Maytag PPG3GD Guide d'installation

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Premium Model Shown
13 SEER / 80% AFUE
Single Package Gas Heating / Electric Cooling
*R8GD / PPG3GD SERIES
DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
FIRE OR EXPLOSION HAZARD
• Failuretofollowsafetywarningsexactlycould
resultinseriousinjuryorpropertydamage.
• Installationandservicemustbeperformed
byaqualiedinstaller,serviceagencyorthe
gassupplier.
Do not store or use gasoline or other
ammablevaporsandliquidsinthevicinity
ofthisoranyotherappliance.
WHAT TO DO IF YOU SMELL GAS
• Donottrytolightanyappliance.
• Donottouchanyelectricalswitch;donotuse
anyphoneinyourbuilding.
• Leavethebuildingimmediately.
• Immediately call your gas supplier from a
neighbor’sphone.Followthegassupplier’s
instructions.
• Ifyoucannotreachyourgassupplier,callthe
redepartment.
RISQUED’INCENDIEOUD’EXPLOSION
Le non-respect des avertissements de
sécurité pourrait entraîner des blessures
graves,lamortoudesdommagesmatériels.
L’installation et l’entretien doivent être
effectués par un installateur qualié, un
organismedeserviceou le fournisseur de
gazstaller,serviceagencyorthegassupplier.
•Nepasentreposerniutiliserdel’essenceni
d’autres vapeurs ou liquides inammables
danslevoisinagedecetappareil,nidetout
autreappareil.
QUEFAIRES’ILYAUNEODEURDEGAZ
•Nepastenterd’allumeraucunappareil.
•Netoucheràaucuninterrupteurélectrique;
n’utiliseraucuntéléphonedanslebâtiment.
•Évacuerl’immeubleimmédiatement.
•Appeler immédiatement le fournisseur de
gazenemployantletéléphoned’unvoisin.
Respecter à la lettre les instructions du
fournisseurdegaz.
•Sipersonnenerépond,appelerleservicedes
incendies.
WARNING:
AVERTISSEMENT
INSTALLATION INSTRUCTIONS
2
IMPORTANT SAFETY INFORMATION .......................3
REQUIREMENTS & CODES .......................................4
GENERAL INFORMATION .......................................... 5
Before You Install this Unit .........................................5
Locating the Equipment ............................................. 5
Combustion Air Requirements .................................. 5
Heating Load ............................................................5
COMbUSTION AIR & VENTING REQUIREMENTS ...6
General Information .................................................. 7
Vent Termination .......................................................7
CIRCULATING AIR SUPPLY ...................................... 8
Air Ducts ...................................................................8
Air Filter Requirements ............................................. 8
Unconditioned Spaces ...............................................8
Acoustical Duct Work .................................................8
UNIT INSTALLATION ..................................................9
Packaging Removal ...................................................9
Rigging & Hoisting .....................................................9
Clearances to Combustible Materials ........................9
Rooftop ......................................................................9
Ground Level .............................................................9
Condensate Drain .....................................................9
Horizontal to Downflow Conversion ........................... 9
ELECTRICAL WIRING ............................................... 10
Pre - Electrical Checklist ......................................... 11
Grounding ................................................................ 11
Line Voltage .............................................................11
Thermostat / Low Voltage Connections .................. 11
Checking Heat Anticipator Settings ......................11
Blower Speed .......................................................... 12
5-Speed ECM Motor ............................................ 12
PSC Motor ........................................................... 12
Optional Furnace Control Board Connections ........12
Electronic Air Cleaner .......................................... 12
Humidifier ............................................................. 12
GAS SUPPLY & PIPING ............................................ 13
Leak Check .............................................................. 13
High Altitude Conversion - Natural Gas .................. 14
Lp / Propane Gas Conversion ................................. 14
STARTUP & ADJUSTMENTS ................................... 16
Pre - Start Checklist ................................................ 16
Start-up Procedure .................................................. 16
Air Circulation ....................................................... 16
System Cooling .................................................... 16
System Heating .................................................... 16
Verifying & Adjusting Temperature Rise .................. 16
Verifying & Adjusting Firing Rate .............................17
Manifold Pressure Adjustment ................................17
Verifying Operation of Over-Temperature
Limit Control ............................................................ 17
Verifying Burner Operation ......................................18
Refrigerant Charging ............................................... 18
OPERATING SEQUENCE ......................................... 18
Heating Mode ..........................................................18
Cooling Mode ..........................................................19
Fan Mode ................................................................19
REPLACEMENT PARTS ............................................19
EQUIPMENT MAINTENANCE ...................................19
Cleaning of Heat Exchanger ................................... 20
Cleaning of Burners ................................................. 20
COMPONENT FUNCTIONS ...................................... 21
TROUbLESHOOTING ............................................... 21
FIGURES & TAbLES ................................................. 22
Figure 9. Unit Dimensions .................................... 22
Table 7. Center of Gravity & Shipping Weights .....22
Airflow Information ...................................................23
Table 8. Nominal Airflow Rates & Temp Rises ..... 23
Gas Information ....................................................... 24
Table 9. Gas Pipe Capacities ............................... 24
Table 10. Gas Flow Rates .................................... 24
Figure 10. Unit Gas Valve Label ...........................25
Electrical Data & Diagrams ..................................... 26
Table 11. Electrical Data .......................................26
Figure 11. Wiring Diagram (ECM Motor) ..............27
Figure 12. Wiring Diagram (PSC Motor) ..............28
Charging Tables & Charts ....................................... 29
Table 12. Charging Table for 2 Ton Units .............. 29
Table 13. Charging Table for 2.5 Ton Units ........... 29
Table 14. Charging Table for 3 Ton Units .............. 30
Table 15. Charging Table for 3.5 Ton Units ........... 30
Table 16. Charging Table for 4 Ton Units .............. 31
Figure 13. Charging Chart for 5 Ton Units ............ 31
INSTALLATION/PERFORMANCE CHECKLIST ....... 32
TAbLE OF CONTENTS
3
IMPORTANT SAFETY INFORMATION
Please read all instructions before servicing this equipment.
Pay attention to all safety warnings and any other special
notes highlighted in the manual. Safety markings are
used frequently throughout this manual to designate a
degree or level of seriousness and should not be ignored.
WARNING indicates a potentially hazardous situation that
if not avoided, could result in personal injury or death.
CAUTION indicates a potentially hazardous situation that
if not avoided, may result in minor or moderate injury or
property damage.
WARNING:
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failuretofollowsafetywarningsexactlycould
resultinseriousinjuryorpropertydamage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Beforeservicing,disconnectallelectricalpower
totheunit.
• Whenservicingcontrols,labelallwiresprior
todisconnecting.Reconnectwirescorrectly.
• Verifyproperoperationafterservicing.
WARNING:
These units are fully charged with R-410A
refrigerant and ready for installation.When
a system is installed according to these
instructions, no refrigerant charging is
required. If repairs make it necessary for
evacuation and charging, it should only be
attempted by qualied, trained personnel
thoroughlyfamiliarwiththisequipment.Some
local codes require licensed installation
service personnel to service this type of
equipment.Undernocircumstancesshouldthe
homeownerattempttoinstalland/orservice
this equipment. Failure to comply with this
warningcould result in equipment damage,
personalinjury,ordeath.
WARNING:
Donotplacecombustiblematerialonoragainst
the unit cabinet. Do not place combustible
materials, including gasoline and any other
ammablevaporsand liquids, inthevicinity
oftheunit.
WARNING:
PROPOSITION 65 WARNING: This product
contains berglass wool, a product known
to the state of California to cause cancer.
Disturbingtheinsulationofthisproductduring
installation,maintenance,orrepairwillexpose
youtoberglasswool.
• Breathingthismaterialmaycauserespiratory
irritationsormaycauselungcancer.
• Fiberglasswoolmayalsocauseeyeirritation,
skinsensitization,orotherallergicresponses
insusceptibleindividuals.
• Always wear goggles, disposable gloves,
longsleevedshirt,andappropriatebreathing
protectionwhenworkingnearthisinsulation.
Ifcontactwithskinoccurs,washimmediately
withsoapandwater.Incaseofcontactwith
eyes,ushimmediatelywithwaterforatleast
15minutes.Contactaphysicianifneeded.
WARNING:
Theinformationlistedbelowandonthenext
pagemustbefollowedduringtheinstallation,
service,andoperationofthisunit.Unqualied
individualsshouldnotattempttointerpretthese
instructionsorinstallthisequipment.Failure
tofollowsafetyrecommendationscouldresult
inpossibledamagetotheequipment,serious
per
sonalinjuryordeath
.
• Before beginning the installation, verify that the unit
model is correct for the job. The unit model number
is printed on the data label. Follow all precautions in
the literature, on tags, and on labels provided with
the equipment. Read and thoroughly understand
the instructions provided with the equipment prior to
performing the installation and operational checkout
of the equipment.
• Never test for gas leaks with an open ame. Use
a commercially available soap solution to check all
connections. See page 13.
• Installationofequipmentmayrequirebrazingoperations.
Installer must comply with safety codes and wear
appropriate safety equipment (safety glasses, work
gloves, fire extinguisher, etc.) when performing brazing
operations.
• This equipment is NOT to be used for temporary heating
of buildings or structures under construction.
• Usecautionwhenhandlingthisapplianceorremoving
components. Personal injury can occur from sharp metal
edges present in all sheet metal constructed equipment.
• Follow all precautions in the literature, on tags, and
on labels provided with the equipment. Read and
4
thoroughly understand the instructions provided with
the equipment prior to performing the installation and
operational checkout of the equipment.
• Theinstallershouldbecomefamiliarwiththeunitswiring
diagram before making any electrical connections to
the unit. See the unit wiring label or Figures 11 & 12
(pages 27 & 28).
REQUIREMENTS & CODES
• Thisequipmentmustbeinstalledinaccordancewith
instructionsoutlinedinthismanual,allapplicable
localbuildingcodes, andthecurrentrevision of
theNationalFuelGasCode(NFPA54/ANSIZ223.1)
ortheNaturalGasandPropaneInstallationCode,
CAN/CGA b149.1.
• Allelectricalwiringmustbecompletedinaccordance
with local, state and national codes and regulations
and with the National Electric Code (ANSI/NFPA 70)
or in Canada the Canadian Electric Code Part 1 CSA
C.22.1.
• The installer must comply with all local codes and
regulations which govern the installation of this type
of equipment. Local codes and regulations take
precedence over any recommendations contained in
these instructions. Consult local building codes and the
National Electrical Code (ANSI CI) for special installation
requirements.
• Thisequipmentcontainsliquidandgaseousrefrigerant
under high pressure. Installation or servicing should only
be performed by qualified trained personnel thoroughly
familiar with this type equipment.
• Installthisunitonlyinalocationandpositionasspecied
on page 5. This unit is designed only for outdoor
installations and should be located with consideration
of minimizing the length of the supply and return ducts.
Consideration should also be given to the accessibility of
fuel, electric power, service access, noise, and shade.
• Air Ducts must be installed in accordance with the
standards of the National Fire Protection Association
“Standards for Installation of Air Conditioning and
Ventilation Systems” (NFPA 90A), “Standard for
Installation of Residence Type Warm Air Heating and Air
Conditioning Systems” (NFPA 90B), these instructions,
and all applicable local codes.
• ConsultTable10(page23),andtheratingplateforthe
proper circulating air flow and temperature rise. It is
important that the duct system be designed to provide
the correct flow rates and external pressure rise. An
improperly designed duct system can result in nuisance
shutdowns, and comfort or noise issues.
• Useonlywiththetypeofgasapprovedforthisunit.
Refer to the unit rating plate.
• Provideadequatecombustionandventilationairtothe
unit. See pages 6 - 7.
• Provideadequateclearancesaroundthecombustion
air intake louvers. See Figure 1 (page 5).
• Combustion products must be discharged outdoors.
Connect this unit to an approved vent system only, as
specified on page 7.
• Theinformationlistedbelowisforreferencepurposes
only and does not necessarily have jurisdiction over
local or state codes. Always consult with local authorities
before installing any gas appliance.
Combustion&VentilationAir
• US:NationalFuelGasCode(NFGC),AirforCombustion
and Ventilation
• CANADA:NaturalGasandPropaneInstallationCodes
(NSCNGPIC), Venting Systems and Air Supply for
Appliances
DuctSystems
US and CANADA: Air Conditioning Contractors
Association (ACCA) Manual D, Sheet Metal and
Air Conditioning Contractors National Association
(SMACNA), or American Society of Heating,
Refrigeration, and Air Conditioning Engineers (ASHRAE)
Fundamentals Handbook
Electrical Connections
• US:NationalElectricalCode(NEC)ANSI/NFPA70
• CANADA:CanadianElectricalCodeCSAC22.1
GasPiping&GasPipePressureTesting
• US:NFGCandNationalPlumbingCodes
• CANADA:NSCNGPIC
General Installation
• US:CurrenteditionoftheNFGCandtheNFPA90B.For
copies, contact the National Fire Protection Association
Inc., Batterymarch Park, Quincy, MA 02269; or American
Gas Association, 400 N. Capitol, N.W., Washington DC
20001 or www.NFPA.org
• CANADA:NSCNGPIC.Foracopy,contactStandard
Sales, CSA International, 178 Rexdale Boulevard,
Etobicoke (Toronto), Ontario, M9W 1R3 Canada
Safety
• US: (NFGC) NFPA 54–1999/ANSI Z223.1 and the
Installation Standards, Warm Air Heating and Air
Conditioning Systems ANSI/NFPA 90B.
• CANADA: CAN/CGA-B149.1 and .2–M00 National
Standard of Canada. (NSCNGPIC)
5
GENERAL INFORMATION
This Single Package Gas Heating / Electric Cooling
Unit is designed only for outdoor rooftop or ground level
slab installations and can be readily connected to the
high static duct system of a home. This unit has been
tested for capacity and efficiency in accordance with
AHRI standards and will provide many years of safe and
dependable comfort, providing it is properly installed
and maintained. With regular maintenance, this unit will
operate satisfactorily year after year. Abuse, improper
use, and/or improper maintenance can shorten the life
of the appliance and create unsafe hazards.
To achieve optimum performance and minimize equipment
failure, it is recommended that periodic maintenance be
performed on this unit. The ability to properly perform
maintenance on this equipment requires certain tools
and mechanical skills.
Beforeyouinstallthisunit
The cooling load of the area to be conditioned must be
calculated and a system of the proper capacity selected.
It is recommended that the area to be conditioned be
completely insulated and vapor sealed.
Check the electrical supply and verify the power supply
is adequate for unit operation. Consideration should be
given to availability of electric power, service access,
noise, and shade. If there is any question concerning
the power supply, contact the local power company.
All units are securely packed at the time of shipment and
upon arrival should be carefully inspected for damage
prior to installing the equipment at the job site. Verify
coil fins are straight. If necessary, comb fins to remove
flattened or bent fins. Claims for damage (apparent or
concealed) should be filed immediately with the carrier.
Survey the job site to determine the best location for
setting the unit. Choose an appropriate location that
minimizes the length of the supply and return air ducts.
Please consult your dealer for maintenance information
and availability of maintenance contracts. Please read
all instructions before installing the unit.
LocatingtheEquipment
• Selectasolid,levelposition,preferablyonaconcrete
slab, slightly above the grade level, and parallel to the
home. DO NOT PLACE UNIT UNDER THE HOME.
• Overhead obstructions, poorly ventilated areas, and
areas subject to accumulation of debris should be
avoided. Do not place the unit in a confined space or
recessed area where discharge air from the unit to re-
circulate into the condenser air inlet, through the coil.
• Sufcientclearanceforunobstructedairowthroughthe
louvered control access panel and outdoor coil must
be maintained in order to achieve rated performance.
See Figure 1 for minimum clearances to obstructions.
• Aclearanceofatleast36inchesfromthebloweraccess
panel and from the louvered control access panel is
recommended for servicing and maintenance. Where
accessibilitytocombustiblesclearancesaregreater
thanminimumclearances,accessibilityclearances
musttakepreference.
• Thehotcondenserairmustbedischargedupandaway
from the home, and if possible, in a direction with the
prevailing wind.
• Ifpractical,placetheairconditioneranditsductsinan
area where they will be shaded from the afternoon sun,
when the heat load is greatest.
HeatingLoad
This unit should be sized to provide the design heating
load requirement. Heating load estimates can be made
using approved methods available from Air Conditioning
Contractors of America (Manual J); American Society of
Heating, Refrigerating, and Air Conditioning Engineers;
or other approved engineering methods. For installations
above 2,000 ft., the unit should have a sea level input
rating large enough that it will meet the heating load after
deration for altitude.
Minimum Required
Clearances to Combustibles
36"
36"
36"
TOP OF UNIT
TO BE
UNOBSTRUCTED
See Note 1
See Note 2
NOTE 1: 6” When coil is present on duct side.
NOTE 2: 1” When no coil is present on duct side.
Figure1.ClearanceRequirements
6
WARNING:
CARbON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for
eachapplianceconnectedtotheventingsystem
beingplacedintooperationcouldresultincarbon
monoxidepoisoningordeath.Thefollowingsteps
shallbefollowedwitheachindividualappliance
connectedtotheventingsystembeingplacedin
operation,whileallotherappliancesconnectedto
theventingsystemarenotinoperation:
1.Sealanyunusedopeningsintheventingsystem.
2.Inspecttheventingsystemforpropersizeand
horizontalpitch,asrequiredintheNationalFuel
GasCode, ANSI Z223.1/NFPA 54 or the CSA
B149.1,NaturalGasandPropaneInstallation
Codesandtheseinstructions.Determinethat
there is no blockage or restriction, leakage,
corrosionandotherdeciencieswhichcould
causeanunsafecondition.
3.Asfaraspractical,closeallbuildingdoorsand
windowsandalldoorsbetweenthespacein
whichtheappliance(s)connectedtotheventing
system are located and other spaces of the
building.
4.Closereplacedampers.
5.Turn on clothes dryers and any appliance
notconnectedtotheventingsystem.Turnon
anyexhaustfans, such as range hoods and
bathroomexhausts,sotheyareoperatingat
maximum speed. Do not operate a summer
exhaustfan.
6.Follow the lighting instructions. Place the
appliance being inspected into operation.
Adjustthethermostatsoapplianceisoperating
continuously.
7.Test for spillage from draft hood equipped
appliances at the draft hood relief opening
after5minutesofmainburneroperation.Use
theameofamatchorcandle.
8.Ifimproperventingisobservedduringanyof
theabovetests,theventingsystemmustbe
correctedinaccordancewiththeNationalFuel
GasCode,ANSIZ223.1/NFPA54and/orCSA
B149.1,NaturalGasandPropaneInstallation
Codes.
9.Afterithasbeendeterminedthateachappliance
connectedtotheventingsystemproperlyvents
whentestedasoutlinedabove,returndoors,
windows,exhaustfans,replacedampersand
anyothergas-redburningappliancetotheir
previousconditionsofuse.
AVERTISSEMENT:
RISQUED’EMPOISONNEMENTAU
MONOXYDE DE CARbONED
Le non-respect des consignes suivantes portant
sur chacun des appareils raccordés au système
d’évacuation mis en service pourrait entraîner
l’empoisennement au monoxyde de carbone ou
la mort. Les consignes suivantes doivent être
observéespourchaqueappareilraccordéausystème
d’évacuationmisenservicesilesautresappareils
raccordésausystèmenesontpasenservice:
1.Scellertouteouverturenonutiliséedelasystéme
d’évacuation;
2.S’assurerquelasystémed’évacuationprésente
des dimensions et une pente horizontale
conformes à la norme ANSI Z223.1/NFPA
54, intitulée National Fuel Gas Code ou aux
codes d’installation CSA-B149.1, ainsi qu’aux
présentesinstructions.S’assurerquelasystéme
d’évacuation n’est pas bloquée, restreinte,
corrodée,qu’ellenefuitpasetqu’elleneprésente
aucunautredéfautpotentiellementdangereux;
3.Danslamesuredupossible,fermertoutesles
portesetfenêtresdubâtiment,ettouteslesportes
entrelapièceoùsetrouvel’appareilraccordéà
lasystémed’évacuationetlesautrespiècesdu
bâtiment.
4.Fermerlesregistresdesfoyers;
5.Mettre en service les sécheuses et tout autre
appareil qui n’est pas raccordé à la systéme
d’évacuation.Fairefonctionneràrégimemaximal
toutventilateurd’évacuation,telqueleshottesde
cuisinièreetlesventilateursdesallesdebains.
Nepasmettreenservicelesventilateursd’été.
6.Respecterlesinstructionsd’allumage.Mettreen
servicel’appareilàl’essai.Réglerlethermostat
demanièreàcequel’appareilfonctionnesans
interruption;
7.Vériers’ilyadébordementàl’oriced’évacuation
ducoupetiragedesappareilsdotésd’uncoupe
tirage 5 minutes après l’allumage du brûleur
principal.Utiliserlaammed’uneallumetteou
d’unechandelle.
8.Si l’on constate, au cours de l’un des essais
qui précèdent, que l’évacuationest déciente,
corrigerlesystèmed’évacuationconformément
à la norm ANSI Z223.1/NFPA 54,National Fuel
GasCode,et(ou)auxcodesd’installationCSA
b149.1.
9.Après avoir déterminé que tous les appareils
raccordésàlasystémed’évacuation évacuent
correctementtelqueprescritci-dessus,rouvrirles
portesetlesfenêtresetremettrelesventilateurs
d’évacuation, les registres de foyers et tout
autreappareilfonctionnantaugazàleurétatde
fonctionnementinitial.
COMbUSTION AIR & VENTING REQUIREMENTS
7
GeneralInformation
WARNING:
Installationmethodsotherthanthosedescribed
inthefollowingsectionsmustcomplywiththe
NationalFuelGasCodeandallapplicablelocal
codesforprovidingsufcientcombustionair
totheunit.
• Provisions must be made during the installation of
this unit that provide an adequate supply of air for
combustion.
Instructions for determining the adequacy of an
installation can be found in the current revision of the
NFGC(ANSIZ223.1/NFPA54).Consultlocalcodes
forspecialrequirements. These requirements are for
US installations as found in the NFGC.
• TherequirementsinCanada(B149.1)arestructured
differently. Consult with B149.1 and local code officials
for Canadian installations.
WARNING:
Combustible air must not be drawn from a
contaminatedatmosphere.Excessiveexposure
tocontaminatedcombustionairwillresultin
safetyandperformancerelatedproblems.
• Tomaximizeheatexchangerlife,thecombustionair
must be free of chemicals that can form corrosive acidic
compounds in the combustion gases. The recommended
source of combustion air is to use clean air from outside.
DO NOT place any chemicals with ammable or
causticvaporsortheseothercorrosivechemicals
neartheventtermination:
• Gasoline/Kerosene
• Permanentwavesolutions
• Chlorinatedwaxesandcleaners
• Chlorinebasedswimmingpoolchemicals
• Watersofteningchemicals
• De-icingsaltsorchemicals
• Carbontetrachloride
• Halogentyperefrigerants
• Cleaningsolvents
• Cements,glues,paintremovers,varnishes,etc.
• Hydrochloricacid
• Masonryacidwashingmaterials
• PlumbingStack
VentTermination
This unit has been equipped with an integral venting
system and designed to operate only with this venting
system. No additional venting shall be used. This unit
must be vented to the outdoors.
WARNING:
Thisunitis intendedforoutdoorinstallation
only.Donotventtheunitthroughaconventional
ventingsystem.
Figure2.VentAssembly
A vent cover assembly has been supplied with the unit.
and can be found secured to the gas controls within
the control area of this unit. Theventcoverassembly
mustbeinstalledtoassureproperoperationofthe
unit.Figure 2 shows the proper installation of the vent
cover assembly over the vent outlet on the exterior of the
corner panel. The fasteners used to secure the vent cover
assembly have been included in the owner’s package.
The following list summarizes the requirements for the
locationoftheventsystemtermination:
• Thelocationoftheventterminationmustbeconsistent
withtheNationalFuelGasCode(ANSIZ223.1)orCAN/
CGA-B149 Installation Codes.
• The vent termination mustbelocatedatleast4 feet
horizontally from any electric meters, gas meters,
regulators, and relief equipment.
• The vent termination mustbelocatedatleast3 feet
above any forced air inlet located within 10 feet.
• The vent termination mustbelocatedatleast4 feet
below, 4 feet horizontally from, or 1 foot above any
door, window, or gravity air inlet into any building.
• The vent termination mustbelocatedatleast1 foot
above grade.
• Theunitshouldbeinstalledinawaythatpreventsany
obstruction of the vent termination during accumulating
snow.
• Theunitinstallationshallavoidareaswherecondensate
drainage may cause problems by dropping on planters
or patios, etc. Also verify exhaust gases will not
impinge on windows or building surfaces, which may
be compromised or damaged by condensation.
• Donotinstalltheunitsuchthatexhaustfromthevent
termination is directed into window wells, stairwells,
under decks, or in alcoves or similarly recessed areas.
The vent termination must not be located above any
public walkways.
8
CIRCULATING AIR SUPPLY
WARNING:
Productsofcombustionmustnotbeallowedto
enterthereturnairductworkorthecirculating
air supply. Failure to prevent products of
combustion from being circulated into the
livingspacecancreatepotentiallyhazardous
conditions including carbon monoxide
poisoningthatcouldresultinpersonalinjury
ordeath.
Allreturnductworkmustbeadequatelysealed,
alljointsmustbetaped,andtheductworkmust
besecuredtotheunitwithsheetmetalscrews.
Whenreturnairisprovidedthroughthebottom
oftheunit,thejointbetweentheunitandthe
returnairplenummustbeairtight.
Theroofcurborcementpadonwhichtheunitis
mountedmustprovidesoundphysicalsupport
of the unit with no gaps, cracks, or sagging
betweentheunitandthecurborpad.
Returnairandcirculatingairductworkmustnot
beconnectedtoanyotherheatproducingdevice
suchasareplaceinsert,stove,etc.Doingso
mayresultinre,explosion,carbonmonoxide
poisoning,personalinjury,orpropertydamage.
Air Ducts
This unit is designed only for use with a supply and return
duct. Air ducts should be installed in accordance with the
standards of the National Fire Protection Association
“Standard for Installation of Air Conditioning Systems”
(NFPA 90A), “Standard for Installation of Residence Type
Warm Air Heating and Air Conditioning Systems” (NFPA
90B), and all applicable local codes. NFPA publications
are available by writing to: National Fire Protection
Association, Batterymarch Park, Quincy, ME 02269 or
visit www.NFPA.org on the web.
• DesigntheductworkaccordingtoManualDbytheAir
Conditioning Contractors of America (ACCA).
• Theductsmustbeproperlysizednottoexceed0.30
inches WC pressure drop per 100 feet of equivalent
duct at 400 SCFM per nominal ton of cooling capacity.
• Ductworkshouldbeattacheddirectlytotheunitanges
for horizontal applications.
• Ifroofcurbisinstalled,theductsmustbeattachedto
the curb duct supports, not the unit.
• It is recommended that the outlet duct be provided
with a removable access panel. The opening should
be accessible when the unit is installed in service and
shall be sizes so that smoke or reflected light may be
observed inside the casing to indicate the presence of
leaks in the heat exchanger. The cover for the opening
shall be attached in a way that will prevent leaks.
• If outside air is utilized as return air to the unit for
ventilation or to improve indoor air quality, the system
must be designed so that the return air to the unit is
not less than 50° F (10° C) during heating operation.
Air Filter Requirements
WARNING:
Neveroperatetheunitwithoutalterinplace.
Dust and lint could accumulate on internal
parts,resultinginlossofefciency,equipment
damageandpossiblere.
NOTE TO INSTALLER: After installing or replacing the
filtration system for this unit, add the following statement
on or adjacent to the lter service panel: “Replace
lter(s)installedinyoursystemonlywiththesame
dimensionalsizeltersthatarebeingreplaced.”
• Asuitableairltermustbeinstalledupstreamofthe
evaporator coil of the return air system. Refer to Table
1 for recommended external filter sizes.
• Allreturnairmustpassthroughtheltersbeforeentering
the evaporator coil. It is important that all filters be kept
clean and replaced frequently to ensure proper operation
of unit. Dirty or clogged filters will reduce the efficiency
of the unit and result in unit shutdowns.
• Airlterpressuredropmustnotexceed0.08inches
WC.
Unconditioned Spaces
All duct work passing through unconditioned space must
be properly insulated to minimize duct losses and prevent
condensation. Use insulation with an outer vapor barrier.
Refer to local codes for insulation material requirements.
Acoustical Duct Work
Certain installations may require the use of acoustical
lining inside the supply duct work.
• Acoustical insulation must be in accordance with the
current revision of the Sheet Metal and Air Conditioning
Contractors National Association (SMACNA) application
standard for duct liners.
• DuctliningmustbeULclassiedbattsorblanketswith
a fire hazard classification of FHC-25/50 or less.
• Fiberductworkmaybeusedinplaceofinternalduct
liners if the fiber duct work is in accordance with the
current revision of the SMACNA construction standard
on fibrous glass ducts. Fibrous duct work and internal
acoustical lining must be NFPA Class 1 air ducts when
tested per UL Standard 181 for Class 1 ducts.
Table1.RecommendedExternalAirFilterSizes
Nominal
Cooling
(Tonnage)
Approximate
AirFlow
Range(CFM)
Approximate
Filter Area
(Sq.In.)*
Recommended
Filter Size
(In.xIn.)
2.0 600-900 450 20 x 25
2.5 750-1200 550 20 x 30
3.0 1100-1300 625 25 x 25
3.5 1200-1600 750 24 x 30
4.0 1400-1800 850 18 x 24 (2 required)
5.0 1700-2200 1000 20 x 25 (2 required)
* Based on velocity of 300 ft/min for disposable filters.
9
UNIT INSTALLATION
PackagingRemoval
Remove the shipping carton and User’s Manual from the
equipment. For rooftop installations, remove and discard
the two supports attached beneath the unit.
Rigging & Hoisting
WARNING:
Toavoidtheriskofpropertydamage,personal
injury,ordeath,itistherigger’sresponsibility
toensurethatwhatevermeansareusedtohoist
theunitaresafeandadequate:
• Theliftingequipmentmustbeadequateforthe
load.RefertoTable7(page22)forunitweights.
• Theunitmustbeliftedfromtheholesinthe
baserailsusingcablesorchains.
• Spreaderbarsarerequiredtoprotecttheunit
andensureevenloading.
• Keeptheunitinanuprightpositionatalltimes.
Theriggingmustbelocatedoutsidetheunits
centerofgravity.RefertoFigure9(page22)
forlocatingthecenterofgravity.
• All panelsmust be securely in place during
riggingandhoisting.
ClearancestoCombustibleMaterials
These units are certified as combination heating and
cooling equipment for outdoor rooftop or ground level
installations. Units may be installed on combustible
flooring or Class A, B, or C roofing material when used
with bottom supply and return air ducts as long as the
followingrequirementsaremet:
• Ifusingbottomdischargewithreturnairductsaroof
curb must be installed prior to unit installation. See
Rigging and Hoisting section for setting of the unit.
• Sufcient clearance forunobstructed airow through
the outdoor coil must also be maintained in order to
achieve rated performance. See page 5 for information
about locating the equipment.
Rooftop
Rooftop installations must be located according to local
buildingcodesorordinancesandtheserequirements:
• Theroofmustbecapableofhandlingtheweightofthe
unit. For unit weights, see Table 7. Reinforce the roof
if necessary.
• Theappropriateaccessoryroofcurb(Figure3,page10)
must be installed prior to unit installation. The roof curb
must be square and level to ensure proper condensate
drainage. Pleasefollowallinstructionsprovidedwith
thekit.
• Secure roof curb or frame to roof using acceptable
mechanical methods per local codes. NOTE: Make sure
the two supports beneath the unit have been removed.
GroundLevel
Ground level installations must be located according to
localbuildingcodesorordinancesandtheserequirements:
• Clearancesmustbeinaccordancewiththoseshown
in Figure 1 (page 5).
• A suitable mounting pad must be provided and be
separate from the building foundation. The pad must be
level to ensure proper condensate disposal and strong
enough to support the unit’s weight. The slab height
must be a minimum of 2” (5cm) above grade and with
adequate drainage. See Figure 4 (page 10).
• RemoveanddiscardthehorizontalSupplyandReturn
duct covers located on the rear of the unit. Form duct
attachment flanges by bending the sheet metal outward
90 degrees along the perforated lines.
• Firmly attachductworkdirectly totheseanges with
screws or other approved mechanical connections and
not to the Supply/Return air panels to avoid damage to
internal components of the equipment. Once completed
use approved duct sealing methods to ensure an air
and watertight seal is achieved.
HorizontaltoDownowConversion
The unit is shipped ready for horizontal duct connections.
If down flow ducts are required, the unit must be converted
following the steps below for both the supply and return
ducts.
1. Remove the horizontal duct cap.
2. Locate the duct cap inside the duct openings and remove
the screw holding it in place.
3. Lift the cap out of the unit. (Hint: The cap can be pushed
up from the bottom by reaching through the fork slot).
4. Cover the horizontal duct opening with the horizontal
duct cap. The insulation will be on the indoor side.
5. Fasten the cover with screws to seal.
6. Remove and discard the two wood supports beneath
the unit.
CondensateDrain
Condensate is removed from the unit through the 3/4”
female pipe fitting located on the front side of the unit.
See Figure 5 on page 10.
Install a 2 inch condensate trap in the drain line of the
same size and prime with water. When connecting rigid
drain line, hold the female fitting with a wrench to prevent
twisting. Donotovertighten! Refer to local codes and
restrictions for proper condensate disposal requirements.
10
ELECTRICAL WIRING
Condensate Drain
High
Side
Low
Side
Figure5.RefrigerantServicePorts&
CondensateDrainLocations
ACCESSORY
ROOF CURB
Figure3.RoofTopInstallation
2”
Figure4.GroundLevelInstallation
• Electricalconnectionsmustbeincompliancewithall
applicable local codes with the current revision of the
National Electric Code (ANSI/NFPA 70).
• For Canadianinstallations the electricalconnections
and grounding shall comply with the current Canadian
Electrical Code (CSA C22.1 and/or local codes).
IMPORTANTNOTE:Ifreplacing anyof the original
wires supplied with the furnace, the replacement
wiremustbecopperwiringhavingthesameguage,
voltage,andtemperaturerating.
ELECTRICALSHOCK,FIREOREXPLOSION
HAZARD
Failuretofollowsafetywarningsexactlycould
resultinseriousinjuryorpropertydamage.
Improperservicingcouldresultindangerous
operation,seriousinjury,deathorproperty
damage.
• Beforeservicing, disconnectall electrical
powertofurnace.
• Whenservicingcontrols,labelallwiresprior
todisconnecting.Reconnectwirescorrectly.
• Verifyproperoperationafterservicing.
WARNING:
RISQUEDECHOCÉLECTRIQUE,D’INCENDIE
OUD’EXPLOSION
Le non-respect des avertissements de sécurité
pourraitentraîner
unfonctionnementdangereux
del’appareil,
desblessuresgraves,lamortou
desdommagesmatériels.
Unentreteinincorrectpourraitentraînerun
fonctionnementdangereuxdel’appareil,des
blessuresgraves,lamortoudesdommages
matériels
• Couper toute alimentation électrique au
générateurd’airchaudavantdeprodéder
auxtravauxd’entretein.
• Aumomentdel’entretiendescommandes,
étiqueteztousleslsavantdelesdébrancher.
S’assurerdelesraccordercorrectement.
S’assurer que l’appareil fonctionne
adéquatementaprésl’entretien.
AVERTISSEMENT:
11
Pre-ElectricalChecklist
Verify the voltage, frequency, and phase of the supply
source match the specifications on the unit rating plate.
Verify that the service provided by the utility is sufficient
to handle the additional load imposed by this equipment.
See Table 2 and Table 11 (page 26) (or the unit rating
label) for proper high voltage wiring requirements.
Verify factory wiring is in accordance with the unit
wiring diagram (Figures 11 & 12, pages 27 & 28). Make
sure the connections didn’t loosen during shipping or
installation.
Grounding
WARNING:
Theunitcabinetmusthaveanuninterruptedor
unbrokenelectricalgroundtominimizepersonal
injuryifanelectricalfaultshouldoccur.Donot
usegaspipingasanelectricalground
!
This unit must be electrically grounded in accordance with
local codes or, in the absence of local codes, with the
National Electrical Code (ANSI/NFPA 70) or the CSA C22.1
Electrical Code. Grounding of the unit is accomplished
by using the grounding lug provided in the control box.
Line Voltage
• Thelinevoltagetotheunitshouldbesuppliedfroma
dedicated branch circuit containing the correct fuse or
circuit breaker for the unit.
• Anelectricaldisconnectmustbelocatedwithinsight
ofandreadilyaccessibletotheunit. This switch shall
be capable of electrically de-energizing the outdoor unit.
See unit data label for proper incoming field wiring. Any
other wiring methods must be acceptable to authority
having jurisdiction.
• Useonlycopperwireforthelinevoltagepowersupply
to this unit (Table 2). Use proper code agency listed
conduit and a conduit connector for connecting the
supply wires to the unit. Use of rain tight conduit is
recommended.
• Providepowersupplyfortheunitinaccordancewith
the unit wiring diagram and the unit rating plate.
• Overcurrentprotectionmustbeprovidedatthebranch
circuit distribution panel and sized as shown on the unit
rating label and according to applicable local codes. See
Table 11 (or the unit rating plate) for minimum circuit
ampacity and maximum overcurrent protection limits.
• Awiringdiagramislocatedontheinsidecoverofthe
control access panel of the outdoor unit. The installer
should become familiar with the wiring diagram before
making any electrical connections to the outdoor unit.
See Figures 11 & 12.
• Unitsareshippedfromthefactorywiredfor240volt
transformer operation. For 208V operation, remove the
lead from the transformer terminal marked 240V and
connect it to the terminal marked 208V.
• Connecttheline-voltageleadstotheterminalsonthe
contactor inside the control compartment.
Thermostat/LowVoltageConnections
• Thisunitisdesignedtooperatefroma24VACClass
II control circuit. A single stage cooling / single stage
heating thermostat should be used with this unit.
A 2-stage cooling / 2-stage heating thermostat is
recommended for economizer operation. See Figure
6 (page 12) for typical thermostat connection.
• Thecontrolcircuitwiringmustcomplywiththecurrent
provisions of the NEC (ANSI/NFPA 70) and with
applicable local codes having jurisdiction. Thermostat
connections should be made in accordance with the
instructions supplied with the thermostat and the indoor
equipment.
• The low voltage wires must be properly connected.
Route 24V control wires through the sealing grommet
near the power entrance. Recommended wire gauge
and wire lengths for typical thermostat connections are
listed in Table 3 (page 12).
• Several thermostat options are available depending
on the accessories installed with the unit. Select a
thermostat that operates in conjunction with the installed
accessories.
• Thethermostatshouldbemountedabout5feetabove
the floor on an inside wall. DO NOT install the thermostat
on an outside wall or any other location where its
operation may be adversely affected by radiant heat from
fireplaces, sunlight, or lighting fixtures, and convective
heat from warm air registers or electrical appliances.
Refer to the thermostat manufacturer’s instruction sheet
for detailed mounting information.
Checking Heat Anticipator Settings
• Addthecurrentdrawofthesystemheatingcomponents.
OR
• MeasurethecurrentowonthethermostatR-W circuit
after the circulating blower motor has started. Set the heat
anticipator according to the thermostat manufacturer’s
instructions for heat anticipator settings.
COPPER WIRE SIZE — AWG
(1%VoltageDrop)
SupplyWireLength-Feet
SupplyCircuit
Ampacity
200 150 100 50
6 8 10 14 15
4 6 8 12 20
4 6 8 10 25
4 4 6 10 30
3 4 6 8 35
3 4 6 8 40
2 3 4 6 45
2 3 4 6 50
2 3 4 6 55
1 2 3 4 60
Wire Size based on N.E.C. for 60° type copper conductors.
Table2.CopperWireSize
12
Table3.ThermostatWireGauge
Thermostat
WireGauge
RecommendedT-StatWire
Length(UnittoT-Stat)
2-Wire
(Heating)
5-Wire
(Heating/Cooling)
24 55 25
22 90 45
20 140 70
18 225 110
Figure6.TypicalThermostatConnection
(FieldSupplied)for1-StageCool/1-StageHeat
C
Y1
R
G
W1
R
C
Y
G
W1
Y2
TERMINAL BLOCK
FURNACE
BOARD
Optional, Refer to
Thermostat Instructions
INDOOR THERMOSTAT
SUB-BASE (TYPICAL)
A1
BlowerSpeed
The blower speed is preset at the factory for proper
fan only, heating, and cooling operation. These factory
settings are listed in Table 8 (page 23). For optimum
system performance and comfort, it may be necessary
to change the factory set speed.
CAUTION:
Toavoidpersonalinjuryorpropertydamage,
makesurethemotorleadsdonotcomeinto
contactwithanyuninsulatedmetalcomponents
oftheunit.
5-Speed ECM Motor
1. Shut off all electrical power to the unit and remove the
blower panel. Locate the orange, red and blue wires
terminated to the blower motor. NOTE: The orange wire
controls cooling operation while the red wire controls
heating operation. The blue wire controls fan-only
operation.
2. Verify the required speed from the airflow data found
in Table 8. Place appropriate wire on the correct motor
speed tap for the required airflow point.
3. The integrated furnace control can be set to a 2 or 3
speed mode.
NOTE 1: When a G only call is received from the
thermostat (indicating a continuous fan mode), the
blower will run the HEAT speed when the 2-SPD mode
is selected using the jumper on the control board (factory
setting).
NOTE 2: When 3-SPD mode is selected, the FAN speed
is energized and may be different than the heating or
cooling speed. If no jumper is present, the control defaults
to the 2-SPD HEAT speed mode of operation. A call for
heating or cooling takes priority over fan only mode.
PSC Motor
1. Disconnect all electrical power to the unit and remove
the control panel cover.
2. Place the desired blower lead (for cooling) on the furnace
board terminal marked COOL.
3. Place the desired blower lead (for heating) on the furnace
board marked HEAT. The unused leads can be placed
on M1, M2, or M3 on the furnace control board. These
are dead terminals.
NOTE 1: RED = Low Speed, BLUE = Medium Speed,
BLACK=HighSpeed.
NOTE 2: Factory settings require the 024K045 and
030K072modelstohavethesamecoolingandheating
speed. These units will have a jumper from heat to cool
with the factory setting motor speed tap placed on the
jumper.
NOTE 3: When a call for the fan (G)is made, the furnace
board initiates the heat terminal. If heat and cool are
jumpered, the fan, heat and cool will have the same
blower speed.
OptionalFurnaceControlBoard
Connections
Electronic Air Cleaner
The furnace control board provides output terminals
for an optional electronic air cleaner (EAC) that can be
installed in the return air duct of your system. THE EAC
output is energized any time the HEAT or COOL blower
speed is energized. Control ratings are 1.0 Amp. @ 240
VAC. Output connections are made via board terminals
labeled EAC and NEUTRAL.
Humidifier
The furnace control board provides output terminals for
an optional humidifier (HUM) that can be installed on
your system. The HUM output is energized any time the
furnace inducer motor is energized. Control ratings are
1.0 Amp. @ 240 VAC. Output connections are made via
board terminals labeled HUM and NEUTRAL.
Check all factory wiring to the units wiring diagram. Inspect
the factory wiring connections to be sure none loosened
during shipping or installation.
13
GAS SUPPLY & PIPING
• Allgaspipingmustbeinstalledincompliancewith
localcodesandutilityregulations.Intheabsence
oflocalcodesthegaslineinstallationmustcomply
withthelatesteditionoftheNationalFuelGasCode
ANSIZ223.1orCAN/CGAB149InstallationCodes.
• Some local codes require the installation of a
manualmainshut-offvalveandgroundjointunion
externaltotheunit.Theshut-offvalveshouldbe
readily accessible for service and/or emergency
use. Consult the local utility or gas supplier for
additionalrequirementsregardingplacementofthe
manualmaingasshut-off.SeeFigure7(page15).
• Themanifoldpressuremustbesettotheappropriate
value for your installation. Refer to the Manifold
Pressure Adjustment section (page 17) for
adjustmentinstructions.
• Gaspipingmustneverruninorthroughairducts,
chimneys,gasvents,orelevatorshafts.
• Compoundsusedtosealjointsongaspipingmust
beresistanttotheactionsofLPpropanegas.
The main gas shutoff valve and main power
disconnect to the unit must be properly labeled
by the installer in case emergency shutdown is
required.
• An1/8inchNPTpluggedtapmustbeinstalledin
thegaslineimmediatelyupstreamofthegassupply
connectiontotheunitforusewhenmeasuringthe
gassupplypressure.Theplugshouldbereadily
accessibleforserviceuse.
• Adriplegshouldbeinstalledintheverticalpipe
runtotheunit.SeeFigure7.
This unit only has right side gas entry. When connecting
the gas, provide clearance between the gas supply line
and the entry hole in the unit’s casing to avoid unwanted
noise and/or damage to the unit. A typical gas service
hookup is shown in Figure 7.
Table 9 (page 24) lists gas pipe capacities for standard
pipe sizes as a function of length in typical applications
based on nominal pressure drop in the line.
LeakCheck
WARNING:
FIRE OR EXPLOSION HAZARD
Nevertestforgasleakswithanopename.
Checkall connections using a commercially
available soap solution. A re or explosion
mayresultcausingpropertydamage,personal
injuryorlossoflife.Failuretofollowthesafety
warningsexactlycouldresultinseriousinjury,
deathorpropertydamage.
After the gas piping to the unit is complete, all connections
must be tested for gas leaks. This includes pipe connections
at the main gas valve, emergency shutoff valve and
other gas connectors. A soap and water solution can be
applied on each joint or union using a small paintbrush.
If any bubbling is observed, the connection is not sealed
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly
could result in serious injury or property
damage.
• Installationandservicemustbeperformed
byaqualiedinstaller,serviceagencyorthe
gassupplier.
• Do not store or use gasoline or other
ammablevaporsandliquidsinthevicinity
ofthisoranyotherappliance.
WHAT TO DO IF YOU SMELL GAS
• Donottrytolightanyappliance.
• Donottouchanyelectricalswitch;donot
useanyphoneinyourbuilding.
• Leavethebuildingimmediately.
• Immediatelycallyourgassupplierfroma
neighbor’sphone.Followthegassupplier’s
instructions.
• Ifyoucannotreachyourgassupplier,call
theredepartment.
WARNING:
RISQUED’INCENDIEOUD’EXPLOSION
Le non-respect des avertissements de
sécurité pourrait entraîner des blessures
graves,lamortoudesdommagesmatériels.
L’installation et l’entretien doivent être
effectués par un installateur qualié, un
organisme de service ou le fournisseur
de gazstaller, service agency or the gas
supplier.
• Nepasentreposerniutiliserdel’essenceni
d’autresvapeursouliquidesinammables
danslevoisinagedecetappareil,nidetout
autreappareil.
QUEFAIRES’ILYAUNEODEURDEGAZ
• Nepastenterd’allumeraucunappareil.
• Netoucheràaucuninterrupteurélectrique;
n’utiliseraucuntéléphonedanslebâtiment.
• Évacuerl’immeubleimmédiatement.
• Appeler immédiatement le fournisseurde
gazenemployantletéléphoned’unvoisin.
Respecter à la lettre les instructions du
fournisseurdegaz.
• Sipersonnenerépond,appelerleservice
desincendies.
AVERTISSEMENT:
14
adequately and must be retightened. Repeat the tightening
and soap check process until bubbling ceases.
• Ifpressuretestingthegassupplylinesatpressures
greaterthan1/2psig(14inchesWC),theunitmust
bedisconnectedfromthegassupplypipingsystem
topreventdamagetothegasvalve.
• Ifthetestpressureislessthanorequalto1/2psig
(14inchesWC),theunitmustbeisolatedfromthe
gassupplylinebyclosingthemanualshut-offvalve.
HighAltitudeConversion-NaturalGas
Conversion of this unit must be performed by qualified
service personnel, using only approved parts. All
installations must be made in accordance with the National
Fuel Gas Code and/or local jurisdiction codes.
WARNING:
Thereductionofinputratingnecessaryforhigh
altitudeinstallationmayonlybeaccomplished
withfactorysuppliedorices.Donotattemptto
drilloutoricesintheeld.Improperlydrilled
orices may cause re, explosion, carbon
monoxidepoisoning,personalinjuryordeath.
High altitude conversion can be field performed by a
simple adjustment of manifold pressure or a change of
the orifices (if necessary) as described on page 17. The
changes required depend on the installation altitude and
the heating value of the gas (based on sea level) which
can be obtained from your local gas utility. The heating
value of gas at high altitude is always lower than the sea
level heating value. Natural Gas heating values listed in
Table 4 (page 15) are based on sea level values.
All factory shipped furnaces are ready to operate using
Natural Gas between zero and 4999 ft. above sea level.
For altitudes between 5,000 and 10,000 feet above sea
level, the unit can be converted by adjusting the unit’s
manifold pressure. See Table 4 for the correct manifold
pressure settings.
NOTE: If installing this unit above 2,000 feet, the input rate
mustbereduced4%per1,000feetofaltitude(Example:
12% at 3,000 feet, 16% at 4,000 feet, etc). Deration is
necessary to compensate for low atmospheric pressure
at high altitudes.
LP/PropaneGasConversion
WARNING:
Thisunitwasequippedatthefactoryforuse
withnaturalgasonly.A specialkit,supplied
bythemanufacturer,isrequiredtoconvertthe
unittooperateonLP/propanegas.Failureto
usetheproperconversionkitcancausere,
explosion,propertydamage,carbonmonoxide
poisoning,personalinjury,ordeath.
IMPORTANTNOTE:WhenconvertingalowNOxunit
fromnaturalgastopropane(LP)gas,itisnecessary
toremovetheNOxbafes.
Conversion of this equipment to LP/Propane gas must
be made by qualified service personnel, using approved
factory parts. Conversion to LP can be accomplished by
replacing the natural gas orifices with the appropriate LP/
Propane orifices and then adjusting the manifold pressure
(page 17). Conversion to LP/Propane (sea level and high
altitude) is detailed in the installation instructions provided
with the conversion kit. Pleasefollowtheinstructions
providedineachkit.Approved conversion kits are listed
below:
• The United States LP/Propane Gas Sea Level and
HighAltitudeConversionKit(P/N904404A)isforLP/
propane conversion in the United States at altitudes
between zero and 10,000 ft. above sea level.
• The Canadian LP/PropaneGas Sea LevelandHigh
AltitudeConversionKit(P/N904405A)isforLP/propane
conversions in Canada at altitudes between zero and
4,500 ft. above sea level.
For installations between zero and 4,999 ft. above sea
level, a #54 drill size orifice should be used. Installations
5,000 ft. above sea level require a # 55 drill size orifice.
Table 5 (page 15) lists the correct orifice size to use at
different altitudes.
After changing the orifices, it is required that you measure
the gas input rate by clocking the gas meter and using
the local gas heating value. See Verifying & Adjusting the
Firing Rate section on page 17.
15
Ground
Joint
Union
Dripleg
Shut-Off Valve
with
1
/8 NPT
plugged tap
Burner
Assembly
Manifold
Some utilities
require Shut-Off
Valve to be
4 to 5 feet
above floor
Automatic Gas Valve
(with manual shut-off)
Figure7.TypicalGasHookup-RightSideEntry
Table4.ManifoldPressureSetting(inWC)forNaturalGas
NaturalGas
HeatingValueof
800to899Btu/cu.ft.
ALTITUDE AbOVE SEA LEVEL
zeroto1,999 2,000to4,999 5,000to5,999 6,000to7,999 8,000to10,000
3.5 3.5 3.5 3.5 3
NaturalGas
HeatingValueof
900to999Btu/cu.ft.
ALTITUDE AbOVE SEA LEVEL
zeroto1,999 2,000to4,999 5,000to5,999 6,000to7,999 8,000to10,000
3.5 3.5 3.5 3.2 2.8
NaturalGas
HeatingValueof
1,000to1,100Btu/cu.ft.
ALTITUDE AbOVE SEA LEVEL
zeroto1,999 2,000to4,999 5,000to5,999 6,000to7,999 8,000to10,000
3.5 3.5 3 2.8 2.5
LPHeatingValue
of2,500Btu/ft.3
ALTITUDE AbOVE SEA LEVEL
zero to
1,999
2,000to
2,999
3,000to
4,999
5,000to
5,999
6,000to
7,999
8,000to
10,000
Manifold Pressure 9.8 - 10 8.8 - 9.0 8.3 - 8.5 9.8 - 10 8.8 - 9.0 8.3 - 8.5
Orifice Size 54 54 54 55 55 55
NOTE: Manifold pressure based on sea level LP heating value of 2,500 Btu/cu. ft.
3
Table5.ManifoldPressureSetting(inWC)&OriceSizeforLPGas
16
START UP & ADJUSTMENTS
Pre-StartCheckList
Verify the unit is level and allows condensate to drain.
Verify all clearance requirements are met and there is
free airflow to and from the outdoor coil.
Verify that the duct work is sealed to prevent air leakage
and air filter is installed.
Verify that the line voltage power leads are securely
connected and the unit is properly grounded.
Verify that the low voltage wires are securely connected
to the correct terminals in the low voltage area of the
control box.
Verify that the gas line service pressure does not exceed
10.0 inches WC (0.36 psig), and is not less than 4.5
inches WC (0.16 psig) for natural gas. For LP gas the
line service pressure must not exceed 14 inches WC
(0.51 psig) and must not be less than 11.0 inches WC
(0.40 psig).
Verify that the flame roll-out control is closed. If
necessary, press the red button to reset the control. DO
NOT install a jumper wire across the control to defeat its
function. If the control reopens upon start-up, DO NOT
reset the control without identifying and correcting the
fault condition which caused the control to trip.
Verify that the gas line has been purged and all
connections are leak tight.
Verify that all exterior panels are replaced and securely
fastened.
Verify that the outdoor fan turns freely.
Verify that the power supply branch circuit overcurrent
protection is sized properly.
Verify that the thermostat is wired correctly. The
thermostat function switch should be set to OFF and
the thermostat fan switch should be set to AUTO.
Start-UpProcedure
WARNING:
Ifthisunitisequippedwithcrankcaseheaters,
allow 24 hrs for heating of the refrigerant
compressor crankcase prior to start up or
anytimethepowerhasbeenremovedformore
than 12 hrs. Failureto comply mayresult in
damage or cause premature failure of the
system.
Air Circulation
Leave the thermostat system mode on OFF, and set the
fan mode to ON. Blower should run continuously. Check
the air delivery at the supply registers and adjust register
openings for balanced air distribution. Examine ductwork
for leaks or obstruction if insufficient air is detected. Set
the thermostat fan mode to AUTO. The blower should
stop running.
System Cooling
1. Set the thermostat’s system mode to COOL and the
fan mode to AUTO. Gradually lower the thermostat
temperature setpoint below room temperature and verify
the compressor, fan and indoor blower energize.
2. Feel the air being circulated by the indoor blower and
verify that it is cooler than ambient temperature. Listen for
any unusual noises. If unusual sounds occur, determine
the source of the noise and correct as necessary.
3. Allow the cooling system to operate for several minutes
and then set the temperature selector above room
temperature. Verify the fan and compressor cycle off
with the thermostat. NOTE: The blower will also stop
after a 40 second delay.
System Heating
1. Set the thermostat to the lowest setting.
2. Follow the procedures given on the operating instruction
label, this manual or attached inside the louvered control
access panel.
3. Set the thermostat above room temperature and verify
the Operating Sequence. See page 18.
4. Verify that the compressor and outdoor fan motor are
not energized.
5. After the unit has run for approximately five minutes,
set the thermostat below room temperature and verify
the shutdown sequence; steps 10 -12 in the Operating
Sequence section (pages 18-19).
Verifying&AdjustingTemperatureRise
Verify the temperature rise through the unit is within the
range specified on the unit data label. Temperature rises
outside the specified range could result in premature heat
exchanger failure.
1. Place thermometers in the return and supply air stream
as close to the unit as possible. The thermometer on the
supply air side must be shielded against direct radiation
from the heat exchanger to avoid false readings.
2. Adjust all registers and duct dampers to the desired
position. Run the unit for 10 to 15 minutes before
taking any temperature readings. The temperature
rise is the difference between the supply and return air
temperatures.
NOTE: For typical duct systems, the temperature rise will
fall within the range specified on the data label (with the
blower speed at the factory recommended setting) shown
in Table 8 (page 23). If the measured temperature rise falls
outside the specified range, it may be necessary to change
the blower speed. Lowering the blower speed increases
the temperature rise and a higher speed decreases the
temperature rise.
The unit is equipped with a multi speed motor. On units
with ECM type motors, speed selection is made by moving
the leads on the blower motor terminal block. If the unit
is equipped with a PSC type motor, speed selection is
made by moving the leads on the furnace control board.
The speed taps for adjusting the motor speed are shown
in the unit wiring diagram or Figures 11 & 12 (pages 27
& 28). Refer to the Blower Speed section (page12) for
additional information.
17
The integrated control starts the circulating air blower
30 seconds after the gas valve is opened. The control is
factory wired to turn the blower motor off 90 - 135 seconds
after the gas valve is closed.
ECM Motors: The heating blower off delay is factory
set at 90 seconds. An additional 45 second off delay is
programmed into the ECM blower motor for a total of
135 seconds.
PSC Motors: A moveable jumper is provided to select
between four heat blower off delay times - 60, 90, 120,
and 180 seconds. The control is shipped with the jumpers
in the 120 second position. The control defaults to 90
seconds if the jumper is not attached.
Verifying&AdjustingFiringRate
CAUTION:
Donotre-drilltheburnerorices.Iftheorice
sizemustbechanged,useonlyneworices.
The firing rate must be verified for each installation to
prevent over-firing of the unit. Theringratemustnot
exceed the rate shown on the unit data label. To
determinetheringrate,followthestepsbelow:
1. Obtain the gas heating value (HHV) from the gas supplier.
2. Shut off all other gas fired appliances.
3. Start the unit in heating mode and allow it to run for at
least 3 minutes.
4. Measure the time (in seconds) required for the gas meter
to complete one revolution.
5. Convert the time per revolution to cubic feet of gas per
hour using Table 10 (page 24).
6. Multiply the gas flow rate in cubic feet per hour by the
heating value of the gas in Btu per cubic foot to obtain
the firing rate in Btu per hour. See Example.
Example:
• Timefor1revolutionofagasmeterwitha1cubic
foot dial = 40 seconds.
• FromTable10,read90cubicfeetgasperhour.
• Localheatingvalueofthegas(obtainedfromgas
supplier) = 1,040 Btu per cubic foot.
• Inputrate=1,040x90=93,600Btuh.
7. Adjust the manifold pressure if necessary. See Manifold
Pressure Adjustment above. For additional information
about elevations above 2,000 feet, see page 14.
ManifoldPressureAdjustment
The manifold pressure must be set to the appropriate
valueforyourinstallation.Toadjustthemanifoldpressure:
1. Obtain the required manifold pressure setting. Use Table
4 (page 15) for natural gas or Table 5 for LP/propane
gas.
NOTE: The values listed in the tables are based on
sea level values. At higher altitudes, the heating value
of gas is lower than the sea level heating value.
2. Remove the regulator capscrew (Figure 8) from the
INLET side of the regulator.
3. Slowly turn the adjustment screw inside the regulator
to obtain the appropriate manifold pressure.
NOTE: Turning the screw clockwise increases the
pressure and turning the screw counter-clockwise
decreases the pressure. To prevent backing the screw
all the way out from the valve, turn the screw slowly.
4. Replace and tighten the regulator capscrew over the
adjustment screw.
Capscrew
Inlet
Pressure
Tap
Manifold
Pressure
Tap
Figure8.RegulatorCapscrew&TapLocations
VerifyingOver-TemperatureLimitControl
Operation
1. Verify the louvered control access panel is in place and
that there is power to the unit.
2. Block the return airflow to the unit by installing a close-
off plate in place of or upstream of the filter.
3. Set the thermostat above room temperature and verify
the units operating sequence (pages 18 - 19).
NOTE: The over-temperature limit control should turn off
the gas valve within approximately four minutes (exact time
depends on the efficiency of the close-off when blocking
the return air). The circulating air and combustion blowers
should continue to run when the over-temperature limit
control switch opens.
4. Remove the close-off plate immediately after the over-
temperature limit control opens. If the unit operates
for more than four minutes with no return air, set the
thermostat below room temperature, shut off power to
the unit, and replace the over-temperature limit control.
18
OPERATING SEQUENCE
The operating sequences for the heating, cooling, and
fan modes are described below. Refer to the field and
unit wiring diagrams (Figures 11 & 12, pages 27 & 28).
HeatingMode
1. On a call for heat, the thermostat closes and applies
24 VAC to the W terminal of the control board.
2. The control board checks for continuity on the 24 VAC
limit control circuit through the over-temperature limit
switch and flame rollout switch in series. If an open limit
is detected, the control board will energize the inducer
blower. All other system functions will be inoperable
until the limit circuit closes. While the limit is open, the
red LED will pulse at a rate of 1 blink per unit time.
3. The furnace control checks for continuity (24 VAC)
across the pressure switch. If the pressure switch is
closed, the heat mode sequence will not continue. If it
remains closed for 10 seconds, the red LED will flash
3 times repetitively until the fault condition clears.
4. The inducer energizes (if pressure switch is open).
5. The pressure switch will close. If the pressure switch
does not close after 10 seconds, the fault LED will flash
2 times and the inducer will continue to run until the
switch is closed.
6. The inducer will pre-purge for 30 seconds and then the
igniterwillstartitswarm-upasfollows:
Initial Power up: After 30 seconds of igniter warm-up,
the gas valves (24 VAC) will open. The igniter circuit will
stay energized for 3 seconds after the gas valve opens.
After Initial Power up: The control has a programmed
adaptive ignition feature which varies the warm-up
periodasfollows:Ifignitionissuccessfulthewarm-up
is reduced by 3 seconds on each subsequent call for
heat until ignition failure occurs. Upon ignition failure,
the warm-up is increased by 3 seconds on the next try.
If successful, the timing remains fixed at this level. In
general, whenever ignition failure occurs the warm-up
interval is increased by 3 seconds on the next try. And
if successful, it remains there. Minimum and maximum
warm-up time limits are set at 6 and 54 seconds.
7. The furnace control must prove flame via the flame
sensor 5 seconds after the gas valves open. If flame is
sensed, burners are on and the igniter cools off. If no
flame is sensed, the gas valve closes immediately and
the inducer continues to run. A second trial for ignition
(step 6) begins. If no flame is sensed on the fifth try for
ignition, the furnace control is locked and the red LED
will blink 4 times repetitively. The thermostat must be
opened for at least ten seconds to reset the furnace
control after a lock out. Otherwise, the furnace will
attempt another ignition sequence in 1 hour.
8. After the gas valve opens (30 seconds), the blower will
ramp to the selected airflow and continues to run.
9. When the thermostat has been satisfied, the W terminal
on the integrated control is de-energized.
10. The gas valve circuit is de-energized and the gas valve
closes.
VerifyingBurnerOperation
WARNING:
Uninsulatedlivecomponentsareexposedwhen
louveredcontrolaccesspanelisremoved.
1. Remove the louvered control access panel and verify
there is power to the unit.
2. Set thermostat above room temperature and observe
the ignition sequence. NOTE: The burner flame should
carry over immediately between all burners without
lifting off, curling, or floating. The flames should be blue,
without yellow tips. Make sure the flame is drawn into
the center of the heat exchanger tube. In a properly
adjusted burner assembly, the flame bends down and
to the right at the end of the heat exchanger tube. The
end of the flame will be out of sight around the bend.
3. After validating flame characteristics, set the thermostat
below room temperature and verify the burner flame
extinguishes completely.
RefrigerantCharging
WARNING:
These units are shipped fully charged with
R-410Arefrigerantandreadyforinstallation.
Whenasystemisinstalledaccordingtothese
instructions,norefrigerantchargingisrequired.
Ifrepairsmakeitnecessaryforevacuationand
charging,itshouldonlybedonebyqualied,
trainedpersonnelthoroughlyfamiliarwiththis
equipment.Somelocalcodesrequirelicensed
installation/service personnel to service this
type of equipment. Under no circumstances
should the owner attempt to install and/or
servicethisequipment.Failuretocomplywith
thiswarningcouldresultinpropertydamage,
personalinjury,ordeath.
CAUTION:
ThisunitusesR-410Arefrigerant.DONOTuse
anyotherrefrigerantinthisunit.Useofanother
refrigerantwilldamagetheunit.
The system refrigerant charge can be checked and
adjusted through the service ports provided at the front
panel. Use only gauge lines which have a “Schrader”
depression device present to actuate the valve. Draw a
vacuum on gauge lines to remove air before attaching
them to the service ports on the unit. Refrigerant charging
must be done by qualified personnel familiar with safe
and environmentally responsible refrigerant handling
procedures.
19
11. The inducer motor will continue to run for the post
purge period of 25 seconds.
12. The main blower will continue to run for the BLOWER
OFF delay of 90 - 135 seconds.
13. After the BLOWER OFF timer has been satisfied, the
integrated control de-energizes the main circulating
blower circuit.
CoolingMode
1. On a call for cooling, the thermostat closes applying 24
VAC to the G & Y terminals on the low voltage terminal
strip.
2. The G terminal applies 24VAC to the G terminal of the
integrated control, energizing the main circulating blower
circuit at the cooling speed.
3. The Y terminal applies 24VAC to the contactor.
4. When the thermostat is satisfied, the contactor and
integrated control de-energize. Compressor and outdoor
fan will stop running.
5. The circulating blower motor de-energizes after a 40
second delay.
FanMode
1. On a call for fan only operation, the thermostat applies
24 VAC to the G terminal connected to the G terminal
of the integrated control.
2a. ECM Motors: The circulating blower is energized
immediately at the heating speed if 2-SPD is selected
or fan only speed if 3-SPD is selected on the control.
2b. PSC Motors: The circulating blower is energized
immediately on the heat speed.
NOTE: If a call for heat occurs, the circulating blower de-
energizes prior to normal heating cycle.
EQUIPMENT MAINTENANCE
ELECTRICALSHOCK,FIREOREXPLOSION
HAZARD
Failuretofollowsafetywarningsexactlycould
resultinseriousinjuryorpropertydamage.
Improperservicingcouldresultindangerous
operation,seriousinjury,deathorproperty
damage.
• Beforeservicing, disconnectall electrical
powertofurnace.
• Whenservicingcontrols,labelallwiresprior
todisconnecting.Reconnectwirescorrectly.
• Verifyproperoperationafterservicing.
WARNING:
RISQUEDECHOCÉLECTRIQUE,D’INCENDIE
OUD’EXPLOSION
Le non-respect des avertissements de sécurité
pourraitentraîner
unfonctionnementdangereux
del’appareil,
desblessuresgraves,lamortou
desdommagesmatériels.
Unentreteinincorrectpourraitentraînerun
fonctionnementdangereuxdel’appareil,des
blessuresgraves,lamortoudesdommages
matériels
• Couper toute alimentation électrique au
générateurd’airchaudavantdeprodéder
auxtravauxd’entretein.
• Aumomentdel’entretiendescommandes,
étiqueteztousleslsavantdelesdébrancher.
S’assurerdelesraccordercorrectement.
S’assurer que l’appareil fonctionne
adéquatementaprésl’entretien.
AVERTISSEMENT:
CAUTION:
Usecarewhenremovingpartsfromthisunit.
Personal injury can result from sharp metal
edgespresentinallequipmentofsheetmetal
construction.
Proper maintenance is important to achieve optimum
performance from the system. The ability to properly
perform maintenance on this equipment requires certain
mechanical skills and tools. If you do not possess these
skills, contact your dealer for maintenance. Consult your
local dealer about the availability of maintenance contracts.
Routinemaintenanceshouldincludethefollowing:
REPLACEMENT PARTS
Replacement parts are available through all Nordyne
distributors. Please have the complete model and serial
number of the unit when ordering replacement parts.
Electrical:
• Capacitors • PressureSwitches
• Compressors • Relays
• Contactors • TemperatureLimitSwitches
• GasValves • Thermostats
• IgnitionControls • TimeDelayRelays
• Ignitors/FlameSensors • Transformers
Motors:
• BlowerMotor
• FanMotor
• InducerBlowerMotor
Components:
• Blower Assembly • FanGrille
• Burner Manifold • Filter/Driers
• Burners/Orifices • Gaskets
• Cabinet Panels • HeatExchanger
• Expansion Valves
20
CAUTION:
Theunitshouldneverbeoperatedwithouta
lterinthereturnairsystem.Replacedisposable
lterswiththesametypeandsize.
• Inspect,cleanorreplaceairltersatthebeginningof
each heating and cooling season, or more frequently
if required.
• Inspectthecondensatedrainandoutdoorcoilatthe
beginning of each cooling season. Remove any debris.
Clean the outdoor coil and louvers as necessary using a
mild detergent and water. Rinse thoroughly with water.
• Inspecttheelectricalconnectionsfortightnessatthe
beginning of each heating and cooling season.
• Theblowercompartmentshouldbecleanedmonthly
during the heating and cooling seasons to remove any dirt
and lint that may have accumulated in the compartment
or on the blower and motor. Buildup of dirt and lint on
the blower and motor can create excessive loads on
the motor resulting in higher than normal operating
temperatures and possible shortened service life.
• Maintainheatexchangerandburners.Theunitshould
operate for many years without excessive scale buildup
in the heat exchanger, however, the heat exchanger, the
vent system, and the burners should be inspected and
cleaned (if required) by a qualified serviceman annually
to ensure continued safe operation. Particular attention
must be given to identify deterioration from corrosion
or other sources.
• Themotorsforthecirculatingairblower,outdoorfan,
and combustion blower are pre-lubricated at the factory.
No further oiling is required for the life of this product.
• Inspectandcleanthescreenoftheventcoverassembly
at the beginning of each heating and cooling season.
CleaningofHeatExchanger
WARNING:
Holesintheheatexchangercancauseproducts
ofcombustiontoenterthehome.Replacethe
heatexchangerifleaksarefound.Failureto
prevent products of combustion from being
circulated into the living space can create
potentially hazardous conditions including
carbonmonoxidepoisoningthatcouldresult
inpersonalinjuryordeath.
If the heat exchanger must be cleaned due to soot or
scale build up, follow the steps below.
1. Shut off the gas supply to the unit at the meter or at the
manual valve in the gas supply piping.
2. Turn off all power to the unit and set the thermostat to
the lowest temperature setting.
3. Remove the louvered access panel from the unit.
4. Turn the gas control knob (gas valve) to the OFF
position. See Figure 10 (page 25) for gas valve shut off
instructions.
5. Disconnect the wires from the gas valve, ignitor, flame
sensor, combustion air motor, flame roll-out control,
over-temperature limit switch, and pressure switch.
6. Remove the silicone rubber tube from the collector pan
to the pressure switch.
7. Remove 4 nuts securing the combustion blower to the
collector pan. Remove the combustion blower.
8. Remove all screws securing the collector pan to the
unit. Remove the collector pan from the unit.
CAUTION:
To prevent damage to the unit or internal
components, it is recommended that two
wrenchesbeusedwhenlooseningortightening
nuts.Donotovertighten!
9. Using 2 wrenches, separate the ground-joint union in
the gas supply piping at the unit.
10. Remove the piping between the gas valve and the
ground-joint union, if necessary.
11. Remove the screws that secure the burner assembly
in place and the burner assembly. bE EXTREMELY
CAREFUL NOT TO DAMAGE THE IGNITOR WHILE
REMOVING THE bURNER ASSEMbLY.
12. Attach a round wire brush to a length of high grade
stainless steel cable, such as drain clean-out cable.
Attach the other end of the spring cable to a variable
speed reversible drill. Slowly insert and rotate the cable
into the top portion of the heat exchanger. Operate the
drill alternating between forward and reverse, working
the cable in and out several times to obtain sufficient
cleaning. Repeat this process at each exchanger tube.
13. Remove all loosened debris from the heat exchanger
tubes using high pressure air and vacuum cleaner.
14. Using a light, check the condition of the upper and
lower sections of the heat exchanger tube.
15. Inspect the burners and if necessary, clean them
carefully with a soft wire brush and/or the nozzle of a
vacuum cleaner. DO NOT DAMAGE THE IGNITOR OR
FLAME SENSOR WHILE CLEANING THE bURNER.
16. Replace all the parts in reverse order from which they
were removed.
17. Follow the operating instructions found on the right
side door and the User’s Information Manual to return
the unit to operation.
CleaningofBurners
If the burners must be cleaned, follow the steps below.
1. Shut off the gas supply to the unit either at the meter
or at a manual valve in the supply piping.
2. Turn off all power to the unit and set the thermostat to
the lowest temperature setting.
3. Remove the louvered control access panel from the
unit.
4. Turn the gas control knob to the OFF position. See
Figure 10 (page 25) for gas valve shut off instructions.
5. Disconnect the wires from the gas valve, ignitor, and
flame sensor.
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Maytag PPG3GD Guide d'installation

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