If unit’sare locatedinsuch a way that theservicepanels are facing the wall
1)NECrequiresminimum3.0feetbetweentheunitandthewall
a)Thisspace maybe increasedto3 1/2 feet.Consult the mostcurrent editionofthe National
ElectricCodeformoreinformationregardingminimumclearancesforworkingspaces.
SERVICE ACCESS PANEL SIDE
Service Panel
Service Panel
-1.5’-
min
-1.5’-
min
-1.5’-
min
-1.5’-
min
-1.5’-
min
-1.5’-
min
-1.5’-
min
-1.5’-
min -3.0’-
min -3.0’-
min
Pg. 11

4. SingleXL19i condensingunit/ heatpumpin afencedcornerwith unrestrictedtopclearance
A) Forlocations where the design ambienttemperatureisbelow 105F:
1)1.5feetclearancefrombothwalls.
2)2.0 feet fenceclearance -openingsshall be providedto allowfreeair passage tounit.( Free air
passageshall be sized@ 300FPMVelocity)
3)Serviceaccessshall be 3.0 feet minimum
B) For locationswhere the design ambient temperatureexceeds 105F:
1)2.0feet clearance fromboth walls.
3)3.0feet clearance fromfence. openingsshall beprovided toallow freeair passageto unit. (Free
airpassage shall besized @300 FPMVelocity)
2)Serviceaccessshallbe3.0feetminimum.
C) If unit is located in such a waythatservicepanelisfacingthewall
1)NECrequires minimum 3 feet between the unit and the wall
a)This spacemay beincreased to 31/2 feet. Consultthe National ElectricCode for more
informationregardingminimumclearancesforworking spaces.
Service Panel
Service Panel
-1.5’-
min
-1.5’-
min
-1.5’-
min
-1.5’-
min
12345
12345
12345
12345
123
1
2
3
1
2
3
1
2
3
123
123
1
2
3
1
2
3
123
12345
12345
1234
1234
12
12
12
12
12
12
12
12
12
-2.0’-
min
-3.0’-
min -2.0’-
min
-3.0’-
min
1234
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1234
SIngle Unit - Solid Fence
Solid Fence: Fence height not to exceed top of unit. Provide openings in fence that will allow maximum 300 FPM air velocity.
These openings shall be located at the lower portion of the fence. If acceptable, the lower portion of the fence may be cut to
provide open bottom clearance provided that debris, grass and vegetation will not obstruct air passageway.
* If removable panels are used and acceptable to local inspection agency, the clearance to the removable
panel may be reduced to 2.0 feet
1234567
1
23456
7
1234567
opening size @
300FPMmaximum
velocity
Pg12

1234
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1
23
4
1234
MultipleUnits SolidFence
* If removable panels are used and acceptable to local inspection agency, the clearance to the
removable panel may be reduced to 2.0 feet
1234567
1234567
123456
123456
opening size @
300FPMmaximum
velocity
SERVICE ACCESS PANEL SIDE*
-2.0’-
min
-2.0’-
min
-2.0’-
min
-1.5’-
min -3.0’-
min -3.0’-
min
5. Installationof twoormoreXL19i unitswheretwoadjacent wallsforma fenced corner
A) Forlocationswherethe designambienttemperatureis below105F:
1)Cornerunitshall have1.5 feet clearance fromone wall and 2.0feet clearance from theother wall.
2)3.0feet clearance in betweenunits.
3)NEC requires 3feet clearancefor service.Thismay be reducedto 2.0feet ifremovable panels
areused.
4)Freeair passage shall becut in orderto allow maximum200 FPM airvelocity
B) Forlocations wherethedesign ambienttemperatureexceeds 105F:
1)Cornerunit shall have 2.0feet clearance fromone walland 2.5 feetclearance from theother
wall.
2)3.5feet clearance in betweenunits.
3)NEC requires 3feet clearancefor service.Thismay be reducedto 2.5feet ifremovable panels
areused.
C) If unit’s are located in such a way that the service panels are facing the wall
1)NECrequiresminimum3.0feetbetweentheunitandthewall
a)Thisspace maybe increasedto3 1/2feet. Consultthemost currentedition oftheNational
ElectricCodeformoreinformationregardingminimumclearancesforworkingspaces.
Solid Fence: Fence height not to exceed top of unit. Provide openings in fence that will allow maximum 300 FPM air velocity. These
openings shall be located at the lower portion of the fence. If acceptable, the lower portion of the fence may be cut to provide open
bottom clearance provided that debris, grass and vegetation will not obstruct air passageway.
-3.0’-
min
-3.0’-
min
-3.0’-
min
-1.5’-
min
1234
1234
12345
12345
12345
12345
12
12
12
12
12
12
12
12
12
Pg13

66
22-3237-02
UNIT
12" MIN.
2 1/2" MIN.
UNIT
12" MIN.
UNIT UNIT
SHIELD DESIGN FOR
HIGHLY DIRECTIONAL WINDS
SERVICE
ACCESS
AREA
SEE NOTES
SERVICE
ACCESS
AREA
SEE NOTES
SHIELD DESIGNED FOR
NON-DIRECTIONAL WINDS
REMOVEABLE PANEL
OR GATE
FOR SERVICE
PREVAILING
WIND DIRECTION
SHADOW BOX FENCE
33% MIN. FREE AREA
EACH SIDE
4" MINIMUM
24" MAXIMUM
2" MINIMUM
4" MAXIMUM
SOLID PANEL
Notes:
• Service access working clearance (3 feet) for electrical and refrigerant components must meet NEC Article 110-16
requirements and local codes.
Note:
Minimum working clearance must be in compliance with the National Electric Code. Currently,
the minimum clearance between a wood or suitable grounding material type fence requires
minimum 3 feet. If other material is used to form the windshield, the minimum space may be
increased to 3.5 feet. Please consult the 2002 or current Edition of the National Electric Code,
Article 110 for the most up to date information
D) Fence construction.
1)Heightshallnotexceed the top of theunit.
2)Free air passagesshallbe size atno greaterthan 300 FPMvelocity.
3)Free air passagesshallbe cut atthelower portion ofthefence.
4)Fencemay also beundercut to allowfree air passageprovided grass,vegetation, or debriswill
notobstruct the freeair passage.
5)Shrubberyshallnotbe planted within one footofthe fence.
6)If removable panel is utilized, the distance from the unit’sservicepaneltotheremovablepanel
maybereduced to 2.0feet. (3.0 feetif geographicallocation’sdesign outdoor drybulb isgreater
than 1050F.
E) Windshields:
Iflowambientoperationto30Fisrequired,windshieldsmayberequiredtoblockprevailingwinds
fromimpacting system performanceatlowoutdoortemperatures.
Pg14
1.5’ 1.5’
Shadow Box Fence shall
not exceed unit’s top
height
1.5’ 1.5’

ElectricalCodeInformation
CompliancewithLocal,State,andNational Codes is amuston every HVACInstallation.This page
discussesthe criteria regarding minimum working spaces as definedinthe2002NationalElectricCode.
Themain concern is thesafetyoftheHVAC service/maintenanceperson.Minimumworkingclearances
arespecifiedin the NationalElectric Code(NEC)Article110.26
Forelectricalequipmentthatfrom ground to power thevoltage is 600 volts orless:
TheNational Electric Code specifically statesthatserviceareaaroundelectricalequipmentshallprovide
sufficientaccess,andshallbeproperlymaintainedinordertopermitsafeoperationandmaintenanceofthe
equipment.Table110.26aswellasthefigures beside the table describetheminimum clearance for proper
serviceandaccesstoelectricalequipment.
Traneresidential and light commercial condensingunitsrangingfrom1to6tonrequireaccesstotheside
servicepanelasindicated on theprevious pages to gainaccess to theelectrical controls.
Condition 1
(3 ft min. for 151 - 600 V)
Condition 2
(Space would increase to 3 1/2 ft for 151 - 600 V)
Condition 3
(Space would increase to 4 ft for 151 - 600 V)
Minimum Clear Distance
Condition 1 Condition 2 Condition 3
Nominal
Voltage to
Ground
0-150 900 mm (3 FT) 900 mm (3 FT) 900 mm (3FT)
151-600 900 mm (3FT) 1 M (3.5FT) 1.2 mm (4FT)
Note: Where the conditions are as follows
Condition 1 - Exposed live parts on one side and no live or grounded parts
on the other side of the working space, or exposed live parts on both sides
effectively guarded by suitable wood or other insulating materials. Insulated
wire or insulated busbars operating at not over 300 volts to ground shall not
be considered live parts
Condition 2 - Exposed live parts on one side and grounded parts on the
other side. Concrete, brick, or tile walls shall be considered as grounded.
Condition 3 - Exposed live parts on both sides of the work space (not
guarded as provided in Condition 1) with the operator between.
Table 110.26(A)(1) Working Clearances
The table and figure below are excerpts from the National Electric Code 2002:
Pg. 15
Reprintedwithpermissionfrom NFPA70-2002, National Electrical Code®,Copyright© 2001, National Fire
Protection Association. This reprinted material is not the complete and official position of the NFPA on the
referenced subject, which is represented only by the standard of it’s entirety.
National Electrical Code and NEC are registered trademarks of the National Fire Protection Association, Quincy, MA.
Electric
switchboard
150V nominal
or less
Effectively Insulated
Electric
switchboard
150V nominal
or less
Electric
switchboard
150V nominal
or less
Electric
switchboard
150V nominal
or less
Exposed
Live Parts
Exposed
Live Parts
Exposed
Live Parts
Grounded parts, concrete, etc
3’
3’
3’

elbaTwolfriAtinUroodtuOi91LX
stinUgnilooCstinUpmuPtaeH
rebmuNledoMtinUMFCrebmuNledoMtinUMFC
A0001A0309ZTT25704A0001A0309ZWT25704
A0001A6309ZTT25704A0001A6309ZWT25704
A0001A8409ZTT25704A0001A8409ZWT25704
A0001A0609ZTT25704A0001A0609ZWT25704
Required Opening = CFM / 300 FPM
Example:
Given:
Qtyof 2 unitsin anarea surroundedby afence ontwo sidesand solidwalls onthe othertwosides. Units
are 2TTZ9030A100A’s -
Required:
Determinefreeairopeningspacerequiredinfence -
Solution:
4075CFM X Qty of 2 = 8150 CFM
8150 CFM / 300 FPM = 27.17 square feet
Round27.17to27 square feet offree air openingin the 2 fencesections surrounding theunits.
*TableproducedJan.2003. Forthemostcurrentinformation,pleaserefertospecificequipmentProductData.
Pg. 16

XL19i Unit Dimensions
ledoMtinUesaBABC ledoMtinUeziSesaBABC
A0001A0309ZTT24"8/794"4/173"4/143A0001A0309ZWT24"8/794"4/173"4/143
A0001A6309ZTT24"8/794"4/173"4/143A0001A6309ZWT24"8/794"4/173"4/143
A0001A8409ZTT24"8/794"4/173"4/143A0001A8409ZWT24"8/794"4/173"4/143
A0001A0609ZTT24"8/794"4/173"4/143A0001A0609ZWT24"8/794"4/173"4/143
Pg.17

SectionIV - RefrigerantPiping
A.Purpose
1.Liquid line -Thepurposeoftheliquidrefrigerantlineisto convey refrigerant, intheliquidstate,from
theoutdoorunittotheindoorunitinthe cooling mode and from the indoorunittotheoutdoor unit in the
heatingmode.
2.Gasline-Thepurposeofthe gas line isto convey refrigerantin the gas stateand oil fromthe indoor unit
totheoutdoorunitinthecoolingmodeand from the outdoor unit to theindoorunitin the heating mode.
B. Limitations:
1.The XL19icontains two compressorsthat share thesame refrigeration circuit,however,donot operate
simultaneously.Therefore,it is crucialthatrefrigerantlinesareproperlysizedanddo not exceed thelength
setforthintheunit’sinstallationmanual.
2.Linelengthlimits:
A.Gasline=80feetlinearlength/ofthelinearlength,25feetmaybeinstalledvertical.
B.Liquid line = 80 feetlinearlength/ofthelinearlength,25feetmay be installed vertical.
3.No exceptions shall be allowedtothesepipinglimitations.
C. Explanation:
1.Refrigerantlinesshall not exceed 80feet total linelength. / 25feet of the 80feet may bevertical. .
2.Liquidsubcoolingmaynotbeachievedonfirststageiftheliquidlineexceeds80feet.
3.Oilreturnmaybesacrificedduring first stage operation ifthegas line exceeds 80 feet.
25 Ft. Max
55 Ft. Max
80 Feet Max.
55 Ft. Max
25 Ft. Max
vertical
Pg.18

Pg. 19
NOTES

Trane
6200 Troup Highway
Tyler, TX 75707
http://www.trane.com
Literature Order Number
File Number XL19i-APG02-EN 03/04
Supersedes XL19i-APG01-EN 01/03
Stocking Location
Since Trane has a policy of continuous product improvement, it reserves the right to change
design and specifications without notice