Greenheck RV-35 User manual

General Safety Information
WARNING
The roof lining contains high voltage wiring. To
prevent electrocution, do not puncture the interior or
exterior panels of the roof.
DANGER
t"MXBZTEJTDPOOFDUQPXFSCFGPSFXPSLJOHPOPSOFBS
UIJTFRVJQNFOU-PDLBOEUBHUIFEJTDPOOFDUTXJUDI
PSCSFBLFSUPQSFWFOUBDDJEFOUBMQPXFSVQ
t*GUIJTVOJUJTFRVJQQFEXJUIPQUJPOBMHBTBDDFTTPSJFT
UVSOPGGHBTTVQQMZXIFOFWFSQPXFSJTEJTDPOOFDUFE
CAUTION
This unit is equipped with a compressed refrigerant
TZTUFN*GBMFBLJOUIFTZTUFNTIPVMEPDDVS
JNNFEJBUFMZFWBDVBUFUIFBSFB"O&1"$FSUJGJFE
5FDIOJDJBONVTUCFFOHBHFEUPNBLFSFQBJSTPS
DPSSFDUJPOT3FGSJHFSBOUMFBLTNBZBMTPDBVTFCPEJMZ
harm.
CAUTION
8IFOTFSWJDJOHUIFVOJUUIFJOUFSOBMDPNQPOFOUTNBZ
CFIPUFOPVHIUPDBVTFQBJOPSJOKVSZ"MMPXUJNFGPS
DPPMJOHCFGPSFTFSWJDJOH
0OMZRVBMJmFEQFSTPOOFMTIPVMEJOTUBMMBOENBJOUBJOUIJT
TZTUFN1FSTPOOFMTIPVMEIBWFBDMFBSVOEFSTUBOEJOHPG
UIFTFJOTUSVDUJPOTBOETIPVMECFBXBSFPGHFOFSBMTBGFUZ
QSFDBVUJPOT*NQSPQFSJOTUBMMBUJPODBOSFTVMUJOFMFDUSJD
TIPDLQPTTJCMFJOKVSZEVFUPDPNJOHJODPOUBDUXJUI
moving parts, as well as other potential hazards. Other
DPOTJEFSBUJPOTNBZCFSFRVJSFEJGIJHIXJOETPSTFJTNJD
BDUJWJUZBSFQSFTFOU*GNPSFJOGPSNBUJPOJTOFFEFE
DPOUBDUBMJDFOTFEQSPGFTTJPOBMFOHJOFFSCFGPSFNPWJOH
forward.
  'PMMPXBMMMPDBMFMFDUSJDBMBOETBGFUZDPEFTBTXFMM
BTUIF/BUJPOBM&MFDUSJDBM$PEF/&$UIF/BUJPOBM
'JSF1SPUFDUJPO"HFODZ/'1"XIFSFBQQMJDBCMF
'PMMPXUIF$BOBEJBO&MFDUSJD$PEF$&$JO$BOBEB
  "MMNPWJOHQBSUTNVTUCFGSFFUPSPUBUFXJUIPVU
TUSJLJOHPSSVCCJOHBOZTUBUJPOBSZPCKFDUT
  6OJUNVTUCFTFDVSFMZBOEBEFRVBUFMZHSPVOEFE
4. Do not spin wheel faster than maximum cataloged
GBO31."EKVTUNFOUTUPGBOTQFFETJHOJmDBOUMZ
BGGFDUNPUPSMPBE*GUIFGBO31.JTDIBOHFEUIF
NPUPSDVSSFOUTIPVMECFDIFDLFEUPNBLFTVSFJUJT
not exceeding the motor nameplate amps.
  7FSJGZUIBUUIFQPXFSTPVSDFJTDPNQBUJCMFXJUIUIF
equipment.
6. Never open access doors to the unit while it is
running.
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble,
install, operate or maintain the product described. Protect yourself and others by observing all safety
information. Failure to comply with instructions could result in personal injury and/or property damage!
1
Packaged Rooftop Ventilator
Model RV/RVE
®
®
Part #474612
RV/RVE
Packaged Rooftop Ventilator

Receiving
6QPOSFDFJWJOHUIFQSPEVDUDIFDLUPNBLFTVSFBMM
JUFNTBSFBDDPVOUFEGPSCZSFGFSFODJOHUIF#JMMPG-BEJOH
UPFOTVSFBMMJUFNTXFSFSFDFJWFE*OTQFDUFBDIDSBUFGPS
TIJQQJOHEBNBHFCFGPSFBDDFQUJOHEFMJWFSZ/PUJGZUIF
DBSSJFSJGBOZEBNBHFJTOPUJDFE5IFDBSSJFSXJMMNBLF
OPUJmDBUJPOPOUIFEFMJWFSZSFDFJQUBDLOPXMFEHJOHBOZ
EBNBHFUPUIFQSPEVDU"MMEBNBHFTIPVMECFOPUFEPO
BMMDPQJFTPGUIF#JMMPG-BEJOHXIJDIJTDPVOUFSTJHOFECZ
UIFEFMJWFSJOHDBSSJFS"$BSSJFS*OTQFDUJPO3FQPSUTIPVME
CFmMMFEPVUCZUIFDBSSJFSVQPOBSSJWBMBOEmMFEXJUIUIF
5SBGmD%FQBSUNFOU*GEBNBHFEVQPOBSSJWBMmMFDMBJN
XJUIUIFDBSSJFS"OZQIZTJDBMEBNBHFUPUIFVOJUBGUFS
BDDFQUBODFJTOPUUIFSFTQPOTJCJMJUZPGUIFNBOVGBDUVSFS
Unpacking
7FSJGZUIBUBMMSFRVJSFEQBSUTBOEUIFDPSSFDURVBOUJUZ
PGFBDIJUFNIBWFCFFOSFDFJWFE*GBOZJUFNTBSF
NJTTJOHSFQPSUTIPSUBHFTUPZPVSMPDBMSFQSFTFOUBUJWFUP
BSSBOHFGPSPCUBJOJOHNJTTJOHQBSUT4PNFUJNFTJUJTOPU
QPTTJCMFUIBUBMMJUFNTGPSUIFVOJUCFTIJQQFEUPHFUIFS
EVFUPBWBJMBCJMJUZPGUSBOTQPSUBUJPOBOEUSVDLTQBDF
$POmSNBUJPOPGTIJQNFOUTNVTUCFMJNJUFEUPPOMZ
JUFNTPOUIF#JMMPG-BEJOH
Handling
6OJUTBSFUPCFSJHHFEBOENPWFECZUIFMJGUJOHCSBDLFUT
QSPWJEFE5IJTNPEFMJTOPUEFTJHOFEGPSGPSLMJGUJOH
-PDBUJPOBOEOVNCFSPGMJGUJOHQPJOUTWBSJFTCZNPEFM
BOETJ[FBOEBMMQSPWJEFEMJGUJOHCSBDLFUTNVTUCFVTFE
UPQSPQFSMZTVQQPSUUIFVOJUEVSJOHIBOEMJOH)BOEMF
FBDIVOJUJOTVDIBXBZBTUPLFFQGSPNTDSBUDIJOHPS
DIJQQJOHUIFDPBUJOH%BNBHFEmOJTINBZSFEVDFUIF
BCJMJUZPGUIFVOJUUPSFTJTUDPSSPTJPO
Storage
6OJUTBSFQSPUFDUFEBHBJOTUEBNBHFEVSJOHTIJQNFOU*G
UIFVOJUDBOOPUCFJOTUBMMFEBOEPQFSBUFEJNNFEJBUFMZ
QSFDBVUJPOTOFFEUPCFUBLFOUPQSFWFOUEFUFSJPSBUJPOPG
UIFVOJUEVSJOHTUPSBHF5IFVTFSBTTVNFTSFTQPOTJCJMJUZ
of the unit and accessories during storage. The
NBOVGBDUVSFSXJMMOPUCFSFTQPOTJCMFGPSEBNBHFEVSJOH
TUPSBHF5IFTFTVHHFTUJPOTBSFQSPWJEFETPMFMZBTB
convenience to the user.
Inspection and Maintenance During
Storage
While in storage, inspect units once per month. Keep
BSFDPSEPGJOTQFDUJPOBOENBJOUFOBODFQFSGPSNFE*G
moisture or dirt accumulations are found on the parts,
UIFTPVSDFTIPVMECFMPDBUFEBOEFMJNJOBUFE"UFBDI
JOTQFDUJPOSPUBUFBMMNPWJOHQBSUTCZIBOEUFOUP
mGUFFOSFWPMVUJPOTUPEJTUSJCVUFMVCSJDBOUPONPUPSBOE
CFBSJOHT*GQBJOUEFUFSJPSBUJPOCFHJOTDPOTJEFSBUJPO
TIPVMECFHJWFOUPUPVDIVQPSSFQBJOUJOH6OJUTXJUI
TQFDJBMDPBUJOHTNBZSFRVJSFTQFDJBMUFDIOJRVFTGPS
UPVDIVQPSSFQBJS
.BDIJOFEQBSUTDPBUFEXJUISVTUQSFWFOUBUJWFTIPVME
CFSFTUPSFEUPHPPEDPOEJUJPOQSPNQUMZJGTJHOTPGSVTU
PDDVS*NNFEJBUFMZSFNPWFUIFPSJHJOBMSVTUQSFWFOUBUJWF
DPBUJOHXJUIQFUSPMFVNTPMWFOUBOEDMFBOXJUIMJOUGSFF
DMPUIT1PMJTIBOZSFNBJOJOHSVTUGSPNUIFTVSGBDFXJUI
DSPDVTDMPUIPSmOFFNFSZQBQFSBOEPJM%POPUEFTUSPZ
UIFDPOUJOVJUZPGUIFTVSGBDFT8JQFDMFBOUIPSPVHIMZ
XJUI5FDUZM¥"TIMBOE*ODPSUIFFRVJWBMFOU'PS
hard to reach internal surfaces or for occasional use,
DPOTJEFSVTJOH5FDUZM¥.3VTU1SFWFOUBUJWFPS
8%¥or the equivalent.
Product Overview
"IPSJ[POUBMMZDPOmHVSFE)JHI1FSDFOUBHF0VUEPPS
"JSVOJUEFTJHOFEGPSJOTUBMMBUJPOFJUIFSJOEPPSTPS
PVUEPPST&BDIVOJUIBTNVMUJQMFPQUJPOTGPSDPPMJOH
and/or heating. The unit is designed to replace air that
JTFYIBVTUFEGSPNUIFCVJMEJOHBOEBMTPIFBUBOEDPPM
BTOFFEFE5IFBJSWPMVNFQSPEVDFECZUIFVOJUJT
DPOTUBOUCVUDBOCFPQUJPOBMMZNPEVMBUFEUPQSPWJEFB
WBSJBCMFBJSWPMVNF7"7BOESFDJSDVMBUJPOJTBMTPPGGFSFE
as an option.
Cooling
6OJUTIBWFUIFGPMMPXJOHDPPMJOHPQUJPOTBWBJMBCMF
 t 1BDLBHFE%9
 t 4QMJU%9
 t $IJMMFEXBUFSDPJM
6OJUTXJUIQBDLBHFE%9BSFTIJQQFEGVMMZDIBSHFEXJUI
SFGSJHFSBOUBOEBSFSFBEZGPSPQFSBUJPOVQPOBSSJWBM
Heating
There are three different optional heat sources that can
CFPSEFSFEGPSUIJTVOJU
t*OEJSFDUHBTmSFEGVSOBDFXJUIPOFPSUXPTFUTPG
heat exchangers
 t &MFDUSJDIFBUXJUIJOmOJUFMZWBSJBCMF4$3DPOUSPM
 t )PUXBUFSDPJM
Airflow Arrangement
5IFVOJUJTDBQBCMFPG$POTUBOU"JS7PMVNF$"7
7BSJBCMF"JS7PMVNF7"70VUEPPS"JSBOEIBWF
recirculating air options.
Safety Listing
.PEFMTBSFMJTUFEQFS"/4*6-)FBUJOHBOE
$PPMJOH&RVJQNFOUBOEBSF&5-$FSUJmFE
Supplemental Installation, Operation and
Maintenance Manuals
3FGFSUPUIFGPMMPXJOH(SFFOIFDL*OTUBMMBUJPO0QFSBUJPO
BOE.BJOUFOBODF.BOVBMTGPSBEEJUJPOBMJOGPSNBUJPO
 t *OEJSFDU(BT'JSFE)FBU.PEVMFT
 t 1$0%%$$POUSPMMFS0QFSBUJOH.BOVBM
 t )PVTFE1MFOVN"SSBZ1MVHBOE1MFOVN
Model Cooling Capacity
3737& 5 to 15 tons
3737& UPUPOT
3737& UPUPOT
Models and Capacities
5IFQBDLBHFESPPGUPQWFOUJMBUPSJTCVJMUPOUISFF
different platform sizes.
2Packaged Rooftop Ventilator ®

Table of Contents
General Safety Information ...................1
Receiving, Handling, Storage .................2
Product Overview
 $PPMJOH....................................2
 )FBUJOH....................................2
 "JSGMPX"SSBOHFNFOU .........................2
 4BGFUZ-JTUJOH ...............................2
 4VQQMFNFOUBM*OTUBMMBUJPO0QFSBUJPOBOE
.BJOUFOBODF.BOVBMT.......................2
 .PEFMTBOE$BQBDJUJFT .......................2
Subassemblies
 #MPXFS ....................................4
 $PJMT ......................................4
 $PNQSFTTPST ...............................4
Dampers...................................4
 0QUJPOBM#BSPNFUSJD3FMJFG%BNQFS ..............4
 &MFDUSJD)FBUFS ..............................4
Filters .....................................4
 *OEJSFDU(BT'JSFE'VSOBDF ....................4
 1BDLBHFE%94ZTUFN ........................4
 4QMJU%9 ...................................4
 7FTUJCVMF...................................4
Installation
5ZQJDBM6OJU8FJHIUTBOE%JNFOTJPOT ............5
4FSWJDF$MFBSBODFT...........................5
"EEJUJPOBM$MFBSBODFTGPS1BDLBHFE%9 ..........6
)BOEMJOH$PODFSOTGPS6OJUTXJUI1BDLBHF%9 .....6
Lifting .....................................6
 3PPG$VSC.PVOUJOH .........................7
 0QUJPOBM1JQJOH7FTUJCVMF......................7
 %VDUXPSL$POGJHVSBUJPOT ......................7
 3BJM.PVOUJOHBOE-BZPVU .....................
Recommended Electrical and
Gas Supply Entry Locations ..................
 (BT4VQQMZ1JQJOH ...........................
 (BT$POOFDUJPOT ............................
Electrical Information ........................
Determine the Size of Main Power Lines ........9
Determine the Size of Electric Heater Wiring .....9
Provide the Opening(s) for the Electrical
Connections ..............................9
Connect the Power Supplies ..................9
Wire the Optional Convenience Outlet ..........9
Connect Field-Wired Low Voltage Components . . .9
Field-Provided Disconnect ....................
Plumbing / Piping Overview
 4QMJU%98BUFS$PJM$POOFDUJPOT..............
 $POEFOTBUF%SBJO5SBQ ......................
Control Center Components
 .BJO$POUSPM$FOUFS.........................11
 0QUJPOBM*OEJSFDU(BT'JSFE'VSOBDF ............11
Component Operation
 1IBTF.POJUPS .............................12
 7BSJBCMF'SFRVFODZ%SJWF .....................12
 4VQQMZ'BO7'%4FRVFODF ...................12
 0QUJPOBM&YIBVTU'BO7'%4FRVFODF ...........12
Factory-Installed Refrigeration System
Components..............................13
Start-Up – Unit
 .PEFMBOE4FSJBM/VNCFS ....................14
 1SF4UBSU6Q$IFDLMJTU.......................15
 4QFDJBM5PPMT3FRVJSFE ......................15
 4UBSU6Q1SPDFEVSF .........................15
 7PMUBHF*NCBMBODF ..........................15
 4UBSU6Q$IFDLMJTU ..........................16
Start-Up – Components
Fan ......................................17
 4VQQMZ'BO1MFOVN5ZQF ....................17
Fan Wheel Rotation Direction .................17
 4VQQMZ&YIBVTU'BO.........................17
 7JCSBUJPO ..................................17
 %JTDIBSHF"JS5FNQFSBUVSF4FOTPS .............17
Optional Energy Wheel
4UBSU6Q ..................................
 %SJWF#FMU .................................
 "EKVTUUIF"JS4FBMT .........................
 4FRVFODFPG0QFSBUJPO ......................
 .BJOUFOBODF...............................
 *OTQFDUJPO.................................
 8IFFM%JTBTTFNCMZ .........................
 $MFBOJOH ..................................
 3FBTTFNCMZ ...............................
 &OFSHZ3FDPWFSZ8IFFM#FMU ..................
 &OFSHZ3FDPWFSZ8IFFM#FBSJOHT ..............
 &OFSHZ3FDPWFSZ8IFFM5SPVCMFTIPPUJOH .......
Troubleshooting
"MBSNT
 %%$$POUSPMMFS ..........................
 1IBTF.POJUPS............................
 7BSJBCMF'SFRVFODZ%SJWF ...................
 0QUJPOBM'9'VSOBDF$POUSPMMFS ............
 0QUJPOBM%JHJUBM4DSPMM$PNQSFTTPS$POUSPMMFS ...
Unit......................................21
 3FGSJHFSBUJPO$JSDVJU ......................
Routine Maintenance
 .POUIMZ ..................................26
 4FNJBOOVBMMZ ..............................26
 "OOVBMMZ ..................................26
 6OJUTXJUI1BDLBHFE%94FNJBOOVBMMZ..........26
Maintenance Procedures
 -VCSJDBUJPO ................................26
Dampers..................................26
Gas Furnace...............................26
 'BO.PUPST................................27
Fan Wheel and Fasteners ....................27
 *OUFSOBM'JMUFS.BJOUFOBODF ...................27
 0VUEPPS"JS'JMUFST ..........................27
 &YUFSOBM'JMUFS.BJOUFOBODF ...................27
 $PJM.BJOUFOBODF ...........................27
Maintenance Log ....................#BDLDPWFS
Warranty ...........................#BDLDPWFS
3
Packaged Rooftop Ventilator
®

Subassemblies
Blower
&JUIFSPOFPSUXPQMFOVNUZQFGBOT"MMVOJUTBSF
FRVJQQFEXJUIBQMFOVNGBOGPS4VQQMZ"JSBOEBTFDPOE
NBZCFTFMFDUFEGPS&YIBVTU3FMJFG"JS
Coils
&WBQPSBUPSDPJMPQUJPOBM
$POEFOTFSDPJMPQUJPOBMQBDLBHFE%9POMZ
8BUFSDPJMPQUJPOBM
3FIFBUDPJMPQUJPOBM
Compressors
&BDIVOJUIBWJOHQBDLBHFE%9XJMMIBWFFJUIFSPOF
PSUXPSFGSJHFSBOUDPNQSFTTPST0QUJPOBMMZPOFUIF
DPNQSFTTPSTNBZCFBEJHJUBMTDSPMMUZQFDPNQSFTTPS
Dampers
.PUPSJ[FEJOUBLFBJSEBNQFSNPUPSJ[FESFDJSDVMBUJOH
EBNQFS0QUJPOBMSFUVSOBJSEBNQFS0QUJPOBMHSBWJUZ
UZQFFYIBVTUEBNQFS
Optional Barometric Relief Damper
6TFEEVSJOHFDPOPNJ[FSNPEFPGUIFVOJUXIFOCVJMEJOH
pressure increases, relief damper will open due to over
pressurization.
Electric Heater
"O4$3DPOUSPMMFEFMFDUSJDIFBUFSOPUTIPXOJT
BWBJMBCMFPOUIFVOJUT*USFRVJSFTBTFQBSBUFQPXFS
TVQQMZBOEIBTJUTPXODPOUSPMQBOFM4FFVOJUTQFDJmD
wiring diagram.
Plenum-Type
Supply Air Blower
Condenser Fans
(optional)
Indirect Gas-Fired Furnace
(optional)
Pl
en
um
T
yp
e
Packaged DX
Compressors
(optional)
Condenser Coils
(optional)
Intake Air
Damper
Coils
(optional)
Recirculating
Damper
Open view of Model RVE showing optional condenser coil, fans and enthalpy wheel.
Main Control
Center
Furnace Vest Plate
and
Furnace Control Center
(optional)
Final Filters
(on coil face)
Weatherhood Filters
(metal mesh)
Energy Wheel (RVE)
(optional)
Plenum-Type
Exhaust Air Blower
Filters
5XPJODIUIJDLNFUBMNFTImMUFSTJOUIFPQUJPOBM
0VUEPPS8FBUIFSIPPEBJSJOUBLFJODIUIJDLQMFBUFE
QBQFS.&37TUBOEBSEPS.&37mMUFSTJOUIF
BJSTUSFBN0QUJPOBMJODIUIJDLmMUFSCBOLXJUIJODI
UIJDL.&37øBOEJODIUIJDL.&37QMFBUFEQBQFS
Final Filters.
Indirect Gas-Fired Furnace
5IFPQUJPOBMNPEFM17(GVSOBDFJTBWBJMBCMFPOIPVTJOH
TJ[FTBOE)PVTJOHTJ[FVTFTUIFPQUJPOBM
NPEFM17'GVSOBDF
Packaged DX System
"OZVOJUNBZCFPSEFSFEXJUIBQBDLBHFE%9TZTUFN
*UXJMMJODMVEFFJUIFSPOFPSUXPDPNQSFTTPSTB
DPOEFOTFSDPJMTBOEFWBQPSBUPSDPJMTBOEBMMOFFEFE
DPNQPOFOUT6OJUTUIBUIBWFQBDLBHFE%9BSFDIBSHFE
XJUI3"SFGSJHFSBOU%POPUVTFUPPMTPSQBSUT
designed for other refrigerants on these units.
Split DX
5IFVOJUNBZCFPSEFSFEXJUIBTQMJU%9TZTUFNGPS
DPOOFDUJPOUPBCVJMEJOHDPPMJOHTZTUFN
Vestibule
4PNFVOJUTNBZCFPSEFSFEXJUIBGBDUPSZBTTFNCMFE
WFTUJCVMFUIBUJTUPCFmFMEBUUBDIFEUPUIFTJEFPGUIF
VOJU4FFMJGUJOHJOTUSVDUJPOT
4Packaged Rooftop Ventilator ®

Installation
Supply Air
Discharge
Control
Center
Recirc
Damper
Indirect Gas
Heater
Outdoor Air
Damper
Supply
Blower Compressors
Return Air Inlet
Outdoor Air
Weatherhood
Supply Filters
DX Coil
LA
W
J
H
PLAN VIEW ELEVATION
Service Clearances
Clearance
ACS
CC End
Clearance
NA
OA End
Unit
Size
A L W J J H Unit
Weight
Final Filter
Size
Outdoor Air
Weatherhood Length Width Condensing
Section
Optional
Piping Vestibule Height
RV-35 21.5 95.6 52.5 28.8 26.0 58.2 2,600 20x20
RV-50 21.5 108.8 64.0 32.0 26.0 70.5 3,600 20x25
RV-80 26.5 117.0 68.0 30.0 26.0 82.0 4,500 20x25
RVE-35 21.5 147.5 52.5 28.8 26.0 58.2 3,000 20x20
RVE-50 21.5 163.1 64.0 32.0 26.0 70.5 4,100 20x25
RVE-80 26.5 178.3 68.0 30.0 26.0 82.0 5,100 20x25
All dimensions are shown in inches. Weight is in pounds.
Note: If RV unit is ordered with optional exhaust (relief) fan, corresponding RVE dimensions will apply.
Unit Size ACS CC End OA End *NA from Unit *NA from CS *NA from Vest
RV-35/RVE-35 36 36 42 24 42 30
RV-50/RVE-50 36 36 42 24 42 30
RV-80/RVE-80 36 36 52 24 42 30
All dimensions are shown in inches.
 /"GSPN6OJUOPDPOEFOTJOHTFDUJPOPSQJQJOHWFTUJCVMF
 /"GSPN$4DPOEFOTJOHTFDUJPO
 /"GSPN7FTUQJQJOHWFTUJCVMF
"$4 "DDFTT
$$  $POUSPM$FOUFS
/"  /PO"DDFTT
0"  0VUEPPS"JS8FBUIFSIPPE
Typical Unit Weights and Dimensions
5
Packaged Rooftop Ventilator
®

Handling Concerns for Units with
Packaged DX
6OJUTIBWJOHQBDLBHFE%9IBWFBTZTUFNUIBUJT
pressurized with refrigerant and if it is damaged,
UIFSFGSJHFSBOUDPVMEMFBLJOUPUIFBUNPTQIFSFPS
DBVTFCPEJMZIBSNEVFUPUIFFYUSFNFDPMEOBUVSFPG
expanding refrigerant. Use protective equipment such
BTHMPWFTBOETBGFUZHMBTTFTUPNJOJNJ[FPSQSFWFOU
JOKVSZJODBTFPGBTZTUFNMFBLEVSJOHJOTUBMMBUJPO
Before Lifting - Vestibule
%FUFSNJOFXIFUIFSPSOPUUIFVOJUIBTBWFTUJCVMFUIBU
NVTUCFmFMEBUUBDIFEUPUIFTJEFPGUIFVOJU7FTUJCVMFT
BSFTIJQQFEBTTFNCMFECVUEFUBDIFEGSPNUIFVOJU
5IFZIBWFMJGUJOHMVHTPOUIFNTPUIFZDBOBMTPCFMJGUFE
CZDSBOFCVUUIFJOTUBMMFEMPDBUJPOPGUIFVOJUNBZNBLF
JUQSFGFSBCMFUPJOTUBMMUIFWFTUJCVMFPOUIFVOJUQSJPSUP
lifting.
Before Lifting - Field Power Access
Determine where high voltage and low voltage wiring is
UPCFCSPVHIUJOUPUIFDBCJOFU*GXJSJOHJTUPCFCSPVHIU
JOUPUIFDBCJOFUUISPVHIUIFnPPSTFF"MUFSOBUF4VQQMZ
&OUSZ-PDBUJPOTJOUIJTNBOVBM*GVOJUJTUPCFJOTUBMMFE
POBSPPGDVUBDDFTTPQFOJOHTJOUIFSPPGEFDLBT
needed.
Lifting
  #FGPSFMJGUJOHCFTVSFUIBUBMMTIJQQJOHNBUFSJBMT
IBWFCFFOSFNPWFEGSPNVOJU
2. To assist in determining rigging requirements,
weights are provided in the Unit Weights &
Dimensions section of this manual.
  6OJUNVTUCFMJGUFECZBMMMJGUJOHMVHTQSPWJEFEBUUPQ
of unit.
  4QSFBEFSCBSTNVTUTQBOUIFVOJUUPQSFWFOU
EBNBHFUPUIFDBCJOFUCZUIFMJGUDBCMFT
  "MXBZTUFTUMJGUUIFVOJUUPDIFDLGPSQSPQFSCBMBODF
BOESJHHJOHCFGPSFIPJTUJOHUPEFTJSFEMPDBUJPO
  /FWFSMJGUVOJUCZXFBUIFSIPPE
  /FWFSMJGUVOJUTJOXJOEZDPOEJUJPOT
  1SFQBSBUJPOPGDVSCBOESPPGPQFOJOHTTIPVMECF
completed prior to lifting unit to the roof.
  $IFDLUPCFTVSFUIBUHBTLFUJOHTVQQMJFECZPUIFST
IBTCFFOBQQMJFEUPUIFUPQPGUIFDVSCQSJPSUP
MJGUJOHUIFVOJUBOETFUUJOHPOUIFDVSC
%POPUVTFGPSLMJGUTGPSIBOEMJOHVOJU
Use spreader bars to prevent damage to cabinet.
Additional Clearances for
Packaged DX Units
1BDLBHFE%9VOJUTSFRVJSFBEEJUJPOBMDMFBSBODF
CFDBVTFUIFZNVTUIBWFVOSFTUSJDUFEBJSNPWFNFOU
BSPVOEUIFDPOEFOTFSDPJMBOEDPOEFOTFSGBOT)PUBJS
JTCFJOHEJTDIBSHFEGSPNUIFDPOEFOTFSGBOTEVSJOH
PQFSBUJPO&OPVHIDMFBSBODFNVTUCFQSPWJEFEUP
avoid recirculation or coil starvation. When equipped
XJUIDPOEFOTFSDPJMTUIFVOJUTIPVMEOFWFSCFQMBDFE
VOEFSBOPWFSIBOHPSJOTJEFBCVJMEJOH"NJOJNVNPG
øJODIFTBCPWFUIFDPOEFOTFSGBOTJTBDDFQUBCMFCVU
VOPCTUSVDUFEJTTUSPOHMZSFDPNNFOEFE
Minimum 48 inches clearance
Minimum 42 inches
clearance
Condenser Coil
Condenser Fans
End view of roof top unit with Packaged DX
6Packaged Rooftop Ventilator ®

Optional Piping Vestibule
*GUIFVOJUXBTPSEFSFEXJUIUIFWFTUJCVMFUIF/"/PO
"DDFTTTJEFDMFBSBODFEJNFOTJPONVTUCFNFBTVSFE
GSPNUIFWFTUJCVMF
Roof Curb Mounting
3PPGDVSCEFUBJMTJODMVEJOHEVDUMPDBUJPOTBOE
EJNFOTJPOTBSFUPCFGPVOEJOUIFSPPGDVSCBTTFNCMZ
instructions.
3PPGUPQVOJUTSFRVJSFDVSCTUPCFNPVOUFEmSTU5IF
EVDUDPOOFDUJPOTNVTUCFMPDBUFETPUIFZXJMMCFDMFBS
PGTUSVDUVSBMNFNCFSTPGUIFCVJMEJOH
1. Factory Supplied Roof Curbs
3PPGDVSCTBSF.PEFM(,%XIJDIBSFTIJQQFEJOB
LOPDLEPXOLJUJODMVEFTEVDUBEBQUFSTBOESFRVJSF
mFMEBTTFNCMZCZPUIFST"TTFNCMZJOTUSVDUJPOTBSF
JODMVEFEXJUIUIFDVSCLJU
2. Install Curb
-PDBUFDVSCPWFSSPPGPQFOJOHBOEGBTUFOJOQMBDF
$IFDLUIBUUIFEJBHPOBMEJNFOTJPOTBSFXJUIJO
JODIPGFBDIPUIFSBOEBEKVTUBTOFDFTTBSZ'PSQSPQFS
coil drainage and unit operation, it is important that the
JOTUBMMBUJPOCFMFWFM4IJNUIFDVSCBTSFRVJSFEUPMFWFM
*OTUBMMHBTLFUJOHPOUPQTVSGBDFPGDVSCQSPWJEFECZ
PUIFST
3. Install Ductwork
*OTUBMMBUJPOPGBMMEVDUTTIPVMECFEPOFJOBDDPSEBODF
XJUI4."$/"BOE".$"HVJEFMJOFT%VDUBEBQUFSTBSF
provided to support ducts prior to setting the unit.
4. Set the Unit
-JGUVOJUUPBQPJOUEJSFDUMZBCPWFUIFDVSCBOEEVDU
openings. Guide unit while lowering to align with duct
PQFOJOHT3PPGDVSCTmUJOTJEFUIFVOJUCBTF.BLFTVSF
UIFVOJUJTQSPQFSMZTFBUFEPOUIFDVSCBOEMFWFM
5. Install Vestibule
*GVOJUXBTPSEFSFEXJUIBWFTUJCVMFBOEJUIBTOPUZFU
CFFOBUUBDIFEUPUIFVOJUDBVMLBOEBUUBDIUIFWFTUJCVMF
at this time.
L
W
Typical Unit with Condensing Section and
Factory-Supplied Curb Kit
W
L
Typical Unit with Piping Vestibule and
Factory-Supplied Curb Kit
Ductwork Configurations
NOTE
Downblast Discharge DuctworkXIFOFWFS
EPXOCMBTUEJTDIBSHFJTVTFEUIFEVDUXPSLEJSFDUMZ
CFOFBUIUIFVOJUNVTUCFDPOOFDUFEXJUIFJUIFSBi5w
PSBOi-wDPOGJHVSBUJPOBOEUIFBSFBEJSFDUMZCFOFBUI
the heat source must not have any openings such
as louvers or grates.
No louvers or grates
7
Packaged Rooftop Ventilator
®

Typical Unit Installed on Rails Supplied by Others
Rail Mounting and Layout
t5IFVOJUTNBZCFJOTUBMMFEPOSBJMTQSPWJEFEBOE
JOTUBMMFECZPUIFST&OTVSFUIBUSBJMTBSFEFTJHOFEUP
handle the weight of the unit and provide proper load
EJTUSJCVUJPOPOCVJMEJOHTVQQPSUT
t.BLFTVSFUIBUSBJMQPTJUJPOJOHEPFTOPUJOUFSGFSFXJUI
the openings on the unit.
t3BJMTTIPVMESVOUIFXJEUIPGUIFVOJUBOEFYUFOE
CFZPOEUIFVOJUBNJOJNVNPGJODIFTPOFBDITJEF
t4FUVOJUPOSBJMT
&BDIJOTUBMMBUJPOJTVOJRVFBOEBTBSFTVMUBMUFSOBUF
FOUSZMPDBUJPOTNBZCFmFMEMPDBUFE#FGPSFVTJOHBOZ
BMUFSOBUFFOUSZMPDBUJPOWFSJGZUIFTVJUBCJMJUZPGUIF
location and ensure the use of an alternate location
does not interfere with unit wiring, components or
GVODUJPOBMJUZ
Recommended Gas and Electric Supply Entry Locations
Recommended Electrical and Gas
Supply Entry Locations
.BOVGBDUVSFSSFDPNNFOETUIBUFMFDUSJDBMTFSWJDFBOE
HBTTVQQMZCFCSPVHIUJOUPUIFDBCJOFUUISPVHIUIF
FOEXBMMBTTIPXOCFMPX5IFSFBSFUISFFQFOFUSBUJPOT
JOUPUIFDBCJOFUUIBUBSFSFRVJSFEPOFGPSIJHIWPMUBHF
TVQQMZXJSJOHPOFGPSMPXWPMUBHFDPOUSPMXJSJOHBOEPOF
GPSFJUIFSHBTTVQQMZPSIJHIWPMUBHFTVQQMZXJSJOHGPSBO
electric heater.
Alternate Supply Entry Locations
RECOMMENDED LOCATION:
Factory-provided opening for gas
supply. If electric heat is ordered,
use this location for high voltage
supply wiring for heater.
Optional Main Disconnect Switch
(Terminate high voltage supply wiring
here or at power distribution block).
RECOMMENDED LOCATION
for field-supplied high voltage
supply wiring.
RECOMMENDED LOCATION
for low voltage control wiring.
Disconnect Switch for electric heater.
Present only if electric heat is selected.
Terminate heater supply wiring here.
WARNING
Never drill holes in the roof of the unit! There is high
WPMUBHFXJSJOHMPDBUFECFUXFFOUIFJOOFSBOEPVUFS
roof panels. Damage to the wiring could cause severe
CPEJMZIBSNPSEFBUI
Gas Supply Piping
6OJUTXJUIJOEJSFDUHBTmSFEGVSOBDFTSFRVJSFmFME
TVQQMJFEBOEJOTUBMMFEHBTTVQQMZQJQJOH
Typical Gas Supply Piping Connection
Ground
Joint
Union
8 in. Trap
Gas to
Controls
From Gas Supply
Bleeder Valve or
1/8 in Plugged Tap
Gas Cock
Gas Connections
*GUIJTVOJUJTFRVJQQFEXJUIBOJOEJSFDUHBTmSFEGVSOBDF
DPOOFDUJPOUPBOBQQSPQSJBUFHBTTVQQMZMJOFXJMMCF
required. For complete information on installation
procedures for the optional gas furnace, refer the
*OEJSFDU(BT'JSFE)FBU*0.4FFBMTP3FDPNNFOEFE
&MFDUSJDBMBOE(BT-PDBUJPOTJOUIJTNBOVBM
8Packaged Rooftop Ventilator ®

WARNING
The roof lining contains high voltage wiring. To prevent
electrocution, do not puncture the interior or exterior
panels of the roof.
WARNING
5PQSFWFOUJOKVSZPSEFBUIEVFUPFMFDUSPDVUJPOPS
DPOUBDUXJUINPWJOHQBSUTMPDLEJTDPOOFDUTXJUDI
open.
'PSVOJUTXJUIBHBTGVSOBDFJGZPVUVSOPGGUIFQPXFS
TVQQMZUVSOPGGUIFHBT
IMPORTANT
#FGPSFDPOOFDUJOHQPXFSUPUIFVOJUSFBEBOE
understand the following instructions and wiring
EJBHSBNT$PNQMFUFXJSJOHEJBHSBNTBSFBUUBDIFEPO
UIFJOTJEFPGUIFDPOUSPMDFOUFSEPPST
IMPORTANT
"MMXJSJOHTIPVMECFEPOFJOBDDPSEBODFXJUIUIFMBUFTU
FEJUJPOPGUIF/BUJPOBM&MFDUSJD$PEF"/4*/'1"ø
BOEBOZMPDBMDPEFTUIBUNBZBQQMZ*O$BOBEBXJSJOH
TIPVMECFEPOFJOBDDPSEBODFXJUIUIF$BOBEJBO
&MFDUSJDBM$PEF
IMPORTANT
5IFFRVJQNFOUNVTUCFQSPQFSMZHSPVOEFEBOE
CPOEFE"OZXJSJOHSVOOJOHUISPVHIUIFVOJUJOUIF
BJSTUSFBNNVTUCFQSPUFDUFECZNFUBMDPOEVJUNFUBM
DMBEDBCMFPSSBDFXBZT
CAUTION
*GSFQMBDFNFOUXJSFJTSFRVJSFEJUNVTUIBWFB
UFNQFSBUVSFSBUJOHPGBUMFBTU$FYDFQUGPSBO
FOFSHZDVUPGGPSTFOTPSMFBEXJSFXIJDINVTUCFSBUFE
UP$
DANGER
)JHIWPMUBHFFMFDUSJDBMJOQVUJTOFFEFEGPSUIJT
FRVJQNFOU5IJTXPSLTIPVMECFQFSGPSNFECZB
qualified electrician.
CAUTION
"OZXJSJOHEFWJBUJPOTNBZSFTVMUJOQFSTPOBMJOKVSZPS
QSPQFSUZEBNBHF.BOVGBDUVSFSJTOPUSFTQPOTJCMF
GPSBOZEBNBHFUPPSGBJMVSFPGUIFVOJUDBVTFECZ
incorrect final wiring.
Electrical Information
Determine the Size of the Main Power
Lines
The unit’s nameplate states the voltage and the unit’s
.$"5IFNBJOQPXFSMJOFTUPUIFVOJUTIPVMECFTJ[FE
BDDPSEJOHMZ5IFOBNFQMBUFJTMPDBUFEPOUIFPVUTJEFPG
the unit on the control panel side.
Determine the Size of Electric Heater
Wiring
"OPQUJPOBMFMFDUSJDIFBUFSNBZSFRVJSFBTFQBSBUF
QPXFSTVQQMZ5IFQPXFSDPOOFDUJPOTIPVMECFNBEF
UPUIFGBDUPSZQSPWJEFEFMFDUSJDIFBUFSEJTDPOOFDUBOE
NVTUCFDPNQBUJCMFXJUIUIFSBUJOHTPOUIFOBNFQMBUF
TVQQMZQPXFSWPMUBHFQIBTFBOEBNQFSBHF$POTVMU
"/4*/'1"BOE$4"$GPSQSPQFSDPOEVDUPS
sizing.
Provide the Opening(s) for the Electrical
Connections
&MFDUSJDBMPQFOJOHTWBSZCZVOJUTJ[FBOEBSSBOHFNFOU
BOEBSFmFMETVQQMJFE
Connect the Power Supplies
$POOFDUUIFNBJOQPXFSMJOFTBOEFMFDUSJDIFBUFSQPXFS
MJOFTUPUIFEJTDPOOFDUTXJUDIFTPSUFSNJOBMCMPDLT
BOENBJOHSPVOEJOHMVHT5PSRVFmFMEDPOOFDUJPOTUP
manufacturer’s recommendations.
Wire the Optional Convenience Outlet
The convenience outlet requires a separate 115V power
TVQQMZDJSDVJU5IFDJSDVJUNVTUJODMVEFTIPSUDJSDVJU
QSPUFDUJPOXIJDINBZOFFEUPCFTVQQMJFECZPUIFST
Connect Field-Wired Low Voltage
Components
.PTUGBDUPSZTVQQMJFEFMFDUSJDBMDPNQPOFOUTBSF
prewired. To determine what electrical accessories
SFRVJSFBEEJUJPOBMmFMEXJSJOHSFGFSUPUIFVOJUTQFDJmD
wiring diagram located on the inside of the control
center access door.
5IFMPXWPMUBHFDPOUSPMDJSDVJUJT7"$BOEDPOUSPM
XJSJOHTIPVMEOPUFYDFFEPINT
$POUSPMXJSFTTIPVMEOPUCFSVOJOTJEFUIFTBNFDPOEVJU
BTUIBUDBSSZJOHUIFTVQQMZQPXFS.BLFTVSFUIBU
mFMETVQQMJFEDPOEVJUEPFTOPUJOUFSGFSFXJUIBDDFTT
QBOFMPQFSBUJPO"MMMPXWPMUBHFXJSJOHTIPVMECFSVOJO
DPOEVJUXIFSFWFSJUNBZCFFYQPTFEUPUIFXFBUIFS
*GXJSFSFTJTUBODFFYDFFETPINTBOJOEVTUSJBM
TUZMFQMVHJOSFMBZTIPVMECFBEEFEUPUIFVOJUDPOUSPM
DFOUFSBOEXJSFEJOQMBDFPGUIFSFNPUFTXJUDIUZQJDBMMZ
CFUXFFOUFSNJOBMCMPDLT3BOE(POUIFUFSNJOBMTUSJQ
5IFSFMBZNVTUCFSBUFEGPSBUMFBTUBNQTBOEIBWFB
7"$DPJM'BJMVSFUPDPNQMZXJUIUIFTFHVJEFMJOFTNBZ
DBVTFNPUPSTUBSUFSTUPiDIBUUFSwPSOPUQVMMJOXIJDI
can cause contactor failures and/or motor failures.
Field-Provided Disconnect
*GmFMEJOTUBMMJOHBOBEEJUJPOBMEJTDPOOFDUTXJUDIJU
is recommended that there is at least four feet of
TFSWJDFSPPNCFUXFFOUIFTXJUDIBOETZTUFNBDDFTT
QBOFMT8IFOQSPWJEJOHPSSFQMBDJOHGVTFTJOBGVTJCMF
EJTDPOOFDUVTFEVBMFMFNFOUUJNFEFMBZGVTFTBOETJ[F
according to the rating plate.
9
Packaged Rooftop Ventilator
®

Plumbing / Piping Overview
Split DX / Water Coil Connections
$POOFDUJOHQJQFTBSFJOUFSOBMMZDPOOFDUFEPOVOJUTUIBU
BSFPSEFSFEXJUIFJUIFSTQMJU%9PSXBUFSDPJMT
Condensate Drain Trap
This unit is equipped with a stainless steel condensate
QBOXJUIBTUBJOMFTTTUFFMDPOOFDUJPO*UJTJNQPSUBOU
UIBUUIFESBJODPOOFDUJPOCF
mUUFEXJUIB1USBQUPFOTVSF
proper drainage of condensate
while maintaining internal
static pressures and to prevent
NJHSBUJPOPGTFXFSHBTCBDL
into the unit.
"1USBQBTTFNCMZLJUJT
supplied with each unit and is to
CFBTTFNCMFEBOEJOTUBMMFEBTMPDBMDPOEJUJPOTSFRVJSF
BOEBDDPSEJOHUPUIFBTTFNCMZJOTUSVDUJPOTQSPWJEFE
XJUIUIF1USBQ*GMPDBMBOEBSFBDPEFTQFSNJUUIF
DPOEFOTBUFNBZCFESBJOFECBDLPOUPUIFSPPGCVUB
ESJQQBETIPVMECFQSPWJEFECFOFBUIUIFPVUMFU*GMPDBM
and area codes require a permanent drain line, it should
CFGBCSJDBUFEBOEJOTUBMMFEJOBDDPSEBODFXJUI#FTU
1SBDUJDFTBOEBMMDPEFT
*OTPNFDMJNBUFTJUXJMMCFOFDFTTBSZUPQSPWJEFGSFF[F
QSPUFDUJPOGPSUIF1USBQBOEESBJOMJOF5IF1USBQ
TIPVMECFLFQUmMMFEXJUIXBUFSPSHMZDPMTPMVUJPOBU
BMMUJNFTBOEJUTIPVMECFQSPUFDUFEGSPNGSFF[JOHUP
QSPUFDUUIF1USBQGSPNEBNBHF*GTFWFSFXFBUIFS
DPOEJUJPOTPDDVSJUNBZCFOFDFTTBSZUPGBCSJDBUFB1
trap and drain line of metal and install a heat tape to
prevent freezing.
10 Packaged Rooftop Ventilator ®

Control Center Components
Main Control Center Components
5IJTJTBUZQJDBMJOTUBMMBUJPO$PNQPOFOUTBOEUIFJS
MPDBUJPOTXJMMWBSZ
High Voltage Side
  1PXFS%JTUSJCVUJPO
#MPDLIJHIWPMUBHF
TVQQMZJTUFSNJOBUFE
IFSF
  'VTF)PMEFST
  1IBTF.POJUPS
4. VFD
  $PNQSFTTPS.PUPS
$POUBDUPST
  $POEFOTJOH'BO
.PUPS$POUBDUPST
7. Transformer
  5FSNJOBM4USJQ
Low Voltage Side
  %%$$POUSPMMFS
-PX7PMUBHF
5FSNJOBM4USJQ
3FMBZT
%JSUZ'JMUFS4XJUDI
Optional Indirect Gas-Fired Furnace
/PUF*OTPNFNPEFMTUXPGVSOBDFTBSFJOTUBMMFEUP
provide greater output. When two furnaces are installed,
UIFZBSFJOQBSBMMFMBOECPUIXJMMPQFSBUFBUUIFTBNF
UJNFBOEUIFTBNFPVUQVU#PUIGVSOBDFTXJMMIBWF
identical controls.
  4JOHMF4UBHF7BMWF
  .PEVMBUJOH7BMWF
  *OQVU$POWFSUFS
  '9$POUSPMMFSNPEVMBUFTIFBUBOETXJUDIFTFOUJSF
VOJUPOPGG
  4QBSL(FOFSBUPSIBTIJHIWPMUBHFQSFTFOU
6. Transformer
  $PNCVTUJPO#MPXFS
  #VSOFS.BOJGPME
  $PMMFDUPS#PY
For further information on the optional furnace and its
DPOUSPMDFOUFSTFFUIF*OEJSFDU(BT'JSFE)FBUM0.
shipped with the unit.
11
Packaged Rooftop Ventilator
®

Phase Monitor
5IFVOJUDPOUSPMDJSDVJUSZJODMVEFTBQIBTFNPOJUPSUIBU
DPOTUBOUMZDIFDLTGPSQIBTF
SFWFSTBMQIBTFJNCBMBODFMPTT
PGQIBTFPSBQPXFSCSPXOPVU
*USFRVJSFT7"$UPPQFSBUF
and when it detects a fault, it
DVUTPGGUIF7"$UIBUHPFTUP
the low voltage terminal strip,
UIFSFCZTIVUUJOHPGGBMMNPUPST Typical Phase Monitor
Component Operation
Supply Fan VFD Sequence
Optional Room CO2 Sensor: 5IF%%$DPOUSPMMFSXJMM
NPEVMBUFUIFTVQQMZGBOCBTFEPOBDPNQBSJTPOPGUIF
$0TFUQPJOUUPUIFBDUVBM$0MFWFMTSFQPSUFEGSPN
UIFTFOTPS.FDIBOJDBMIJHITUBUJDQSPUFDUJPODVUPGGT
NVTUCFJOTUBMMFECZPUIFSTUPQSPUFDUUIFTZTUFNBOE
FRVJQNFOUGSPNPWFSQSFTTVSJ[BUJPO
Optional Duct Static Pressure Sensor: 5IF%%$
DPOUSPMMFSXJMMNPEVMBUFUIFTVQQMZGBOCBTFEPOB
comparison of the duct static pressure set point to
the actual duct static pressure level reported from
UIFTFOTPS.FDIBOJDBMIJHITUBUJDQSPUFDUJPODVUPGGT
NVTUCFJOTUBMMFECZPUIFSTUPQSPUFDUUIFTZTUFNBOE
FRVJQNFOUGSPNPWFSQSFTTVSJ[BUJPO5IFNBOVGBDUVSFS
EPFTOPUBTTVNFSFTQPOTJCJMJUZGPSUIJT
Optional Building Static Pressure Sensor: 5IFTVQQMZ
GBOJTNPEVMBUFECBTFEVQPOUIFTJHOBMGSPNBCVJMEJOH
TUBUJDQSFTTVSFTFOTPS5IF%%$DPOUSPMMFSXJMMNPEVMBUF
UIFTVQQMZGBOCBTFEPOBDPNQBSJTPOPGUIFCVJMEJOH
TUBUJDQSFTTVSFTFUQPJOUUPUIFBDUVBMCVJMEJOHTUBUJD
pressure level reported from the sensor.
Optional Exhaust Fan VFD Sequence
Optional Building Static Pressure Sensor: The
FYIBVTUGBOJTNPEVMBUFECBTFEVQPOUIFTJHOBMGSPNB
CVJMEJOHTUBUJDQSFTTVSFTFOTPS5IF%%$DPOUSPMMFSXJMM
NPEVMBUFUIFFYIBVTUGBOCBTFEVQPOBDPNQBSJTPO
PGUIFCVJMEJOHTUBUJDQSFTTVSFMFWFMSFQPSUFEGSPNUIF
sensor.
Optional Outdoor Air Damper Tracking: 5IF%%$
DPOUSPMMFSXJMMQSPQPSUJPOBMMZNPEVMBUFUIFFYIBVTUGBO
CBTFEVQPOUIFPVUEPPSBJSEBNQFSQPTJUJPO
Variable Frequency Drive (VFD)
*GB7'%XBTQSPWJEFEBOEJOTUBMMFEBUUIFGBDUPSZJUIBT
CFFOQSFTFUUPDPOUSPMUIFTQFFEPGUIFCMPXFSNPUPS
for optimum performance. The motor speed needs to
CFWFSJmFEEVSJOHUFTUBOE
CBMBODFPGUIFVOJU
*GUIFTZTUFNXBTDPOmHVSFE
GPS$POTUBOU"JS7PMVNF$"7
the VFD will operate in an ON
/ OFF fashion and the speed
PGUIFNPUPSXJMMOPUDIBOHF*G
UIFTZTUFNXBTDPOmHVSFEGPS
7BSJBCMF"JS7PMVNF7"7UIF
%%$XJMMDPOTUBOUMZNPOJUPS
operating conditions and
provide a signal to the VFD,
changing the VFD output as needed.
5IF7'%NBZBMUFSOBUJWFMZCFDPOOFDUFEUPBOFYUFSOBM
TJHOBMTVDIBTQSPWJEFECZB#.4BOECFPQFSBUFECZB
7%$PSBN"JOQVU
Typical Variable
Frequency Drive (VFD)
12 Packaged Rooftop Ventilator ®

Factory-Installed Refrigeration System Components
1. Thermostatic Expansion Valve (TXV)
&BDIVOJUJTFRVJQQFEXJUIB5IFSNBM&YQBOTJPO
Valve on each refrigerant circuit. The valve controls
UIFnPXPGMJRVJESFGSJHFSBOUFOUFSJOHUIFFWBQPSBUPS
DPJMCZNBJOUBJOJOHBDPOTUBOUGBDUPSZTFUTVQFSIFBU
PG¡'5IFWBMWFJTBEKVTUBCMFBOEJTMPDBUFEPO
UIFTJEFPGUIFFWBQPSBUPSDPJMBOEDBOCFBDDFTTFE
through the coil panel access door.
2. Evaporator Coil
3. Low Limit Pressure Switch
5IFTXJUDIJTJOTUBMMFEJOUIFTVDUJPOMJOFBOEEJTBCMFT
UIF%9TZTUFNXIFOUIFTVDUJPOQSFTTVSFESPQT
CFMPXUIFTFUQPJOU5IFTXJUDIXJMMBVUPSFTFUXIFO
UIFQSFTTVSFSJTFTBCPWFUIFBVUPSFTFUTFUQPJOU
4. Compressors
5. Condensing Coil
6. Condenser Fans
7. High Limit Pressure Switch
The switch opens when refrigerant pressure
JODSFBTFTBCPWFUIFTFUQPJOUJOUIFMJRVJEMJOFBOEJU
then requires a manual reset.
8. Head Pressure Cycle Switch
9. Liquid Line Filter Drier
Evaporator Coil
Reheat Coil
Condenser Coil
M
1
2
3
4
10
8
9
7
11
6
5
Circuit A
Check Valve
12
10. Hot Gas Bypass Valve (optional)
0OVOJUTFRVJQQFEXJUIIPUHBTCZQBTTIPUHBT
GSPNUIFDPNQSFTTPSJTJOKFDUFEJOUPUIFMJRVJEMJOF
PGUIFFWBQPSBUPSDPJMBGUFSUIF597
Valve Adjustment - 5PBEKVTUUIFWBMWFDPOOFDU
BQSFTTVSFHBVHFUPUIFTVDUJPOMJOFBOECMPDLUIF
entering air to the evaporator coil. The valve should
CFHJOUPPQFOXIFOUIFTVDUJPOQSFTTVSFESPQTUP
BQQSPYJNBUFMZ14*(GPS3"UIFWBMWFXJMM
GFFMXBSNUPUIFUPVDI"EKVTUNFOUTBSFNBEFCZ
mSTUSFNPWJOHUIFDBQPOUIFCPUUPNPGUIFWBMWF
BOEUIFOUVSOJOHUIFBEKVTUJOHTUFNDMPDLXJTFUP
JODSFBTFUIFTFUUJOHQSFTTVSFDPVOUFSDMPDLXJTF
UPEFDSFBTF"MMPXTFWFSBMNJOVUFTCFUXFFO
BEKVTUNFOUTGPSUIFTZTUFNUPTUBCJMJ[F8IFO
BEKVTUNFOUJTDPNQMFUFSFQMBDFUIFDBQPOUIF
valve.
11. Reheat Valve (optional)
6OJUTFRVJQQFEXJUIBSFIFBUDPJMVTFBUISFF
XBZWBMWFXJUIBDUVBUPSUPDPOUSPMUIFTVQQMZ
air discharge temperature of the unit during
EFIVNJEJmDBUJPONPEF5IFVOJUDPOUSPMMFSQSPWJEFT
B7%$TJHOBMUPDPOUSPMUIFBNPVOUPGSFIFBU
UPNFFUUIFTVQQMZUFNQFSBUVSFTFUQPJOU
12. Liquid Receiver (optional)
13
Packaged Rooftop Ventilator
®

Start-Up Unit
DANGER
&MFDUSJDTIPDLIB[BSE$BODBVTFJOKVSZPSEFBUI
#FGPSFBUUFNQUJOHUPQFSGPSNBOZTFSWJDFPS
maintenance, turn the electrical power to unit to OFF
BUEJTDPOOFDUTXJUDIFT6OJUNBZIBWFNVMUJQMF
power supplies.
CAUTION
Use caution when removing access panels or other
VOJUDPNQPOFOUTFTQFDJBMMZXIJMFTUBOEJOHPOB
MBEEFSPSPUIFSQPUFOUJBMMZVOTUFBEZCBTF"DDFTT
QBOFMTBOEVOJUDPNQPOFOUTDBOCFIFBWZBOETFSJPVT
JOKVSZNBZPDDVS
CAUTION
%POPUPQFSBUFXJUIPVUUIFGJMUFSTBOECJSETDSFFOT
JOTUBMMFE5IFZQSFWFOUUIFFOUSZPGGPSFJHOPCKFDUT
TVDIBTMFBWFTCJSETFUD
CAUTION
Do not run unit during construction phase. Damage to
JOUFSOBMDPNQPOFOUTNBZSFTVMUBOEWPJEXBSSBOUZ
WARNING
t 6OJUXBTGBDUPSZUFTUFE"MMCMPXFSTGBOT
BOEDPNQSFTTPSTBSFTFUVQUPSVODPSSFDUMZ
XIFOTVQQMJFEQPXFS*GBOZPOFGBOJTSVOOJOH
CBDLXBSETPSUIFDPNQSFTTPSJTNBLJOHMPVE
OPJTFTJNNFEJBUFMZUVSOPGGUIFQPXFS4XJUDIUXP
leads on the incoming power to the disconnect.
This will ensure proper operation of the unit.
'BJMVSFUPDPNQMZNBZEBNBHFUIFDPNQSFTTPST
BOEWPJEUIFXBSSBOUZ
t %POPUKVNQFSBOZTBGFUZEFWJDFTXIFOPQFSBUJOH
UIFVOJU5IJTNBZEBNBHFDPNQPOFOUTXJUIJOPS
DBVTFTFSJPVTJOKVSZPSEFBUI
t %POPUPQFSBUFDPNQSFTTPSXIFOUIFPVUEPPS
UFNQFSBUVSFJTCFMPX'
t %POPUTIPSUDZDMFUIFDPNQSFTTPS"MMPX
NJOVUFTCFUXFFOiPOwDZDMFTUPQSFWFOU
compressor damage.
t %9TZTUFNJTDIBSHFEXJUISFGSJHFSBOU4UBSUVQ
NVTUCFQFSGPSNFECZ&1"$FSUJGJFE5FDIOJDJBO
&WFSZJOTUBMMBUJPOSFRVJSFTBDPNQSFIFOTJWFTUBSUVQ
UPFOTVSFQSPQFSPQFSBUJPOPGUIFVOJU"TQBSUPGUIBU
QSPDFTTUIFGPMMPXJOHDIFDLMJTUNVTUCFDPNQMFUFEBOE
JOGPSNBUJPOSFDPSEFE4UBSUJOHVQUIFVOJUJOBDDPSEBODF
XJUIUIJTDIFDLMJTUXJMMOPUPOMZFOTVSFQSPQFSPQFSBUJPO
CVUXJMMBMTPQSPWJEFWBMVBCMFJOGPSNBUJPOUPQFSTPOOFM
QFSGPSNJOHGVUVSFNBJOUFOBODF4IPVMEBOJTTVFBSJTF
XIJDISFRVJSFTGBDUPSZBTTJTUBODFUIJTDPNQMFUFE
EPDVNFOUXJMMBMMPXVOJUFYQFSUTUPQSPWJEFRVJDLFS
SFTPMWF2VBMJmFEQFSTPOOFMTIPVMEQFSGPSNTUBSUVQUP
ensure safe and proper practices are followed.
6OJU.PEFM/P ___________________________________
6OJU4FSJBM/P ____________________________________
&OFSHZ8IFFM%BUF$PEF __________________________
$PNQSFTTPS.PEFM/P __________________________
$PNQSFTTPS.PEFM/P __________________________
4UBSU6Q%BUF ____________________________________
4UBSU6Q1FSTPOOFM/BNF __________________________
4UBSU6Q$PNQBOZ ________________________________
1IPOF/VNCFS ___________________________________
WARNING
1SJPSUPTUBSUJOHVQUIFVOJUQPXFSNVTUCFFOFSHJ[FE
for 24 hours without a call for cool to allow the
DPNQSFTTPSDSBOLDBTFIFBUFSTUJNFUPCPJMPGGBOZ
liquid refrigerant present in the compressor.
14 Packaged Rooftop Ventilator ®

SPECIAL TOOLS REQUIRED
t 7PMUBHF.FUFSXJUIXJSFQSPCFT
t "NQFSBHF.FUFS
t 1SFTTVSF(BVHFToSFGSJHFSBOU
t 5BDIPNFUFS
t 5IFSNPNFUFS
t *ODMJOFNBOPNFUFSPSFRVJWBMFOU
Start- Up Procedure
5IFVOJUXJMMCFJOPQFSBUJPOBMNPEFEVSJOHTUBSUVQ6TF
OFDFTTBSZQSFDBVUJPOTUPBWPJEJOKVSZ"MMEBUBNVTUCF
collected while the unit is running.
 .BLFTVSF1SF4UBSU6QDIFDLMJTUJTDPNQMFUF
 +VNQFS3UP(3UP:BOE3UP:JGBQQMJDBCMF
POUIFDPOUSPMCPBSE
 5VSOUIFEJTDPOOFDUPO"GUFSNJOVUFT
DPNQSFTTPSTXJMMDPNFPO.BLFTVSFBMMGBOTBOE
compressors are rotating the correct direction.
 "MMPXUIFVOJUUPSVOVOUJMUIFSFGSJHFSBOUTZTUFN
TUBCJMJ[FT"QQSPYJNBUFMZNJOVUFT
Voltage Imbalance
*OBQIBTFTZTUFNFYDFTTJWFWPMUBHFJNCBMBODF
CFUXFFOQIBTFTXJMMDBVTFNPUPSTUPPWFSIFBUBOE
FWFOUVBMMZGBJM.BYJNVNBMMPXBCMFJNCBMBODFJT
5PEFUFSNJOFWPMUBHFJNCBMBODFVTFSFDPSEFEWPMUBHF
measurements in this formula.
,FZ 777MJOFWPMUBHFTBTNFBTVSFE
 7"BWFSBHF777
 7%-JOFWPMUBHF77PS7UIBU
 EFWJBUFTGBSUIFTUGSPNBWFSBHF7"
'PSNVMB 7PMUBHF*NCBMBODF<Y7"7%>7"
Pre-Start-Up Checklist
%JTDPOOFDUBOEMPDLPVUBMMQPXFSTXJUDIFT
 3FNPWFBOZGPSFJHOPCKFDUTUIBUBSFMPDBUFEJOUIF
unit.
 $IFDLBMMGBTUFOFSTTFUTDSFXTBOEMPDLJOHDPMMBST
POUIFGBOTCFBSJOHTESJWFTNPUPSCBTFTBOE
accessories for tightness.
 3PUBUFUIFGBOXIFFMTBOEFOFSHZSFDPWFSZXIFFMT
CZIBOEBOEFOTVSFOPQBSUTBSFSVCCJOH
 'JMUFSTDBOMPBEVQXJUIEJSUEVSJOHCVJMEJOH
DPOTUSVDUJPO3FQMBDFBOZEJSUZQMFBUFEGJMUFSTBOE
DMFBOUIFBMVNJOVNNFTIGJMUFSTJOUIFJOUBLFIPPE
 7FSJGZUIBUOPONPUPSJ[FEEBNQFSTPQFOBOEDMPTF
QSPQFSMZ
 $IFDLUIFUJHIUOFTTPGBMMGBDUPSZXJSJOH
connections.
 7FSJGZDPOUSPMXJSFHBVHF
 7FSJGZEJBNFUFSTFBMTFUUJOHTPOUIFFOFSHZSFDPWFSZ
wheel.
 7FSJGZQSPQFSESBJOUSBQJOTUBMMBUJPO
 $IFDLDPOEFOTJOHGBOTGPSBOZEBNBHFPS
NJTBMJHONFOU4QJOUIFCMBEFTBOENBLFTVSFUIFZ
EPOUDPOUBDUBOZQBSUTBOEBSFGSFFUVSOJOHXJUIPVU
BOZSFTJTUBODF
 -PPLPWFSUIFQJQJOHTZTUFN
 *OTQFDUBMMDPJMTXJUIJOUIFVOJU'JOTNBZHFU
EBNBHFEJOUSBOTJUPSEVSJOHDPOTUSVDUJPO$BSFGVMMZ
TUSBJHIUFOGJOTXJUIBGJODPNC
 *GUIFSFJTBOJOEJSFDUHBTGJSFEGVSOBDFJOUIJTVOJU
SFGFSUPUIFNBOVBMQSPWJEFEXJUIUIJTVOJUGPS1SF
4UBSU6QJOGPSNBUJPO
 5IJTVOJUDPOUBJOTBDSBOLDBTFIFBUFSGPSFBDI
compressor which needs power supplied to it 24
IPVSTQSJPSUPTUBSUVQ*GTUBSUVQJTTDIFEVMFE
JOIPVSTVOMPDLUIFEJTDPOOFDUQPXFSBOE
energize unit.
15
Packaged Rooftop Ventilator
®

Line Voltage. Check at unit disconnect.
-- Volts -- Volts -- Volts
Motor Amp Draw
4VQQMZ.PUPS"NQT L1 "NQT L2 "NQT L3 "NQT
&YIBVTU.PUPS"NQT L1 "NQT L2 "NQT L3 "NQT
Fan RPM Correct fan rotation direction?
4VQQMZ'BO31. 4VQQMZ'BO Yes / No
&YIBVTU'BO31. &YIBVTU'BO Yes / No
Energy Wheel Motor
L1 "NQT L2 "NQT L3 "NQT
Condensing Fans
$POEFOTJOH'BO L1 "NQT L2 "NQT L3 "NQT
$POEFOTJOH'BO L1 "NQT L2 "NQT L3 "NQT
$POEFOTJOH'BO L1 "NQT L2 "NQT L3 "NQT
Compressors
Outdoor Air Temperature Deg F Outdoor Air Relative Humidity 3)
Return Air Temperature Deg F Return Air Relative Humidity 3)
Start-Up Checklist
Compressor 1:
________ L1 amps
________ L2 amps
________ L3 amps
________ Crankcase Heater
Superheat ________ Deg. F.
Should be between 8º and 12ºF.
Subcooling ________ Deg. F.
Should be between 12º and 17ºF.
Discharge Pressure __________ PSIG
Should be between 300 and 500 PSIG
Suction Line Pressure __________ PSIG
Should be between 100 and 135 PSIG
-JRVJE-JOF5FNQFSBUVSF  ________ Deg. F.
Suction Line Temperature ________ Deg. F.
Moisture Indicating Sight Glass
 -JRVJE7JTJCMF:FT/P
 $PMPSPG$FOUFS%PU (SFFO:FMMPX
)PU(BT#ZQBTT0QFSBUJPOBM :FT/P
Compressor 2:
________ L1 amps
________ L2 amps
________ L3 amps
________ Crankcase Heater
Superheat ________ Deg. F.
Should be between 8º and 12ºF.
Subcooling ________ Deg. F.
Should be between 12º and 17ºF.
Discharge Pressure __________ PSIG
Should be between 300 and 500 PSIG
Suction Line Pressure __________ PSIG
Should be between 100 and 135 PSIG
-JRVJE-JOF5FNQFSBUVSF  ________ Deg. F.
Suction Line Temperature ________ Deg. F.
Moisture Indicating Sight Glass
 -JRVJE7JTJCMF:FT/P
 $PMPSPG$FOUFS%PU (SFFO:FMMPX
)PU(BT#ZQBTT0QFSBUJPOBM :FT/P
16 Packaged Rooftop Ventilator ®

CAUTION
8IFOPQFSBUJOHDPOEJUJPOTPGUIFGBOBSFUPCF
DIBOHFETQFFEQSFTTVSFUFNQFSBUVSFFUDDPOTVMU
manufacturer to determine if the unit can operate
TBGFMZBUUIFOFXDPOEJUJPOT
Supply Fan (Plenum Type)
5IFVOJUDPOUBJOTPOFQMFOVNTVQQMZGBOMPDBUFEPO
UIFFOEPGUIFVOJUPQQPTJUFUIFPVUEPPSBJSJOUBLFBOE
NBZPQUJPOBMMZIBWFBSFMJFGBJSCMPXFSXIJDIJTSFGFSSFE
UPBTBOFYIBVTUCMPXFSJOUIJTEPDVNFOU&GmDJFOUGBO
QFSGPSNBODFDBOCFNBJOUBJOFECZIBWJOHUIFDPSSFDU
offset.
3FGFSUPUIFSFTQFDUJWF*OTUBMMBUJPO0QFSBUJPOBOE
.BJOUFOBODF.BOVBMTIJQQFEXJUIUIJTVOJUGPSBEEJUJPOBM
TUBSUVQBOENBJOUFOBODFJOGPSNBUJPOSFHBSEJOHUIF
plenum fan.
Start-Up Components
Fan
5IFGBOTIPVMECFDIFDLFEGPSGSFFSPUBUJPO*GBOZ
CJOEJOHPDDVSTDIFDLGPSDPODFBMFEEBNBHFBOE
GPSFJHOPCKFDUTJOUIFGBOIPVTJOH
Inlet
Cone
Wheel
Offset
Offset:1SPQFSPGGTFUPSPWFSMBQJT
BEKVTUFECZMPPTFOJOHUIFXIFFMIVC
from the shaft and moving the wheel
to the desired position along the shaft.
5IFUSBOTJUJPOCFUXFFOUIFJOMFUDPOF
and the wheel should
CFBTTIPXOUIFSFJT
a smooth feel to the
QSPmMFXIFONPWJOH
one component to the
other.
6OJU4J[F Fan Offset
JODIFT
Tolerance
JODIFT
3737& 4VQQMZ 5/32 
&YIBVTU 5/32 
3737& 4VQQMZ  
&YIBVTU  
3737& 4VQQMZ  
&YIBVTU  
Supply/Exhaust Fan
5IFPQUJPOBMFYIBVTUGBOJTBEJSFDUESJWFQMFOVN
UZQF'BOTQFFEJTDPOUSPMMFECZB7'%XIJDIJOUVSO
JTDPOUSPMMFECZUIF%%$DPOUSPMMFSPSCZBOFYUFSOBM
TJHOBM.PUPSTQFFEXJMMCFTFUPOUIF7'%EVSJOH
UIFVOJU5FTUBOE#BMBODFCVUBGUFSUIBUUIF7'%XJMM
OPUOPSNBMMZCFDIBOHFE"MXBZTDIFDLUIFNPUPS
amperage rating shown on the motor nameplate when
DIBOHJOHUIFGBO31."MMBDDFTTEPPSTNVTUCF
installed except the control center door.
Vibration
&YDFTTJWFWJCSBUJPONBZCFFYQFSJFODFEEVSJOHJOJUJBM
TUBSUVQ-FGUVODIFDLFEFYDFTTJWFWJCSBUJPODBO
DBVTFBNVMUJUVEFPGQSPCMFNTJODMVEJOHTUSVDUVSBMBOE
or component failure. The most common sources of
WJCSBUJPOBSFMJTUFE
.BOZPGUIFTFDPOEJUJPOTDBOCFEJTDPWFSFECZDBSFGVM
PCTFSWBUJPO3FGFSUPUIF5SPVCMFTIPPUJOHTFDUJPOPG
UIJTNBOVBMGPSDPSSFDUJWFBDUJPOT*GPCTFSWBUJPODBOOPU
MPDBUFUIFTPVSDFPGWJCSBUJPOBRVBMJmFEUFDIOJDJBO
VTJOHWJCSBUJPOBOBMZTJT
FRVJQNFOUTIPVMECF
consulted.
(FOFSBMMZGBOWJCSBUJPO
and noise is transmitted
to other parts of the
CVJMEJOHCZUIFEVDUXPSL5PFMJNJOBUFUIJTVOEFTJSBCMF
FGGFDUUIFVTFPGnFYJCMFDPOOFDUPSTJTSFDPNNFOEFE
Vibration Causes
Off axis or loose components
Drive component unbalance
Poor inlet / outlet conditions
Foundation stiffness
Discharge Air Temperature Sensor
6OJUTBSFTVQQMJFEXJUIB%JTDIBSHF"JS5FNQFSBUVSF
4FOTPSUIBUJTUPCFmFMEJOTUBMMFEQSJPSUPVOJUTUBSU
VQ5IFTFOTPSJTUPCFJOTUBMMFEBUMFBTUUISFFEVDU
diameters downstream of the heat exchanger. The
TFOTPSNVTUCFDPOOFDUFE
EJSFDUMZUPUIF%%$DPOUSPMMFS"MM
other sensors and low voltage
EFWJDFTBSFUPCFDPOOFDUFEUP
the low voltage terminal strip in
the control center. The discharge
air sensor is shipped loose
BOEDBOCFGPVOEJOUIFVOJUT
DPOUSPMDFOUFS4FFUIFVOJUTQFDJmDXJSJOHEJBHSBNGPS
connection locations.
Typical Discharge Air
Temperature Sensor
Fan Wheel Rotation Direction
$IFDLGPSQSPQFSXIFFMSPUBUJPOCZNPNFOUBSJMZ
FOFSHJ[JOHUIFGBO3PUBUJPOJTEFUFSNJOFECZWJFXJOH
the wheel from the drive side and should match the
SPUBUJPOEFDBMBGmYFEUPUIFGBOIPVTJOH
*GUIFXIFFMJTSPUBUJOHUIFXSPOHXBZEJSFDUJPODBOCF
SFWFSTFECZJOUFSDIBOHJOHBOZUXPPGUIFUISFFFMFDUSJDBM
MFBET$IFDLGPSVOVTVBMOPJTFWJCSBUJPOPSPWFSIFBUJOH
PGUIFCFBSJOHT3FGFSUPUIF5SPVCMFTIPPUJOHQPSUJPOPG
UIJTNBOVBMJGBQSPCMFNEFWFMPQT
17
Packaged Rooftop Ventilator
®

Optional Energy Wheel
Start-Up
*GTFMFDUFEUIFFOFSHZXIFFMJTJOTUBMMFEJOUIFVOJUT
BJSTUSFBNXJUIPOFIBMGPGUIFXIFFMJOUIFJOUBLF
BJSTUSFBNBOEPOFIBMGJOUIFFYIBVTUBJSTUSFBN"JS
MFBLBHFCFUXFFOUIFUXPBJSTUSFBNTIBTUPCFLFQUUP
BNJOJNVNBOEUIFXIFFMIBTBJSTFBMTUIBUNVTUCF
BEKVTUFEGPSUIBUQVSQPTF5IFTFBMTNVTUCFBEKVTUFE
BUUJNFPGTUBSUVQ
Drive Belt
*OTQFDUUIFESJWFCFMU.BLFTVSFUIFCFMUSJEFTTNPPUIMZ
JOUIFQVMMFZBOEBSPVOEUIFPVUTJEFPGUIFXIFFM/PUF
the directional arrow and data information shown in the
image.
Adjust the Air Seals
.BLFTVSFUIFVOJUQPXFSTVQQMZJTMPDLFEPVU
Disconnect the wiring to the wheel module and pull
UIFXIFFMDBTTFUUFPVUPGUIFDBCJOFUPOJUTUSBDLT
-BSHFDBTTFUUFTBSFOPUSFNPWBCMF5IFOTMPXMZSPUBUF
UIFXIFFMCZIBOEUPNBLFTVSFUIFSFJTOPCJOEJOHPS
misalignment.
There is a perimeter seal located around the outside of
the wheel and a diameter seal across the face of the
XIFFMPOCPUITJEFT$IFDLUPNBLFTVSFUIBUBMMBJS
seals are secure and in good condition.
"EKVTUUIFBJSTFBMTCZMPPTFOJOHBMMUIFBJSTFBMSFUBJOJOH
TDSFXTPOUIFCFBSJOHTVQQPSU6TJOHBQJFDFPGQBQFS
BTBGFFMFSHBVHFBEKVTUUIFTFBMTTPUIFZBMNPTUUPVDI
UIFGBDFPGUIFXIFFMXIJMFUVHHJOHTMJHIUMZPOUIFQBQFS
8IFOUIFXIFFMJTSPUBUFEUIFSFTIPVMECFBTMJHIUUVH
on the paper. Tighten the screws, repeat the steps on
the other set of seals.
1VTIUIFXIFFMDBTTFUUFCBDLJOUPUIFVOJUBOEQMVH
JOUIFQPXFSDPOOFDUPS5VSOUIFNBJOQPXFSTVQQMZ
CBDLPOBOEUIFOPCTFSWFUIFPQFSBUJPOPGUIFXIFFMCZ
PQFOJOHUIFXIFFMBDDFTTEPPSTMJHIUMZ3FNPWFmMUFSTJG
OFDFTTBSZUPPCTFSWFUIFXIFFM
Sequence of Operation
Optional Economizer5IFFDPOPNJ[FSXJMMCFMPDLFE
PVUXIFOUIFPVUTJEFBJSJT¡'¡'IZTUFSFTJT
BEKVTUBCMFUIFVOJUJTPQFSBUJOHJOEFIVNJEJmDBUJPO
NPEFPSUIFSFJTBDBMMGPSIFBUJOH
tStop Wheel:8IFOFDPOPNJ[FSNPEFJTFOBCMFE
and there is a signal for cooling, the wheel will stop
rotating to allow free cooling.
tIdle Wheel:8IFOFDPOPNJ[FSNPEFJTFOBCMFEBOE
there is a signal for cooling, the wheel will rotate at
BNJOJNVNTQFFEUPQSFWFOUQBSUJDMFCVJMEVQPOUIF
wheel.
tModulate Wheel: When economizer mode is
FOBCMFEBOEUIFSFJTBTJHOBMGPSDPPMJOHUIF
wheel VFD modulates wheel speed to maintain the
discharge temperature set point.
Optional Frost Control5IF%%$DPOUSPMMFSXJMM
output a signal when wheel frosting is occurring which
JTEFUFSNJOFECZBUFNQFSBUVSFTFUQPJOU0"¡F –
2¡'IZTUFSJTJTBEKVTUBCMFBOEXIFFMQSFTTVSFESPQ
increase.
tPreheat: When frosting is occurring, the preheater
is energized to defrost the wheel. Once the pressure
ESPQEFDSFBTFTCFMPXUIFTFUQPJOUUIFQSFIFBUFSJT
EFFOFSHJ[FE
tTimed Exhaust: When frosting is occurring, the
TVQQMZCMPXFSJTDZDMFEPGG5IFFYIBVTUCMPXFS
shall continue to run, allowing the warm exhaust
BJSUPEFGSPTUUIFXIFFM"GUFSUIFNJOVUFDZDMF
UIFTVQQMZGBOJTSFFOFSHJ[FEUPDPOUJOVFOPSNBM
operation.
t Modulating Wheel:*ODMVEFTB7'%JOBEEJUJPO
to the thermostat and pressure sensor. When
modulating wheel frost control is initiated, the VFD
XJMMSFEVDFUIFTQFFEPGUIFXIFFMXIJDILFFQTUIF
exhaust air condition from reaching saturation, thus,
FMJNJOBUJOHDPOEFOTBUJPOBOEGSPTUJOH*GUIFPVUEPPS
air temperature is greater than the frost threshold
temperature OR the pressure differential is less
than the set point, the wheel will run at full speed.
*GUIFPVUEPPSBJSUFNQFSBUVSFJTMFTTUIBOUIFGSPTU
UISFTIPMEUFNQFSBUVSF"/%UIFQSFTTVSFEJGGFSFOUJBM
is greater than the set point, the wheel will run at
reduced speed until the pressure differential falls
CFMPXUIFTFUQPJOU5IFUFNQFSBUVSFBOEQSFTTVSF
EJGGFSFOUJBMTFUQPJOUTBSFTFUBUUIFGBDUPSZCVUBSF
mFMEBEKVTUBCMF5IF7'%XJMMCFGVMMZQSPHSBNNFE
BUUIFGBDUPSZ
Alarms Indication%%$TIBMMIBWFPOFEJHJUBMPVUQVU
GPSSFNPUFJOEJDBUJPOPGBOBMBSNDPOEJUJPO1PTTJCMF
BMBSNTJODMVEF
tWheel Rotation Alarm:.POJUPSTXIFFMSPUBUJPO
BOETFOETBTJHOBMUPDPOUSPMMFSBGUFSBTFDPOE
UJNFEFMBZXJUIOPSPUBUJPOUIBUTJHOBMTUIF%%$UP
activate an alarm.
Drive Belt
Adjustable
Air Seals
Label
showing
cassette
serial # and
date code
Bearing
Support
Drive Pulley
Retaining
Screws
18 Packaged Rooftop Ventilator ®

Optional Energy Wheel Maintenance
Inspection
5IFXIFFMTIPVMECFJOTQFDUFETFNJBOOVBMMZJO
accordance with the maintenance
schedule. .BJOUFOBODFPGUIFXIFFM
DPOTJTUTNBJOMZPGJOTQFDUJOHUIF
wheel for cleanliness and then
DIFDLJOHUIFESJWFNPUPSCFMUBOE
QVMMFZGPSXFBS*GUIFXIFFMMBZFST
BQQFBSEJSUZUIFXIFFMTIPVMECF
EJTBTTFNCMFEBOEDMFBOFE
The wheel rotates through the two
airstreams which are moving in
opposite directions, the wheel is
TFMGDMFBOJOHVQUPBQPJOU*GUIF
XIFFMNFEJBCFDPNFTCMPDLFECZ
EJSUPSEVTUPSJGUIFNFEJBDPMMFDUTBMBZFSPGTNPLF
SFTJEVFPSBOPJMZmMNUIFFOFSHZUSBOTGFSFGmDJFODZ
drops.
5IFNBJOGBDUPSJOUIFGSFRVFODZPGDMFBOJOHJTUIF
DMFBOMJOFTTPGUIFBJS*GBJSmMUFSTBSFOPUDIBOHFE
GSFRVFOUMZUIFXIFFMXJMMDPMMFDUDPOUBNJOBOUTBOEXJMM
UIFOIBWFUPCFDMFBOFE
Wheel Disassembly
8IFFMTBSFQBSUPGBDBTTFUUFUIBUNBZCFQVMMFEGSPN
UIFVOJUGPSFBTZBDDFTT5IFSFNBZCFBTNBMMEBNQFS
BTTFNCMZPSPUIFSDPNQPOFOUUIBUCMPDLTSFNPWBM
PGUIFDBTTFUUF#FGPSFTMJEJOHPVUUIFDBTTFUUFPS
BOZPUIFSDPNQPOFOUEJTDPOOFDUBOZQPXFSTVQQMZ
DPSEBOETFDVSFJUTPJUDBOOPUKBNPSPUIFSXJTFHFU
damaged.
&BDIXIFFMIBTSFNPWBCMFTFHNFOUTUIBUIPMEUIF
DPBUFEMBZFSTPGNFEJBBOEFBDITFHNFOUJTIFMEJO
place with two retaining clips located on the outer rim
of the wheel. When removing
more than one segment,
remove them in sequence
from opposite sides of the
XIFFMEFHSFFTBQBSU
UPSFEVDFUIFJNCBMBODF4FDVSFUIFXIFFMBHBJOTU
SPUBUJPO$BSFGVMMZSFMFBTFUIFUXPSFUBJOJOHDMJQTBOE
TXJOHUIFNGVMMZPQFO5IFTFHNFOUDBOOPXCF
SFNPWFECZQVTIJOHUIFGBDFPGUIFTFHNFOUDMPTFUP
UIFPVUFSSJNPGUIFXIFFM8IFFMTFHNFOUTBSFCVJMU
UPDMPTFUPMFSBODFTBOEUIFTFHNFOUNBZIBWFUPCF
KJHHMFEUPSFNPWFJU%POPUVTFBIBNNFSPSPUIFSXJTF
GPSDFUIFTFHNFOUCFDBVTFUIFTFBSFIJHIWBMVFJUFNT
BOEBSFOPUCVJMUUPXJUITUBOEBCVTF
8IFOFWFSSFUBJOJOHDMJQTBSFPQFOFEUIFZTIPVMECF
DMPTFEBTTPPOBTQPTTJCMF*GUIFXIFFMTIPVMESPUBUF
XIFOBDMJQJTPQFOUIFDMJQXJMMKBNBHBJOTUUIFCFBSJOH
TVQQPSUCBSBOEDPVMEDBVTFEBNBHF
Cleaning
.BJOUFOBODFPSDMFBOJOHPGUIFXIFFMTFHNFOUT
TIPVMECFEPOFXJUIUIFTFHNFOUTSFNPWFEGSPN
the wheel cassette to avoid splashing liquids or
DMFBOJOHBHFOUTJOTJEFUIFDBCJOFU*GUIFFOFSHZXIFFM
BQQFBSTFYDFTTJWFMZEJSUZJUTIPVMECFDMFBOFEUP
FOTVSFNBYJNVNPQFSBUJOHFGmDJFODZ0OMZFYDFTTJWF
CVJMEVQPGGPSFJHONBUFSJBMTOFFETUPCFSFNPWFE
DISCOLORATION AND STAINING OF ENERGY
RECOVERY WHEEL DOES NOT AFFECT ITS
PERFORMANCE.
5IPSPVHIMZTQSBZUIFXIFFMNBUSJYXJUIBIPVTFIPME
DMFBOFSTVDIBT'BOUBTUJLPSUIFFRVJWBMFOU(FOUMZ
SJOTFXJUIXBSNXBUFSBOEVTFBTPGUCSVTIUPSFNPWF
BOZIFBWZBDDVNVMBUJPOT"EFUFSHFOUXBUFSTPMVUJPO
DBOBMTPCFVTFE"WPJEBHHSFTTJWFPSHBOJDTPMWFOUT
TVDIBTBDFUPOF8IFFMTFHNFOUTDBOCFTPBLFEJOUIF
BCPWFTPMVUJPOPWFSOJHIUGPSSFNPWBMPGTUVCCPSOEJSUPS
accumulations.
"GUFSDMFBOJOHJTDPNQMFUFTIBLFFYDFTTXBUFSGSPNUIF
XIFFMPSTFHNFOUT%SZUIFXIFFMPSTFHNFOUTCFGPSF
QVUUJOHUIFNCBDLJOUPUIFDBTTFUUF
Reassembly
8IFOSFJOTUBMMJOHUIFTFHNFOUTCFTVSFUPJOTUBMMUIFN
with the correct face toward the motor side of the
cassette. Note that one face of each segment is smooth
and the other face has a reinforcing channel or support
cut into the surface.
Segment Retaining Clip
Wheel Segment
(Motor Side)
Energy Wheel
Cassette
Wheel Segment
(Pulley Side)
Energy Recovery Wheel Belt
*OTQFDUCFMUTFBDIUJNFmMUFSTBSFSFQMBDFE#FMUTUIBU
MPPLDIFXFEVQPSBSFMFBWJOHCFMUEVTUOFBSUIFNPUPS
QVMMFZNBZJOEJDBUFBQSPCMFNXJUIUIFXIFFM#FTVSFUP
JOTQFDUXIFFMGPSTNPPUIBOEVOSFTUSJDUFESPUBUJPO*GB
CFMUSFRVJSFTSFQMBDFNFOUDPOUBDUUIFMPDBM(SFFOIFDL
SFQSFTFOUBUJWF*OTUSVDUJPOTGPSSFQMBDFNFOUXJMMTIJQ
XJUIUIFOFXCFMU
Energy Recovery Wheel Bearing
*OUIFVOMJLFMZFWFOUUIBUBXIFFMCFBSJOHGBJMTUIF
CFBSJOHJTCFIJOEBSFNPWBCMFQMBUFPOUIFXIFFM
TVQQPSUCFBNTMJEFDBTTFUUFIBMGXBZPVUPGDBCJOFUUP
BDDFTT$POUBDUUIFMPDBM(SFFOIFDLSFQSFTFOUBUJWFGPS
EFUBJMFEJOTUSVDUJPOTPOIPXUPSFQMBDFUIFCFBSJOH
WARNING
Whenever performing maintenance or inspections,
BMXBZTEJTDPOOFDUUIFQPXFSTPVSDF
19
Packaged Rooftop Ventilator
®

Optional Energy Wheel – Troubleshooting
Symptom Possible Cause Corrective Action
&OFSHZXIFFM
does NOT
turn
"JSTFBMTBSFUPPUJHIU 3FGFSUP"EKVTUUIF"JS4FBMTJOUIF0QUJPOBM&OFSHZ8IFFM
4UBSU6QTFDUJPO
#SPLFOCFMU Replace.
No power to wheel motor. .BLFTVSFXIFFMESJWFJTQMVHHFEJO7FSJGZQPXFSJTBWBJMBCMF
&OFSHZ
wheel runs
JOUFSNJUUFOUMZ
Wheel motor overloads are
USJQQJOHEVFUPSVCCJOHCFUXFFO
wheel and air seals.
3FDIFDLBJSTFBMTNBLFTVSFUIFZBSFOPUUPPUJHIU4FF"EKVTU
UIF"JS4FBMTJOUIF0QUJPOBM&OFSHZ8IFFM4UBSU6QTFDUJPO
Troubleshooting – Alarms
4FWFSBMPGUIFFMFDUSPOJDDPOUSPMTJOUIFVOJUNPOJUPSUIF
TZTUFNGPSGBVMUTBOEXJMMHPJOUPBMBSNTIVUUJOHEPXO
the unit or a single function within the unit.
DDC Controller
$IFDLUIFTDSFFOPOUIF%%$GPSBOBMBSNDPOEJUJPO*G
UIF%%$JTJOBOBMBSNDPOEJUJPOBNFTTBHFXJMMTIPX
POUIF%%$TDSFFO
5IF%%$JTMPDBUFEJOUIFNBJODPOUSPMDFOUFS*GUIF
%%$JTJOBMBSNDPOEJUJPOUIF"MBSNCVUUPOXJMMCMJOL
SFE1SFTTUIF"MBSNCVUUPOUPTFFUIFTQFDJmDDPOEJUJPO
PSUPSFTFUUIF%%$3FGFSUPUIF%%$*0.GPSEFUBJMFE
JOGPSNBUJPOPOGBVMUDPEFTBOETFFUIFVOJUTQFDJmD
wiring diagram.
Phase Monitor
5IFQIBTFNPOJUPSIBTUXP-&%JOEJDBUPSMJHIUTPOF
red and one green. Green indicates proper operational
status, red indicates the unit has detected a fault and is
JOBMBSNDPOEJUJPO5IFBMBSN-&%XJMMCMJOLUPTIPXUIF
TQFDJmDGBVMUBOEUIFSFJTBDIBSUQSJOUFEPOUIFNPOJUPS
UIBUTIPXTUIFDPEFGPSUIFCMJOLJOHMJHIU5IFQIBTF
NPOJUPSJTTFMGSFTFUUJOHPODFUIFBMBSNDPOEJUJPOJT
DPSSFDUFE*UJTMPDBUFEJOUIFNBJODPOUSPMDFOUFS
Variable Frequency Drive (VFD)
7BSJBCMFGSFRVFODZESJWFTIBWFBEJTQMBZTDSFFOUIBUXJMM
TIPXBOBMBSNDPOEJUJPO*GBGBVMUTVDIBTBWPMUBHF
TQJLFPDDVSTUIF7'%XJMMHPJOUPBMBSNBOEXJMMOPU
SFTFUVOUJMBIBSESFTUBSUJTQFSGPSNFE4FFUIFVOJU
TQFDJmDNBOVGBDUVSFSTNBOVBMTVQQMJFEXJUIUIFVOJU
VFDs are located in the main control center.
Optional FX05 Furnace Controller
1SFTFOUPOMZJGBOJOEJSFDUHBTmSFEGVSOBDFPQUJPOJT
TFMFDUFE5IF'9GVSOBDFDPOUSPMMFSXJMMEJTQMBZBO
BMBSNDPOEJUJPOJGQSFTFOU5IFDPOUSPMMFSXJMMCFGPVOE
JOUIFGVSOBDFDPOUSPMDFOUFS4FFUIF*OEJSFDU(BT'JSFE
)FBU*0.BOEUIFDPOUSPMMFSNBOVGBDUVSFSTVOJUTQFDJmD
manual for further information.
Optional Digital Scroll Compressor
Controller
1SFTFOUPOMZJGQBDLBHFE%9XJUIEJHJUBMTDSPMMPQUJPOJT
selected. The controller has
UISFF-&%JOEJDBUPSMJHIUT
One is green, indicating that
it has power, one is an alarm
JOEJDBUPSUIBUXJMMnBTIBDPEF
for various alarm conditions
and the third indicates
whether the compressor
JTPQFSBUJOHJOBMPBEFEPSVOMPBEFEDPOEJUJPO4FF
UIFNBOVGBDUVSFSTVOJUTQFDJmDNBOVBMGPSGVSUIFS
information.
4FFUIF'BVMU$PEFDIBSUCFMPX5IF'BVMU$PEFDIBSU
JTBMTPQSJOUFEPOUIFCBDLPGUIFDPOUSPMMFS/PUFUIBU
JGUIFDPOUSPMMFSHFOFSBUFTFJUIFSB$PEFPSB$PEF
-PDLPVUBNBOVBMSFTFUNVTUCFQFSGPSNFE.BOVBM
3FTFUJTBDDPNQMJTIFECZTIVUUJOHPGGNBJOQPXFSUPUIF
VOJUBOEUIFOUVSOJOHJUCBDLPO
Digital Scroll Compressor
Controller Fault Codes
"MFSU$PEF 4ZTUFN
$POEJUJPO
Diagnostic
"MFSU-JHIU "DUJPO
$PEF )JHI%JTDIBSHF
Temperature Trip #MJOLT5JNFT -PDLPVU
$PEF $PNQSFTTPS
1SPUFDUPS5SJQ #MJOLT5JNFT -PDLPVU
$PEF -PDLFE3PUPS #MJOLT5JNFT -PDLPVU
$PEF %FNBOE4JHOBM
Loss #MJOLT5JNFT -PDLPVU
$PEF Discharge
Thermistor Fault #MJOLT5JNFT Reduce
$BQBDJUZ
$PEF Future /" /"
$PEF Welded
$POUBDUPS #MJOLT5JNFT Unload
$PNQSFTTPS
$PEF Low Voltage #MJOLT5JNFT 5SJQ$PNQSFTTPS
1SPUFDUJWFGBVMUTUIBUSFRVJSFNBOVBMSFTFU
20 Packaged Rooftop Ventilator ®