BAC FXV User manual

RIGGING & ASSEMBLY INSTRUCTIONS
Crossflow Coil Products
FXV / FXV3
CXVB / CXVT

Crossflow coil products should be rigged and
assembled as outlined in this bulletin.
Theseproceduresshouldbethoroughlyreviewedpriortothe
actualriggingandassemblyoftheequipmenttoacquaint
allpersonnelwithprocedurestobefollowedandtoensure
thatallnecessaryequipmentwillbeavailablebeforehand.
Ifoutstandingcircumstancesrequireadeparturefromthe
proceduresoutlinedinthismanual,contactyourlocalBAC
Representativeforguidance.
Be sure to have a copy of the certified drawings available for reference. If you
do not have a copy of these drawings, or if you need additional information
about this unit, contact your local BAC Representative whose name and
telephone number are on a label adjacent to the access door. The model
number and serial number of the unit are also located in this area.

Table of Contents
RIGGING & ASSEMBLY INSTRUCTIONS » CROSSFLOW COIL PRODUCTS
1Introduction
3Safety
3Shipping
3Pre-rigging Checks
4Cold Weather Operation
4Location
4Warranties
2Unit Rigging & Assembly
4Rigging
5Section Assembly of Two-Piece Cells
6Section Assembly of Optional Three-Piece Cells
7Section Assembly of Four-Piece Cells
11 ENDURADRIVE®Fan System Installation
3Single Air Intake Unit Optional Accessories
12 Introduction
13 Motor Davit Assembly Installation
14 PCD Hood Assembly
15 Discharge Sound Attenuation Assembly (FXV Only)
16 Intake Sound Attenuation Assembly (FXV Only)
17 External Service Platform Installation
20 External Service Ladder Installation
21 Ladder Safety Cage Installation
22 Internal Platform Ladder Installation
22 Internal Ladder Installation
23 Door Platform

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2
CROSSFLOW COIL PRODUCTS
Introduction
1
Safety
Adequateprecautionsappropriatefortheinstallationandlocationoftheseproductsshould
betakentosafeguardtheequipmentandthepremisesfromdamageandthepublicfrom
possibleinjury.The procedures listed in this manual must be thoroughly reviewed prior to
rigging and assembly. Read all warnings, cautions, and notes detailed in the margins.
Whenthefanspeedoftheunitistobechangedfromthefactorysetspeed,includingthe
useofavariablespeeddevice,stepsmustbetakentoavoidoperatingatornearthefan’s
“criticalspeed”whichcouldresultinfanfailureandpossibleinjuryordamage.Consult
withyourlocalBACRepresentativeonanysuchapplications.
Shipping
FXV,FXV3,CXVB,andCXVTunitsarefactory-assembledtoensureuniformqualitywith
minimumeldassembly.Singleairintakemodelsshipintwosectionspercell(lowerand
upper).Dualairintakemodelsshipinfoursectionspercell(onelowerandthreeupper:
eachcoilsectionshipsseparately)tominimizeriggingandfreightcosts.Contactyourlocal
BACRepresentativeformoreinformation.Forthedimensionsandweightsofaspecicunit
orsection,refertothecertieddrawings.
Pre-Rigging Checks
Whentheunitisdeliveredtothejobsite,itshouldbecheckedthoroughlytoensureall
requireditemshavebeenreceivedandarefreeofanyshippingdamagepriortosigningthe
billoflading.
The following parts should be inspected:
SheavesandBelts
Bearings
BearingSupports
FanMotor(s)
FanGuard(s)
Fan(s)andFanShaft(s)
FloatValveAssembly(s)
WaterDistributionSystem
CoilSurface
ColdWaterBasinAccessories
InteriorSurfaces
ExteriorSurfaces
Louvers/CombinedInletShields
SprayWaterPumps
MatingSurfacesBetweenSections/
Modules
MiscellaneousItems:Allbolts,
nuts,washers,andsealertape
requiredtoassemblesectionsor
componentpartsarefurnishedby
BACandshippedwiththeunit.
Achecklistinsidetheenvelope
attachedtothesideoftheunit
marked“Contractor’sInstallation
Instructions”indicateswhat
miscellaneouspartsareincluded
withtheshipmentandwherethey
arepacked.
WARNING: Failure to use lifting
provisions can result in a dropped
load causing severe injury, death,
and/or property damage. Lifts
must be performed by qualified
riggers following BAC published
Rigging Instructions, and generally
accepted lifting practices. The
use of a supplemental safety
sling may also be required if the
lift circumstances warrant its
use, as determined by the rigging
contractor.
CAUTION: Only personnel qualified
to do so should undertake
operation, maintenance and repair
of this equipment. Proper care,
procedures and tools must be used
in handling, lifting, installing,
operating, maintaining and
repairing this equipment to prevent
personal injury and/or property
damage.

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3
Unit Weights
Beforerigginganyunit,theweightofeachsectionshouldbeveriedfromtheunitcertied
drawing.Unitprintweightsincludethenalassembledunitwithallaccessories.Accessory
weights(foundontherespectivedrawing)canbedeductedfromthetotalweight.
Anchoring
Seven-eighthsinch(7/8”)diameterholesareprovidedinthebottomangeofthebasin
sectionforboltingtheunittothesupportbeams.Refertothesuggestedsupportdrawing
includedinthesubmittalforlocationandquantityofthemountingholes.The unit must
be level for proper operation.Anchorboltsmustbeprovidedbyothers.TheIBCratingis
onlycertiedwithstandardanchoragelocations.Usingalternateanchoragelocationsor
alternatesteelsupportswillvoidanyIBCwindorseismicratings.ContactyourlocalBAC
Representativefordetails.
Cold Weather Operation
Theseproductsmustbeprotectedbymechanicalandoperationalmethodsagainstdamage
and/orreducedeffectivenesswheneveraunitisoperatedinbelowfreezingambient
conditions.PleaserefertotheCrossflow Coil Product Operation and Maintenance Manual
onwww.BaltimoreAircoil.com,orcontactyourlocalBACRepresentativeforrecommended
coldweatheroperationstrategies.
Location
Allevaporativecoolingequipmentmustbelocatedtoensureanadequatesupplyoffresh
airtotheunitairintakes.Whenunitsarelocatedadjacenttowallsorinenclosures,
caremustbetakentoensurethewarm,saturated,dischargeairisnotdeectedand
recirculatedbacktotheairintakes.
Eachunitshouldbelocatedandpositionedtopreventtheintroductionofdischarge
airintotheventilationsystemofanybuilding.FordetailedrecommendationsonBAC
equipmentlayout,seeourwebsiteatwww.BaltimoreAircoil.comorcontactyourlocalBAC
Representative.
Warranties
PleaserefertotheLimitationofWarranties(locatedinthesubmittalpackage)applicableto
andineffectatthetimeofthesale/purchaseoftheseproducts.
Unit Operation
Priortostart-upandunitoperation,refertotheCrossflow Coil Product Operation &
Maintenance Manual shippedwiththeunitandalsoavailableatwww.BaltimoreAircoil.com
Introduction
Safety
Shipping
Pre-Rigging Checks
Unit Weights
Anchoring
Cold Weather Operation
Location
Warranties
ATTENTION: Before an actual lift
is undertaken, ensure no water,
snow, ice, or debris has collected
in the basin or elsewhere in the
unit. Such accumulations will add
substantially to the equipment’s
lifting weight.
NOTE: Each unit must be located
and positioned to prevent the
introduction of discharge air
into the ventilation systems of
the building on which the unit is
located and of adjacent buildings.

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4
Rigging
RefertoTables 1, 2,and3 andFigures 1,6,and7foreachsection’srequiredminimum
spreaderbarlengthW1andW2(ifapplicable)andtherecommendedminimumvertical
dimension“H”.RefertoFigures 1,6,and7fordimensionreference.
Failuretouseliftingprovisionscanresultinadroppedloadcausingsevereinjury,death,
and/orpropertydamage.LiftsmustbeperformedbyqualiedriggersfollowingBAC
publishedRiggingInstructions,andgenerallyacceptedliftingpractices.Theuseofa
supplementalsafetyslingmayalsoberequirediftheliftcircumstanceswarrantitsuse,as
determinedbytheriggingcontractor.
NOTE: For weight information, refer
to the submittal drawing package.
Table 1. Minimum Vertical Dimension and Spreader Bar Length for Single Air Intake FXV and CXVB Units
Model Number Lower Section Upper Section
FXV CXVB H W1 W2 H W1 W2
FXV-0806x-x-x CXVB-x-0806-x 3'-6" 8'-6" 4'-0" 3'-1" 8'-6" 3'-2"
FXV-0809x-x-x CXVB-x-0809-x 4'-4" 8'-6" 4'-0" 3'-1" 8'-6" 3'-2"
FXV-0812x-x-x CXVB-x-0812-x 4'-4" 8'-6" 4'-0" 5'-3" 8'-6" 3'-2"
FXV-0818x-x-x CXVB-x-0818-x 5'-3" 8'-6" 4'-0" 8'-2" 8'-6" 3'-2"
FXV-1212x-x-x CXVB-x-1212-x 4'-4" 11'-10" 5'-3" 5'-3" 11'-10" 4'-2"
FXV-1218x-x-x CXVB-x-1218-x 5'-3" 11'-10" 5'-3" 8'-2" 11'-10" 4'-2"
NOTE: All single-cell and multi-cell
units must be rigged one section
at a time.
CROSSFLOW COIL PRODUCTS
Unit Rigging & Assembly
2
Figure 1a. Lower Section Lift
Section Assembly of Two-Piece Cells
Figure 1b. Upper Section Lift
WARNING: Failure to use lifting
provisions can result in a dropped
load causing severe injury, death,
and/or property damage. Lifts
must be performed by qualified
riggers following BAC published
Rigging Instructions, and generally
accepted lifting practices. The
use of a supplemental safety
sling may also be required if the
lift circumstances warrant its
use, as determined by the rigging
contractor.

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5
Unit Rigging & Assembly
Rigging
Section Assembly of Two-Piece
Cells
Two-Piece Cell Assembly Instructions:
1. Removeanyaccessoriesshippedinthecoldwaterbasin.
2. Positionthelowersectionontheunitsupportsandboltinplace.
3. Wipeanymoistureanddirtfromtheperimetermatingangesofthelowersection.
4. Afterthelowersectionoftheunitisinplace,retracttheliftingears(whereapplicable)
insidetheunittoavoidinterferencewhentheuppersectionoftheunitispositioned
asillustratedinFigure 2.
5. Installatbutylsealertape(BACpart#554000)suppliedwiththeunit,as
illustratedinFigure 3,onthematingangesofthelowersectioninacontinuousline.
Ateachcorner,allow1”overlap.
6. Beforeloweringtheuppersectionontothelowersection,besuretolineupthebolt
holesusingdriftpinsasillustratedinFigure 4(nofewerthanoneholeateachedge).
Guidetheuppersectionontothelowersectionstartingwithaboltholeatone
cornerandfollowingdowntheange.
7. Securetheuppersectioninplaceusingboltssuppliedwiththeunittoensureleak-
freeoperation(Figure 5).
NOTE: All piping must be restrained
to ensure no vertical or horizontal
movement. All piping and supports
are to be furnished by others.
Piping must be independently
supported, not from the unit. Refer
to the certified drawing for details
on the connection size, etc.
NOTE: IBC Rating is void if section
assembly is not performed as
described in this manual.
Figure 4. Drift Pin Alignment
Figure 3. Assembly of Two-Piece Unit
Figure 5. Typical Bolting
Figure 2. Lifting Ears
LiftingEarsin
RaisedPosition
LiftingEar
Retracted
3/8”Bolt
FlatButyl
Sealer
Tape
Lock
Washer,
Flatwasher
andNut
Flatwasher
Figure 1b. Upper Section Lift
.

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6
Section Assembly of Optional Three-Piece Cells
Table 2. Minimum Vertical Dimension and Spreader Bar Length for Optional Three-Piece Lift for Single Air Intake FXV and CXVB Units
Model Number Lower Section Plenum Section Coil Section
FXV CXVB H W1 W2 H W3 H W4
FXV-0806x-x-x CXVB-x-0806-x 3'-6" 8'-6" 4'-0" 3'-1" 4'-11" 3'-1" 3'-5"
FXV-0809x-x-x CXVB-x-0809-x 4'-4" 8'-6" 4'-0" 3'-1" 4'-11" 3'-1" 3'-5"
FXV-0812x-x-x CXVB-x-0812-x 4'-4" 8'-6" 4'-0" 5'-3" 4'-11" 5'-3" 3'-5"
FXV-0818x-x-x CXVB-x-0818-x 5'-3" 8'-6" 4'-0" 8'-2" 4'-11" 8'-2" 3'-5"
FXV-1212x-x-x CXVB-x-1212-x 4'-4" 11'-10" 5'-3" 5-'3" 6'-1" 5-'3" 5'-2"
FXV-1218x-x-x CXVB-x-1218-x 5'-3" 11'-10" 5'-3" 8'-2" 6'-1" 8'-2" 5'-2"
W1
H
W2
W1
H
W2
Figure 6a. Coil Section Lift Figure 6b. Plenum Section Lift
NOTE: For the lower section, see
Figure 1a on page 4.
WARNING: Failure to use lifting
provisions can result in a dropped
load causing severe injury, death,
and/or property damage. Lifts
must be performed by qualified
riggers following BAC published
Rigging Instructions, and generally
accepted lifting practices. The
use of a supplemental safety
sling may also be required if the
lift circumstances warrant its
use, as determined by the rigging
contractor.

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7
Three-Piece Cell Assembly Instructions:
1. Removeanyaccessoriesshippedinthecoldwaterbasin.
2. Positionthelowersectionontheunitsupportsandboltinplace(seeFigure 1a on
page 4).
3. Wipeanymoistureanddirtfromtheperimetermatingangesofthelowersection.
4. Afterthelowersectionoftheunitisinplace,retracttheliftingears(where
applicable)insidetheunitasillustratedinFigure 2on page 5 toavoidinterference
whenthecoilandplenumsectionsoftheunitarepositioned.
5. Installbutylsealertape(BACpart#554000)suppliedwiththeunit,asillustrated
inFigure 3,onthematingangesofthelowersectioninacontinuousline.Ateach
corner,allowa1”overlap.
6. Beforeliftingthecoilsection,ensurethatthethree-pieceriggingkitisproperly
installedontothecoilmodule.Refertothe3PieceLiftKitInstructionsincludedin
theCustomerInformationPacketshippedwiththeunit.
7. Beforeloweringthecoilsectionontothelowersection,besuretolineupthebolt
holesusingdriftpinsasillustratedin Figure 4 onpage 5(nofewerthanoneholeat
eachedge).Guidethecoilsectionontothelowersectionstartingwithaboltholeat
onecornerandfollowingdowntheange.
8. Securethecoilsectioninplaceusingboltssuppliedwiththeunittoensureleak-free
operation(Figure 5 onpage 5).
9. Applyfoamtape(BACpart#270567)tothecoilsectionangesthatmatewiththe
plenumsection(Figure 6a).
10. Removethethree-pieceriggingkitfromthecoilmoduleandinstallitontheplenum
section.
11. Beforeloweringtheplenumsectionontothelowersection,besuretolineupthebolt
holesusingdriftpinsasillustratedinFigure 4(nofewerthanoneholeateachedge).
Guidetheplenumsectionontothelowersectionstartingwithaboltholeatone
cornerandfollowingdowntheange.
12. Securetheplenumsectioninplaceandattachtocoilsectionusingboltssupplied
withtheunittoensureleak-freeoperation(Figure 5).
13. Removethethree-pieceriggingkitfromtheplenumsection.
Section Assembly of Four-Piece Cells (FXV3 and CXVT)
Table 3. Minimum Vertical Dimension and Spreader Bar Length for Dual Air Intake FXV and CXVT Units
Model Number
Lower Section Plenum Section Coil Section
H W1 H W1 H W1
FXV3-1224-xxx 20’ 12’ 20' 12’ 16’ 12’
FXV3-1426-xxx 20' 14’ 22' 14’ 16’ 14’
CXVT-x-1224-x, XECXVT-1224-x, CXVT-x-2424-x,
XECXVT-2424-x 20’ 12’ 20' 12’ 16’ 12’
CXVT-x-1426-x, XECXVT-1426-x, CXVT-x-2826-x,
XECXVT-2826-x 20' 14’ 22' 14’ 16’ 14’
Unit Rigging & Assembly
Section Assembly of Optional
Three-Piece Cells
Section Assembly of Four-
Piece Cells
WARNING: Failure to use lifting
provisions can result in a dropped
load causing severe injury, death,
and/or property damage. Lifts
must be performed by qualified
riggers following BAC published
Rigging Instructions, and generally
accepted lifting practices. The
use of a supplemental safety
sling may also be required if the
lift circumstances warrant its
use, as determined by the rigging
contractor.

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8
Figure 7c. Lower Section Lift
W1
(MIN)
H
Safety
Slings
Spreader
Bar
Lifting Cable
Figure 7a. Plenum Module Lift
Plenum Module
Safety
Slings
W1
(MIN)
Spreader Bar
Lifting Cable
Safety
Slings
Coil Module
Spreader Bar
Lifting Cable
W1
(MIN)
Figure 8. Lower Section Sealing Detail
SpreaderBar
LiftingCable
Spreader
Bar
LiftingCable
Plenum Module
Coil Module
Safety
Slings
Safety
Slings
W1
(MIN)
W1
(MIN)
PerimeterFlange
Seals
PlenumStepSeal
NOTE: All single-cell and multi-cell
units must be rigged one section
at a time.
Dual Air Intake Four Piece Cell Assembly Instructions:
1. Removeanyaccessoriesshippedinthecoldwaterbasin.
2. Positionthelowersectionontheunitsupportsandboltinplace.
3. Wipemoistureanddirtfromtheperimeterangeandplenumstepasshownin
Figure 8.
4. Applyatbutylsealertape(BACpart#554000)tocriticalsealareasshownin
Figure 9.Applya2”x2”pieceofatbutylsealertapetothecornerriggingguidesas
showninFigure 10.Applyatbutylsealertapeacrosstheplenumstepasshownin
Figure 11.
5. Applyatbutylsealertapearoundtheentireperimeterofthelowersection.Align
thetapeontheperimeterangeasshowninFigure 12.SeeFigures 10and11for
criticalsealingareas.Allow1”overlaptapeattheselocations.
Figure 7b. Coil Module Lift

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9
Unit Rigging & Assembly
Section Assembly of
Four-Piece Cells
Figure 9. Upper and Lower Assembly for Dual Air Intake FXV3 and CXVT
CriticalSeal(SeeFigure11)
CriticalSeal(SeeFigure10)
Figure 11. Plenum Step Detail
WaterBafe
RiggingGuide PerimeterSeal
2”x2”Piece
ofFlatButyl
SealerTape
(Allow1”
Overlap)
PerimeterSeal
1”Overlap
PlenumStep
PlenumStepSeal
FlushAgainstStep
Figure 12. Application of Butyl Sealer Tape
FlatButylSealer-
Tape
InsideFace
Aligninsideedge
oftapewithedge
ofatsurface
Figure 10. Perimeter Seal Detail
6. Liftandsettheplenummodule.Centertheplenummoduletransverselyandlongitudinally.Theriggingguides
(Figure 13a)willengagewhentheplenummoduleiswithin2”ofthelowersection.Bolttheplenummoduleinplace
atthefourinternalbracketlocations.SeeFigure 5onpage 5fortypicalboltingdetail.
Figure 13a. Plenum Module Rigging
13b
RiggingGuide
RiggingGuides
Figure 13b. Detail of Receiver/
Slot for Coil Rigging Guide
Receiver/
Slot
forCoil
Rigging
Guide

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10
Rigging
Guide
Plenum
Side
Coil
Connections
Figure 15. Coil Module End
Figure 14b. Detail of Corner Column
CornerColumn
78”or97”
Length
of“D”Seal
42”Length
of“D”Seal
5/8”Space
Betweenthe
RiggingGuide
and“D”Seal
RiggingGuide
5/8”Space
Betweenthe
RiggingGuide
and“D”Seal
RiggingGuide
(4places)
Figure 14a. Coil Module as Seen from the Plenum Side
14b
“D”Seal “D”Seal
7. Beforeriggingthecoilmodules,wipeanymoistureanddebrisfromthecornercolumns
andapply“D”seals(BACpart#271665)attwolocationsoneachcoilmoduleas
showninFigure 14b.
± 1/2°
X
+1°
-0°
OK
Figure 16. Coil Module Level Tolerance as Seen from the
Plenum Side
Figure 17. Coil Module Level Tolerance as Seen
From the Coil Module End
8. Liftthecoilmoduleandverifythatitislevel.Adjustliftingdevicesas
necessarytolevelthecoilmodulebeforeattemptingtoset.Thecoil
connectionofthecoilmoduleweighsmoreandwillaffectthebalance.
TolerancesaregiveninFigures 16and17.
NOTE: Failure to level the
coil module for rigging will prevent
proper engagement of rigging
guides.
9. Toengagetheriggingguides,
thecoilmodulemustbe
positionedbetween23/4”
and33/4”abovethelower
sectionasitismovedtowards
theplenummodule.Oncethe
coilmoduleriggingguideshave
engagedtheplenummodule
cornercolumns,lowerthecoil
intonalpositionasshownin
Figure 18.
10. Boltthecoilmoduletothelower
sectionalongthelouverface
ange.SeeFigure 5on page 5
fortypicalboltingdetails. Figure 18. Coil Module Rigging
FirstIn
ThenDown
Rigging
Guides
23/4”to33/4”

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11
42” Length
of “D” Seal
5/8”Space
Between the
Rigging Guide
and “D” Seal
Figure 18. Coil Module Rigging
Rigging
Guides
ENDURADRIVE®Fan System Installation
The ENDURADRIVE®Fan System is optional for select Series FXV3 and CXVT
models.TheENDURADRIVE®FanSystemvariablefrequencydrive(VFD)isto
beinstalledperthe ACS880+N5350 Cooling Tower Drives User's Guide
available at www.abb.com. ThefanmotormustbewireddirectlyintotheVFDand
cannotbewiredacrosstheline.Forwiringdetails,refertothesubmittal
drawings.
Warnings for the ENDURADRIVE®Fan System
•WARNING: ENDURADRIVE®Fan System motors can induce voltage and current in the motor
leads by rotating the motor shaft, even when the motor is completely disconnected from the
power source. Electrical shock can cause severe personal injury or death. Therefore,
mechanically lock or tie down the fan until all wiring has been completed and before
servicing the drive system, or when performing any motor maintenance procedure. Only
qualified personnel should attempt the installation, operation and maintenance of this
equipment.
•WARNING: Pacemaker danger − Magnetic and electromagnetic fields in the vicinity of current
carrying conductors and ENDURADRIVE®Fan System motors can result in a serious health
hazard to persons with cardiac pacemakers, metal implants, and hearing aids. To avoid risk,
stay away from the area surrounding the ENDURADRIVE®Fan System motor.
•WARNING: The VFD may apply hazardous voltages to the motor leads after power to the
controller has been turned off. Verify that the controller is incapable of delivering hazardous
voltages and that the voltage at the motor leads is zero before proceeding. Failure to comply
with this warning may result in severe personal injury or death.
Attentions for the ENDURADRIVE®Fan System
•VFD must be powered on at all times so that trickle current can remove moisture from motor
when idle.
•Use only a shielded motor power cable with a complete circumferential braided or copper
film/tape ground jacket around the power leads. This ground should be secured to the motor
frame from within the motor terminal box and must return without interruption to the drive
ground.
•To prevent equipment damage, be sure that the electrical service is not capable of delivering
more than the maximum motor rated amps listed on the rating plate.
Unit Rigging & Assembly
Section Assembly of
Four-Piece Cells
ENDURADRIVE®Fan System
Installation

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12
CROSSFLOW COIL PRODUCTS
Single Air Intake Unit
Optional Accessories
Introduction
This section includes installation information for FXV and CXVB single air intake optional
accessories only. Fordualairintakeunits,alloptionalaccessoriessuchasladders,safety
cages,platformsandhandrailpackagesshouldbeinstalledasshownontheappropriate
referencedrawinginthesubmittalpackagefromBaltimoreAircoilCompany.Any
applicablereferencedrawingsareincludedwiththeunitintheenvelopeattachedtothe
sideoftheunitmarked“Contractor’sInstallationInformation.”
Forthissection,pleaserefertoTable 4forroundedunitlengthsandwidths.These
roundedmeasurementsareusedintheoptionalaccessoryinstallationinstructions.
Model Number Rounded
Width
Rounded
LengthFXV CXVB
FXV-0806x-x-x CXVB-x-0806-x 8’ 6’
FXV-0809x-x-x CXVB-x-0809-x 8’ 9’
FXV-0812x-x-x CXVB-x-0812-x 8’ 12’
FXV-0818x-x-x CXVB-x-0818-x 8’ 18’
FXV-1212x-x-x CXVB-x-1212-x 12’ 12’
FXV-1218x-x-x CXVB-x-1218-x 12’ 18’
Table 4. Rounded Widths and Lengths for Single Air Intake FXV and CXVB Units
NOTE: Motor davit should be
installed prior to rigging the upper
fan section for easier installation.
3

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13
Motor Davit Assembly Installation (Optional)
Theremovalsystemincludesadavitassemblyandaremovablepanelforeachmotor.
Theassemblyislocatedonthesideoppositeoftheairintakefacetofacilitatemotor
replacement.
1. Verifydavitbracket(s)arealreadyinstalledontheunitabovethemotoraccess
panel(s).
2. Attachdavitsupport(s)todavitbracket(s)withbolts,nuts,andlockwashersprovided.
3. Lowerdavitarmintodavitsupport.Relocateasnecessary.
Figure 19a. End Motor Davit Assembly
Davit Arm
Motor
Davit
Support
Davit
Bracket
Motor Access Panel
End Davit Assembly
Davit Arm
Motor
Davit
Support
Davit
Bracket
Motor Access Panel
Center Davit Assembly (When Applicable)
Figure 19b. Center Motor Davit Assembly
Optional Accessories
Introduction
Motor David Assembly
Installation

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14
PCD Hood Assembly (Optional)
TheFXV’sinnovativedesignresultsinalowheatlosswhentheunitisidle.When
additionalheatlossreductionisdesired,coilairintakehoodswithfactorymountedPCDs
withstainlesssteellinkagesanddamperactuatorscanbeprovided.Themotoractuators
areeasilyaccessible.Theadditionofoptionalfactorymountedinsulationtothehoodand
casingcanfurtherreducetheheatlossbyminimizinglossesduetoconduction.
1. LowerthePCDhoodintoplacewiththeaccessdooronthelouverfaceoftheunit.
2. Applyfoamtape(BACpart#270567)tothebottomedgeofthePCDhood.Attach
thePCDhoodalongthefrontandbackusinghardwareprovided.
Lifting Ear (4)
PCD Access Door
PCD Hood Front
PCD Hood Back
Louver Face
Figure 21. PCD Hood Assembly (FXV-0806 Shown)

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15
Optional Accessories
PCD Hood Assembly
Discharge Sound Attenuation
Assembly (FXV Only)
Discharge Sound Attenuation Assembly (FXV Only) (Optional)
1. VerifyclipsarefactoryinstalledasshowninFigure 22andTable 4.
2. Lowerattenuatorintoplaceandfastenusingprovidedhardware
andattenuatorclips.
A
B
C
D
E
F
Figure 22. Position of Discharge Sound Attenuation Clips
Model Number Position
FXV-0806, FXV-0809 A, B, E, and F
FXV-0812, FXV-0818,
FXV-1212, FXV-1218
A, B, C, D, E,
and F
Table 4. Position of Discharge Sound Attenuation Clips
NOTE: Discharge sound attenuation
clip position is unaffected by the
unit configuration.
NOTE: For extremely sound sensitive
installations, factory designed,
tested and rated sound attenuation
is available for both the air intake
and discharge. On single air intake
models the thermal performance
with intake or discharge sound
attenuation is certified in
accordance with CTI Standard
STD-201.
Figure 23. Discharge Sound Attenuation Installed
(FXV-1212 Shown)
Discharge
Sound
Attenuation

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16
Detail A
Detail B
Intake Sound Attenuation Assembly (FXV Only) (Optional)
1. Lowerintakesoundattenuationmodulesothatthehangerstintotheangesatthe
topandbottomoftheairintakesection.
2. Fastenbothendsoftheintakesoundattenuationmoduletotheunitusingbolts
provided.
Fill Section
Intake Sound
Attenuation Top
Bottom
Lifting Ear (2)
Figure 24. Intake Sound Attenuation
Detail C
Bolting
Locations

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17
External Service Platform Installation (Optional)
RefertoFigures 25through27onpages 17through19foryourunitplatformassembly.
1. Lifthang-onmodule(s)intoplacebyplacinghangerintonotchatthetopoftheunit,
andsecuretounitusing3/8”x11/4”bolts.SeeDetail A(Figures 25through 27).
2. Slideclampsbehindpanelangeatbottomofhang-onmodule(s)supports,andsecure
toplatform. SeeDetail B (Figures 25through 27).
3. Ifapplicable,liftdrop-inplatformsection(s)betweenmountedhang-onmodules,and
lowerintopositionsothatitrestsonsupportchannels.Boltplatformandrailingsinto
placeusing3/8”x11/4”bolts.See Detail C (Figures 26and 27).
Detail A Detail B
Figure 25. External Service Platform Assembly
for 8’ x 6’ and 8’ x 9’ Units
Optional Accessories
Intake Sound Attenuation
Assembly (FXV Only)
External Service Platform
Installation
NOTES:
1. Platform can be installed prior
to rigging coil section for easier
installation.
2. Platforms, ladders and safety
cages can be added at the time
of order or as an aftermarket
item.
3. Safety gates are provided for all
handrail openings as standard.
All components are designed to
meet OSHA requirements.
Unit
3/8x11/4”Bolt
3/8”Flatwasher
Hang-onModule Hang-OnModule
3/8”Rivnuts
Flange

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18
Figure 26. External Service Platform Assembly
for 8’ x 12’ and 12’ x 12’ Units
Lower Drop-in
Platform Into
Position
Drop-In Support
Detail C
Detail A
Unit
3/8x11/4”Bolt
3/8”Flatwasher
Hang-onModule
Detail B
Hang-OnModule
3/8”Rivnuts
Flange