Nordyne 4-5 TON SERIES Manual
Pleasereadthisinformationthoroughlyandbecomefamiliarwiththecapabilities
and use of your appliance before attempting to operate or maintain this unit.
Keep this literature where you have easy access to it in the future. If a problem
occurs, check the instructions and follow recommendations given. If these
suggestions don’t eliminate your problem, call your servicing contractor.
Theinstallationinstructionsareprimarilyintendedtoassistqualifiedindividuals
experienced in the proper installation of this appliance. Some local codes
require licensed installation/service personnel for this type of equipment.
Please read all instructions carefully before starting the installation.
DO NOT DESTROY. PLEASE READ CAREFULLY AND
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
IMPORTANT
SPLIT SYSTEM AIR CONDITIONER - SINGLE & 3 PHASE, R-22
USER’S MANUAL / INSTALLATION INSTRUCTIONS
4-5TON SERIES - FOR EXPORT ONLY 10 SEER
2
IMPORTANT SAFETY INFORMATION .......................4
AIR CONDITIONER INSTALLATION ..........................5
General Information...................................................5
BeforeYou Install this Unit.........................................5
Locating the Air conditioner.......................................5
Packaging Removal...................................................5
Ground Level.............................................................5
Rooftop......................................................................5
Connecting Refrigerant Tubing Between the
Indoor & Outdoor Unit ...............................................6
ELECTRICALWIRING.................................................6
Pre-Electrical Check List...........................................6
Line Voltage...............................................................6
Grounding..................................................................7
Thermostat Connections...........................................7
Unbalanced 3-Phase Supply Voltage........................7
Optional Electric Heater Kits .....................................8
STARTUP & ADJUSTMENTS .....................................8
Pre-Start Check List..................................................8
Start-up Procedures..................................................8
Air Circulation - Indoor Blower ..................................8
Anti-Short Cycle Timer Protection.............................8
System Cooling.........................................................8
System Heating.........................................................9
Refrigerant Charging.................................................9
Charging Units in AC Mode when
Outdoor Temperature is Above 55° F........................9
AIR CONDITIONER MAINTENANCE..........................9
FIGURES &TABLES .................................................10
Figure 4. - Unit Dimensions.....................................10
Table 2.- Unit Dimensional Data.............................10
Wiring Diagrams......................................................11
Figure 4. - Single Phase Units (4 Ton) ...................11
Figure 5. - Single Phase Units (5 Ton) ...................12
Figure 6. - 3 Phase Units (4 Ton) ............................13
Figure 7. - 3 Phase Units (5 Ton) ............................14
Refrigerant Charging Tables....................................15
Table 3.- Charging Table for 4 Ton Units.................15
Table 4.- Charging Table for 5 Ton Units.................15
INSTALLATION / PERFORMANCE CHECK LIST....16
REPLACEMENT PARTS............................................16
USER INFORMATION
INSTALLER INFORMATION
IMPORTANT SAFETY INFORMATION .......................3
OPERATING INSTRUCTIONS.....................................3
Cooling Operation .....................................................3
Heating Operation.....................................................3
Operating the Air Conditioner for Automatic
Cooling and Heating..................................................3
Operating the Indoor Blower Continuously................3
Turning the Air Conditioner Off..................................3
AIR CONDITIONER MAINTENANCE..........................3
TROUBLESHOOTING .................................................3
WARRANTY INFORMATION
A warranty certificate with full details is included with the
airconditioner.Carefullyreviewtheseresponsibilitieswith
yourdealerorservicecompany.Themanufacturerwillnot
be responsible for any costs found necessary to correct
problems due to improper setup, improper installation,
adjustments, improper operating procedure on the part
of the user, etc.Some specific examples of service calls
which are not included in the limited warranty are:
• Correcting wiring problems in the electrical circuit
supplying the air conditioner.
• Resettingcircuitbreakersorotherswitches.
• Adjustingorcalibratingofthermostat.
3
IMPORTANT SAFETY INFORMATION
Safety markings are used frequently throughout this
manualtodesignateadegreeorlevelofseriousnessand
should not be ignored.WARNING indicates a potentially
hazardous situation that if not avoided, could result in
personalinjuryordeath.CAUTIONindicatesapotentially
hazardoussituationthatifnotavoided,mayresultinminor
or moderate injury or property damage.
USER INFORMATION
OPERATING INSTRUCTIONS
NOTE: Thermostat styles vary. Some models may not
include the AUTO mode and others will have the AUTO
in place of the HEAT and COOL. Others may include all
three.Please refertothethermostatmanufacturer’sUser
Manual for detailed programming instructions.
Cooling Operation
1.Set the thermostat’s system mode to COOL or AUTO
and change the fan mode to AUTO. See Figure 1.
2.Setthetemperatureselectortothedesiredtemperature
level.Theoutdoorfan,compressor,andblowermotorwill
all cycle on and off to maintain the indoor temperature
at the desired cooling level.
NOTE: If the temperature level is re-adjusted, or the
system mode is reset, the fan and compressor in the
outdoor unit may not start immediately. A protective
timercircuitholdsthecompressorandtheoutdoorfan
off for approximately 5 minutes following a previous
operation or the interruption of the main electrical
power.
Heating Operation
1.Set the thermostat’s system mode to HEAT or AUTO
and change the fan mode to AUTO. See Figure 1.
2.Setthetemperatureselectortothedesiredtemperature
level. The optional heating equipment (furnace or
electric heat) will cycle on & off to maintain the indoor
temperature at the desired heating level.
The continuous indoor blower operation can be obtained
with the thermostat system mode set in any position,
including OFF.
Turning the Air conditioner Off
Changethethermostat’ssystemmodetoOFFandthefan
modeto AUTO (SeeFigure 1).NOTE:Thesystemwillnot
operate, regardless of the temperature selector setting.
AIR CONDITIONER MAINTENANCE
Propermaintenanceismostimportanttoachievethebest
performancefromtheapplianceandshouldbeperformed
frequently at the beginning of each air conditioning season.
WARNING:
This air conditioner contains liquid and
gaseous refrigerant under pressure.
Installation and servicing should only be
attempted by qualified, trained personnel
thoroughly familiar with the equipment
and safe responsible refrigerant handling
procedures. Failure to comply with this
warning could result in equipment damage,
personal injury, or death.
• Keeptheoutdoorunitclean.Hoseoffperiodicallyand
keep unit fins clear of leaves and grass clippings.
• Keeptheoutdoorunitclearofobstructions.DONOT
obstructairowwithtallplantsorshrubs.DONOTstore
gasoline or other flammable materials on or near the
outdoor unit.
• Neveroperatetheappliancewithoutalterinstalledin
the return air duct.Inspect filters frequently and replace
when necessary with filter of same dimensional size.
TROUBLESHOOTING
• Checkthethermostatsetting.Makesurethesystem
mode and temperature settings are correct.
• Checktheelectricalpanelfortrippedcircuitbreakers.
• Checktheltersfordustaccumulation.
• Checktheoutdoorunitandmakesureitiscleanand
not covered with grass or leaves.
Operating the AC for Automatic Cooling & Heating
1.Set the thermostat system mode to AUTO and the
thermostat fan mode to AUTO. See Figure 1.
2.Set the thermostat temperature selector to the desired
temperature level. The thermostat will maintain the
desired temperature level by switching between either
the outdoor cooling unit or the indoor heating unit
(furnace or electric heat) automatically.
Operating the Indoor Blower Continuously
Thecontinuousindoorbloweroperationistypicallyusedto
circulatetheindoorairtoequalizeatemperatureunbalance
duetoasunload,cooking,orfireplaceoperation.Setthe
thermostatfanmodetoON(Figure1).Theindoorblower
starts immediately, and will run continually until the fan
mode is reset to AUTO.
Figure 1. DigitalThermostat
Fan
Mode Temperature
Selector
System
Mode
4
INSTALLER INFORMATION
IMPORTANT SAFETY INFORMATION
Pleasereadallinstructionsbeforeservicingthisequipment.
Pay attention toall safety warningsand any otherspecial
notes highlighted in the manual. Safety markings are
used frequently throughout this manual to designate a
degreeorlevelofseriousnessandshouldnotbeignored.
WARNINGindicatesapotentiallyhazardoussituationthat
if not avoided, could result in personal injury or death.
CAUTIONindicatesapotentiallyhazardoussituationthat
if not avoided, may result in minor or moderate injury or
property damage.
WARNING:
Shutoffallelectricalpowertotheunitbefore
performing any maintenance or service on
the system. Failure to comply may result
in personal injury or death.
WARNING:
Unlessnotedotherwiseintheseinstructions,
only factory authorized parts or accessory
kits may be used with this product.
Improper installation,service,adjustment,
or maintenance may cause explosion,
fire, electrical shock or other hazardous
conditions which may result in personal
injury or property damage.
WARNING:
Split system air conditioners leave the
factory with a nitrogen holding charge.
Followallcharginginstructionsformaximum
unit performance and efficiency. Some
local codes require licensed installation/
service personnel to service this type of
equipment. Refrigerant charging must be
done by qualified personnel familiar with
safe and environmentally responsible
refrigerant handling procedures.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-22 refrigerant. DO NOT
use any other refrigerant in this unit. Use
of another refrigerant will damage the unit.
WARNING:
Theinformationlistedbelowmustbefollowed
duringtheinstallation,service,andoperation
of this unit.Unqualified 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
.
• 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 for special installation
requirements.
• Allelectricalwiringmustbecompletedinaccordance
with local, state and national codes and regulations
that take precedence.
• Thisequipmentcontainsliquidandgaseousrefrigerant
underhighpressure.DONOTUSEANYPORTIONOF
THECHARGEFORPURGINGORLEAKTESTING.
Installation or servicing should only be performed by
qualifiedtrainedpersonnelthoroughlyfamiliarwiththis
type of equipment.
• Fullyannealed,refrigerantgradecoppertubingshould
beusedwheninstallingthesystem.Refrigerantsuction
line tubing should be fully insulated.
• Thisunitisdesignedforoutdoorinstallationsonlyand
should be located in a position as shown on page 5.
• Followall precautionsintheliterature,ontags,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.
• Refrigerantandelectricallineshouldberoutedthrough
suitably waterproofed openings to prevent water from
leaking into the structure.
5
AIR CONDITIONER INSTALLATION
General Information
This 4-5 ton air conditioner is designed only for outdoor
rooftop or ground level installations. The unit has been
testedandcertifiedbyAHRIforcapacityandefficiencyand
will provide many years of safe and dependable comfort,
providing it is properly installed and maintained. Abuse,
improper use, and/or improper maintenance can shorten
the life of the appliance and create unsafe hazards.
Toachieveoptimumperformanceandminimizeequipment
failure, it is recommended that periodic maintenance be
performed on this unit. The ability to properly perform
maintenance on this equipment requires certain
mechanical skills and tools.
BeforeYou Install this Unit
√Thecoolingloadoftheareatobeconditionedmustbe
calculatedandasystemofthepropercapacityselected.
It is recommended that the area to be conditioned be
completely insulated and vapor sealed.
√Checktheelectricalsupplyandverifythepowersupply
isadequateforunitoperation.Thesystemmustbewired
andprovidedwithcircuitprotectioninaccordancewith
localbuildingcodes.Ifthereisanyquestionconcerning
the power supply, contact the local power company.
√Always install a unit disconnect switch within sight of
the unit or in accordance with local codes.
√Theindoorsection(airhandler,furnace,etc)shouldbe
installed before routing the refrigerant tubing.Refer to
theindoorunit'sinstallationinstructionsforinstallation
details.
√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. Claims for damage should be filed immediately
with the carrier.
√Pleaseconsultyourdealerformaintenanceinformation
andavailabilityofmaintenancecontracts.Pleaseread
all instructions before installing the unit.
Locating the Air Conditioner
• Surveythejobsitetodeterminethebestlocationfor
mounting the outdoor unit.
• Overhead obstructions (Figure 2), poorly ventilated
areas, and areas subject to accumulation of debris
should be avoided.
• Sufcientclearanceforunobstructedairowthroughthe
outdoorcoilmustbemaintainedinordertoachieverated
performance.SeeFigure 2 forminimumclearancesto
obstructions.
• Considerationshouldbegiventoavailabilityofelectric
power, service access, noise, and shade.
• SeeFigure3&Table2(page10)forunitdimensions.
Packaging Removal
NOTE: To prevent damage to the tubing connections,
carefully remove the carton and user’s manual from the
equipment. Discard the shipping carton.
Ground Level
Ground level installations must be located according to
localbuildingcodesorordinancesandtheserequirements:
• Clearancesmustbeinaccordancewiththoseshown
in Figure 2.
• Asuitablemountingpad(Figure2)mustbeprovided
and be separate from the building foundation. The
pad must be level and strong enough to support the
unit’sweight.The slabheightmustbe aminimumof2”
(5 cm) above grade and with adequate drainage.
Rooftop
Rooftop installations must be located according to local
building codes or ordinances and these requirements:
• UnitsmaybeinstalledonClassA,B,orCroofcovering
material.
• Secureoptionalmountingpadorframetoroofusing
acceptable mechanical methods per local codes.
• Themethodofmountingshouldbedesignedsothatit
does not overload roof structures or transmit noise to
theinteriorofthestructure.Theroofmustbestructurally
capable of handling the weight of the unit.
• Fullperimetersupportisrequiredundertheunit.The
support must be built to raise the unit 6" above the
roof, must be made of weather resistant materials,
and installed prior to unit installation.
Figure 2. Clearance Requirements
2” Mounting Pad
48”
24" for
Service Access
12" or 18”
See Note
12" or 18”
See Note
DO NOT
OBSTRUCT
TOP OF UNIT
NOTE: Units require full perimeter clearances.
Installer must maintain 18” between two units
or 12” between single unit and structure.
6” from Building
or Structure
6
Connecting RefrigerantTubing Between the Indoor
& Outdoor Unit
CAUTION:
ThissystemusesR-22refrigerantwithmineral
oil.When servicing, cover or seal openings
to minimize the exposure of the refrigerant
system to air to prevent accumulation of
moisture and other contaminants.
After outdoor and indoor unit placement has been
determined, route refrigerant tubing between the
equipmentinaccordancewithsoundinstallationpractices.
• When connecting refrigerant linesets together, it is
recommendedthatdrynitrogenbeflowingthroughthe
jointsduringbrazing.Thiswillpreventinternaloxidation
and scaling from occurring.
• Refrigeranttubingshouldberoutedinamannerthat
minimizesthelengthoftubingandthenumberofbends
in the tubing.
• Refrigeranttubingshouldbesupportedinamanner
thatthetubingwillnotvibrateorabradeduringsystem
operation.
• Tubingshouldbekeptcleanofforeigndebrisduring
installation.
• Everyeffortshouldbemadebytheinstallertoensure
thatthefieldinstalledrefrigerantcontainingcomponents
of the system have been installed in accordance with
these instructions and sound installation practices to
insure reliable system operation and longevity.
• Recommendedmaximumlengthoftheinterconnecting
refrigerant line is 75 feet (4 Ton) and 90 feet (5 Ton).
Andthemaximumverticalelevationdifferencebetween
the indoor and outdoor sections should not exceed 20
feet.
• If precise forming of refrigerant lines is required, a
copper tubing bender is recommended. Avoid sharp
bends and contact of the refrigerant lines with metal
surfaces.
• Optionalequipmentsuchasliquidlinesolenoidvalves,
start assist kit, low suction pressure cutout switch kit,
highpressurecutoutswitchkit,etc.,shouldbeinstalled
instrictaccordancewiththemanufacturer’sinstallation
instructions.
ELECTRICALWIRING
WARNING:
To avoid risk of electrical shock, personal
injury, or death, disconnect all electrical
power to the unit before performing any
maintenance or service.The unit may have
more than one electrical supply.
Label all wires prior to disconnection when
servicing the unit.Wiring errors can cause
improper and dangerous operation.
• Allelectricalconnectionsmustbeincompliancewithall
applicablestate,national,orlocalcodesandordinances
that take precedence.
Pre-Electrical Check List
√Verify that the voltage, frequency, and phase of the
supply source match the specifications on the unit
rating plate.
√Verifythattheserviceprovidedbytheutilityissufficient
tohandletheadditionalloadimposedbythisequipment.
Refer to the unit wiring label for proper high and low
voltage wiring.
√Verifyfactorywiringisinaccordancewiththeunitwiring
diagram(Figures4,5, 6 &7, pages 11-14).Inspectfor
loose connections.
√Phase balance on 3 phase units must always be
checked. See Unbalanced 3-Phase Supply Voltage
section (page 7).
LineVoltage
• Awiringdiagramislocatedontheinsidecoverofthe
electrical box of the outdoor unit.The installer should
becomefamiliarwiththewiringdiagrambeforemaking
any electrical connections to the outdoor 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.
• Line voltage to the unit should be supplied from a
dedicated branch circuit containing the correct fuse
or circuit breaker for the unit. Incoming field wiring
and minimum size of electrical conductors and circuit
protectionmustbeincompliancewithinformationlisted
ontheoutdoorunitdatalabel.Anyotherwiringmethods
must be acceptable to authority having jurisdiction.
• Theoutdoorunitrequiresbothpowerandcontrolcircuit
electrical connections. Refer to the wiring diagram /
schematicforidentificationandlocationofoutdoorunit
field wiring interfaces.See Figures 4, 5, 6, & 7 (pages
11-14).Make all electrical connections in accordance
with all applicable codes and ordinances.
• Overcurrentprotectionmustbeprovidedatthebranch
circuitdistributionpanelandsizedasshownontheunit
rating label and according to applicable local codes.
7
See the unit rating plate for minimum circuit ampacity
and maximum overcurrent protection limits.
• Providepowersupplyfortheunitinaccordancewiththe
unit wiring diagram, and the unit rating plate.Connect
theline-voltageleadstotheterminalsonthecontactor
inside the control compartment.
• Useonlycopperwireforthelinevoltagepowersupply
tothisunit.Usepropercodeagencylistedconduitand
aconduit connector for connectingthe supply wires to
the unit. Use of rain tight conduit is recommended.
• 208/230Voltunitsareshippedfromthefactorywired
for 230 voltoperation.For208Voperation,removethe
lead from the transformer terminal marked 240V and
connect it to the terminal marked 208V.
• Optionalequipmentrequiringconnectiontothepower
or control circuits must be wired in strict accordance
with the applicable local codes, and the instructions
provided with the equipment.
Grounding
WARNING:
Theunitcabinet musthave anuninterrupted
or unbroken electrical ground to minimize
personal injury if an electrical fault should
occur.Donotuse gaspiping as an electrical
ground!
This unit must be electrically grounded in accordance
with all applicable state, national, or local codes that take
precedence.Usethegroundinglugprovidedinthecontrol
box for grounding the unit.
Thermostat Connections
• Thermostatconnectionsshouldbemadeinaccordance
with the instructions supplied with the thermostat and
the indoor equipment.
• Singlestage or two-stagethermostatscan be used
withthisequipmentdependingonoptionalaccessories
(i.e. economizer) installed with the unit. Select a
thermostatthatoperatesinconjunctionwiththeinstalled
accessories.
• Theoutdoorunitisdesignedtooperatefroma24VAC
Class II control circuit. The control circuit wiring must
comply with applicable local codes having jurisdiction.
• Thelowvoltagewiresmustbeproperlyconnectedto
the unit's low voltage terminal block. Recommended
wire gauges and wire lengths for typical thermostat
connections are listed in Table 1 (page 8).
• Thethermostatshouldbemountedabout5feet(1.52m)
abovetheooronaninsidewall.DONOTinstallthe
thermostat on an outside wall or any other location
whereitsoperationmaybeadverselyaffectedbyradiant
heat from fireplaces, sunlight, or lighting fixtures, and
convective heat from warm air registers or electrical
appliances. Refer to the thermostat manufacturer’s
instructionsheetfordetailedmountingandinstallation
information.
Example:
AB = 226V
BC = 230V
AC = 227V
2.Determine the average voltage in the power supply.
3.Determine the maximum deviation:
4.Determine percent of
voltage imbalance by
using the results from
steps2&3inthefollowing
equation.
maxvoltage deviation
fromaverage voltage
=100 x averagevoltage
% Voltage Imbalance
2
228
100 x= 0.88%
Example:
1.Measurethelinevoltages
of your 3 phase power
supplywhereitentersthe
building and at a location
thatwillonlybededicated
to the unit installation (at
theunitscircuitprotection
or disconnect).
Unbalanced 3-Phase SupplyVoltage
Voltageunbalanceoccurswhenthevoltagesofallphases
of a 3-phase power supply are no longer equal. This
unbalance reduces motor efficiency and performance.
Someunderlyingcausesofvoltageunbalancemayinclude:
Lackofsymmetryintransmissionlines,largesingle-phase
loads, and unbalanced or overloaded transformers. A
motorshouldneverbeoperatedwhenaphaseimbalance
in supply is greater than 2%.
Perform the following steps to determine the percentage
of voltage imbalance:
In this example, the measured line voltages were
226,230,and227.Theaveragewouldbe228volts
(226 + 230 + 227 = 683 / 3 = 228).
The amount of phase imbalance (0.88%) is satisfactory
since the amount is lower than the maximum allowable
2%. Please contact your local electric utility company if
your voltage imbalance is more than 2%.
Example:
Fromthe valuesgiveninstep1, the BCvoltage
(230V) is the greatest difference in value from
the average:230 - 228 = 2
228 - 226 = 2
228 - 227 = 1
Highest Value
8
Table 1.Thermostat Wire Gauge
Thermostat
Wire Gauge
RecommendedT-Stat Wire
Length (Unit toT-Stat)
2-Wire
(Heating) 5-Wire
(Heating/Cooling)
24 55 25
22 90 45
20 140 70
18 225 110
Optional Electric Heater Kits
Optional field-installed electric heater kits may be
availableinmultipleheatingcapabilitiesuptoamaximum
of 36kw. Split System Air Conditioners are designed to
allow optional auxiliary electric heat to be field installed
as required by the building’s particular heating load.The
options available for each unit are shown in the heater
kit installation instructions or the air handler's Technical
Service Literature.
Install the heater kits as directed by the instructions
supplied with the heater kit. Follow all cautions and
warnings as directed.
Thethermostat'sfunctionmodeshouldbesettoOFFand
the fan mode should be set to AUTO. Close all electrical
disconnects to energize the system.
Air Circulation - Indoor Blower
1.Set the thermostat system mode on OFF and the fan
modetoON.
2.Verifytheblowerrunscontinuously.Checktheairdelivery
at the supply registers and adjust register openings for
balanced air distribution. If insufficient air is detected,
examine ductwork for leaks or obstructions.
3.Set the thermostat fan mode to AUTO and verify the
blower stops running.
NOTE: On 3 phase air handler models only - If blower
isspinningoppositeofarrowdirection,shutoffthemain
power to the unit and switch any two field wires at the
disconnect. DO NOT alter unit wiring.
Anti-Short Cycle Timer Protection
1.SetthethermostatsystemmodetoCOOL.Notethe
temperaturesettingofthethermostatandgraduallyraise
the set-point temperature until the unit de-energizes.
2.Immediately lower the set-point temperature of the
thermostat to its original setting and verify that the
indoor blower is energized and outdoor unit remains
de-energized.
3.After approximately 5 minutes, verify the compressor
and fan energize and the temperature of the discharge
airiscoolerthantheroomtemperature.NOTE:3phase
airconditionersDONOThaveshortcycleprotection.
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 outdoor unit and indoor blower energize.
2.Verifyblowerwheelisspinningindirectionindicatedby
arrow.Feeltheairbeingcirculatedbytheindoorblower
and verify that it is cooler than ambient temperature.
Listenforanyunusualnoises.If unusualsounds occur,
determine the source of the noise and correct as
necessary.
3.Verify HI and LO refrigerant pressures.
NOTE: If refrigerant pressures are abnormal and the
compressorisrotatingbackwards,shutoffmainpowerto
theunitandswitchanytwofieldwiresatthedisconnect.
DO NOT alter unit wiring.
4.Allowthesystemtooperateforseveralminutesandthen
set the temperature selector above room temperature.
Verify the fan and compressor cycle off with the
thermostat.NOTE:Theblower should also stopunless
fanmodeissettotheONposition.
STARTUP & ADJUSTMENTS
Pre-Start Check List
√Verify the outdoor coil and top of the unit are free from
obstructions and debris, and all equipment access/
control panels are in place.
√Verify that the refrigerant tubing is properly connected
and leak checked.
√Verify that the unit is properly charged with the
refrigerant listed on the rating label.
√Verify that the line voltage power leads are securely
connected and the unit is properly grounded.
√Verifythatthelowvoltagewiresaresecurelyconnected
to the correct leads on the low voltage terminal strip.
√Verify that the power supply branch circuit overcurrent
protection is sized properly.
√Verify that the thermostat is wired correctly.
Start-up Procedures
WARNING:
If this unit is equipped with a crankcase
heater, allow 24 hours prior to continuing
the start-up procedures to allow for heating
of the refrigerant compressor crankcase.
Failure to comply may result in damage
and could cause premature failure of the
system. This warning should be followed
at initial start-up and any time the power
has been removed for 12 hours or longer.
9
System Heating (optional)
1.Set the thermostat's system mode to HEAT and the
temperature mode above room temperature.
2.Verify the optional heating equipment (furnace or
electric heat) and indoor blower energize. Feel the air
being circulated by the indoor blower and verify that
it is warmer than ambient temperature. Listen for any
unusualnoises.Ifunusualsoundsoccur,determinethe
source of the noise and correct as necessary.
Charging Units in AC mode when Outdoor Temperature
is above 55° F (optimized sub-cooling of 10° F - 12° F)
1.With the system operating at steady-state, measure
the liquid refrigerant pressure (in PSIG) at the outdoor
unit service valve.
2.Measure the liquid refrigerant temperature (in
Fahrenheit) at the service valve.
3.Determinetherequiredliquidrefrigerantpressurefrom
Table 3 &Table 4 (page 15).
• IfthepressuremeasuredinStep1isgreaterthan
therequiredliquidrefrigerantpressuredeterminedin
Step3,thenthereistoo muchchargeinthesystem.
Remove refrigerant and repeat Steps 1 through 3
until the system is correctly charged.
• IfthepressuremeasuredinStep1islessthanthe
required liquid refrigerant pressure determined in
Step 3, there is too little charge in the system. Add
refrigerant and repeat Steps 1 through 3 until the
system is correctly charged.
Refrigerant Charging
WARNING:
4-5Ton Split System Air Conditioners leave
the factory with a nitrogen holding charge.
Follow these charging instructions for
maximum unit performance and efficiency.
Somelocalcodesrequirelicensedinstallation/
service personnel to service this type of
equipment. Refrigerant charging must be
done by qualified personnel familiar with
safe and environmentally responsible
refrigerant handling procedures.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.
After refrigerant line connections are completed, it is
required that you leak check and evacuate the indoor
section and all line connections (using proper methods)
before finalizing the full system refrigerant charge.
• Toachieveratedcapacityandefciencythecompressor
must be exposed to refrigerant for at least 24 hours
prior to running and then the compressor must be run
for a minimum of 12 hours.
• Tables3&4(page15)areapplicableonlytomatched
assembliesofNORDYNEequipmentandlistedairows
for the indoor coil. Outdoor units with indoor coils
not listed are not recommended and deviations from
rated airflows or non-listed combinations may require
modification to the expansion device and refrigerant
charging procedures for proper and efficient system
operation.
• Therefrigerantchargecanbecheckedandadjusted
through the service ports provided external to the
outdoor unit. Use only gage linesets which have a
“Schrader” depression device present to actuate the
valve.
• 4Tonunitsshoulduse0.079oriceintheliquidline
and should be charged with 67 oz.of R-22 refrigerant
as specified in the supplied addendum (7091540).
5 Ton units should use 0.093 orifice in the liquid line
and should be charged with 82 oz.of R-22 refrigerant
as specified in the supplied addendum (7091540).
AIR CONDITIONER MAINTENANCE
WARNING:
Topreventelectrical shock,personal injury,
or death,disconnect all electrical power to
theunit beforeperforming anymaintenance
or service. The unit may have more than
one electrical supply.
Proper maintenance is important to achieve optimum
performancefromtheairconditioner.Theabilitytoproperly
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
localdealerabouttheavailabilityofmaintenancecontracts.
Routine maintenance should include the following:
• Inspectandcleanorreplaceairltersatthebeginning
ofeachheatingandcoolingseason,ormorefrequently
if required.
• Inspectthecondensatedrainandoutdoorcoilatthe
beginningofeachcoolingseason.Removeanydebris.
Cleantheoutdoorcoilandlouversasnecessaryusing
amilddetergentandwater.Rinsethoroughlywithwater.
• Inspecttheelectricalconnectionsfortightnessatthe
beginningofeachheatingandcoolingseason.Service
as necessary.
CAUTION:
The unit should never be operated without
a filter in the return air system. Replace
disposable filters with the same type and
size.
• Do not attempt to add additional oil to motors un-
equippedwithoiltubes.Thecompressorishermetically
sealed at the factory and does not require lubrication.
10
FIGURES &TABLES
Figure 3. Unit Dimensions
DW
H
DO NOT OBSTRUCT TOP OF UNIT
Allow adequate clearance for airflow
Table 2. Unit Dimensional Data
S5BA- 048KA/CA 060KB/CD
H 27 27
W 22-3/4 30-3/4
D 22-3/4 30-3/4
11
Figure 4.Wiring Diagram for Single Phase Units (4Ton)
WIRING DIAGRAMS
ASCT
T2
T1
T3
SEE NOTE 6
CRANKCASE
HEATER
(OPTIONAL)
C
S
R
COMPRESSOR
L1 L2 GRND
(1 PHASE FIELD SUPPLY)
GROUNDING
SCREW
L1 L2
T1 T2
CONTACTOR
DUAL
CAPACITOR
F
C
H
S
R
C
BLACK or
BLACK WHITE
RED or RED BLACK
ORANGE
BLUE
BLACK
OUTDOOR
FAN MOTOR
YELLOW or
YELLOW BLACK
START
CAPACITOR
START
RELAY
32
1
BLACK
YELLOW
RED
YELLOW
RED or YELLOW
BLACK
YELLOW
BLACK
BLACK
BLACK
(SEE NOTE 7)
esahPelgniS)noitceSroodtuO(renoitidnoCriAmetsyStilpS
WIRING DIAGRAM
NOTES:
1. Disconnect all power before servicing.
2. For supply connection use copper coductors only.
3. Not suitable on systems that exceed 150 volts to ground.
4. For replacement wires use conductors suitable for 105° C
5. For ampacities and overcurrent protection, see unit rating plate.
6. Connect to 24 vac/40va/class 2 curcuit. See furnace/air handler installation
instructions for control circuit and optional relay/transformer kits.
7. Anti-Short CylceTimer (ASCT) may or may not be installed in the unit. If desired,
ASCT is factory installed on select models only or may be field installed as shown
using manufacturer’s approved kit. If not present, connectYellow and Black wires per Note 6.
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
3. Ne convient pas aux installations de plus de 150 volt a la terre.
710226C
(Replaces 710226B)
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
208/230V
CC
ASCT
ASCT
(SEE NOTE 7)
H
C
F
CCH (OPTIONAL)
R
C
S
S
C
R
L2
T2
COMPRESSOR
CONTACTS
L1
T1
COMPRESSOR
OUTDOOR FAN
MOTOR
24 VOLT FIELD
CONNECTIONS CC - CONTACTOR COIL
CCH - CRANKCASE HEATER
¢710226{¤
710226C
12
Figure 5.Wiring Diagram for Single Phase Units (5Ton)
(SEE NOTE 7)
208/230V
CC
ASCT
ASCT
(SEE NOTE 7)
H
C
F
R
C
S
S
C
R
L2
T2
COMPRESSOR
CONTACTS
L1
T1
COMPRESSOR
OUTDOOR FAN
MOTOR
24 VOLT FIELD
CONNECTIONS
CC - CONTACTOR COIL
Split System Air Conditioner (Outdoor Section) Single Phase
THIS IS A BAR CODE
WIRING DIAGRAM
NOTES:
1. Disconnect all power before servicing.
2. For supply connection use copper conductors only.
3. Not suitable on systems that exceed 150 volts to ground.
4. For replacement wires use conductors suitable for 105° C.
5. For ampacities and overcurrent protection, see unit rating plate.
6. Connect to 24 vac/40va/class 2 circuit. See furnace/air handler installation
instructions for control circuit and optional relay/transformer kits.
7. Anti-Short CycleTimer (ASCT) may or may not be installed in the unit. If desired,
ASCT is factory installed on select models only or may be field installed as shown
using manufacturer’s approved kit. If not present, connectYellow and Black wires per Note 6.
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
3. Ne convient pas aux installations de plus de 150 volt a la terre.
0211
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
SEE NOTE 6
(Replaces 711108A)
711108B
ASCT
T2
T1
T3
C
S
R
COMPRESSOR
L1 L2 GRND
(1 PHASE FIELD SUPPLY)
GROUNDING
SCREW
L1 L2
T1 T2
CONTACTOR
DUAL
CAPACITOR
F
C
H
S
R
C
ORANGE
BLUE
BLACK
OUTDOOR
FAN MOTOR
RED OR RED BLACK
BLACK OR
BLACK WHITE
YELLOW OR
YELLOW BLACK
RED
BLACK
START
CAPACITOR
START
RELAY
32
1
BLACK
YELLOW
RED
YELLOW
YELLOW
BLACK
13
Figure 6.Wiring Diagram for 3 Phase Units (4Ton)
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
7108650
(Replaces 703608E)
1208
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
Split System Air Conditioner (Outdoor Section)Three Phase
NOTES:
1. Disconnect all power before servicing.
2. For supply connections use copper cundoctors only.
3. For replacement wires use conductors suitable for 105 deg. C.
4. For supply wire ampacities and overcurrent protection, see unit rating plate.
5. Connect to 24 vac/40 va/class 2 circuit. See furnace/air handler installation
instructions for control circuit and optional relay/transformer kits.
¢710865:¤
T1 T2
L1 L2
T3
L3
GND
T3
T1
T2
C
S
R
L1 L2 L3
COMPRESSOR
OUTDOOR FAN
MOTOR
CONTACTOR
GROUNDING LUG
THREE PHASE FIELD SUPPLY
CAPACITOR
RED
YELLOW
BLACK
BLUE
ORANGE
BLACK
BLACK
SEE NOTE 5
YELLOW
BLACK
BLACK
BLACK
CC
S
C
R
L1
L2
L3
Outdoor
Fan
Motor
24 VOLT FIELD
CONNECTIONS
Compressor
Contacts
Capacitor
Compressor
T3 T2
T1
BLACK
YELLOW
CCH
CC - CONTACTOR COIL
CCH - CRANKCASE HEATER
14
Figure 7.Wiring Diagram for 3 Phase Units (5Ton)
1. Disconnect all power before servicing.
2. For supply connections use copper conductors only.
3. For replacement wires use conductors suitable for 105° C.
4. For supply wire ampacities and overcurrent protection, see unit rating plate.
5. Connect to 24 vac/40 va/class 2 circuit. See furnace/air handler installation
instructions for control circuit and optional relay/transformer kits.
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
0211
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
Split System Air Conditioner (Outdoor Section)Three Phase
NOTES:
(Replaces 711109A)
711109B
T1 T2
L1 L2
T3
L3
GND
T3
T1
T2
C
S
R
L1 L2 L3
COMPRESSOR
OUTDOOR FAN
MOTOR
CONTACTOR
GROUNDING LUG
THREE PHASE FIELD SUPPLY
CAPACITOR
BLUE
ORANGE
YELLOW
BLACK
BLACK
YELLOW
RED
SEE NOTE 5
CC
L1
L2
L3
OUTDOOR
FAN
MOTOR
24 VOLT FIELD
CONNECTIONS
COMPRESSOR
CONTACTS
CAPACITOR
COMPRESSOR
T3 T2
T1
BLACK
CC - CONTACTOR COIL
C
S
R
YELLOW
15
REFRIGERANT CHARGINGTABLES FOR
COOLING MODE OF OPERATION
Suct.
Press.
OUTDOORTEMPERATURE (°F)
70 75 80 85 90 95 100 105
Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp.
58 165 159
60 167 164 182 163
62 169 169 185 168 200 168
64 171 176 187 174 202 173 218 172
66 174 178 189 179 204 178 220 177 235 176
68 192 182 207 182 222 181 238 181 253 180
70 210 185 225 186 240 185 255 185 271 184
72 228 189 243 189 257 189 273 188 288 188
74 232 193 246 193 261 193 275 192 290 192
76 250 197 264 197 279 197 292 196
78 267 201 282 201 296 201
80 285 205 300 205
82 303 209
84
Table 4. ChargingTable for 5Ton Units
Table 3. ChargingTable for 4Ton Units
Suct.
Press.
OUTDOORTEMPERATURE (°F)
70 75 80 85 90 95 100 105
Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp. Liq.
Press. Dis.
Temp.
66 177 153
68 179 158 193 157
70 181 163 196 162 210 161
72 184 168 198 167 212 166 227 165
74 187 171 200 172 214 171 229 170 243 169
76 204 175 217 175 231 174 245 174 260 173
78 221 178 234 178 247 178 262 177 276 177
80 237 182 251 182 264 182 278 181 293 181
82 241 186 254 186 267 186 280 185 295 185
84 257 190 271 190 284 189 297 188
86 274 194 287 194 301 193
88 291 198 304 198
90 307 202
92
NOTES:
1.All pressures are listed psig and all temperatures in °F
2.DischargetemperaturesGREATERthanchartedvalues
indicate an UNDERCHARGED system.
3.Discharge temperatures LESS than charted values
indicate an OVERCHARGED system.
LEGEND
Shaded boxes indicate flooded conditions and
should not be relied on to determine system
charge.
Rated design values.The suction pressure
will be lower than design value if indoor air
flow, entering dry bulb, or entering wet bulb
temperatures are lower than design.
INSTALLATION / PERFORMANCE CHECK LIST
INSTALLATION ADDRESS:
CITY ________________________ STATE ________________
UNITMODEL# ________________________________________
UNITSERIAL# ________________________________________
Unit Installed Minimum Clearances
per Figure 2 (page 5)? YES NO
INSTALLER NAME:
CITY _______________________ STATE ________________
REFRIGERATION SYSTEM
Was unit given 24 hr warm up period
for crankcase heaters (if applicable)? YES NO
Stage-1 Liquid Pressure (high side) ________________________
Stage-1 Liquid Temperature ____________________________°F
Stage-1 Suction Pressure (low side)________________________
Final Unit Charge_______________________________________
Has the owner’s information been
reviewed with the customer? YES NO
Has the Literature Package been left
with the unit? YES NO
Specifications & illustrations subject to change without notice or incurring obligations.
O’Fallon, MO | Printed in U.S.A.(01/13)
ELECTRICAL SYSTEM
Electrical connections tight? YES NO
Line voltage polarity correct? YES NO
Rated Voltage: ___________________________________ VOLTS
L1-L2 Volts: _____________________________________ VOLTS
L1-L3 Volts: _____________________________________ VOLTS
L2-L3 Volts: _____________________________________ VOLTS
Avg.Volts: ______________________________________ VOLTS
Max. deviation of voltage
from avg. volts:___________________________________VOLTS
% Volt imbalance: ________________________________ VOLTS
Blower Motor HP:________ Sheave Setting ___________#Turns
Has the thermostat been calibrated? YES NO
Is the thermostat level? YES NO
Istheheatanticipatorsettingcorrect?
(If Applicable) YES NO
REPLACEMENT PARTS
ReplacementpartsareavailablethroughallNordynedistributors.
Please have the complete model and serial number of the unit
when ordering replacement parts.
ELECTRICAL
Capacitors Temperature Limit Switches
Compressors Thermostats
Contactors Time Delay Relays
Pressure Switches Transformers
Relays
MOTORS
Blower Motor
Fan Motor
COMPONENTS
Blower Assembly Fan Grille
Cabinet Panels Filter/Driers
Expansion Valves
709227C (Replaces 709227B)
This manual suits for next models
4
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